NUVEEN TAX EXEMPT UNIT TRUST SERIES 724/NEW
487, 1994-04-13
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<PAGE>


                                                      File No. 33-52327
                                                      40 Act File No. 811-2271


                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549

                                AMENDMENT NO. 1
                                       TO
                                    FORM S-6

For Registration under the Securities Act of 1933 of Securities of Unit
Investment Trusts Registered on Form N-8B-2

A.  Exact name of Trust:     NUVEEN TAX-EXEMPT UNIT TRUST, SERIES 724

B.  Name of Depositor:       JOHN NUVEEN & CO. INCORPORATED

C.  Complete address of Depositor's principal executive offices:

                             333 West Wacker Drive
                             Chicago, Illinois  60606

D.  Name and complete address of agents for service:

                             JOHN NUVEEN & CO. INCORPORATED
                             Attn:  James J. Wesolowski
                             333 West Wacker Drive
                             Chicago, Illinois 60606

                             CHAPMAN AND CUTLER
                             Attn:  Daniel C. Bird, Jr.
                             111 West Monroe Street
                             Chicago, Illinois  60603

It is proposed that this filing will become effective (check appropriate box)

- -----
- -----    immediately upon filing pursuant to paragraph (b)

- -----
- -----    on (date) pursuant to paragraph (b)

- -----
- -----    60 days after filing pursuant to paragraph (a)

- -----
- -----    on (date) pursuant to paragraph (a) of rule 485 or 486

E.  Title and amount of securities being registered:  An indefinite number of
    Units as permitted by Rule 24f-2.

F.  Proposed maximum offering price to the public of the securities being
    registered:  Not presently determinable.

G.  Amount of filing fee:  $500 in accordance with Rule 24f-2.

H.  Approximate date of proposed sale to the public:

    As soon as practicable after the effective date of the Registration
    Statement.
______
          Check box if it is proposed that this filing will become effective
  X       on 4/13/94 at 1:30 p.m. pursuant to Rule 487.
______



<PAGE>
 
   
                                 APRIL 13, 1994
                             SUBJECT TO COMPLETION
NUVEEN  Tax-Exempt Unit Trusts
             PROSPECTUS
            Series 724
             April 13, 1994
    
INTEREST  INCOME TO THE  TRUSTS AND TO  UNITHOLDERS, IN THE  OPINION OF COUNSEL,
UNDER EXISTING LAW IS EXEMPT FROM FEDERAL INCOME TAX. CAPITAL GAINS, IF ANY, ARE
SUBJECT TO TAX. IN ADDITION, INTEREST INCOME OF STATE TRUSTS IS, IN THE  OPINION
OF  COUNSEL,  EXEMPT,  TO THE  EXTENT  INDICATED,  FROM STATE  AND  LOCAL TAXES.
INTEREST INCOME OF ANY TRUST  OTHER THAN A STATE TRUST  MAY BE SUBJECT TO  STATE
AND LOCAL TAXES.
 
CURRENTLY  OFFERED AT PUBLIC OFFERING PRICE PLUS INTEREST ACCRUED TO THE DATE OF
SETTLEMENT. MINIMUM PURCHASE--EITHER $5,000 OR 50 UNITS, WHICHEVER IS LESS.
 
   
THE NUVEEN  TAX-EXEMPT  UNIT TRUST,  SERIES  724 consists  of  seven  underlying
separate  unit investment trusts  designated as Virginia  Traditional Trust 285,
California Insured Trust 223, Florida  Insured Trust 188, Massachusetts  Insured
Trust  112, New York Insured Trust 215,  Ohio Insured Trust 113 and Pennsylvania
Insured Trust 178. Each Trust initially consists of delivery statements relating
to contracts to purchase  Bonds and, thereafter, will  consist of a  diversified
portfolio of obligations issued by or on behalf of states and territories of the
United  States and authorities and political subdivisions thereof (see SCHEDULES
OF INVESTMENTS), the interest on which is, in the opinion of bond counsel to the
issuers, exempt from  Federal income tax  under existing law.  In addition,  the
interest  on Bonds in each State Trust is, in the opinion of bond counsel to the
issuers of the obligations, exempt from  such State's income taxes, if any.  All
obligations in each Traditional Trust are rated in the category "A" or better by
Standard  & Poor's Corporation or Moody's Investors Service, Inc. on the Date of
Deposit. All  obligations in  each  Insured Trust  are  covered by  policies  of
insurance  obtained  from  the Municipal  Bond  Investors  Assurance Corporation
guaranteeing payment of principal  and interest when due.  All such policies  of
insurance  remain effective  so long  as the  obligations are  outstanding. As a
result of such insurance, the Bonds in each portfolio of the Insured Trusts have
received a rating of "Aaa" by Moody's  Investors Service, Inc. and the Bonds  in
the  Insured Trusts and the  Units of each such Trust  have received a rating of
"AAA" by Standard & Poor's Corporation.  INSURANCE RELATES ONLY TO THE BONDS  IN
THE INSURED TRUSTS AND NOT TO THE UNITS OFFERED HEREBY OR TO THEIR MARKET VALUE.
(See Section 5.)
    
 
THE  OBJECTIVES of the Trusts are  tax-exempt income and conservation of capital
through a diversified  investment in tax-exempt  Bonds. (SEE SECTIONS  2, 3  AND
11.)  The payment of interest and the  preservation of principal are, of course,
dependent upon the continuing ability of the issuers of Bonds and of any insurer
thereof to meet  their obligations thereunder.  There is no  guarantee that  the
Trusts' objectives will be achieved.
 
DISTRIBUTIONS  of interest  received by  each Trust  will be  made semi-annually
unless the Unitholder elects to receive them monthly or quarterly. (SEE  SECTION
13.)  Distribution of funds in the Principal Account, if any, will ordinarily be
made semi-annually.
 
FOR ESTIMATED LONG TERM RETURNS AND ESTIMATED CURRENT RETURNS to Unitholders  in
each  Trust on the  business day prior to  the Date of Deposit.  (SEE PAGE 3 AND
SECTION 9.)
 
THE PUBLIC OFFERING  PRICE per Unit  of each Trust  during the initial  offering
period  is equal to a pro rata share of the OFFERING prices of the Bonds in such
Trust's portfolio plus  a sales charge  of up  to 4.90% of  the Public  Offering
Price  (equivalent to 5.152%  of the net  amount invested); the  sales charge is
somewhat lower on Trusts  with lesser average maturities.  (SEE SECTION 6.)  The
Secondary  Market Public Offering Price per Unit for each Trust will be equal to
a pro rata share of the  sum of BID prices of the  Bonds in such Trust plus  the
sales  charges determined based on the number of years remaining to the maturity
of each  Bond. Accrued  interest from  the  preceding Record  Date to,  but  not
including,  the settlement date (normally five  business days after purchase) is
added to the Public Offering Price. The  sales charge is reduced on a  graduated
scale  for sales involving at least $50,000 or  500 Units and will be applied on
whichever basis is more favorable to the purchaser. (SEE SECTION 6.)
 
A UNITHOLDER MAY REDEEM UNITS at the office of the Trustee, United States  Trust
Company of New York, at prices based upon the BID prices of the Bonds. The price
received  upon  redemption  may  be  more  or  less  than  the  amount  paid  by
Unitholders, depending upon the  value of the  Bonds on the  date of tender  for
redemption.  (SEE  SECTION 19.)  The Sponsor,  although not  required to  do so,
intends to make a secondary market for  the Units of the Trusts at prices  based
upon  the BID  prices of the  Bonds in  the respective Trusts.  (SEE SECTION 7.)
RETAIN THIS PROSPECTUS FOR FUTURE REFERENCE.
 
THESE SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES  AND
EXCHANGE  COMMISSION OR ANY  STATE SECURITIES COMMISSION  NOR HAS THE SECURITIES
AND EXCHANGE  COMMISSION OR  ANY  STATE SECURITIES  COMMISSION PASSED  UPON  THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.
<PAGE>
  NUVEEN  Tax-Exempt Unit Trusts
 
<TABLE>
<CAPTION>
      Index                                             Section         Page
<C>   <S>                                              <C>        <C>
      SPECIFIC TRUST MATTERS
      Virginia Traditional Trust 285                          3         9-16
      California Insured Trust 223                            3        17-29
      Florida Insured Trust 188                               3        30-38
      Massachusetts Insured Trust 112                         3        39-49
      New York Insured Trust 215                              3        50-63
      Ohio Insured Trust 113                                  3        64-71
      Pennsylvania Insured Trust 178                          3        72-80
      GENERAL MATTERS
      Accrued Interest                                        8         A-16
      Accumulation Plan                                      14         A-23
      Bonds, How Selected                                     3            8
      Bonds, Initial Determination of Offering Price         10         A-17
      Bonds, Limited Right of Substitution                    4          A-7
      Bond Ratings                                            3         9-80
      Bonds, Removal from Trust                              21         A-32
      Call Provisions of Portfolio Bonds                   3, 4         9-80
      Capital Gains Taxability                               11         A-18
      Dealer Discount                                        17         A-28
      Description of Units of Trust                           1            6
      Distributions to Unitholders                           13         A-22
      Distribution Payment Dates                          3, 13   9-80, A-22
      Distribution of Units to the Public                    17         A-27
      Essential Information Regarding the Trusts             --            4
      Estimated Long Term Return and Estimated Current
      Return                                                  9      3, A-16
      Evaluation                                             16         A-27
      Expenses to Fund                                       12         A-21
      Insurance on Bonds in the Insured Trusts                5          A-9
      Insurance on Certain Bonds in the Traditional
      Trusts                                                  5         A-12
      Interest Income to Trust                                3         9-80
      Investments, Schedules of                               3         9-80
      Legality of Units                                      24         A-36
      Limitations on Liabilities of Sponsor and Trustee       22        A-33
      Market for Units                                        7         A-15
      Minimum Transaction                                    17         A-29
      Objectives of the Trusts                                2            7
      Optional Distribution Plan                             13         A-22
      Other Information                                      24         A-35
      Ownership and Transfer of Units                        18         A-29
      Public Offering Price of Units                          6         A-12
      Quantity Purchases                                      6         A-13
      Record Dates                                           13         A-22
      Ratings, Description of                                24         A-37
      Redemption of Units by Trustee                         19         A-29
      Reports to Unitholders                                 15         A-26
      Repurchase of Units by Sponsor                         20         A-31
      Sales Charge                                            6         A-12
      Sponsor, Information About                             23         A-33
      State Tax Status                                        3         9-80
      Successor Trustees and Sponsors                        22         A-33
      Tax Status of Unitholders                              11         A-18
      Trustee, Information About                             22         A-32
      Trust Indenture, Amendment and Termination             24         A-35
      Unit Value                                             16         A-26
</TABLE>
 
                  2
<PAGE>
                          ESTIMATED LONG TERM RETURNS
                                      AND
                    ESTIMATED CURRENT RETURNS FOR THE TRUSTS
 
Following  are the  Estimated Long Term  and Estimated Current  Returns for each
Trust on the  business day  prior to  the Date  of Deposit,  under the  monthly,
quarterly and semi-annual plans of distribution (SEE SECTION 3):
                          Estimated Long Term Returns
 
<TABLE>
<CAPTION>
                                                PLAN OF DISTRIBUTION
                                      ----------------------------------------
                    TRUST             MONTHLY      QUARTERLY      SEMI-ANNUAL
  <S>                                 <C>          <C>            <C>
  ----------------------------------------------------------------------------
  Virginia Traditional Trust
  285............................      5.76%         5.80%           5.82%
  California Insured Trust 223...      5.71%         5.74%           5.75%
  Florida Insured Trust 188......      5.69%         5.73%           5.74%
  Massachusetts Insured Trust
  112............................      5.73%         5.75%           5.77%
  New York Insured Trust 215.....      5.62%         5.65%           5.67%
  Ohio Insured Trust 113.........      5.65%         5.69%           5.71%
  Pennsylvania Insured Trust
  178............................      5.69%         5.72%           5.74%
</TABLE>
 
                           Estimated Current Returns
 
<TABLE>
<CAPTION>
                                                PLAN OF DISTRIBUTION
                                      ----------------------------------------
                    TRUST             MONTHLY      QUARTERLY      SEMI-ANNUAL
  <S>                                 <C>          <C>            <C>
  ----------------------------------------------------------------------------
  Virginia Traditional Trust
  285............................      5.68%         5.71%           5.73%
  California Insured Trust 223...      5.55%         5.58%           5.60%
  Florida Insured Trust 188......      5.59%         5.62%           5.64%
  Massachusetts Insured Trust
  112............................      5.69%         5.73%           5.74%
  New York Insured Trust 215.....      5.58%         5.61%           5.63%
  Ohio Insured Trust 113.........      5.56%         5.59%           5.61%
  Pennsylvania Insured Trust
  178............................      5.61%         5.64%           5.66%
</TABLE>
 
    The  Estimated Long Term Return for each Trust is a measure of the return to
the investor earned  over the estimated  life of the  Trust. The Estimated  Long
Term  Return represents an  average of the  yields to maturity  (or call) of the
Bonds in  the Trust's  portfolio  calculated in  accordance with  accepted  bond
practice and adjusted to reflect expenses and sales charges. Under accepted bond
practice,  tax-exempt bonds  are customarily  offered to  investors on  a "yield
price" basis, which involves computation of  yield to maturity or to an  earlier
call date (whichever produces the lower yield), and which takes into account not
only the interest payable on the bonds but also the amortization or accretion to
a  specified date of any premium over  or discount from the par (maturity) value
in the bond's  purchase price. In  calculating Estimated Long  Term Return,  the
average  yield for  the Trust's  portfolio is  derived by  weighting each Bond's
yield by the market value of the Bond and by the amount of time remaining to the
date to which the Bond is priced. Once the average portfolio yield is  computed,
this  figure is then reduced to reflect estimated expenses and the effect of the
maximum sales  charge paid  by investors.  The Estimated  Long Term  Return  and
Estimated  Current Return calculations do not take  into account the effect of a
first distribution which may be less than a regular distribution or may be  paid
at  some point after 30 days (or a  second distribution which may be less than a
normal distribution for Unitholders who choose quarterly or semi-annual plans of
distribution), and it also does not  take into account the difference in  timing
of  payments  to  Unitholders  who  choose  quarterly  or  semi-annual  plans of
distribution, each of which will reduce the return.
    Estimated Current Return  is computed  by dividing the  Net Annual  Interest
Income per Unit by the Public Offering Price. In contrast to Estimated Long Term
Return, Estimated Current Return does not reflect the amortization of premium or
accretion of discount, if any, on the Bonds in the Trust's portfolio. Net Annual
Interest Income per Unit is calculated by dividing the annual interest income to
the Trust, less estimated expenses, by the number of Units outstanding.
    Net  Annual Interest  Income per Unit,  used to  calculate Estimated Current
Return, will vary  with changes  in fees  and expenses  of the  Trustee and  the
Evaluator  and with the redemption, maturity, exchange or sale of Bonds. A Trust
may experience expenses and  portfolio changes different  from those assumed  in
the  calculation of Estimated Long  Term Return. There thus  can be no assurance
that the Estimated  Current Returns or  the Estimated Long  Term Returns  quoted
herein will be realized in the future. Both the Estimated Current Return and the
Estimated  Long Term Return quoted  herein are based on  the market value of the
underlying Bonds on the  business day prior to  the Date of Deposit;  subsequent
calculations  of these performance measures will reflect the then current market
value of the underlying Bonds and may be higher or lower. For more  information,
see Section 9. The Sponsor will provide estimated cash flow information relating
to  a Trust without  charge to each  potential investor in  a Trust who receives
this prospectus and makes  an oral or  written request to  the Sponsor for  such
information.
 
                                       3
<PAGE>
   
                 ESSENTIAL INFORMATION REGARDING THE TRUSTS ON
                                APRIL 12, 1994+
    
           Sponsor and Evaluator...... John Nuveen & Co. Incorporated
           Trustee........... United States Trust Company of New York
                  -------------------------------------------
 
The  income, expense and distribution data  set forth below have been calculated
for  Unitholders   receiving   MONTHLY   distributions.   Unitholders   choosing
distributions  quarterly or  semi-annually will receive  slightly higher returns
because of the lower Trustee's fees and expenses under such plans. (SEE  SECTION
3 FOR DATA RELATING TO THESE PLANS.)
 
<TABLE>
<CAPTION>
                            Virginia       California       Florida       Massachusetts
                          Traditional       Insured         Insured         Insured
                           Trust 285       Trust 223       Trust 188       Trust 112
<S>                       <C>             <C>             <C>             <C>
                          ------------    ------------    ------------    ------------
Principal Amount of Bonds
 in Trust................ $ 3,500,000     $ 3,500,000     $ 3,500,000     $ 3,500,000
Number of Units..........      35,000          35,000          35,000          35,000
Fractional Undivided
  Interest in Trust Per
  Unit...................    1/35,000        1/35,000        1/35,000        1/35,000
Public Offering
  Price--Less than 500
  Units
    Aggregate Offering
      Price of Bonds in
      Trust.............. $ 3,338,134     $ 3,188,646     $ 3,250,735     $ 3,360,800
    Divided by Number of
      Units.............. $     95.38     $     91.10     $     92.88     $     96.02
    Plus Sales Charge*... $      4.91     $      4.69     $      4.79     $      4.95
    Public Offering Price
      Per Unit(1)........ $    100.29     $     95.79     $     97.67     $    100.97
Redemption Price Per Unit
  (exclusive of accrued
  interest).............. $     94.90     $     90.60     $     92.38     $     95.52
Sponsor's Initial
  Repurchase Price Per
  Unit (exclusive of
  accrued interest)...... $     95.38     $     91.10     $     92.88     $     96.02
Excess of Public Offering
  Price Per Unit over
  Redemption Price Per
  Unit................... $      5.39     $      5.19     $      5.29     $      5.45
Excess of Public Offering
  Price Per Unit over
  Sponsor's Repurchase
  Price Per Unit......... $      4.91     $      4.69     $      4.79     $      4.95
Calculation of Estimated
  Net Annual Interest
  Income Per Unit
    Annual Interest
    Income(2)............ $    5.9131     $    5.5429     $    5.6786     $    5.9714
    Less Estimated Annual
    Expense.............. $     .2172     $     .2252     $     .2226     $     .2228
                          ------------    ------------    ------------    ------------
    Estimated Net Annual
      Interest
      Income(3).......... $    5.6959     $    5.3177     $    5.4560     $    5.7486
Daily Rate of Accrual Per
Unit..................... $    .01582     $    .01477     $    .01515     $    .01596
Estimated Current
  Return(4)..............       5.68%           5.55%           5.59%           5.69%
Estimated Long Term
  Return(4)..............       5.76%           5.71%           5.69%           5.73%
BECAUSE  CERTAIN OF THE BONDS IN THE TRUSTS WILL NOT BE DELIVERED TO THE TRUSTEE UNTIL
AFTER THE  SETTLEMENT DATE  FOR A  PURCHASE  OF UNITS  MADE ON  THE DATE  OF  DEPOSIT,
INTEREST  THAT ACCRUES ON  THOSE BONDS BETWEEN  THE DATE OF  DEPOSIT AND SUCH DELIVERY
DATE WILL BE TREATED AS  A RETURN OF PRINCIPAL RATHER  THAN AS TAX-EXEMPT INCOME.  THE
AMOUNT  OF ANY SUCH RETURN OF PRINCIPAL IS  NOT INCLUDED IN THE ANNUAL INTEREST INCOME
SHOWN ABOVE. FOR  THE VARIOUS TRUSTS,  THE FOLLOWING SETS  FORTH THE LATEST  SCHEDULED
BOND  DELIVERY DATE, THE AMOUNT PER UNIT THAT WILL BE TREATED AS A RETURN OF PRINCIPAL
TO UNITHOLDERS WHO PURCHASE ON THE DATE  OF DEPOSIT, AND THE ESTIMATED CURRENT  RETURN
AFTER THE FIRST YEAR, ASSUMING THE PORTFOLIO AND ESTIMATED ANNUAL EXPENSES DO NOT VARY
FROM THAT SET FORTH ABOVE (SEE SECTIONS 3 AND 12 AND THE "SCHEDULES OF INVESTMENTS"):
                                   LATEST SCHEDULED         PER UNIT         ESTIMATED CURRENT RETURN
                                    DELIVERY DATE     RETURN OF PRINCIPAL      AFTER THE FIRST YEAR
                                  ------------------  --------------------   -------------------------
  VIRGINIA TRADITIONAL TRUST....     MAY 5, 1994      $           .04                     5.72        %
<FN>
- ----------
Evaluations  for purpose of sale,  purchase or redemption of  Units are made as of  4 p.m. Eastern time  on the business day next
following receipt of an order by the Sponsor or Trustee. (See Section 6.)
 + The business day prior to the Date of Deposit.
 * National and State, 5.152%;  Long Intermediate, 4.439%; Intermediate, 4.058%;  Short Intermediate, 3.093%; Short Term,  2.564%
   (4.9%, 4.25%, 3.9%, 3.0% and 2.5% of the Public Offering Prices, respectively.)
(1)  Units are offered at the Public  Offering Price plus accrued interest from the  preceding Record Date to, but not including,
    the date of settlement (normally five business days after purchase).  The Date of Deposit of the Fund has been designated  as
    the  First Record  Date for all  plans of distribution  of the Trusts  and, accordingly, for  Units purchased on  the Date of
    Deposit, the following  amounts of accrued  interest to  the Settlement Date  will be  added to the  Public Offering  Prices:
    Virginia  Traditional  Trust--$.11, California  Insured Trust--$.10,  Florida Insured  Trust--$.11 and  Massachusetts Insured
    Trust--$.11. (See Section 8.)
(2) Assumes delivery of  all Bonds. (See Section  4.) Interest income does  not include accretion of  original issue discount  on
    "zero coupon" Bonds, Stripped Obligations or other original issue discount Bonds. (See "General Trust Information" in Section
    3.)
(3)  The amount and timing of interest distributions from each Trust under the various plans of distribution are shown in Section
    3.
(4) Estimated Long Term Return  for each Trust represents  the average of the yields  to maturity (or call)  of the Bonds in  the
    Trust's  portfolio calculated in accordance with accepted bond practices  and adjusted to reflect expenses and sales charges.
    Estimated Current Return is computed by dividing the Net Annual Interest Income per Unit by the Public Offering Price, and in
    contrast to Estimated Long Term  Return does not reflect the  amortization of premium or accretion  of discount, if any.  For
    more information see page 3 and Section 9.
</TABLE>
 
                                       4
<PAGE>
ESSENTIAL INFORMATION (CONTINUED)
 
The  income, expense and distribution data  set forth below have been calculated
for  Unitholders   receiving   MONTHLY   distributions.   Unitholders   choosing
distributions  quarterly or  semi-annually will receive  slightly higher returns
because of the lower Trustee's fees and expenses under such plans. (SEE  SECTION
3 FOR DATA RELATING TO THESE PLANS.)
 
<TABLE>
<CAPTION>
                            New York          Ohio        Pennsylvania
                            Insured         Insured         Insured
                           Trust 215       Trust 113       Trust 178
<S>                       <C>             <C>             <C>
                          ------------    ------------    ------------
Principal Amount of Bonds
 in Trust................ $ 3,500,000     $ 3,500,000     $ 3,500,000
Number of Units..........      35,000          35,000          35,000
Fractional Undivided
  Interest in Trust Per
  Unit...................    1/35,000        1/35,000        1/35,000
Public Offering
  Price--Less than 500
  Units
    Aggregate Offering
      Price of Bonds in
      Trust.............. $ 3,324,358     $ 3,280,805     $ 3,352,140
    Divided by Number of
      Units.............. $     94.98     $     93.74     $     95.78
    Plus Sales Charge*... $      4.89     $      4.83     $      4.93
    Public Offering Price
      Per Unit(1)........ $     99.87     $     98.57     $    100.71
Redemption Price Per Unit
  (exclusive of accrued
  interest).............. $     94.52     $     93.26     $     95.28
Sponsor's Initial
  Repurchase Price Per
  Unit (exclusive of
  accrued interest)...... $     94.98     $     93.74     $     95.78
Excess of Public Offering
  Price Per Unit over
  Redemption Price Per
  Unit................... $      5.35     $      5.31     $      5.43
Excess of Public Offering
  Price Per Unit over
  Sponsor's Repurchase
  Price Per Unit......... $      4.89     $      4.83     $      4.93
Calculation of Estimated
  Net Annual Interest
  Income Per Unit
    Annual Interest
    Income(2)............ $    5.7964     $    5.6964     $    5.8679
    Less Estimated Annual
    Expense.............. $     .2228     $     .2153     $     .2221
                          ------------    ------------    ------------
    Estimated Net Annual
      Interest
      Income(3).......... $    5.5736     $    5.4811     $    5.6458
Daily Rate of Accrual Per
Unit..................... $    .01548     $    .01522     $    .01568
Estimated Current
  Return(4)..............       5.58%           5.56%           5.61%
Estimated Long Term
  Return(4)..............       5.62%           5.65%           5.69%
<FN>
- ----------
Evaluations  for purpose of sale,  purchase or redemption of  Units are made as of  4 p.m. Eastern time  on the business day next
following receipt of an order by the Sponsor or Trustee. (See Section 6.)
 + The business day prior to the Date of Deposit.
 * National and State, 5.152%;  Long Intermediate, 4.439%; Intermediate, 4.058%;  Short Intermediate, 3.093%; Short Term,  2.564%
   (4.9%, 4.25%, 3.9%, 3.0% and 2.5% of the Public Offering Prices, respectively.)
(1)  Units are offered at the Public  Offering Price plus accrued interest from the  preceding Record Date to, but not including,
    the date of settlement (normally five business days after purchase).  The Date of Deposit of the Fund has been designated  as
    the  First Record  Date for all  plans of distribution  of the Trusts  and, accordingly, for  Units purchased on  the Date of
    Deposit, the following amounts of accrued interest  to the Settlement Date will be  added to the Public Offering Prices:  New
    York Insured Trust--$.11, Ohio Insured Trust--$.11 and Pennsylvania Insured Trust--$.11. (See Section 8.)
(2)  Assumes delivery of  all Bonds. (See Section  4.) Interest income does  not include accretion of  original issue discount on
    "zero coupon" Bonds, Stripped Obligations or other original issue discount Bonds. (See "General Trust Information" in Section
    3.)
(3) The amount and timing of interest distributions from each Trust under the various plans of distribution are shown in  Section
    3.
(4)  Estimated Long Term Return  for each Trust represents  the average of the yields  to maturity (or call)  of the Bonds in the
    Trust's portfolio calculated in accordance with accepted bond  practices and adjusted to reflect expenses and sales  charges.
    Estimated Current Return is computed by dividing the Net Annual Interest Income per Unit by the Public Offering Price, and in
    contrast  to Estimated Long Term  Return does not reflect the  amortization of premium or accretion  of discount, if any. For
    more information see page 3 and Section 9.
</TABLE>
 
                                       5
<PAGE>
                   ESSENTIAL INFORMATION REGARDING THE TRUSTS
                                  (CONTINUED)
<TABLE>
<S>                     <C>                     <C>                     <C>
Record Dates....................................................................See Section 13
Distribution Dates..............................................................See Section 13
Minimum Principal Distribution..................................................$0.10 Per Unit
Date Trusts Established.........................................................April 13, 1994
Settlement Date.................................................................April 20, 1994
Mandatory Termination Date......................................................See Section 24
Minimum Value of Each Trust.....................................................See Section 24
Sponsor's Annual Evaluation Fee.....................$0.17 per $1,000 principal amount of Bonds
Trustee's Annual Fees:
 
<CAPTION>
                                                 PLAN OF DISTRIBUTION
                        ----------------------------------------------------------------------
                 TRUST         MONTHLY                QUARTERLY              SEMI-ANNUAL
- ----------------------       -----------        ----------------------  ----------------------
<S>                     <C>                     <C>                     <C>
  Virginia Traditional Trust 285...........     $1.5408      $  1.2208      $   1.0308
  California Insured Trust 223.............      1.6217         1.3017          1.1117
  Florida Insured Trust 188................      1.5952         1.2752          1.0852
  Massachusetts Insured Trust 112..........      1.5969         1.2769          1.0869
  New York Insured Trust 215...............      1.5968         1.2768          1.0868
  Ohio Insured Trust 113...................      1.5226         1.2026          1.0126
  Pennsylvania Insured Trust 178...........      1.5904         1.2704          1.0804
  ------------
  * Each Trustee annual fee is per $1,000 principal amount of the underlying Bonds in  a
    Trust  for  that  portion  of  the  Trust  that  represents  a  particular  plan  of
    distribution.
</TABLE>
 
                          ---------------------------
 
THE NUVEEN TAX-EXEMPT UNIT TRUST
   
SERIES 724
    
 
   
1.  WHAT IS THE NUVEEN TAX-EXEMPT UNIT TRUST, SERIES 724?
    
   
Series 724 of the Nuveen  Tax-Exempt Unit Trust is one  of a series of  separate
but  similar  investment companies  created  by the  Sponsor,  each of  which is
designated  by  a  different  Series  number.  This  Series  consists  of  seven
underlying  separate unit investment trusts,  combined under one trust indenture
and agreement,  designated Virginia  Traditional Trust  285, California  Insured
Trust  223, Florida Insured Trust 188, Massachusetts Insured Trust 112, New York
Insured Trust 215, Ohio  Insured Trust 113 and  Pennsylvania Insured Trust  178.
The  various trusts  are collectively  referred to  herein as  the "Trusts"; the
trusts in which few or none of  the Bonds are insured are sometimes referred  to
as the "Traditional Trusts", the trusts in which all of the Bonds are insured as
described  herein are  sometimes referred  to as  the "Insured  Trusts", and the
state trusts (both  Traditional and Insured)  are sometimes referred  to as  the
"State  Trusts." This Series was created under the laws of the State of New York
pursuant  to  a  Trust  Indenture  and  Agreement  dated  April  13,  1994  (the
"Indenture")  between John Nuveen & Co.  Incorporated (the "Sponsor") and United
States Trust Company of New York (the "Trustee").
    
 
    The Sponsor has deposited with  the Trustee delivery statements relating  to
contracts  for the  purchase of municipal  debt obligations  together with funds
represented by an irrevocable letter of credit issued by a major commercial bank
in the amount, including accrued interest,  required for their purchase (or  the
obligations themselves) in the principal amount
 
                                       6
<PAGE>
   
of   $24,500,000  (the  "Bonds"),  which  initially  constitute  the  underlying
securities of  the  Trusts.  Bonds  may  include  fixed  rate  obligations  with
regularly   scheduled  interest   payments,  zero  coupon   bonds  and  stripped
obligations, which represent  evidences of ownership  interests with respect  to
either  a principal payment or a payment  of interest on a tax-exempt obligation
("Stripped  Obligations").  See  "SUMMARY  OF  PORTFOLIOS"  and  "GENERAL  TRUST
INFORMATION" for a discussion of zero coupon bonds and Stripped Obligations. The
following  principal amounts  were deposited  in each  Trust: $3,500,000  in the
Virginia  Traditional  Trust,  $3,500,000  in  the  California  Insured   Trust,
$3,500,000 in the Florida Insured Trust, $3,500,000 in the Massachusetts Insured
Trust,  $3,500,000 in the New York Insured Trust, $3,500,000 in the Ohio Insured
Trust and $3,500,000  in the Pennsylvania  Insured Trust. Some  of the  delivery
statements  may relate to contracts  for the purchase of  "when issued" or other
Bonds with delivery dates after  the date of settlement  for a purchase made  on
the  Date of Deposit.  See the "Schedules  of Investments" and  Section 4. For a
discussion of  the  Sponsor's obligations  in  the event  of  a failure  of  any
contract  for  the  purchase  of any  of  the  Bonds and  its  limited  right to
substitute other bonds to replace any failed contract, see Section 4.
    
 
    Payment of interest on the Bonds in each Insured Trust, and of principal  at
maturity,  is guaranteed under policies of  insurance obtained by the Sponsor or
by the issuers of the Bonds. (See  Section 5.) AS A GENERAL MATTER, NEITHER  THE
ISSUER  NOR THE SPONSOR HAS OBTAINED INSURANCE  WITH RESPECT TO THE BONDS IN ANY
TRADITIONAL TRUST.
 
   
    The Trustee has delivered to the  Sponsor registered Units for 35,000  Units
of the Virginia Traditional Trust, 35,000 Units of the California Insured Trust,
35,000  Units of  the Florida Insured  Trust, 35,000 Units  of the Massachusetts
Insured Trust, 35,000 Units of the New  York Insured Trust, 35,000 Units of  the
Ohio  Insured Trust  and 35,000 Units  of the Pennsylvania  Insured Trust, which
together represent ownership  of the entire  Series, and which  are offered  for
sale  by this Prospectus. Each Unit of a Trust represents a fractional undivided
interest in the principal and net income of such Trust in the ratio of 10  Units
for each $1,000 principal value of Bonds initially deposited in such Trust. Only
Units  of  the  Virginia Traditional  Trust  are  offered for  sale  to Virginia
residents by this Prospectus.
    
 
2.  WHAT ARE THE OBJECTIVES OF THE TRUSTS?
 
The objectives of the Trusts are income  exempt from Federal income tax and,  in
the  case of State Trusts, where applicable, state income and intangibles taxes,
and conservation of capital, through an  investment in obligations issued by  or
on  behalf of states  and territories of  the United States  and authorities and
political subdivisions thereof,  the interest  on which  is, in  the opinion  of
recognized  bond counsel  to the  issuing governmental  authorities, exempt from
Federal income tax under existing law. Bonds in any State Trust have been issued
primarily by  or on  behalf of  the  State for  which such  Trust is  named  and
counties,  municipalities, authorities  and political  subdivisions thereof, the
interest on which Bonds is, in the opinion of bond counsel, exempt from  Federal
and  certain state income tax and intangibles  taxes, if any, for purchasers who
qualify as residents of that  State. Insurance guaranteeing the timely  payment,
when  due, of all principal and interest on  the Bonds in each Insured Trust has
been obtained by the Sponsor or by the issuers of such Bonds from Municipal Bond
Investors  Assurance  Corporation,  and  as  a  result  of  such  insurance  the
obligations  in the Insured Trusts are rated "Aaa" by Moody's Investors Service,
Inc. and "AAA" by Standard & Poor's Corporation. (SEE SECTION 5)All  obligations
in each Traditional Trust are rated in the category "A" or better (SP-1 or MIG 2
or  better  in the  case  of short  term obligations  included  in a  Short Term
Traditional Trust)  by  Standard  &  Poor's  Corporation  or  Moody's  Investors
Service,  Inc.  (including  provisional or  conditional  ratings).  In addition,
certain Bonds  in  certain  Traditional  Trusts  may  be  covered  by  insurance
guaranteeing the timely payment,
 
                                       7
<PAGE>
when  due, of  all principal  and interest. (SEE  SECTION 3.)  The portfolios of
National and State  Trusts consist  of long-term  (approximately 15  to 40  year
maturities)   obligations;  those   of  Long  Intermediate   Trusts  consist  of
intermediate to long term (approximately 11 to 19 year maturities)  obligations;
those of Intermediate Trusts consist of intermediate term (approximately 5 to 15
year  maturities)  obligations; those  of Short  Intermediate Trusts  consist of
short to intermediate term (approximately  3 to 7 year maturities)  obligations;
and  those of Short Term Trusts consist of short term (approximately 1 to 5 year
maturities) obligations.  There is,  of course,  no guarantee  that the  Trusts'
objectives  will  be achieved.  For  a comparison  of  net after-tax  return for
various tax  brackets  see  the "Taxable  Equivalent  Estimated  Current  Return
Tables" included in this Prospectus.
 
    Each  Trust consists  of fixed-rate  municipal debt  obligations. Because of
this an investment in a Trust should be made with an understanding of the  risks
which an investment in such debt obligations may entail, including the risk that
the  value of the debt obligations and  therefore of the Units will decline with
increases in  interest  rates. In  general,  the  longer the  period  until  the
maturity  of a  Bond, the more  sensitive its  value will be  to fluctuations in
interest rates. During the past decade, there have been substantial fluctuations
in interest  rates, and,  accordingly, in  the value  of debt  obligations.  The
Sponsor cannot predict whether such fluctuations will recur.
 
3.  SUMMARY OF PORTFOLIOS
 
In  selecting  Bonds for  the respective  Trusts,  the following  factors, among
others, were considered:  (i) the Standard  & Poor's Corporation  rating of  the
Bonds  or the Moody's Investors Service, Inc. rating of the Bonds (see Section 2
for a description  of minimum rating  standards), (ii) the  prices of the  Bonds
relative   to  other  bonds  of  comparable  quality  and  maturity,  (iii)  the
diversification of Bonds as to purpose of issue and location of issuer, (iv) the
maturity dates of the Bonds, and (v) in the case of the Insured Trusts only, the
availability of Municipal Bond Investors Assurance Corporation insurance on such
Bonds.
 
    In order for Bonds in the Insured  Trusts to be eligible for Municipal  Bond
Investors Assurance Corporation insurance, they must have credit characteristics
which,  in the opinion of the insurer,  would qualify them as "investment grade"
obligations. Insurance is not  a substitute for the  basic credit of an  issuer,
but  supplements the existing credit  and provides additional security therefor.
(SEE SECTION 5.)
 
    Certain bonds may carry a "mandatory put" (also referred to as a  "mandatory
tender"  or "mandatory repurchase") feature pursuant to which the holder of such
bonds will receive payment of the full principal amount thereof on a stated date
prior to the maturity date unless  such holder affirmatively acts to retain  the
bond.  Under the Indenture,  the Trustee does  not have the  authority to act to
retain Bonds with  such features; accordingly,  it will receive  payment of  the
full  principal amount of any such Bonds on the stated put date and such date is
therefore treated as the maturity date of such Bonds in selecting Bonds for  the
respective  Trusts and for  purposes of calculating the  average maturity of the
Bonds in any Trust.
 
                                       8
<PAGE>
   
VIRGINIA TRADITIONAL TRUST 285
    
 
   
    The  Portfolio of Virginia  Traditional Trust 285  consists of 8 obligations
issued by entities located in Virginia. Eight Bonds in the Trust are payable  as
to principal and interest from the income of a specific project or authority and
are  not supported by the  issuer's power to levy  taxes. The sources of payment
for these  Bonds  are divided  as  follows: Bridge  and  Toll Road  Revenue,  1;
Electrical  System Revenue, 1; Health Care  Facility Revenue, 3; Municipal Lease
Revenue, 1;  Water and/or  Sewer  Revenue, 1;  Miscellaneous Revenue,  1.  Seven
issues  in the  Trust were  rated by Standard  & Poor's  Corporation as follows:
2--AAA, 2--AA,  1--AA-,  1--A+,  1--A-.  Seven  issues  were  rated  by  Moody's
Investors Service, Inc. as follows: 2--Aaa, 3--Aa, 1--A1, 1--A.
    
 
   
    At  the Date of Deposit,  the average maturity of  the Bonds in the Virginia
Traditional Trust is 26.3 years. The average maturity of the Bonds in a Trust is
calculated based upon the stated maturities of the Bonds in such Trust (or, with
respect to Bonds for  which funds or  securities have been  placed in escrow  to
redeem such Bonds on a stated call date, based upon such call date). The average
maturity  of the Bonds in a Trust may  increase or decrease from time to time as
Bonds mature or are called or sold.
    
 
   
    Approximately 28.6% of the  aggregate principal amount of  the Bonds in  the
Trust (accounting for approximately 27.3% of the aggregate offering price of the
Bonds)    are   original    issue   discount    bonds.   See    "GENERAL   TRUST
INFORMATION--ORIGINAL ISSUE  DISCOUNT  BONDS  AND STRIPPED  OBLIGATIONS"  for  a
discussion  of the  characteristics of  such bonds  and of  the risks associated
therewith.
    
 
    Approximately 29% of  the aggregate  principal amount  of the  Bonds in  the
Trust  are  obligations of  issuers whose  revenues  are primarily  derived from
hospitals or other health  care services. The source  of payment for certain  of
these  Bonds, accounting for 9% of the Trust (included in the above percentage),
is insured by  a commercial insurer.  Consequently, the credit  ratings of  such
Bonds  essentially  reflect  the strength  of  the insurance  or  guarantee and,
depending upon the actual structure of the bond issue, are typically rated "Aaa"
or "Aa" by Moody's or "AAA" or "AA" by Standard & Poor's.
 
    For a discussion of  the risks associated with  investments in the bonds  of
various issuers, see "General Trust Information" in this section.
 
   
    The  Sponsor entered into  contracts to acquire the  Bonds between April 11,
1994 and April 12, 1994. The following summarizes certain information about  the
Bonds as of the business day prior to the Date of Deposit:
    
 
<TABLE>
<CAPTION>
                                                                  Difference between Trustee's
                                                               Determination of Offering Price and
   Cost to    Profit (or loss)   Annual Interest   Bid Price              the Bid Price
   Sponsor       to Sponsor      Income to Trust    of Bonds       (as % of principal amount)
  ----------  -----------------  ----------------  ----------  -----------------------------------
  <S>         <C>                <C>               <C>         <C>
  $3,309,761       $28,373           $208,250      $3,321,259                 .48%
</TABLE>
 
    Neither   cost  to  Sponsor  nor  profit   (or  loss)  to  Sponsor  reflects
underwriting profits or losses received or  incurred by the Sponsor through  its
participation   in  underwriting  syndicates.  An  underwriter  or  underwriting
syndicate purchases bonds  from the issuer  on a negotiated  or competitive  bid
basis  as principal with  the motive of  marketing such bonds  to investors at a
profit. The Sponsor did not participate as  either the sole underwriter or as  a
manager  or member of a syndicate that  acted as the original underwriter of any
of the Bonds.
 
                                       9
<PAGE>
   
    Unitholders may  elect to  have interest  distributions made  on a  monthly,
quarterly or semi-annual basis. The interest on the Bonds initially deposited in
the  Virginia Traditional Trust, less estimated expenses, is estimated to accrue
at the  rate  of  $.01596  per  Unit per  day  under  the  semi-annual  plan  of
distribution,  $.01591 per Unit per day under the quarterly plan of distribution
and $.01582 per  Unit per  day under  the monthly  plan of  distribution. It  is
anticipated  that the amount of interest to be distributed per Unit in each year
under each plan  of distribution will  initially be substantially  equal to  the
Estimated Net Annual Interest Income per Unit for that plan.
    
 
    Details of interest distributions per Unit of the Virginia Traditional Trust
under  the various plans appear in the  following table based upon estimated Net
Annual Interest Income at the Date of Deposit:
 
<TABLE>
<CAPTION>
                                                                                                          Normal
                                                                                                      Distributions
Virginia Traditional Trust                               1994                          1995              per Year
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        5/1            8/1           11/1            2/1
Distribution Date.....................       5/15           8/15          11/15           2/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .2865(1)                                                  $  5.7328
                                                          --------  $.4776 every month  --------
Quarterly Distribution Plan...........  $   .2865(1)   $  1.4409(2)   $  1.4409      $  1.4409        $  5.7648
Semi-Annual Distribution Plan.........  $   .2865(1)                  $  2.8908(3)                    $  5.7838
- --------------------------------------------------------------------------------------------------------------------
<FN>
 * Record Dates for semi-annual distributions are May 1 and November 1; for quarterly distributions, they are February 1, May  1,
   August 1 and November 1. Record Dates for monthly distributions are the first day of each month.
(1)  The first distribution will be paid to all Unitholders,  regardless of the distribution plan selected. Such distribution may
    be more or less than a regular monthly distribution.
(2) Regular 3-month distribution.
(3) Regular 6-month distribution.
</TABLE>
 
   
    The accrual amounts set forth above, and  in turn the amount of interest  to
be  distributed annually per Unit, will  generally change as Bonds are redeemed,
mature or are sold or as fees and expenses increase or decrease.
    
 
TAX STATUS--VIRGINIA TRADITIONAL TRUST
 
    For a discussion  of the  Federal tax status  of income  earned on  Virginia
Traditional Trust Units, see Section 11.
 
    The   assets   of   the   Virginia  Traditional   Trust   will   consist  of
interest-bearing obligations  issued by  or  on behalf  of the  Commonwealth  of
Virginia,  its counties,  municipalities, authorities  or political subdivisions
and, provided the interest thereon is  exempt from Virginia income taxes by  the
laws  or treaties of  the United States, by  or on behalf  of the United States'
territories or possessions, including Puerto Rico, Guam, the Virgin Islands  and
the  Northern Mariana Islands, and  their political subdivisions and authorities
(the "Virginia Bonds").
 
    In the opinion of Christian, Barton, Epps, Brent & Chappell, special counsel
for the Series for Virginia tax matters, under existing law:
 
        The Virginia Traditional Trust will be  treated as a trust for  Virginia
    income tax purposes and not as an association taxable as a corporation. As a
    result,  income of  the Virginia  Traditional Trust  will be  treated as the
    income of the Unitholders.
 
        The calculation of Virginia taxable income begins with Federal  adjusted
    gross  income in the case of an  individual or Federal taxable income in the
    case of a corporation, estate or trust. Certain modifications are specified,
    but no such modification requires
 
                                       10
<PAGE>
    the addition of interest  on obligations such as  the Virginia Bonds in  the
    Virginia  Traditional  Trust. Accordingly,  amounts  representing tax-exempt
    interest for Federal income tax purposes received or accrued by the Virginia
    Traditional Trust with respect to the  Virginia Bonds, will not be taxed  to
    the Virginia Traditional Trust or to the Unitholders for Virginia income tax
    purposes.
 
        In  this  respect, to  the extent  that interest  on obligations  of the
    Commonwealth or  any political  subdivision  or instrumentality  thereof  is
    included  in federal adjusted  gross income, Virginia  law provides that the
    income shall  be  subtracted in  arriving  at Virginia  taxable  income.  In
    addition,  Virginia  income  tax  exemption  is  independently  provided for
    interest on  certain  obligations,  including  those  issued  by  industrial
    development   authorities  created  pursuant   to  the  Virginia  Industrial
    Development and  Revenue  Bond  Act, by  the  Virginia  Housing  Development
    Authority, by the Virginia Resources Authority and by the Virginia Education
    Loan Authority. Where such an independent exemption is provided, interest on
    such  obligations is exempt from Virginia  income taxation without regard to
    any exemption from  Federal income  taxes, including interest  which may  be
    subject  to Federal income tax in  the hands of a recipient  who is, or is a
    related person  to,  a substantial  user  of facilities  financed  with  the
    proceeds of obligations upon which such interest is paid.
 
        As  a general rule, to the extent that  gain (whether as a result of the
    sale of Virginia Bonds by the Virginia  Traditional Trust or as a result  of
    the sale of a Unit by the Unitholder) is subject to Federal income taxation,
    such  gain will  be included  in the  Unitholder's Virginia  taxable income.
    Under the language  of certain  enabling legislation, however,  such as  the
    Virginia Industrial Development and Revenue Bond Act, the Virginia Resources
    Authority  Act and  the Virginia  Housing Development  Authority Act, profit
    made on the sale of obligations issued by authorities created thereunder  is
    expressly  exempt from  Virginia income taxation.  Such enabling legislation
    does not appear  to require a  disallowance in the  calculation of  Virginia
    taxes  of any loss  that may be  deductible for Federal  income tax purposes
    with respect  to  such  obligations, although  the  Virginia  Department  of
    Taxation has taken a contrary view.
 
        No   income  tax  is  imposed  by   any  political  subdivision  of  the
    Commonwealth of Virginia.  The Commonwealth  of Virginia does  not impose  a
    gift  tax. The Virginia estate  tax is equal to  the maximum state death tax
    credit allowable against the Federal estate tax payable by the estate.
 
ECONOMIC FACTORS--VIRGINIA
 
    The Trust  is  susceptible  to political,  economic  or  regulatory  factors
affecting  issuers  of Virginia  Bonds. Without  intending  to be  complete, the
following briefly  summarizes some  of these  matters, as  well as  some of  the
complex  factors  affecting  the  financial  situation  in  the  Commonwealth of
Virginia (the "Commonwealth"  or "Virginia"). This  information is derived  from
sources  that  are generally  available to  investors  and is  based in  part on
information  obtained  from  various   agencies  in  Virginia.  No   independent
verification  has been  made of  the accuracy  or completeness  of the following
information.
 
    There can  be no  assurance that  current or  future statewide  or  regional
economic  difficulties, and the resulting impact  on State or local governmental
finances generally will not adversely affect the market value of Virginia  Bonds
held in the portfolio of the Trust or the ability of particular obligors to make
timely payments of debt service on (or relating to) those obligations.
 
                                       11
<PAGE>
    The  Commonwealth's  financial  condition  is  supported  by  a  broad-based
economy,  including  manufacturing,  tourism,  agriculture,  ports,  mining  and
fisheries.  Manufacturing continues to be a  major source of employment, ranking
behind only services, wholesale and retail trade, and government (federal, state
and local). The federal government  is a major employer  in Virginia due to  the
heavy  concentration of federal employees  in the metropolitan Washington, D.C.,
segment of Northern Virginia  and the military employment  in the Hampton  Roads
area, which houses the nation's largest concentration of military installations.
However,  the expected retrenchment  of the military sector  as a consequence of
the end of the Cold War remains a cloud on the economic horizon and cutbacks can
be expected to occur.
 
    Although the Commonwealth enjoyed  an economic boom  in the mid-1980's,  the
Commonwealth's economy began to slow toward the end of the decade, and went into
a  recession with the rest of the nation  after July, 1990. Growth since the end
of the recession in March, 1991, has been weak.
 
    The impact  of  national trends  on  the  Commonwealth is  clearly  seen  in
personal   income  figures.   While  year-to-year  percentage   changes  in  the
Commonwealth  personal  income  parallel  those  at  the  national  level,   the
Commonwealth  figures  were higher  during  the first  half  of the  1980's. The
differential has  narrowed since  1988  and testifies  to  the lethargy  of  the
Commonwealth's  economy.  From a  peak  of 107  percent  of national  per capita
income, the Commonwealth has  experienced a relative decline  to 104 percent  in
1992.  Compared to the South Atlantic region, the Commonwealth's real per capita
income has declined slightly from a peak  of 109 percent in 1987 to 108  percent
in 1992.
 
    After  real  personal  income  in  the  Commonwealth  had  fallen  for seven
consecutive quarters ending with  the last quarter of  1991, it rose  throughout
1992.   Personal  income  declined  in  the  first  quarter  of  1993,  although
forthcoming data revisions are  likely to show  much milder decreases.  Overall,
the data suggest a fitful recovery continues.
 
    Virginia's  nonagricultural  employment  figures  also  mirror  the national
economy. During the  period 1983-1990, the  Commonwealth substantially  outpaced
the  nation in  growth of nonagricultural  employment, with  4.1 percent average
annual growth compared to  2.8 percent nationally; however,  the trend line  for
both  has been flat since 1990. For  the period 1985-1990, the Commonwealth went
ahead of the South Atlantic region, but  was hit harder during the recession  in
1990. Since then, the region has outperformed the Commonwealth.
 
    With  respect to unemployment, Virginia's unemployment rate has consistently
been below that of the nation. For the decade of 1980 to 1990, the  differential
has  been two percentage  points, although it decreased  to below one percentage
point in  1991 and  1992. For  the last  month of  FY 1993,  the  Commonwealth's
unemployment rate was 5.3 percent, compared to the national rate of 7.1 percent.
 
    Employment  trends in  Virginia are  varied from  sector to  sector and from
region to region. For example, an overall increase of 0.8 percent in FY 1993 was
driven by modest increases in government and service sectors, whereas  wholesale
and  retail  trade  employment  was  flat.  Employment  dropped  in  six  of ten
categories, with mining experiencing the  greatest percent loss at 3.6  percent.
The  service sector  is now  the largest  employer in  Virginia and  mininig and
manufacturing are now at  lower levels than in  1980. All of the  Commonwealth's
MSAs  showed increased  employment from  FY 1992  to FY  1993, ranging  from 0.5
percent to  1.8 percent,  with most  employment increases  being experienced  in
metropolitan areas.
 
                                       12
<PAGE>
    Highest  rates of unemployment are  concentrated in southwest Virginia where
mining jobs  have  been lost  and  the lowest  unemployment  rates are  seen  in
Northern  Virginia where much federally-related  employment is concentrated. Not
suprisingly, there is  great overlap  between areas of  lowest unemployment  and
those of highest per capita income.
 
    The  Commonwealth's recovery has  been hurt by the  defense cutbacks, but so
far the  employment and  output reductions  in the  Commonwealth have  not  been
severe.  Further cuts are anticipated in 1995. Base closing actions in 1993 will
result in a statewide net loss of  7,800 defense related jobs, with the  largest
impact  being  experienced in  Northern  Virginia. The  national  recession, the
overheated construction market in Northern Virginia and the restructuring of the
banking industry have also contributed to the Commonwealth's problems. Even  the
Commonwealth's  export  sector,  whose conspicuous  growth  had  been promising,
reflected disappointing results in 1992, with  a loss of 2.6 percent in  current
dollars, although the Commonwealth's exports have expanded rapidly to most areas
of the world over the past five years, averaging 11.3 percent annually.
 
    The  evidence  of  a  slow  economic  recovery,  coupled  with  major  plant
downsizings as  well  as military  base  closures,  with more  likely  in  1995,
portends  slow growth in the near term.  Additional defense cutbacks in the next
three years may be  very difficult if  the recovery has  not gained momentum  by
then.
 
    The  Commonwealth  of  Virginia  has  historically  operated  on  a fiscally
conservative basis  and is  required  by its  Constitution  to have  a  balanced
biennial  budget. At the end of the June 30, 1993, fiscal year, the General Fund
had an ending fund balance computed on a budgetary cash basis of $331.8 million,
of  which  $942,000  was  in  required  reserves.  $271.2  million  thereof  was
designated for expenditure during the next fiscal year, leaving an undesignated,
unreserved   fund  balance  of  $59.7   million,  the  second  consecutive  such
undesignated fund balance since  1988. Computed on a  modified accrual basis  in
accordance  with  generally  accepted accounting  principles,  the  General Fund
balance at the end of  the fiscal year ended June  30, 1993, was $78.8  million,
compared  with a General Fund balance of minus  $121.8 million at the end of the
fiscal year ended  June 30, 1992.  This is the  first year since  1989 that  the
General  Fund, measured on a  modified accrual basis, has  shown a positive fund
balance.
 
    As of  June  30, 1993,  total  debt  for the  Commonwealth  aggregated  $7.5
billion.  Of  that amount,  $2  billion was  tax-supported.  Outstanding general
obligation debt backed by the full faith and credit of the Commonwealth was $817
million at June  30, 1993.  Of that  amount, $511  million was  also secured  by
revenue producing capital projects.
 
    The   Virginia  Constitution  contains  limits  on  the  amount  of  general
obligation  bonds  which   the  Commonwealth   can  issue.   These  limits   are
substantially  in excess of current levels of outstanding bonds, and at June 30,
1993 would permit  an additional total  of approximately $5.3  billion of  bonds
secured  by  revenue-producing  projects  and  approximately  $5.50  billion  of
unsecured general  obligation bonds  for capital  projects, with  not more  than
approximately  $1.46 billion of the latter to be issued in any four-year period.
Bonds which are not secured by revenue-producing projects must be approved in  a
State-wide election.
 
    The  Commonwealth of Virginia maintains ratings  of AAA by Standard & Poor's
Corporation and  Aaa by  Moody's  Investors Service  on its  general  obligation
indebtedness,  reflecting  in  part  its  sound  fiscal  management, diversified
economic base  and  low debt  ratios.  There can  be  no assurances  that  these
conditions will continue. Nor are these same conditions
 
                                       13
<PAGE>
necessarily  applicable to securities  which are not  general obligations of the
Commonwealth.  Securities  issued   by  specific  municipalities,   governmental
authorities or similar issuers may be subject to economic risks or uncertainties
peculiar to the issuers of such securities or the sources from which they are to
be paid.
 
VIRGINIA TAXABLE ESTIMATED CURRENT RETURN TABLE
 
    The  following tables show the approximate taxable estimated current returns
for individuals  that are  equivalent to  tax-exempt estimated  current  returns
under  combined Federal and  state taxes, using  published 1994 marginal Federal
tax rates and marginal state tax  rates currently available and scheduled to  be
in  effect.  The  tables  incorporate  increased  tax  rates  for  higher-income
taxpayers that were  included in  the Revenue  Reconciliation Act  of 1993.  For
cases  in which more than one state  bracket falls within a Federal bracket, the
highest state bracket is combined with  the Federal bracket. The combined  state
and  Federal tax  brackets shown  reflect the fact  that state  tax payments are
currently deductible for Federal  tax purposes. The  tables illustrate what  you
would  have to  earn on  taxable investments  to equal  the tax-exempt estimated
current return for your  income tax bracket. A  taxpayer's marginal tax rate  is
affected  by both his taxable income and  his adjusted gross income. Locate your
adjusted gross and  your taxable  income (which  is your  adjusted gross  income
reduced by any deductions and exemptions), then locate your tax bracket based on
joint  or single  tax filing.  Read across  to the  equivalent taxable estimated
current return you would need to match the tax-free income.
 
                                       14
<PAGE>
 COMBINED MARGINAL TAX RATES FOR JOINT TAXPAYERS WITH FOUR PERSONAL EXEMPTIONS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross       State and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%   6.75%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 38.0 $     0-111.8      20.0   %     6.25    6.56    6.88    7.19    7.50    7.81    8.13    8.44
    38.0- 91.9       0-111.8      32.0         7.35    7.72    8.09    8.46    8.82    9.19    9.56    9.93
                 111.8-167.7      33.0         7.46    7.84    8.21    8.58    8.96    9.33    9.70   10.07
    91.9-140.0       0-111.8      35.0         7.69    8.08    8.46    8.85    9.23    9.62   10.00   10.38
                 111.8-167.7      36.0         7.81    8.20    8.59    8.98    9.38    9.77   10.16   10.55
                 167.7-290.2      38.0         8.06    8.47    8.87    9.27    9.68   10.08   10.48   10.89
   140.0-250.0   111.8-167.7      40.5         8.40    8.82    9.24    9.66   10.08   10.50   10.92   11.34
                 167.7-290.2      43.5         8.85    9.29    9.73   10.18   10.62   11.06   11.50   11.95
                  Over 290.2      40.5   2     8.40    8.82    9.24    9.66   10.08   10.50   10.92   11.34
    Over 250.0   167.7-290.2      47.0         9.43    9.91   10.38   10.85   11.32   11.79   12.26   12.74
                  Over 290.2      44.0   3     8.93    9.38    9.82   10.27   10.71   11.16   11.61   12.05
</TABLE>
 
  COMBINED MARGINAL TAX RATES FOR SINGLE TAXPAYERS WITH ONE PERSONAL EXEMPTION
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross       State and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%   6.75%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 22.8 $     0-111.8      20.0         6.25    6.56    6.88    7.19    7.50    7.81    8.13    8.44
    22.8- 55.1       0-111.8      32.0         7.35    7.72    8.09    8.46    8.82    9.19    9.56    9.93
    55.1-115.0       0-111.8      35.0         7.69    8.08    8.46    8.85    9.23    9.62   10.00   10.38
                 111.8-234.3      36.5         7.87    8.27    8.66    9.06    9.45    9.84   10.24   10.63
   115.0-250.0   111.8-234.3      41.5         8.55    8.97    9.40    9.83   10.26   10.68   11.11   11.54
                  Over 234.3      40.5   2     8.40    8.82    9.24    9.66   10.08   10.50   10.92   11.34
    Over 250.0    Over 234.3      44.0   3     8.93    9.38    9.82   10.27   10.71   11.16   11.61   12.05
<FN>
- ------------------
      1 The table reflects the effect of the limitations  on itemized deductions and the deduction for personal exemptions.  They
were  designed to phase out certain benefits of these deductions for higher income taxpayers. These limitations, in effect, raise
the current maximum marginal Federal tax rate to approximately 44.0  percent for taxpayers filing a joint return and entitled  to
four  personal exemptions and to  approximately 41.0 percent for taxpayers  filing a single return  entitled to only one personal
exemption. These limitations are  subject to certain maximums,  which depend on  the number of exemptions  claimed and the  total
amount  of the taxpayer's itemized  deductions. For example, the limitation  on itemized deductions will  not cause a taxpayer to
lose more than 80% of his allowable itemized deductions, with certain exceptions.
      2 Federal tax rate reverts to 36.0% after the 80% cap on the limitation on itemized deductions has been met.
      3 Federal tax rate reverts to 39.6% after the 80% cap on the limitation on itemized deductions has been met.
</TABLE>
 
    A comparison of  tax-free and equivalent  taxable estimated current  returns
with  the returns on various  taxable investments is one  element to consider in
making an  investment  decision.  The Sponsor  may  from  time to  time  in  its
advertising  and sales materials  compare the then  current estimated returns on
the Trust and returns over specified periods on other similar Nuveen Trusts with
returns on taxable investments such as corporate or U.S. Government bonds,  bank
CD's  and  money  market accounts  or  money  market funds,  each  of  which has
investment characteristics  that  may  differ  from those  of  the  Trust.  U.S.
Government  bonds, for example, are  backed by the full  faith and credit of the
U.S. Government and bank CD's and money market accounts are insured by an agency
of the federal government. Money market accounts and money market funds  provide
stability  of principal, but pay interest at  rates that vary with the condition
of the short-term debt market. The  investment characteristics of the Trust  are
described more fully elsewhere in this Prospectus.
 
                                       15
<PAGE>
   
Nuveen Tax-Exempt Unit Trust
Schedule of Investments at Date of Deposit
April 13, 1994
VIRGINIA TRADITIONAL TRUST 285
(Series 724)
    
 
<TABLE>
<CAPTION>
                                                                                          Ratings(3)           Trustee's
                                                                      Optional       ---------------------   Determination
 Aggregate        Name of Issuer and Title of Issue Represented      Redemption       Standard                of Offering
  Principal        by Sponsor's Contracts to Purchase Bonds(1)      Provisions(2)     & Poor's    Moody's      Price(4)
<C>          <C> <S>                                              <C>                <C>         <C>        <C>
- ---------------------------------------------------------------------------------------------------------------------------
$   500,000     * Virginia Public School Authority, School           2004 at 102         AA         Aa      $       506,385
                   Financing , Series 1994 A, 6.20% Due 8/1/14.
                   (When issued.)
    500,000      Industrial Development Authority of the City of     2004 at 102         A+         A1              435,070
                   Alexandria, Virginia, Pollution Control
                   Revenue Refunding Bonds (Potomac Electric
                   Project), 1994 Series, 5.375% Due 2/15/24.
    500,000      Industrial Development Authority of                 2002 at 102         A-         --              513,580
                   Covington-Alleghany County, Virginia,
                   Hospital Facility Revenue Bonds (Alleghany
                   Regional Hospital), Series 1992, 6.875% Due
                   4/1/22.
    500,000      Fairfax County Economic Development Authority       2004 at 102         AA         Aa              450,725
                   (Virginia), Lease Revenue Bonds (Government
                   Center Properties), Series 1994, 5.50% Due
                   5/15/18. (Original issue discount bonds
                   delivered on or about March 15, 1994 at a
                   price of 93.654% of principal amount.)
    500,000      Fairfax County (Virginia), Water Authority,         2002 at 100        AA-         Aa              461,320
                   Water Refunding Revenue Bonds, Series 1992,
                   5.75% Due 4/1/29. (Original issue discount
                   bonds delivered on or about December 8, 1992
                   at a price of 92.25% of principal amount.)
    300,000      Industrial Development Authority of the City of     2002 at 102        AAA         Aaa             284,766
                   Harrisonburg, Virginia, Hospital Revenue
                   Bonds (Rockingham Memorial Hospital), Series
                   1993, 5.75% Due 12/1/13. (MBIA Insured.)
    200,000      Industrial Development Authority of the County      2003 at 102         --          A              182,588
                   of Prince William (Virginia), Hospital
                   Revenue Refunding Bonds (Prince William
                   Hospital), Series 1993, 5.625% Due 4/1/12.
    500,000      Richmond Metropolitan Authority (Virginia),         2002 at 102        AAA         Aaa             503,700
                   Expressway Revenue and Refunding Bonds,
                   Series 1992-B, 6.25% Due 7/15/22. (FGIC
                   Insured.)
- -----------                                                                                                 ---------------
$ 3,500,000                                                                                                 $     3,338,134
- -----------                                                                                                 ---------------
- -----------                                                                                                 ---------------
</TABLE>
 
See Notes to Schedules of Investments, page 81.
 
   
* These  Bonds,  or a  portion thereof,  have delivery  dates beyond  the normal
  settlement date.  Their  expected delivery  date  is May  5,  1994.  Contracts
  relating  to  Bonds  with delivery  dates  after  the date  of  settlement for
  purchase made  on the  Date of  Deposit constitute  approximately 14%  of  the
  aggregate principal amount of the Trust. (See Section 4.)
    
 
                                       16
<PAGE>
   
CALIFORNIA INSURED TRUST 223
    
 
   
    The  Portfolio of  California Insured  Trust 223  consists of  7 obligations
issued by entities located in California.  Seven Bonds in the Trust are  payable
as  to principal and interest from the income of a specific project or authority
and are  not supported  by the  issuer's power  to levy  taxes. The  sources  of
payment  for these Bonds  are divided as follows:  Electrical System Revenue, 1;
Health Care Facility Revenue, 3; Municipal Lease Revenue, 2; Water and/or  Sewer
Revenue, 1. All of the Bonds in the Trust, as insured, are rated AAA by Standard
& Poor's Corporation and Aaa by Moody's Investors Service, Inc.
    
 
   
    At  the Date of Deposit, the average maturity of the Bonds in the California
Insured Trust is 28.0  years. The average  maturity of the Bonds  in a Trust  is
calculated based upon the stated maturities of the Bonds in such Trust (or, with
respect  to Bonds for  which funds or  securities have been  placed in escrow to
redeem such Bonds on a stated call date, based upon such call date). The average
maturity of the Bonds in a Trust may  increase or decrease from time to time  as
Bonds mature or are called or sold.
    
 
   
    Approximately  14.3% of the  aggregate principal amount of  the Bonds in the
Trust (accounting for approximately 13.3% of the aggregate offering price of the
Bonds)   are    original   issue    discount   bonds.    See   "GENERAL    TRUST
INFORMATION--ORIGINAL  ISSUE  DISCOUNT  BONDS AND  STRIPPED  OBLIGATIONS"  for a
discussion of the  characteristics of  such bonds  and of  the risks  associated
therewith.
    
 
    Approximately  29% of  the aggregate  principal amount  of the  Bonds in the
Trust consists of municipal lease obligations.
 
    Approximately 43% of  the aggregate  principal amount  of the  Bonds in  the
Trust  consists of obligations  of issuers whose  revenues are primarily derived
from services provided by hospitals or other health care facilities.
 
    For a discussion of  the risks associated with  investments in the bonds  of
various issuers, see "General Trust Information" in this section.
 
   
    The  Sponsor entered into  contracts to acquire the  Bonds between April 11,
1994 and April 12, 1994. The following summarizes certain information about  the
Bonds as of the business day prior to the Date of Deposit:
    
 
<TABLE>
<CAPTION>
                                                                  Difference between Trustee's
                                                               Determination of Offering Price and
   Cost to    Profit (or loss)   Annual Interest   Bid Price              the Bid Price
   Sponsor       to Sponsor      Income to Trust    of Bonds       (as % of principal amount)
  ----------  -----------------  ----------------  ----------  -----------------------------------
  <S>         <C>                <C>               <C>         <C>
  $3,167,216       $21,430           $194,000      $3,171,146                 .50%
</TABLE>
 
    Neither   cost  to  Sponsor  nor  profit   (or  loss)  to  Sponsor  reflects
underwriting profits or losses received or  incurred by the Sponsor through  its
participation   in  underwriting  syndicates.  An  underwriter  or  underwriting
syndicate purchases bonds  from the issuer  on a negotiated  or competitive  bid
basis  as principal with  the motive of  marketing such bonds  to investors at a
profit. The Sponsor did not participate as  either the sole underwriter or as  a
manager  or member of a syndicate that  acted as the original underwriter of any
of the Bonds.
 
   
    Unitholders may  elect to  have interest  distributions made  on a  monthly,
quarterly or semi-annual basis. The interest on the Bonds initially deposited in
the California Insured Trust, less estimated expenses, is estimated to accrue at
the rate of $.01491 per Unit per day under the semi-annual plan of distribution,
$.01486 per Unit per day under the
    
 
                                       17
<PAGE>
   
quarterly  plan of distribution and  $.01477 per Unit per  day under the monthly
plan of  distribution. It  is anticipated  that  the amount  of interest  to  be
distributed per Unit in each year under each plan of distribution will initially
be  substantially equal to the Estimated Net Annual Interest Income per Unit for
that plan.
    
 
    Details of interest distributions per  Unit of the California Insured  Trust
under  the various plans appear in the  following table based upon estimated Net
Annual Interest Income at the Date of Deposit:
 
<TABLE>
<CAPTION>
                                                                                                          Normal
                                                                                                      Distributions
California Insured Trust                                 1994                          1995              per Year
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        5/1            8/1           11/1            2/1
Distribution Date.....................       5/15           8/15          11/15           2/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .2658(1)                                                  $  5.3177
                                                          --------  $.4431 every month  --------
Quarterly Distribution Plan...........  $   .2658(1)   $  1.3374(2)   $  1.3374      $  1.3374        $  5.3497
Semi-Annual Distribution Plan.........  $   .2658(1)                  $  2.6838(3)                    $  5.3687
- --------------------------------------------------------------------------------------------------------------------
<FN>
 * Record Dates for semi-annual distributions are May 1 and November 1; for quarterly distributions, they are February 1, May  1,
   August 1 and November 1. Record Dates for monthly distributions are the first day of each month.
(1)  The first distribution will be paid to all Unitholders,  regardless of the distribution plan selected. Such distribution may
    be more or less than a regular monthly distribution.
(2) Regular 3-month distribution.
(3) Regular 6-month distribution.
</TABLE>
 
   
    The accrual amounts set forth above, and  in turn the amount of interest  to
be  distributed annually per Unit, will  generally change as Bonds are redeemed,
mature or are sold or as fees and expenses increase or decrease.
    
 
TAX STATUS--CALIFORNIA INSURED TRUST
 
    For a discussion of  the Federal tax status  of income earned on  California
Insured Trust Units, see Section 11.
 
    In the opinion of Orrick, Herrington & Sutcliffe, special California counsel
to  the Series, under existing California income and property tax law applicable
to individuals who are California residents:
 
        The California  Insured  Trust  is  not  an  association  taxable  as  a
    corporation  and the income of the  California Insured Trust will be treated
    as the income of the Unitholders under the income tax laws of California.
 
        Interest on the underlying securities (which may include bonds or  other
    obligations  issued by the  governments of Puerto  Rico, the Virgin Islands,
    Guam or  the  Northern Mariana  Islands)  which  is exempt  from  tax  under
    California  personal income tax  and property tax laws  when received by the
    California Insured  Trust  will,  under  such laws,  retain  its  status  as
    tax-exempt  interest when  distributed to Unitholders.  However, interest on
    the underlying securities attributed to a Unitholder which is a  corporation
    subject  to the California franchise tax laws may be includable in its gross
    income for purposes of determining its California franchise tax.
 
        Under California  income  tax law,  each  Unitholder in  the  California
    Insured  Trust will have  a taxable event when  the California Insured Trust
    disposes of a security (whether by sale, exchange, redemption or payment  at
    maturity)  or when  the Unitholder  redeems or  sells Units.  Because of the
    requirement that tax cost basis be
 
                                       18
<PAGE>
    reduced to reflect amortization of bond premium, under some circumstances  a
    Unitholder  may realize taxable gain when Units  are sold or redeemed for an
    amount equal to, or less  than, their original cost.  The total tax cost  of
    each Unit to a Unitholder is allocated among each of the bond issues held in
    the  California  Insured Trust  (in accordance  with  the proportion  of the
    California Insured Trust comprised by each bond issue) in order to determine
    his per  unit tax  cost for  each bond  issue; and  the tax  cost  reduction
    requirements  relating to amortization of bond premium will apply separately
    to the per unit cost of each bond issue. Unitholders' bases in their  Units,
    and the bases for their fractional interest in each California Insured Trust
    asset,  may have to be adjusted for their pro rata share of accrued interest
    received, if any, on securities delivered after the Unitholders'  respective
    settlement dates.
 
        Under  the California personal  property tax laws,  bonds (including the
    bonds  in  the  California  Insured  Trust  as  well  as  "regular-way"  and
    "when-issued"  contracts for the purchase of  bonds) or any interest therein
    is exempt from such tax.
 
        Any proceeds paid under  the insurance policy issued  to the Trustee  of
    the  fund with respect to the bonds  in the California Insured Trust as well
    as "regular-way" and "when-issued" contracts for the purchase of bonds which
    represent maturing interest  on defaulted  obligations held  by the  Trustee
    will  be exempt  from California  personal income  tax if,  and to  the same
    extent as, such interest would have been so exempt if paid by the issuer  of
    the defaulted obligations.
 
        Under  Section 17280(b)(2) of the  California Revenue and Taxation Code,
    interest on indebtedness incurred or continued to purchase or carry Units of
    the California  Insured Trust  is not  deductible for  the purposes  of  the
    California  personal  income tax.  While  there presently  is  no California
    authority interpreting  this  provision,  Section  17280(b)(2)  directs  the
    California  Franchise  Tax Board  to  prescribe regulations  determining the
    proper allocation and apportionment of interest costs for this purpose.  The
    Franchise  Tax Board has not yet proposed or prescribed such regulations. In
    interpreting the generally similar  Federal provision, the Internal  Revenue
    Service  has taken the position that  such indebtedness need not be directly
    traceable to the purchase or carrying of Units (although the Service has not
    contended that a deduction for interest on indebtedness incurred to purchase
    or improve  a  personal residence  or  to  purchase goods  or  services  for
    personal  consumption  will be  disallowed). In  the absence  of conflicting
    regulations or  other California  authority,  the California  Franchise  Tax
    Board  generally  has  interpreted California  statutory  tax  provisions in
    accord with  Internal Revenue  Service  interpretations of  similar  Federal
    provisions.
 
ECONOMIC FACTORS--CALIFORNIA
 
    As  described  above, except  to the  extent the  Fund invests  in temporary
investments, the Fund will invest substantially all of its assets in  California
Municipal  Obligations. The Fund is therefore susceptible to political, economic
or regulatory  factors affecting  issuers of  California Municipal  Obligations.
These  include the possible adverse effects of certain California constitutional
amendments, legislative measures, voter initiatives  and other matters that  are
described  below. The following information provides only a brief summary of the
complex factors affecting  the financial situation  in California (the  "State")
and  is derived from sources  that are generally available  to investors and are
believed to  be accurate.  No  independent verification  has  been made  of  the
accuracy  or completeness of  any of the  following information. It  is based in
part on information obtained from various State and
 
                                       19
<PAGE>
local agencies in  California or  contained in Official  Statements for  various
California Municipal Obligations.
 
    There  can  be  no  assurance that  future  statewide  or  regional economic
difficulties, and the resulting impact  on State or local governmental  finances
generally,  will not adversely  affect the market  value of California Municipal
Obligations held  in the  portfolio of  the Fund  or the  ability of  particular
obligors  to make  timely payments  of debt  service on  (or relating  to) those
obligations.
 
ECONOMIC OVERVIEW
 
   
    California's economy  is the  largest among  the 50  states and  one of  the
largest  in the  world. The State's  population of almost  32 million represents
12.3% of the total United States population and grew by 27% in the 1980s.  Total
personal income in the State, at an estimated $662 billion in 1992, accounts for
13% of all personal income in the nation. Total employment is almost 14 million,
the majority of which is in the service, trade and manufacturing sectors.
    
 
   
    Reports issued by the State Department of Finance and other sources indicate
that  the State's economy is suffering its worst recession since the 1930s, with
prospects for recovery  slower than for  the nation  as a whole.  The State  has
experienced  the worst job losses in any postwar recession and employment levels
are not expected to stabilize until late 1994 or 1995. Pre-recession job  levels
may not be reached until near the end of the decade. The largest job losses have
been  in Southern California, led by  declines in the aerospace and construction
industries. Weakness statewide occurred in manufacturing, construction, services
and trade and will be  hurt in the next few  years by continued cuts in  federal
defense spending and base closures. Unemployment averaged over 9% in 1993 and is
expected  to remain high in  1994. The State's economy  is only expected to pull
out of  the recession  slowly, following  the the  national recovery  which  has
begun. Delay in recovery will exacerbate shortfalls in State revenues.
    
 
CONSTITUTIONAL LIMITATIONS ON TAXES AND APPROPRIATIONS
 
    LIMITATION  ON  TAXES.  Certain  California  municipal  obligations  may  be
obligations of issuers which rely in  whole or in part, directly or  indirectly,
on  AD  VALOREM property  taxes as  a source  of revenue.  The taxing  powers of
California local governments and districts are  limited by Article XIIIA of  the
California  Constitution, enacted  by the voters  in 1978 and  commonly known as
"Proposition 13." Briefly,  Article XIIIA limits  to 1% of  full cash value  the
rate  of AD VALOREM property taxes on  real property and generally restricts the
reassessment of property to 2% per year, except upon new construction or  change
of  ownership (subject to a number of exemptions). Taxing entities may, however,
raise AD VALOREM taxes above the 1% limit to pay debt service on  voter-approved
bonded indebtedness.
 
    Under Article XIIIA, the basic 1% AD VALOREM tax levy is applied against the
assessed value of property as of the owner's date of acquisition (or as of March
1,  1975, if acquired earlier), subject  to certain adjustments. This system has
resulted in  widely varying  amounts of  tax on  similarly situated  properties.
Several  lawsuits have  been filed challenging  the acquisition-based assessment
system of Proposition 13 and on June 18, 1992 the U.S. Supreme Court announced a
decision upholding Proposition 13.
 
    Article XIIIA prohibits local governments  from raising revenues through  AD
VALOREM  property  taxes above  the 1%  limit;  it also  requires voters  of any
governmental unit to give two-thirds approval  to levy any "special tax."  Court
decisions,  however, allowed  non-voter approved  levy of  "general taxes" which
were not dedicated to a specific use. In response to
 
                                       20
<PAGE>
these decisions, the voters of the  State in 1986 adopted an initiative  statute
which  imposed significant new limits on the  ability of local entities to raise
or levy  general  taxes, except  by  receiving majority  local  voter  approval.
Significant  elements of this initiative, "Proposition 62," have been overturned
in recent court  cases. An  initiative proposed  to re-enact  the provisions  of
Proposition  62  as a  constitutional amendment  was defeated  by the  voters in
November 1990, but such a proposal may be renewed in the future.
 
    APPROPRIATIONS LIMITS. California and its  local governments are subject  to
an  annual "appropriations  limit" imposed  by Article  XIIIB of  the California
Constitution, enacted  by  the  voters  in 1979  and  significantly  amended  by
Propositions  98 and 111 in 1988 and 1990, respectively. Article XIIIB prohibits
the State or any covered local government from spending "appropriations  subject
to  limitation" in excess  of the appropriations  limit imposed. "Appropriations
subject to limitation" are  authorizations to spend  "proceeds of taxes,"  which
consists  of  tax  revenues and  certain  other funds,  including  proceeds from
regulatory licenses,  user  charges or  other  fees,  to the  extent  that  such
proceeds  exceed the cost of providing the  product or service, but "proceeds of
taxes" excludes most State subventions to local governments. No limit is imposed
on appropriations of funds which are not "proceeds of taxes," such as reasonable
user charges or fees, and certain other non-tax funds, including bond proceeds.
 
    Among the  expenditures not  included in  the Article  XIIIB  appropriations
limit  are (1)  the debt  service cost  of bonds  issued or  authorized prior to
January 1, 1979, or  subsequently authorized by  the voters, (2)  appropriations
arising  from certain emergencies  declared by the  Governor, (3) appropriations
for certain  capital  outlay  projects,  (4)  appropriations  by  the  State  of
post-1989  increases  in  gasoline  taxes  and  vehicle  weight  fees,  and  (5)
appropriations made in certain cases of emergency.
 
    The appropriations  limit for  each  year is  adjusted annually  to  reflect
changes  in  cost  of  living  and  population,  and  any  transfers  of service
responsibilities between government units. The definitions for such  adjustments
were liberalized in 1990 to follow more closely growth in California's economy.
 
    "Excess" revenues are measured over a two-year cycle. Local governments must
return  any excess to taxpayers by rate  reduction. The State must refund 50% of
any excess, with the other 50% paid to schools and community colleges. With more
liberal annual adjustment factors since 1988, and depressed revenues since  1990
because  of the  recession, few governments  are currently  operating near their
spending limits, but this condition may change over time. Local governments  may
by voter approval exceed their spending limits for up to four years.
 
    Because  of the complex nature of Articles XIIIA and XIIIB of the California
Constitution, the ambiguities and possible  inconsistencies in their terms,  and
the  impossibility of predicting future  appropriations or changes in population
and cost of living,  and the probability of  continuing legal challenges, it  is
not currently possible to determine fully the impact of Article XIIIA or Article
XIIIB  on California  Municipal Obligations or  on the ability  of California or
local governments to pay debt service on such California Municipal  Obligations.
It  is not presently possible  to predict the outcome  of any pending litigation
with respect  to  the ultimate  scope,  impact or  constitutionality  of  either
Article  XIIIA or Article XIIIB,  or the impact of  any such determinations upon
State agencies or local governments, or  upon their ability to pay debt  service
on  their obligations. Future initiatives or  legislative changes in laws or the
California Constitution  may also  affect  the ability  of  the State  or  local
issuers to repay their obligations.
 
                                       21
<PAGE>
   
    OBLIGATIONS  OF THE STATE OF CALIFORNIA. As of April 1, 1994, California had
approximately $18.1 billion  of general obligation  bonds outstanding, and  $5.6
billion  remained authorized  but unissued. In  addition, at June  30, 1993, the
State had lease-purchase obligations, payable from the State's General Fund,  of
approximately $4.0 billion. Four general obligation bond propositions, totalling
$5.9  billion, will  be on the  June 1994  ballot. In fiscal  year 1992-93, debt
service on general  obligation bonds and  lease-purchase debt was  approximately
4.1%  of General Fund revenues. The State has paid the principal of and interest
on its general obligation bonds, lease-purchase debt and short-term  obligations
when due.
    
 
    RECENT  FINANCIAL RESULTS. The principal sources of General Fund revenues in
1992-93 were the  California personal income  tax (44% of  total revenues),  the
sales  tax (38%), bank and corporation taxes (12%), and the gross premium tax on
insurance (3%). California maintains a  Special Fund for Economic  Uncertainties
(the  "Economic Uncertainties Fund"),  derived from General  Fund revenues, as a
reserve to meet cash needs of the General Fund.
 
   
    GENERAL. Throughout  the 1980's,  State spending  increased rapidly  as  the
State population and economy also grew rapidly, including increased spending for
many  assistance  programs  to  local  governments,  which  were  constrained by
Proposition 13 and other laws. The largest State program is assistance to  local
public  school districts.  In 1988, an  initiative (Proposition  98) was enacted
which (subject to  suspension by a  two-thirds vote of  the Legislature and  the
Governor)  guarantees local school  districts and community  college districts a
minimum share of State General Fund revenues (currently about 34%).
    
   
    Since the  start  of  1990-91  Fiscal Year,  the  State  has  faced  adverse
economic,  fiscal,  and  budget  conditions.  The  economic  recession seriously
affected State tax revenues.  It also caused  increased expenditures for  health
and  welfare programs. The  State is also  facing a structural  imbalance in its
budget with  the largest  programs  supported by  the General  Fund  (education,
health,  welfare and corrections) growing at  rates higher than the growth rates
for the principal revenue sources  of the General Fund.  As a result, the  State
entered  a period of budget imbalance,  with expenditures exceeding revenues for
four of the five fiscal years ending in 1991-92.
    
   
    As the State fell  into a deep  recession in the summer  of 1990, the  State
budget  fell sharply  out of  balance in the  1990-91 and  1991-92 fiscal years,
despite  significant  expenditure  cuts  and   tax  increases.  The  State   had
accumulated  a $2.8 billion budget  deficit by June 30,  1992. This deficit also
severely reduced the State's cash resources, so that it had to rely on  external
borrowing in the short-term markets to meet its cash needs.
    
   
    1992-93  FISCAL YEAR.  With  the failure to enact a  budget by July 1, 1992,
the State had no legal authority to pay many of its vendors until the budget was
passed;  nevertheless,  certain  obligations  (such  as  debt  service,   school
apportionments, welfare payments, and employee salaries) were payable because of
continuing  or  special  appropriations,  or court  orders.  However,  the State
Controller did not have enough cash to pay as they came due all of these ongoing
obligations, as well as valid obligations incurred in the prior fiscal year.
    
 
    Because of the delay in enacting the  budget, the State could not carry  out
its normal cash flow borrowing and, starting on July 1, 1992, the Controller was
required  to issue  "registered warrants" in  lieu of normal  warrants backed by
cash  to  pay  many   State  obligations.  Available  cash   was  used  to   pay
constitutionally mandated and priority obligations. Between July 1 and September
3,  1992, the  Controller issued an  aggregate of approximately  $3.8 billion of
registered warrants, all  of which were  called for redemption  by September  4,
 
                                       22
<PAGE>
1992  following enactment of the 1992-93 Budget Act and issuance by the State of
$3.3 billion of Interim Notes.
 
   
    The 1992-93 Budget Act, when finally adopted, was projected to eliminate the
State's accumulated deficit, with additional expenditure cuts and a $1.3 billion
transfer of State education funding costs to local governments by shifting local
property taxes to school districts.  However, as the recession continued  longer
and  deeper than expected,  revenues once again were  far below projections, and
only reached a level just equal to  the amount of expenditures. Thus, the  State
continued to carry its $2.8 billion budget deficit at June 30, 1993.
    
   
    The  1993-94  Budget Act  was  similar to  the  prior year,  in  reliance on
expenditure cuts  and an  additional $2.6  billion transfer  of costs  to  local
government,  particularly counties. A major feature of the budget was a two-year
plan to eliminate the accumulated deficit  by borrowing into the 1994-95  fiscal
year.  With the  recession still  continuing longer  than expected,  the 1994-95
Governor's Budget now projects that in the 1993-94 Fiscal Year, the General Fund
will have $900 million  less revenue and $800  million higher expenditures  than
budgeted.  As  a result  revenues will  only exceed  expenditures by  about $400
million. If this projection is  met, it will be  the first operating surplus  in
four  years; however,  some budget  analysts outside  the Department  of Finance
project revenues in the balance of 1993-94 will not even meet the revised, lower
projection. In addition,  the General  Fund may  have some  unplanned costs  for
relief related to the January 17, 1994 Northridge earthquake.
    
   
    The  State has implemented  its short-term borrowing as  part of the deficit
elimination plan,  and has  also borrowed  additional sums  to cover  cash  flow
shortfalls  in the spring  of 1994, for a  total of $3.2  billion, coming due in
July and  December,  1994. Repayment  of  these short-term  notes  will  require
additional  borrowing, as  the State's cash  position continues  to be adversely
affected.
    
   
    The Governor's 1994-95 Budget proposal recognizes  the need to bridge a  gap
of around $5 billion by June 30, 1995. Over $3.1 billion of this amount is being
requested  from the federal government as  increased aid, particularly for costs
associated with  incarcerating,  educating  and  providing  health  and  welfare
services to undocumented immigrants. However, President Clinton has not included
these  costs in his proposed  Fiscal 1995 Budget. The rest  of the budget gap is
proposed to be closed  with expenditure cuts and  projected $600 million of  new
revenue assuming the State wins a tax case presently pending in the U.S. Supreme
Court.  Thus the State  will once again face  significant uncertainties and very
difficult choices in the 1994-95 budget, as tax increases are unlikely and  many
cuts and budget adjustments have been made in the past three years.
    
   
    The  State's  severe financial  difficulties  for the  current  and upcoming
budget  years  will  result  in   continued  pressure  upon  almost  all   local
governments,  particularly school districts  and counties which  depend on State
aid. Despite efforts in recent years  to increase taxes and reduce  governmental
expenditures, there can be no assurance that the State will not face budget gaps
in the future.
    
 
    BOND  RATING.   State  general obligation bonds are  currently rated "Aa" by
Moody's and "A+" by S&P.  Both of these ratings  were reduced from "AAA"  levels
which  the  State held  until late  1991. There  can be  no assurance  that such
ratings will  be  maintained  in  the  future.  It  should  be  noted  that  the
creditworthiness  of  obligations  issued  by local  California  issuers  may be
unrelated to  the  creditworthiness  of  obligations  issued  by  the  State  of
California,  and that there  is no obligation on  the part of  the State to make
payment on such local obligations in the event of default.
 
                                       23
<PAGE>
    LEGAL PROCEEDINGS.   The  State  is involved  in certain  legal  proceedings
(described  in the State's recent financial statements) that, if decided against
the State, may require the State to make significant future expenditures or  may
substantially  impair revenues. The U.S. Supreme Court has granted review of two
cases  challenging  California's  "unitary"   method  of  taxing   multinational
corporations.  Although this taxing method has  since been changed, if the State
loses these cases, it could be liable for tax refunds and lost receipts of taxes
assessed totalling $3.5 billion to $4 billion.
 
OBLIGATIONS OF OTHER ISSUERS
 
    OTHER ISSUERS OF  CALIFORNIA MUNICIPAL  OBLIGATIONS. There are  a number  of
state  agencies, instrumentalities and political  subdivisions of the State that
issue Municipal Obligations, some  of which may  be conduit revenue  obligations
payable  from payments  from private  borrowers. These  entities are  subject to
various economic  risks  and  uncertainties,  and  the  credit  quality  of  the
securities  issued by them may vary considerably  from the credit quality of the
obligations backed by the full faith and credit of the State.
 
   
    STATE ASSISTANCE.  Property  tax  revenues  received  by  local  governments
declined  more than 50%  following passage of  Proposition 13. Subsequently, the
California Legislature enacted measures to provide for the redistribution of the
State's General  Fund surplus  to local  agencies, the  reallocation of  certain
State  revenues to  local agencies  and the  assumption of  certain governmental
functions by the  State to  assist municipal  issuers to  raise revenues.  Total
local  assistance (including public schools)  accounted for approximately 75% of
General Fund expenditures,  including the effect  of implementing reductions  in
certain aid programs. To reduce State General Fund support for school districts,
the  1992-93 and 1993-94  Budget Acts caused local  governments to transfer $3.9
billion of property tax revenues to  school districts, representing loss of  all
of  the post-Proposition 13 "bailout" aid.  The largest share of these transfers
came  from  counties,  and  the  balance  from  cities,  special  districts  and
redevelopment  agencies. In  order to  make up  this shortfall,  the Legislature
proposed and voters approved  dedicating 0.5% of the  sales tax to counties  and
cities for public safety purposes. In addition, the Legislature has changed laws
to relieve local governments of certain mandates, allowing them to reduce costs.
    
 
    To  the  extent  the  State  should  be  constrained  by  its  Article XIIIB
appropriations limit, or its obligation to  conform to Proposition 98, or  other
fiscal  considerations,  the absolute  level, or  the rate  of growth,  of State
assistance to local governments may be reduced. Any such reductions in State aid
could compound the serious fiscal constraints already experienced by many  local
governments, particularly counties. The Richmond Unified School District (Contra
Costa  County) entered  bankruptcy proceedings in  May 1991  but the proceedings
have been dismissed.
 
    ASSESSMENT BONDS.  California  Municipal Obligations  which  are  assessment
bonds  may be adversely affected by a general decline in real estate values or a
slowdown in real estate sales activity. In many cases, such bonds are secured by
land which  is  undeveloped  at the  time  of  issuance but  anticipated  to  be
developed  within a few years after issuance.  In the event of such reduction or
slowdown, such development may not occur  or may be delayed, thereby  increasing
the  risk of a  default on the  bonds. Because the  special assessments or taxes
securing these  bonds  are not  the  personal liability  of  the owners  of  the
property  assessed, the lien on the property is the only security for the bonds.
Moreover, in  most cases  the issuer  of these  bonds is  not required  to  make
payments  on the bonds in the event of delinquency in the payment of assessments
or taxes, except from  amounts, if any,  in a reserve  fund established for  the
bonds.
 
                                       24
<PAGE>
    CALIFORNIA  LONG-TERM LEASE OBLIGATIONS.  Certain California long-term lease
obligations, though typically payable from the general fund of the municipality,
are subject to "abatement" in the event the facility being leased is unavailable
for beneficial use  and occupancy  by the municipality  during the  term of  the
lease. Abatement is not a default, and there may be no remedies available to the
holders  of  the  certificates  evidencing the  lease  obligation  in  the event
abatement occurs. The  most common cases  of abatement are  failure to  complete
construction  of the facility  before the end  of the period  during which lease
payments have been  capitalized and  uninsured casualty losses  to the  facility
(E.G., due to earthquake). In the event abatement occurs with respect to a lease
obligation,  lease  payments  may  be interrupted  (if  all  available insurance
proceeds and reserves are exhausted) and  the certificates may not be paid  when
due.
 
   
    Several  years  ago the  Richmond Unified  School District  (the "District")
entered into a  lease transaction in  which certain existing  properties of  the
District  were sold and leased back in  order to obtain funds to cover operating
deficits. Following a fiscal crisis in which the District's finances were  taken
over  by  a State  receiver  (including a  brief  period under  bankruptcy court
protection), the  District  failed  to  make  rental  payments  on  this  lease,
resulting  in  a lawsuit  by the  Trustee for  the Certificate  of Participation
holders, in  which the  State was  a named  defendant (on  the grounds  that  it
controlled  the District's  finances). One of  the defenses raised  in answer to
this lawsuit was  the invalidity of  the District's lease.  The trial court  has
upheld  the validity of the lease and the case has been settled. Any judgment in
a future case against the position asserted by the Trustee in the Richmond  case
may  have adverse  implications for  lease transactions  of a  similar nature by
other California entities.
    
 
    OTHER CONSIDERATIONS.  The repayment  of industrial  development  securities
secured by real property may be affected by California laws limiting foreclosure
rights  of creditors. Securities backed by health care and hospital revenues may
be affected by  changes in  State regulations governing  cost reimbursements  to
health  care providers under Medi-Cal  (the State's Medicaid program), including
risks  related  to  the  policy  of  awarding  exclusive  contracts  to  certain
hospitals.
 
    Limitations  on  AD  VALOREM  property taxes  may  particularly  affect "tax
allocation" bonds issued  by California redevelopment  agencies. Such bonds  are
secured  solely by the increase in assessed valuation of a redevelopment project
area after  the start  of redevelopment  activity. In  the event  that  assessed
values  in the redevelopment  project decline (E.G., because  of a major natural
disaster such as an earthquake), the  tax increment revenue may be  insufficient
to  make principal and  interest payments on  these bonds. Both  Moody's and S&P
suspended ratings  on California  tax allocation  bonds after  the enactment  of
Articles XIIIA and XIIIB, and only resumed such ratings on a selective basis.
 
    Proposition  87, approved  by California voters  in 1988,  requires that all
revenues produced by a tax rate increase go directly to the taxing entity  which
increased  such tax rate to repay that entity's general obligation indebtedness.
As a result, redevelopment  agencies (which, typically, are  the issuers of  tax
allocation securities) no longer receive an increase in tax increment when taxes
on  property in  the project area  are increased to  repay voter-approved bonded
indebtedness.
 
    The effect of these  various constitutional and  statutory changes upon  the
ability of California municipal securities issuers to pay interest and principal
on  their obligations remains unclear. Furthermore, other measures affecting the
taxing or spending authority of California or its political subdivisions may  be
approved  or enacted in  the future. Legislation  has been or  may be introduced
which would modify existing taxes or other revenue-raising
 
                                       25
<PAGE>
measures or which either would  further limit or, alternatively, would  increase
the  abilities of state  and local governments  to impose new  taxes or increase
existing taxes. It is not presently possible to predict the extent to which  any
such  legislation will be enacted. Nor is it presently possible to determine the
impact of any such legislation on California Municipal Obligations in which  the
Fund  may invest, future  allocations of state revenues  to local governments or
the abilities of state or local governments to pay the interest on, or repay the
principal of, such California Municipal Obligations.
 
    Substantially all of California is within an active geologic region  subject
to major seismic activity. Any California Municipal Obligation in the California
Insured  Trust  could be  affected  by an  interruption  of revenues  because of
damaged facilities, or, consequently, income tax deductions for casualty  losses
or  property tax assessment reductions.  Compensatory financial assistance could
be constrained by  the inability of  (i) an issuer  to have obtained  earthquake
insurance  coverage  at reasonable  rates;  (ii) an  insurer  to perform  on its
contracts of insurance in the event  of widespread losses; or (iii) the  Federal
or  State  government to  appropriate sufficient  funds within  their respective
budget limitations.
 
   
    On January 17, 1994, a major  earthquake with an estimated magnitude of  6.8
on  the Richter scale struck the  Los Angeles area, causing significant property
damage to public and private facilities, presently estimated at $15-20  billion.
While  over $9.5 billion of  federal aid, and a  projected $1.9 billion of State
aid, plus insurance proceeds,  will reimburse much of  that loss, there will  be
some  ultimate loss of wealth and income in  the region, in addition to costs of
the  disruption  caused  by  the  event.  Short-term  economic  projections  are
generally  neutral, as the infusion  of aid will restore  billions of dollars to
the local economy within a few  months; already the local construction  industry
has  picked up. Although the earthquake  will hinder recovery from the recession
in Southern California, already hard-hit,  its long-term impact is not  expected
to  be material in the context of the  overall wealth of the region. Almost five
years after the event, there are few  remaining effects of the 1989 Loma  Prieta
earthquake  in northern  California (which,  however, caused  less severe damage
than Northridge).
    
 
                                       26
<PAGE>
CALIFORNIA TAXABLE ESTIMATED CURRENT RETURN TABLE
 
    The following tables show the approximate taxable estimated current  returns
for  individuals  that are  equivalent to  tax-exempt estimated  current returns
under combined Federal and  state taxes, using  published 1994 marginal  Federal
tax  rates and marginal state tax rates  currently available and scheduled to be
in  effect.  The  tables  incorporate  increased  tax  rates  for  higher-income
taxpayers  that were  included in  the Revenue  Reconciliation Act  of 1993. For
cases in which more than one state  bracket falls within a Federal bracket,  the
highest  state bracket is combined with  the Federal bracket. The combined state
and Federal tax  brackets shown  reflect the fact  that state  tax payments  are
currently  deductible for Federal  tax purposes. The  tables illustrate what you
would have to  earn on  taxable investments  to equal  the tax-exempt  estimated
current  return for your income  tax bracket. A taxpayer's  marginal tax rate is
affected by both his taxable income  and his adjusted gross income. Locate  your
adjusted  gross and  your taxable  income (which  is your  adjusted gross income
reduced by any deductions and exemptions), then locate your tax bracket based on
joint or single  tax filing.  Read across  to the  equivalent taxable  estimated
current return you would need to match the tax-free income.
 
 COMBINED MARGINAL TAX RATES FOR JOINT TAXPAYERS WITH FOUR PERSONAL EXEMPTIONS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross      State* and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 38.0 $     0-111.8      20.0   %     5.94    6.25    6.56    6.88    7.19    7.50    7.81    8.13
    38.0- 91.9       0-111.8      34.5         7.25    7.63    8.02    8.40    8.78    9.16    9.54    9.92
                 111.8-167.7      35.5         7.36    7.75    8.14    8.53    8.91    9.30    9.69   10.08
    91.9-140.0       0-111.8      37.5         7.60    8.00    8.40    8.80    9.20    9.60   10.00   10.40
                 111.8-167.7      38.5         7.72    8.13    8.54    8.94    9.35    9.76   10.16   10.57
                 167.7-212.4      40.5         7.98    8.40    8.82    9.24    9.66   10.08   10.50   10.92
   140.0-212.4   111.8-167.7      43.0         8.33    8.77    9.21    9.65   10.09   10.53   10.96   11.40
                 167.7-212.4      45.5         8.72    9.17    9.63   10.09   10.55   11.01   11.47   11.93
                 212.4-237.4      46.5         8.88    9.35    9.81   10.28   10.75   11.21   11.68   12.15
                 237.4-290.2      46.0         8.80    9.26    9.72   10.19   10.65   11.11   11.57   12.04
                  Over 290.2      43.5   2     8.41    8.85    9.29    9.73   10.18   10.62   11.06   11.50
   212.4-250.0   167.7-212.4      46.0         8.80    9.26    9.72   10.19   10.65   11.11   11.57   12.04
                 212.4-237.4      47.0         8.96    9.43    9.91   10.38   10.85   11.32   11.79   12.26
                 237.4-290.2      46.5         8.88    9.35    9.81   10.28   10.75   11.21   11.68   12.15
                  Over 290.2      44.0   2     8.48    8.93    9.38    9.82   10.27   10.71   11.16   11.61
   250.0-424.8   237.4-290.2      50.0         9.50   10.00   10.50   11.00   11.50   12.00   12.50   13.00
                  Over 290.2      47.0   3     8.96    9.43    9.91   10.38   10.85   11.32   11.79   12.26
    Over 424.8    Over 290.2      47.5   3     9.05    9.52   10.00   10.48   10.95   11.43   11.90   12.38
</TABLE>
 
                                       27
<PAGE>
  COMBINED MARGINAL TAX RATES FOR SINGLE TAXPAYERS WITH ONE PERSONAL EXEMPTION
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross      State* and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 22.8 $     0-106.2      20.0   %     5.94    6.25    6.56    6.88    7.19    7.50    7.81    8.13
    22.8- 55.1       0-106.2      34.5         7.25    7.63    8.02    8.40    8.78    9.16    9.54    9.92
    55.1-106.2       0-106.2      37.5         7.60    8.00    8.40    8.80    9.20    9.60   10.00   10.40
                 106.2-111.8      38.0         7.66    8.06    8.47    8.87    9.27    9.68   10.08   10.48
                 111.8-131.2      39.5         7.85    8.26    8.68    9.09    9.50    9.92   10.33   10.74
                 131.2-234.3      39.0         7.79    8.20    8.61    9.02    9.43    9.84   10.25   10.66
   106.2-115.0       0-106.2      38.0         7.66    8.06    8.47    8.87    9.27    9.68   10.08   10.48
                 106.2-111.8      38.5         7.72    8.13    8.54    8.94    9.35    9.76   10.16   10.57
                 111.8-131.2      40.0         7.92    8.33    8.75    9.17    9.58   10.00   10.42   10.83
                 131.2-234.3      39.5         7.85    8.26    8.68    9.09    9.50    9.92   10.33   10.74
   115.0-212.4   111.8-131.2      44.5         8.56    9.01    9.46    9.91   10.36   10.81   11.26   11.71
                 131.2-234.3      44.5         8.56    9.01    9.46    9.91   10.36   10.81   11.26   11.71
                  Over 234.3      44.0   2     8.48    8.93    9.38    9.82   10.27   10.71   11.16   11.61
   212.4-250.0   131.2-234.3      45.0         8.64    9.09    9.55   10.00   10.45   10.91   11.36   11.82
                  Over 234.3      44.5   2     8.56    9.01    9.46    9.91   10.36   10.81   11.26   11.71
    Over 250.0    Over 234.3      47.5   3     9.05    9.52   10.00   10.48   10.95   11.43   11.90   12.38
</TABLE>
 
- ------------------
 
     *  The State  tax rates  assumed take  into account  the adjustment  of tax
brackets based on changes in the Consumer Price Index for 1993.
 
<TABLE>
<S>         <C>
<FN>
- ------------------
      1 The table reflects the effect of the limitations  on itemized deductions and the deduction for personal exemptions.  They
were  designed to phase out certain benefits of these deductions for higher income taxpayers. These limitations, in effect, raise
the current maximum marginal Federal tax rate to approximately 44.0  percent for taxpayers filing a joint return and entitled  to
four  personal exemptions and to  approximately 41.0 percent for taxpayers  filing a single return  entitled to only one personal
exemption. These limitations are  subject to certain maximums,  which depend on  the number of exemptions  claimed and the  total
amount  of the taxpayer's itemized  deductions. For example, the limitation  on itemized deductions will  not cause a taxpayer to
lose more than 80% of his allowable itemized deductions,  with certain exceptions. The table also reflects California income  tax
laws  that increase state income tax rates for high income taxpayers,  limit itemized deductions and phase out the benefit of the
personal exemption credit and the dependent exemption credit in a manner similar to Federal tax law.
      2 Federal tax rate reverts to 36.0% and the state tax rate reverts to the applicable stated maximum rate after the 80%  cap
on the limitation on itemized deductions, under federal or state law, as appropriate has been met.
      3 Federal tax rate reverts to 39.6% after the 80% cap on the limitation on itemized deductions has been met.
</TABLE>
 
    A  comparison of tax-free  and equivalent taxable  estimated current returns
with the returns on  various taxable investments is  one element to consider  in
making  an  investment  decision. The  Sponsor  may  from time  to  time  in its
advertising and sales materials  compare the then  current estimated returns  on
the Trust and returns over specified periods on other similar Nuveen Trusts with
returns  on taxable investments such as corporate or U.S. Government bonds, bank
CD's and  money  market  accounts or  money  market  funds, each  of  which  has
investment  characteristics  that  may  differ from  those  of  the  Trust. U.S.
Government bonds, for example, are  backed by the full  faith and credit of  the
U.S. Government and bank CD's and money market accounts are insured by an agency
of  the federal government. Money market accounts and money market funds provide
stability of principal, but pay interest  at rates that vary with the  condition
of  the short-term debt market. The  investment characteristics of the Trust are
described more fully elsewhere in this Prospectus.
 
                                       28
<PAGE>
   
Nuveen Tax-Exempt Unit Trust
Schedule of Investments at Date of Deposit
April 13, 1994
CALIFORNIA INSURED TRUST 223
(Series 724)
    
 
<TABLE>
<CAPTION>
                                                                                          Ratings(3)           Trustee's
                                                                      Optional       ---------------------   Determination
 Aggregate        Name of Issuer and Title of Issue Represented      Redemption       Standard                of Offering
  Principal        by Sponsor's Contracts to Purchase Bonds(1)      Provisions(2)     & Poor's    Moody's      Price(4)
<C>          <C> <S>                                              <C>                <C>         <C>        <C>
- ---------------------------------------------------------------------------------------------------------------------------
$   500,000      California Health Facilities Financing              2003 at 102        AAA         Aaa     $       452,680
                   Authority, Kaiser Permanente, Revenue Bonds,
                   1993 Series C, 5.60% Due 5/1/33.
    500,000      State Public Works Board of the State of            2002 at 102        AAA         Aaa             445,810
                   California Lease Revenue Bonds (Department of
                   Corrections), 1993 Series D (California State
                   Prison-Lassen County, Susanville), 5.375% Due
                   6/1/18.
    500,000      California Statewide Communities Development        2003 at 102        AAA         Aaa             459,710
                   Authority, Insured Health Facilities Revenue
                   Certificates of Participation (UniHealth
                   America), 1993 Series A, 5.50% Due 10/1/14.
    500,000      The City of Los Angeles (California),               2003 at 102        AAA         Aaa             463,280
                   Wastewater System Revenue Bonds, Series
                   1993-B, 5.70% Due 6/1/23.
    500,000      Department of Water and Power of the City of        2003 at 102        AAA         Aaa
                   Los Angeles, California, Electric Plant
                   Refunding Revenue Bonds, Issue of 1993,
                 250M-5.875% Due 9/1/30,                                                                            236,578
                 250M-5.875% Due 9/1/30.                                                                            236,578
    500,000      County of Sacramento, California (Sacramento        2003 at 102        AAA         Aaa             470,850
                   County Public Facilities Financing
                   Corporation), Refunding Certificates of
                   Participation (Sacramento Main Detention
                   Facility Project), 5.75% Due 6/1/15.
    500,000      City of Walnut Creek, California, Certificates      2004 at 102        AAA         Aaa             423,160
                   of Participation, Refunding Series 1994 (John
                   Muir Medical Center), 5.00% Due 2/15/20.
                   (Original issue discount bonds delivered on
                   or about February 17, 1994 at a price of
                   94.047% of principal amount.)
- -----------                                                                                                 ---------------
$ 3,500,000                                                                                                 $     3,188,646
- -----------                                                                                                 ---------------
- -----------                                                                                                 ---------------
</TABLE>
 
See Notes to Schedules of Investments, page 81.
 
                                       29
<PAGE>
   
FLORIDA INSURED TRUST 188
    
   
    The  Portfolio of Florida Insured Trust 188 consists of 7 obligations issued
by entities located  in Florida.  Seven Bonds  in the  Trust are  payable as  to
principal  and interest from the  income of a specific  project or authority and
are not supported by the  issuer's power to levy  taxes. The sources of  payment
for  these Bonds  are divided as  follows: Electrical System  Revenue, 1; Health
Care Facility Revenue,  3; Combination  Utility Revenue, 1;  Water and/or  Sewer
Revenue, 2. All of the Bonds in the Trust, as insured, are rated AAA by Standard
& Poor's Corporation and Aaa by Moody's Investors Service, Inc.
    
 
   
    At  the Date of  Deposit, the average  maturity of the  Bonds in the Florida
Insured Trust is 27.1  years. The average  maturity of the Bonds  in a Trust  is
calculated based upon the stated maturities of the Bonds in such Trust (or, with
respect  to Bonds for  which funds or  securities have been  placed in escrow to
redeem such Bonds on a stated call date, based upon such call date). The average
maturity of the Bonds in a Trust may  increase or decrease from time to time  as
Bonds mature or are called or sold.
    
 
   
    Approximately  14.3% of the  aggregate principal amount of  the Bonds in the
Trust (accounting for approximately 13.2% of the aggregate offering price of the
Bonds)   are    original   issue    discount   bonds.    See   "GENERAL    TRUST
INFORMATION--ORIGINAL  ISSUE  DISCOUNT  BONDS AND  STRIPPED  OBLIGATIONS"  for a
discussion of the  characteristics of  such bonds  and of  the risks  associated
therewith.
    
 
    Approximately  29% of  the aggregate  principal amount  of the  Bonds in the
Trust consists of obligations  of issuers whose  revenues are primarily  derived
from the sale of water and/or sewerage services.
 
    Approximately  43% of  the aggregate  principal amount  of the  Bonds in the
Trust consists of obligations  of issuers whose  revenues are primarily  derived
from services provided by hospitals or other health care facilities.
 
    For  a discussion of the  risks associated with investments  in the bonds of
various issuers, see "General Trust Information" in this section.
 
   
    The Sponsor entered into  contracts to acquire the  Bonds between April  11,
1994  and April 12, 1994. The following summarizes certain information about the
Bonds as of the business day prior to the Date of Deposit:
    
 
<TABLE>
<CAPTION>
                                                                  Difference between Trustee's
                                                               Determination of Offering Price and
   Cost to    Profit (or loss)   Annual Interest   Bid Price              the Bid Price
   Sponsor       to Sponsor      Income to Trust    of Bonds       (as % of principal amount)
  ----------  -----------------  ----------------  ----------  -----------------------------------
  <S>         <C>                <C>               <C>         <C>
  $3,233,680       $17,055           $198,750      $3,233,235                 .50%
</TABLE>
 
    Neither  cost  to  Sponsor  nor   profit  (or  loss)  to  Sponsor   reflects
underwriting  profits or losses received or  incurred by the Sponsor through its
participation  in  underwriting  syndicates.  An  underwriter  or   underwriting
syndicate  purchases bonds  from the issuer  on a negotiated  or competitive bid
basis as principal with  the motive of  marketing such bonds  to investors at  a
profit.  The Sponsor did not participate as  either the sole underwriter or as a
manager or member of a syndicate that  acted as the original underwriter of  any
of the Bonds.
 
   
    Unitholders  may elect  to have  interest distributions  made on  a monthly,
quarterly or semi-annual basis. The interest on the Bonds initially deposited in
the Florida Insured Trust,  less estimated expenses, is  estimated to accrue  at
the rate of $.01529 per Unit per day under the semi-annual plan of distribution,
$.01524  per Unit per day  under the quarterly plan  of distribution and $.01515
per Unit per day under the monthly plan of distribution. It is anticipated  that
the  amount of interest to be distributed per  Unit in each year under each plan
of distribution  will initially  be  substantially equal  to the  Estimated  Net
Annual Interest Income per Unit for that plan.
    
 
                                       30
<PAGE>
    Details  of interest  distributions per  Unit of  the Florida  Insured Trust
under the various plans appear in  the following table based upon estimated  Net
Annual Interest Income at the Date of Deposit:
 
<TABLE>
<CAPTION>
                                                                                                          Normal
                                                                                                      Distributions
Florida Insured Trust                                    1994                          1995              per Year
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        5/1            8/1           11/1            2/1
Distribution Date.....................       5/15           8/15          11/15           2/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .2727(1)                                                  $  5.4560
                                                          --------  $.4545 every month  --------
Quarterly Distribution Plan...........  $   .2727(1)   $  1.3716(2)   $  1.3716      $  1.3716        $  5.4880
Semi-Annual Distribution Plan.........  $   .2727(1)                  $  2.7522(3)                    $  5.5070
- --------------------------------------------------------------------------------------------------------------------
<FN>
 *  Record Dates for semi-annual distributions are May 1 and November 1; for quarterly distributions, they are February 1, May 1,
   August 1 and November 1. Record Dates for monthly distributions are the first day of each month.
(1) The first distribution will be paid to all  Unitholders, regardless of the distribution plan selected. Such distribution  may
    be more or less than a regular monthly distribution.
(2) Regular 3-month distribution.
(3) Regular 6-month distribution.
</TABLE>
 
   
    The  accrual amounts set forth above, and  in turn the amount of interest to
be distributed annually per Unit, will  generally change as Bonds are  redeemed,
mature or are sold or as fees and expenses increase or decrease.
    
 
TAX STATUS--FLORIDA INSURED TRUST
 
    For  a discussion  of the  Federal tax  status of  income earned  on Florida
Insured Trust Units, see Section 11.
 
    The assets of the Florida Insured Trust (the "Trust") will consist solely of
interest-bearing obligations issued by or on behalf of the State of Florida, its
political subdivisions and authorities  or by the  Commonwealth of Puerto  Rico,
Guam,  the Virgin Islands, American Samoa,  or the Northern Mariana Islands (the
"Florida Bonds").
 
    In the opinion  of Carlton, Fields,  Ward, Emmanuel, Smith  & Cutler,  P.A.,
special counsel for the Trust for Florida tax matters, under existing law:
 
        For  Florida state income tax purposes, the Trust will not be subject to
    the Florida income tax imposed by the Florida Code so long as the Trust  has
    no  income subject to federal  taxation. In addition, political subdivisions
    of Florida do not impose any income taxes.
 
        Because  Florida  does  not  impose   an  income  tax  on   individuals,
    non-corporate  Unitholders will not be subject  to any Florida income tax on
    income realized by the Trust. Each  corporate Unitholder will be subject  to
    Florida  income taxation on  its share of  the income realized  by the Trust
    notwithstanding the  tax exempt  status of  the interest  received from  any
    bonds under Section 103(a) of the Internal Revenue Code of 1986 or any other
    federal  law,  unless the  interest  income constitutes  nonbusiness income.
    Nevertheless, any corporate Unitholder that  has its commercial domicile  in
    Florida  will be taxable  under the Florida  Code on its  share of the Trust
    income which constitutes nonbusiness income.
 
        Trust Units  will be  subject to  Florida estate  tax only  if owned  by
    Florida  residents,  certain natural  persons not  domiciled in  Florida, or
    certain natural persons  not residents  of the United  States. However,  the
    Florida  estate tax is limited  to the amount of  the credit allowable under
    the applicable  Federal Revenue  Act (currently  Section 2011  (and in  some
    cases  Section 2102) of the  Internal Revenue Code of  1986, as amended) for
    death taxes actually paid to the several states.
 
        Neither the Florida Bonds nor the  Units will be subject to the  Florida
    ad valorem property tax or Florida sales or use tax.
 
                                       31
<PAGE>
        Because   Bonds  issued  by  the  State  of  Florida  or  its  political
    subdivisions or  by  the  Commonwealth  of Puerto  Rico,  Guam,  the  Virgin
    Islands,  American Samoa  and the Northern  Mariana Islands  are exempt from
    Florida intangible  personal property  taxation under  Chapter 199,  Florida
    Statutes,  as amended, the  Trust will not be  subject to Florida intangible
    personal property tax. In addition, the  Unitholders will not be subject  to
    Florida intangible personal property tax on the Units.
 
ECONOMIC FACTORS--FLORIDA
 
    POPULATION.   In 1980, Florida was the  seventh largest state in the U.S. by
population. The State has grown dramatically since then and as of April 1, 1992,
ranks fourth with an estimated population of 13.4 million. Florida's attraction,
as both a growth and retirement state, has kept net migration fairly steady with
an average of  252,000 new residents  a year  from 1982 through  1991. The  U.S.
average  population increase  since 1982 is  about 1%  annually, while Florida's
average annual  rate of  increase is  about 2.8%.  Florida continues  to be  the
fastest  growing of the eleven largest  states. This strong population growth is
one reason the State's economy is performing better than the nation as a  whole.
In  addition to attracting senior citizens to Florida as a place for retirement,
the State is also recognized as  attracting a significant number of working  age
individuals.  Since 1982, the prime working  age population (18-44) has grown at
an average  annual  rate of  3.3%.  The share  of  Florida's total  working  age
population (18-59) to total State population is approximately 54%. This share is
not expected to change appreciably into the twenty-first century.
 
    INCOME.   The  State's personal  income has  been growing  strongly the last
several years and has generally  outperformed both the U.S.  as a whole and  the
southeast  in particular, according  to the U.S. Department  of Commerce and the
Florida Consensus Economic Estimating Conference. This  is due to the fact  that
Florida's population has been growing at a very strong pace and, since the early
1970's,  the State's economy has diversified so as to provide greater insulation
from national  economic  downturns.  As  a result,  Florida's  real  per  capita
personal  income has tracked  closely with the national  average and has tracked
above the southeast. From 1983 through 1992, the State's real per capita  income
rose  at an average of 5.4% per year,  while the national real per capita income
increased at an average of 5.5% per year.
 
    Because Florida  has a  proportionately greater  retirement age  population,
property  income (dividends, interest,  and rent) and  transfer payments (Social
Security and pension  benefits, among  other sources of  income) are  relatively
more  important  sources  of  income. For  example,  Florida's  total  wages and
salaries and other labor income in 1992 was 61% of total personal income,  while
a  similar  figure  for the  nation  for  1990 was  72%.  Transfer  payments are
typically less  sensitive to  the  business cycle  than employment  income  and,
therefore, act as stabilizing forces in weak economic periods.
 
    The State's per capita personal income in 1992 of $19,347 was slightly below
the  national  average  of  $19,841  and significantly  ahead  of  that  for the
southeast United States, which was $17,661. Real personal income in the State is
estimated to increase 3.7% in 1993-94  and 4.6% in 1994-95. Personal income  was
also  affected by Huricane  Andrew which should have  some lingering effects. By
the end of 1994-95, real personal income per capita in the State is projected to
average 4.8% higher than its 1992-93 level.
 
    EMPLOYMENT.  Since 1980,  the State's job creation  rate is well over  twice
the  rate for the nation as a whole, and its growth rate in new non-agricultural
jobs is the fastest of the 11 most populous states, second only to California in
the absolute number of new jobs created. Contributing to the State's rapid  rate
of  growth  in employment  and income  is international  trade. Since  1980, the
State's unemployment rate has  generally been below that  of the U.S. In  recent
years,  however, as  the State's  economic growth  has slowed  from its previous
highs, the State's unemployment rate has tracked above the national average. The
average rate in
 
                                       32
<PAGE>
Florida since 1980 has been 6.5%  while the national average is 7.1%.  According
to  the  U.S.  Department  of  Commerce, the  Florida  Department  of  Labor and
Employment Security, and  the Florida Consensus  Economic Estimating  Conference
(together,  the "Organization"), the  State's unemployment rate  was 8.2% during
1992. As of October 1993, the Organization estimates that the unemployment  rate
will be 6.5% for 1993-94 and 6.0% in 1994-95.
 
    The rate of job creation in Florida's manufacturing sector has exceeded that
of the U.S. From the beginning of 1980 through 1992, the State added over 37,000
new  manufacturing  jobs, an  8.4% increase.  During  the same  period, national
manufacturing employment declined nine out of the thirteen years, for a loss  of
2,852,000 jobs.
 
    Total non-farm employment in Florida is expected to increase 2.8% in 1993-94
and  rise 3.8%  in 1994-95.  These figures,  as well  as the  figures for income
above, include the  post-Hurricane Andrew  impact. Trade and  services, the  two
largest  sources of employment in  the State, account for  more than half of the
total non-farm employment. Employment in the service sector's should  experience
an  increase of 3.9% in 1993-94, while growing 47% in 1994-95. Trade is expected
to expand 2.3% in 1994 and 3.4% in  1995. The service sector is now the  State's
largest employment category.
 
    CONSTRUCTION.   The State's economy has in the past been highly dependent on
the  construction  industry   and  construction   related  manufacturing.   This
dependency  has declined in recent  years and continues to do  so as a result of
continued diversification of the  State's economy. For  example, in 1980,  total
contract  construction employment  as a share  of total  non-farm employment was
just over 7.0%, and in 1992 the share had edged downward to 5.0%. This trend  is
expected  to continue  as the State's  economy continues  to diversify. Florida,
nevertheless, has a dynamic construction industry, with single and  multi-family
housing  starts accounting for 8.3%  of total U.S. housing  starts in 1992 while
the State's population is 5.3% of  the U.S. total population. Florida's  housing
starts  since 1980  have represented  an average  of 11.1%  of the  U.S.'s total
annual starts, and  since 1980,  total housing  starts have  averaged 160,400  a
year.
 
    A  driving  force  behind the  State's  construction industry  has  been the
State's rapid rate  of population growth.  Although the State  currently is  the
fourth  most populous  state, its annual  population growth is  now projected to
decline as the number of people moving into the State is expected to hover  near
the  mid 250,000  range annually  throughout the  1990's. This  population trend
should  provide  plenty  of  fuel  for  business  and  home  builders  to   keep
construction  activity lively in  Florida for some time  to come. However, other
factors do  influence the  level  of construction  in  the State.  For  example,
federal tax reform in 1986 and other changes to the federal income tax code have
eliminated  tax deductions for  owners of more than  two residential real estate
properties  and  have  lengthened  depreciation  schedules  on  investment   and
commercial  properties.  Economic  growth and  existing  supplies  of commercial
buildings and homes also contribute to the level of construction activity in the
State.
 
    Hurricane Andrew left some parts of south Florida devastated. Post-Hurricane
Andrew clean up and rebuilding have changed the outlook for the State's economy.
Single and  multi-family housing  starts in  1993-94 are  projected to  reach  a
combined  level  of 120,000,  and to  increase to  138,100 next  year. Lingering
recessionary effects on consumers and tight  credit are some of the reasons  for
relatively  slow core construction  activity, as well  as lingering effects from
the 1986 tax reform legislation discussed above. However, construction is one of
the sectors most severely affected by  Hurricane Andrew. Low interest rates  and
pent  up  demand  combined  with improved  consumer  confidence  should  lead to
improved housing  starts.  The  construction figures  above  include  additional
housing   starts  as  a  result  of   destruction  by  Hurricane  Andrew.  Total
construction expenditures  are  forecasted  to  increase  13.8%  this  year  and
increase 14.3% next year.
 
                                       33
<PAGE>
    TOURISM.     Tourism  is   one  of  Florida's   most  important  industries.
Approximately 40.9 million tourists  visited the State in  1992, as reported  by
the  Florida Department of  Commerce. In terms of  business activities and state
tax revenues, tourists in Florida in  1992 represented an estimated 4.5  million
additional  residents. Visitors to the  State tend to arrive  equally by air and
car. The State's tourism industry over the years has become more  sophisticated,
attracting  visitors year-round and, to a  degree, reducing its seasonality. The
dollar's  depreciation  has  enhanced  the  State's  tourism  industry.  Tourist
arrivals  should be  flat this  year, but  recover next  year with  4.0% growth.
Tourist arrivals to Florida  by air and  car are expected  to diverge from  each
other,  air decreasing 5.1% and auto increasing  5.3%. By the end of the State's
current fiscal  year,  41.9  million domestic  and  international  tourists  are
expected  to have visited the State, up 0.2%. In 1994-95 tourist arrivals should
approximate 43.6 million.
 
    REVENUES AND EXPENSES.  Estimated  fiscal year 1992-93 General Revenue  plus
Working  Capital funds available  to the State total  $13,554.8 million, an 8.2%
increase over  1992-93. This  reflects a  transfer of  $190 million,  out of  an
estimated  $220.0 million in non-recurring revenue due to Hurricane Andrew, to a
hurricane relief trust fund. Of the  total General Revenue plus Working  Capital
funds  available to the  State, $12,959.2 million of  that is Estimated Revenues
(excluding the Hurricane Andrew  impact), which represents  an increase of  7.5%
over  the previous  year's Estimated  Revenues. With  effective General Revenues
plus Working  Capital Fund  appropriations  at $13,276.9  million,  unencumbered
reserves at the end of 1993-94 are estimated at $277.9 million. Estimated fiscal
year  1994-95  General  Revenue  plus  Working  Capital  Funds  available  total
$14,310.7 million, a 5.6% increase over 1993-94. This amount reflects a transfer
of $159,000  million in  non-recurring  revenue due  to  Hurricane Andrew  to  a
hurricane  relief fund. The  $13,944.0 million in  Estimated Revenues (excluding
Hurricane Andrew impact) represent an increase of 7.6% over the previous  year's
Estimated  Revenues.  The massive  effort to  rebuild  and replace  destroyed or
damaged property  in  the  wake  of Hurricane  Andrew  is  responsible  for  the
substantial  positive revenue impacts shown  here. Most of the  impact is in the
increase in the State's sales tax.
 
    In fiscal  year  1992-93, approximately  62%  of the  State's  total  direct
revenue  to its three operating funds was derived from State taxes, with Federal
grants and other special revenue accounting for the balance. State sales and use
tax, corporate income  tax, intangible  personal property tax  and beverage  tax
amounted  to 68%, 7%,  4% and 4%,  respectively, of total  General Revenue Funds
available during fiscal 1992-93. In that same year, expenditures for  education,
health  and welfare, and  public safety amounted to  approximately 49%, 30%, and
11%, respectively, of total expenditures from the General Revenue Fund.
 
    The State's sales and use tax (6%) currently accounts for the State's single
largest source of tax receipts. Sightly less  than 10% of the State's sales  and
use tax is designated for local governments and is distributed to the respective
counties  in which  collected for  use by  the counties,  and the municipalities
therein. In  addition to  this distribution,  local governments  may assess  (by
referendum)  a 0.5%  or a 1.0%  discretionary sales surtax  within their county.
Proceeds from  this local  option  sales tax  are  earmarked for  funding  local
infrastructure programs and acquiring land for public recreation or conservation
or  protection of  natural resources as  provided under  applicable Florida law.
Certain  charter   counties   have   other   additional   taxing   powers,   and
non-consolidated  counties with  a population  in excess  of 800,000  may levy a
local option sales tax to fund indigent health care. It alone cannot exceed 0.5%
and when combined  with the infrastructure  surtax cannot exceed  1.0%. For  the
fiscal  year ended June 30,  1993, sales and use  tax receipts (exclusive of the
tax on gasoline  and special fuels)  totalled $9,426.0 million,  an increase  of
12.5% over fiscal year 1991-92.
 
                                       34
<PAGE>
    The  second largest source of State tax  receipts is the tax on motor fuels.
However, these revenues are almost  entirely dedicated trust funds for  specific
purposes and are not included in the State's General Revenue Fund.
 
    The  State imposes an alcoholic beverage wholesale tax (excise tax) on beer,
wine, and  liquor. This  tax  is one  of the  State's  major tax  sources,  with
revenues totalling $442.2 million in fiscal year ending June 30, 1993. Alcoholic
beverage  tax  receipts  increased  1.6% from  the  previous  year's  total. The
revenues collected from this tax are deposited into the State's General  Revenue
Fund.
 
    The  State imposes  a corporate  income tax.  All receipts  of the corporate
income tax are credited to the General  Revenue Fund. For the fiscal year  ended
June  30, 1993, receipts  from this source  were $846.6 million,  an increase of
5.6% from fiscal year 1991-92.
 
    The State  imposes a  documentary stamp  tax on  deeds and  other  documents
relating  to  realty,  corporate shares,  bonds,  certificates  of indebtedness,
promissory notes, wage assignments, and retail charge accounts. The  documentary
stamp  tax collections  totalled $639.0  million during  fiscal year  1992-93, a
27.0% increase from the previous fiscal year. Beginning in fiscal year  1992-93,
71.29% of these taxes is to be deposited to the General Revenue Fund.
 
    The  State imposes  an intangible  personal property  tax on  stocks, bonds,
including bonds secured by liens  in Florida real property, notes,  governmental
leaseholds,  and certain other intangibles not secured by a lien on Florida real
property. The  annual  rate  of  tax  is  2  mils.  The  State  also  imposes  a
non-recurring  2 mil tax on mortgages and  other obligations secured by liens on
Florida real  property.  In  fiscal  year  1992-93,  total  intangible  personal
property  tax collections  were $783.4  million, a  33% increase  over the prior
year. Of the tax proceeds, 66.5% is distributed to the General Revenue Fund.
 
    The State's severance tax taxes oil, gas and sulphur production, as well  as
the severance of phosphate rock and other solid minerals. Total collections from
severance  taxes total $64.5 million during  fiscal year 1992-93, down 4.0% from
the previous year. Currently  60% of this amount  is transferred to the  General
Revenue Fund.
 
    The  State began its  own lottery in  1988. State law  requires that lottery
revenues be  distributed  50.0%  to the  public  in  prizes, 38.0%  for  use  in
enhancing  education, and  the balance,  12.0%, for  costs of  administering the
lottery. Fiscal  year  1992-93  lottery ticket  sales  totalled  $2.13  billion,
providing education with approximately $810.4 million.
 
    The   State  has  continuously   been  dependent  on   the  highly  cyclical
construction and  construction  related  manufacturing  industries.  While  that
dependency  has  decreased, the  State is  still  somewhat at  the mercy  of the
construction and construction related manufacturing industries. The construction
industry is driven to a great extent by the State's rapid growth in  population.
While  the  rate  of  population  growth  in  the  State  has  slowed  somewhat,
expectations are that it  will continue to  remain somewhat constant  throughout
the  1990's. However, there can  be no assurance that  population growth will in
fact continue throughout  the 1990's  in which case  there could  be an  adverse
impact  on the State's economy through the loss of construction and construction
related manufacaturing jobs. Also, while interest rates remain low currently, an
increase in interest rates could significantly adversely impact the financing of
new construction within the State, thereby adversely impacting unemployment  and
other  economic  factors within  the  State. In  addition,  available commercial
office space has tended to remain high over the past few years. So long as  this
glut  of commercial rental  space continues, construction of  this type of space
will likely continue to remain slow.
 
    DEBT-BALANCED BUDGET REQUIREMENT.  At the end of fiscal 1992,  approximately
$5.21  billion in principal amount of debt  secured by the full faith and credit
of the State was outstanding. In addition, since July 1, 1992, the State  issued
about $1.26 billion in principal amount of full faith and credit bonds.
 
                                       35
<PAGE>
    The  State Constitution  and statutes  mandate that  the State  budget, as a
whole, and each separate fund within the  State budget, be kept in balance  from
currently  available revenues each  fiscal year. If  the Governor or Comptroller
believe a deficit will occur in any State fund, by statute, he must certify  his
opinion to the Administrative Commission, which then is authorized to reduce all
State agency budgets and releases by a sufficient amount to prevent a deficit in
any  fund.  Additionally, the  State  Constitution prohibits  issuance  of State
obligations to fund State operations.
 
    LITIGATION.  Currently under litigation are several issues relating to State
actions or State taxes that put  at risk substantial amounts of General  Revenue
Fund  monies.  Accordingly, there  is  no assurance  that  any of  such matters,
individually or in the aggregate, will not have a material adverse affect on the
State's financial position.
 
    In the wake of the  U.S. Supreme Court decisions  holding that a Hawaii  law
unfairly  discriminated against  out-of-state liquor producers,  suits have been
filed in the State's courts contesting a  similar State law (in effect prior  to
1985) that seek $384 million in tax refunds. A trial court, in a ruling that was
subsequently  upheld  by  the Florida  Supreme  Court,  found the  State  law in
question to  be  unconstitutional but  made  its ruling  operate  prospectively,
thereby denying any tax refunds. The issue of whether the unconstitutionality of
the tax should be applied retroactively was decided in favor of the taxpayers by
the  U.S. Supreme Court on June 4, 1990.  On remand from the U.S. Supreme Court,
the Florida Supreme Court, on January 15, 1991, mandated further proceedings  to
fashion a "clear and certain remedy" consistent with constitutional restrictions
and the opinion of the U.S. Supreme Court. The Florida Department of Revenue has
proposed  to the Florida Supreme Court that the Department be allowed to collect
back taxes from those  who received a  tax preference under  the prior law.  The
Florida  Supreme Court  remanded the  matter to  the Circuit  Court for  the 2nd
Judicial Circuit to hear arguments on the method chosen by the State to  provide
a  clear and certain remedy. On October  15, 1992, the Circuit Court trial judge
orally stated  that the  method chosen  by the  State is  unconstitutional.  The
Circuit  Court has not issued a written,  final order, which the State is likely
to appeal. An  unfavorable outcome could  result in the  State having to  refund
over $340 million.
 
    Florida  law provides preferential tax treatment  to insurers who maintain a
home office in the State.  Certain insurers challenged the constitutionality  of
this  tax preference and  sought a refund  of taxes paid.  Recently, the Florida
Supreme Court ruled  in favor of  the State.  This case and  others, along  with
pending refund claims, total about $200 million.
 
    The  State  maintains a  bond rating  of  Aa and  AA from  Moody's Investors
Service and Standard & Poor's Corporation, respectively, on the majority of  its
general  obligation bonds, although the rating of a particular series of revenue
bonds relates primarily to the project,  facility, or other revenue source  from
which  such series derives funds for repayment.  While these ratings and some of
the information  presented above  indicate  that the  State is  in  satisfactory
economic  health, there can be no assurance that  there will not be a decline in
economic conditions or that particular Florida Bonds purchased by the fund  will
not be adversely affected by any such changes.
 
    The  sources for the information presented above include official statements
and financial statements  of the  State of Florida.  While the  Sponsor has  not
independently  verified this information,  it has no reason  to believe that the
information is not correct in all material respects.
 
FLORIDA TAXABLE ESTIMATED CURRENT RETURN TABLE
 
    The following tables show the approximate taxable estimated current  returns
for  individuals  that are  equivalent to  tax-exempt estimated  current returns
under  published  1994  marginal  Federal  tax  rates.  The  tables  incorporate
increased  tax  rates  for higher-income  taxpayers  that were  included  in the
Revenue Reconciliation Act of 1993. The tables illustrate
 
                                       36
<PAGE>
what you  would have  to earn  on taxable  investments to  equal the  tax-exempt
estimated  current return for your income tax bracket. A taxpayer's marginal tax
rate is  affected by  both his  taxable income  and his  adjusted gross  income.
Locate your adjusted gross and your taxable income (which is your adjusted gross
income  reduced by any deductions and  exemptions), then locate your tax bracket
based on  joint or  single tax  filing. Read  across to  the equivalent  taxable
estimated current return you would need to match the tax-free income.
 
 COMBINED MARGINAL TAX RATES FOR JOINT TAXPAYERS WITH FOUR PERSONAL EXEMPTIONS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross       State and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 38.0 $     0-111.8      15.0   %     5.59    5.88    6.18    6.47    6.76    7.06    7.35    7.65
    38.0- 91.9       0-111.8      28.0         6.60    6.94    7.29    7.64    7.99    8.33    8.68    9.03
                 111.8-167.7      29.0         6.69    7.04    7.39    7.75    8.10    8.45    8.80    9.15
    91.9-140.0       0-111.8      31.0         6.88    7.25    7.61    7.97    8.33    8.70    9.06    9.42
                 111.8-167.7      32.0         6.99    7.35    7.72    8.09    8.46    8.82    9.19    9.56
                 167.7-290.2      34.5         7.25    7.63    8.02    8.40    8.78    9.16    9.54    9.92
   140.0-250.0   111.8-167.7      37.0         7.54    7.94    8.33    8.73    9.13    9.52    9.92   10.32
                 167.7-290.2      40.0         7.92    8.33    8.75    9.17    9.58   10.00   10.42   10.83
                  Over 290.2      37.0   2     7.54    7.94    8.33    8.73    9.13    9.52    9.92   10.32
    Over 250.0   167.7-290.2      44.0         8.48    8.93    9.38    9.82   10.27   10.71   11.16   11.61
                  Over 290.2      41.0   3     8.05    8.47    8.90    9.32    9.75   10.17   10.59   11.02
</TABLE>
 
  COMBINED MARGINAL TAX RATES FOR SINGLE TAXPAYERS WITH ONE PERSONAL EXEMPTION
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross       State and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 22.8 $     0-111.8      15.0   %     5.59    5.88    6.18    6.47    6.76    7.06    7.35    7.65
    22.8- 55.1       0-111.8      28.0         6.60    6.94    7.29    7.64    7.99    8.33    8.68    9.03
    55.1-115.0       0-111.8      31.0         6.88    7.25    7.61    7.97    8.33    8.70    9.06    9.42
                 111.8-234.3      32.5         7.04    7.41    7.78    8.15    8.52    8.89    9.26    9.63
   115.0-250.0   111.8-234.3      38.0         7.66    8.06    8.47    8.87    9.27    9.68   10.08   10.48
                  Over 234.3      37.0   2     7.54    7.94    8.33    8.73    9.13    9.52    9.92   10.32
    Over 250.0    Over 234.3      41.0   3     8.05    8.47    8.90    9.32    9.75   10.17   10.59   11.02
<FN>
- ------------------
      1  The table reflects the effect of the limitations on  itemized deductions and the deduction for personal exemptions. They
were designed to phase out certain benefits of these deductions for higher income taxpayers. These limitations, in effect,  raise
the  current maximum marginal Federal tax rate to approximately 44.0  percent for taxpayers filing a joint return and entitled to
four personal exemptions and to  approximately 41.0 percent for  taxpayers filing a single return  entitled to only one  personal
exemption.  These limitations are  subject to certain maximums,  which depend on  the number of exemptions  claimed and the total
amount of the taxpayer's itemized  deductions. For example, the  limitation on itemized deductions will  not cause a taxpayer  to
lose more than 80% of his allowable itemized deductions, with certain exceptions.
      2 Federal tax rate reverts to 36.0% after the 80% cap on the limitation on itemized deductions has been met.
      3 Federal tax rate reverts to 39.6% after the 80% cap on the limitation on itemized deductions has been met.
</TABLE>
 
    A  comparison of tax-free  and equivalent taxable  estimated current returns
with the returns on  various taxable investments is  one element to consider  in
making  an  investment  decision. The  Sponsor  may  from time  to  time  in its
advertising and sales materials  compare the then  current estimated returns  on
the Trust and returns over specified periods on other similar Nuveen Trusts with
returns  on taxable investments such as corporate or U.S. Government bonds, bank
CD's and  money  market  accounts or  money  market  funds, each  of  which  has
investment  characteristics  that  may  differ from  those  of  the  Trust. U.S.
Government bonds, for example, are  backed by the full  faith and credit of  the
U.S. Government and bank CD's and money market accounts are insured by an agency
of  the federal government. Money market accounts and money market funds provide
stability of principal, but pay interest  at rates that vary with the  condition
of  the short-term debt market. The  investment characteristics of the Trust are
described more fully elsewhere in this Prospectus.
 
                                       37
<PAGE>
   
Nuveen Tax-Exempt Unit Trust
Schedule of Investments at Date of Deposit
April 13, 1994
FLORIDA INSURED TRUST 188
(Series 724)
    
 
<TABLE>
<CAPTION>
                                                                                          Ratings(3)           Trustee's
                                                                      Optional       ---------------------   Determination
 Aggregate        Name of Issuer and Title of Issue Represented      Redemption       Standard                of Offering
  Principal        by Sponsor's Contracts to Purchase Bonds(1)      Provisions(2)     & Poor's    Moody's      Price(4)
<C>          <C> <S>                                              <C>                <C>         <C>        <C>
- ---------------------------------------------------------------------------------------------------------------------------
$   500,000      Dade County Health Facilities Authority             2003 at 101        AAA         Aaa     $       429,280
                   (Florida), Hospital Revenue Refunding Bonds,
                   Series 1993A (Baptist Hospital of Miami
                   Project), 5.25% Due 5/15/21. (Original issue
                   discount bonds delivered on or about March
                   17, 1993 at a price of 94.118% of principal
                   amount.)
    500,000      Jacksonville Electric Authority (Jacksonville,      2002 at 101        AAA         Aaa             440,675
                   Florida), Bulk Power Supply System Revenue
                   Bonds (Scherer 4 Project, Refunding Issue,
                   Series 1993 A), 5.25% Due 10/1/21.
    500,000      Orange County, Florida, Water Utilities System      2002 at 102        AAA         Aaa             501,820
                   Revenue Bonds, Series 1992, 6.25% Due
                   10/1/17.
    500,000      Orlando (Florida) Utilities Commission, Water       2002 at 102        AAA         Aaa             490,245
                   and Electric Subordinated Revenue Bonds,
                   Series 1992A, 6.00% Due 10/1/20.
    500,000      Pinellas County (Florida), Health Facilities        2003 at 102        AAA         Aaa             458,060
                   Authority, Hospital Revenue Bonds, Series
                   1993 (Morton Plant Health System Project),
                   5.625% Due 11/15/23.
    500,000      Pinellas County, Florida, Sewer Revenue Bonds,      2002 at 102        AAA         Aaa             480,000
                   Series 1994, 5.875% Due 10/1/21.
    500,000      South Broward Hospital District (Florida),          2003 at 102        AAA         Aaa             450,655
                   Hospital Revenue and Refunding Revenue Bonds,
                   Series 1993, 5.50% Due 5/1/22.
- -----------                                                                                                 ---------------
$ 3,500,000                                                                                                 $     3,250,735
- -----------                                                                                                 ---------------
- -----------                                                                                                 ---------------
</TABLE>
 
See Notes to Schedules of Investments, page 81.
 
                                       38
<PAGE>
   
MASSACHUSETTS INSURED TRUST 112
    
   
    The  Portfolio of Massachusetts Insured Trust  112 consists of 7 obligations
issued by entities located in Massachusetts. Two Bonds in the Trust are  general
obligations  of the  governmental entities  issuing them  and are  backed by the
taxing powers thereof. Five Bonds in the  Trust are payable as to principal  and
interest  from  the  income of  a  specific  project or  authority  and  are not
supported by the issuer's power to levy taxes. The sources of payment for  these
Bonds  are divided  as follows:  College and  University Revenue,  2; Electrical
System Revenue, 1;  Health Care Facility  Revenue, 2.  All of the  Bonds in  the
Trust,  as insured, are  rated AAA by  Standard & Poor's  Corporation and Aaa by
Moody's Investors Service, Inc.
    
 
   
    At  the  Date  of  Deposit,  the  average  maturity  of  the  Bonds  in  the
Massachusetts  Insured Trust is 25.9 years. The average maturity of the Bonds in
a Trust is  calculated based upon  the stated  maturities of the  Bonds in  such
Trust  (or, with respect to Bonds for which funds or securities have been placed
in escrow to  redeem such  Bonds on  a stated call  date, based  upon such  call
date).  The average maturity  of the Bonds  in a Trust  may increase or decrease
from time to time as Bonds mature or are called or sold.
    
 
    Approximately 29% of  the aggregate  principal amount  of the  Bonds in  the
Trust  consists of obligations  of issuers whose  revenues are primarily derived
from  payments  to  colleges  and  universities,  including  tuition,  dormitory
revenues, grants and endorsements.
 
    Approximately  29% of  the aggregate  principal amount  of the  Bonds in the
Trust consists of obligations  of issuers whose  revenues are primarily  derived
from services provided by hospitals or other health care facilities.
 
    For  a discussion of the  risks associated with investments  in the bonds of
various issuers, see "General Trust Information" in this section.
 
   
    The Sponsor entered into  contracts to acquire the  Bonds between April  11,
1994  and April 12, 1994. The following summarizes certain information about the
Bonds as of the business day prior to the Date of Deposit:
    
 
<TABLE>
<CAPTION>
                                                                  Difference between Trustee's
                                                               Determination of Offering Price and
   Cost to    Profit (or loss)   Annual Interest   Bid Price              the Bid Price
   Sponsor       to Sponsor      Income to Trust    of Bonds       (as % of principal amount)
  ----------  -----------------  ----------------  ----------  -----------------------------------
  <S>         <C>                <C>               <C>         <C>
  $3,338,787       $22,013           $209,000      $3,343,300                 .50%
</TABLE>
 
    Neither  cost  to  Sponsor  nor   profit  (or  loss)  to  Sponsor   reflects
underwriting  profits or losses received or  incurred by the Sponsor through its
participation  in  underwriting  syndicates.  An  underwriter  or   underwriting
syndicate  purchases bonds  from the issuer  on a negotiated  or competitive bid
basis as principal with  the motive of  marketing such bonds  to investors at  a
profit.  The Sponsor did not participate as  either the sole underwriter or as a
manager or member of a syndicate that  acted as the original underwriter of  any
of the Bonds.
 
   
    Unitholders  may elect  to have  interest distributions  made on  a monthly,
quarterly or semi-annual basis. The interest on the Bonds initially deposited in
the Massachusetts Insured Trust, less estimated expenses, is estimated to accrue
at the  rate  of  $.01611  per  Unit per  day  under  the  semi-annual  plan  of
distribution,  $.01605 per Unit per day under the quarterly plan of distribution
and $.01596 per  Unit per  day under  the monthly  plan of  distribution. It  is
anticipated  that the amount of interest to be distributed per Unit in each year
under each plan  of distribution will  initially be substantially  equal to  the
Estimated Net Annual Interest Income per Unit for that plan.
    
 
                                       39
<PAGE>
    Details  of  interest distributions  per Unit  of the  Massachusetts Insured
Trust under the various plans appear in the following table based upon estimated
Net Annual Interest Income at the Date of Deposit:
 
<TABLE>
<CAPTION>
                                                                                                          Normal
                                                                                                      Distributions
Massachusetts Insured Trust                              1994                          1995              per Year
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        5/1            8/1           11/1            2/1
Distribution Date.....................       5/15           8/15          11/15           2/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .2872(1)                                                  $  5.7486
                                                          --------  $.4788 every month  --------
Quarterly Distribution Plan...........  $   .2872(1)   $  1.4445(2)   $  1.4445      $  1.4445        $  5.7806
Semi-Annual Distribution Plan.........  $   .2872(1)                  $  2.8998(3)                    $  5.7996
- --------------------------------------------------------------------------------------------------------------------
<FN>
 * Record Dates for semi-annual distributions are May 1 and November 1; for quarterly distributions, they are February 1, May  1,
   August 1 and November 1. Record Dates for monthly distributions are the first day of each month.
(1)  The first distribution will be paid to all Unitholders,  regardless of the distribution plan selected. Such distribution may
    be more or less than a regular monthly distribution.
(2) Regular 3-month distribution.
(3) Regular 6-month distribution.
</TABLE>
 
   
    The accrual amounts set forth above, and  in turn the amount of interest  to
be  distributed annually per Unit, will  generally change as Bonds are redeemed,
mature or are sold or as fees and expenses increase or decrease.
    
 
TAX STATUS--MASSACHUSETTS INSURED TRUST
 
    For a discussion of the Federal tax status of income earned on Massachusetts
Insured Trust Units, see Section 11.
 
    In the opinion  of Edwards &  Angell, special Massachusetts  counsel to  the
Trust, based on rulings by the Commissioner of Revenue and under existing law:
 
        For  Massachusetts income tax purposes, each  Trust will be treated as a
    corporate trust under Section 8 of  Chapter 62 of the Massachusetts  General
    Laws  ("M.G.L.") and not  as a grantor  trust under Section  10(e) of M.G.L.
    Chapter 62.
 
        The Trust will not be held  to be engaging in business in  Massachusetts
    within  the meaning of said Section 8 and will, therefore, not be subject to
    Massachusetts income tax.
 
        Unitholders who  are  subject  to Massachusetts  income  taxation  under
    M.G.L. Chapter 62 will not be required to include their respective shares of
    the  earnings of  or distributions from  the Massachusetts  Insured Trust in
    their Massachusetts  gross  income  to  the extent  that  such  earnings  or
    distributions represent tax-exempt interest excludable from gross income for
    Federal  income tax purposes received by  the Massachusetts Insured Trust on
    obligations  issued   by   Massachusetts,  its   counties,   municipalities,
    authorities,  political subdivisions or instrumentalities or by Puerto Rico,
    the Virgin Islands, Guam, the Northern Mariana Islands or other  possessions
    of  the United States within  the meaning of Section  103(c) of the Internal
    Revenue Code of 1986, as amended ("Massachusetts Obligations").
 
        In the  case  of a  Massachusetts  Insured Trust,  Unitholders  who  are
    subject to Massachusetts income taxation under M.G.L. Chapter 62 will not be
    required   to  include  their  respective  shares  of  the  earnings  of  or
    distributions from such  Trust in  their Massachusetts gross  income to  the
    extent  that such earnings or distributions are derived from the proceeds of
    insurance obtained  by  the  Sponsor of  such  Trust  or by  the  issuer  or
    underwriter  of an  obligation held  by such  Trust that  represent maturing
    interest on defaulted
 
                                       40
<PAGE>
    obligations held  by  the Trustee,  if  and to  the  same extent  that  such
    earnings  or distributions would have been  excludable from the gross income
    of such  Unitholders if  derived from  interest paid  by the  issuer of  the
    defaulted obligation.
 
        Unitholders  which  are corporations  subject  to taxation  under M.G.L.
    Chapter 63  will be  required  to include  their  respective shares  of  the
    earnings  of or  distributions from the  Trust in  their Massachusetts gross
    income to the extent that such earnings or distributions represent  interest
    from  bonds, notes  or indebtedness  of any  state, including Massachusetts,
    except for interest which is specifically exempted from such tax by the acts
    authorizing issuance of said Massachusetts Obligations.
 
        The Massachusetts Insured  Trust's capital gains  and/or capital  losses
    which  are includable  in the  Federal gross  income of  Unitholders who are
    subject to  Massachusetts  income  taxation  under  M.G.L.  Chapter  62,  or
    Unitholders  which are corporations subject  to Massachusetts taxation under
    M.G.L. Chapter 63  will be included  as capital gains  and/or losses in  the
    Unitholders'  Massachusetts gross income,  except for capital  gain which is
    specifically  exempted  from  taxation  under  such  Chapters  by  the  acts
    authorizing issuance of said Massachusetts Obligations.
 
        Unitholders  which are corporations subject  to tax under M.G.L. Chapter
    63 and which  are tangible  property corporations  will not  be required  to
    include  the Units  when determining the  value of  their tangible property.
    Unitholders which are intangible property  corporations will be required  to
    include the Units when determining their net worth.
 
        Gains or losses realized on sales or redemptions of Units by Unitholders
    who are subject to Massachusetts income taxation under M.G.L. Chapter 62, or
    Unitholders  which are corporations subject to Massachusetts income taxation
    under M.G.L. Chapter  63, will  be includable in  their Massachusetts  gross
    income.  In  determining such  gain or  loss Unitholders  will, to  the same
    extent required for Federal tax purposes, have to adjust their tax bases for
    their  Units  for  accrued  interest  received,  if  any,  on  Massachusetts
    Obligations  delivered to  the Trustee after  the Unitholders  pay for their
    Units, for amortization  of premiums, if  any, on Massachusetts  Obligations
    held  by the  Massachusetts Insured  Trust, and  for accrued  original issue
    discount with respect to  each Massachusetts Obligation  which, at the  time
    the Massachusetts Obligation was issued, had original issue discount.
 
        The  Units of the  Trust are not  subject to any  property tax levied by
    Massachusetts or any political  subdivision thereof, nor  to any income  tax
    levied  by any such political subdivision.  They are includable in the gross
    estate of a deceased holder who is a resident of Massachusetts for  purposes
    of the Massachusetts Estate Tax.
 
ECONOMIC FACTORS--MASSACHUSETTS
 
    Without  intending  to be  complete,  the following  briefly  summarizes the
current financial situation, as  well as some of  the complex factors  affecting
the   financial   situation,   in  the   Commonwealth   of   Massachusetts  (the
"COMMONWEALTH"). It  is derived  from sources  that are  generally available  to
investors  and is based in part on information obtained from various agencies in
Massachusetts. No  independent verification  has been  made of  the accuracy  or
completeness of the following information.
 
    There  can  be no  assurance that  current or  future statewide  or regional
economic difficulties,  and  the  resulting  impact  on  Commonwealth  or  local
governmental  finances generally, will not adversely  affect the market value of
Massachusetts Obligations in the Trust or the
 
                                       41
<PAGE>
ability of particular obligors  to make timely payments  of debt service on  (or
relating to) those obligations.
 
    Since  1988, there  has been  a significant  slowdown in  the Commonwealth's
economy, as indicated by  a rise in  unemployment, a slowing  of its per  capita
income  growth and declining state revenues.  In fiscal 1991, the Commonwealth's
expenditures for  state  government  programs  exceeded  current  revenues,  and
although  fiscal 1992 revenues exceeded expenditures,  no assurance can be given
that lower than expected tax revenues will not resume and continue.
 
    1993 FISCAL  YEAR  BUDGET.    On  July 20,  1992  the  Governor  signed  the
Commonwealth's  budget  for  fiscal  1993. This  budget  is  based  on estimated
budgeted revenue and  other sources  of $14.641 billion,  including current  tax
revenue estimates of $9.940 billion. Based on December 31, 1992 tax collections,
tax revenues for the fiscal 1993 budget were revised upwards on January 27, 1993
from  the  original  consensus tax  estimate  of $9.685  billion.  Estimated tax
revenues for  fiscal 1993  are  approximately $456.4  million greater  than  tax
revenues  for fiscal  1992. As  modified by  legislation enacted  since July 20,
1992, the fiscal 1993  budget provides for  estimated budgeted expenditures  and
other  uses of $14.976 billion,  which equals the sum  of projected revenues and
other sources plus approximately $319.4 million of the estimated $549.4  million
positive  budgetary fund balances existing  as of the close  of fiscal 1992. The
projected fiscal  1993  budgeted  expenditures  and  other  uses  represents  an
increase  of 11.6% from fiscal  1992. The fiscal 1993  budget remains subject to
certain of  the Governor's  line-item vetoes,  which may  be overridden  by  the
legislature.
 
    With  regard to revenues, the fiscal  1993 budget depends on certain non-tax
revenue sources, the availability of which is subject to certain  contingencies.
The  fiscal  1993 budget  assumes  continued federal  reimbursements  related to
uncompensated care  payments,  which  is expected  to  be  approximately  $212.7
million in fiscal 1993.
 
    The  fiscal 1993 budget  also assumes that  the sale of  certain assets will
generate approximately $45.0  million in  non-tax revenues,  however, there  are
currently  no agreements to sell  such assets and the market  for some or all of
such assets  in unfavorable.  The fiscal  1993 budget  also assumes  receipt  of
approximately  $80.0  million from  the  Massachusetts Water  Resource Authority
("MWRA") under an arrangement which would, among other things, relieve the  MWRA
of certain comparable future financial commitments to the Commonwealth.
 
    1992  FISCAL YEAR.  The Commonwealth's  budgeted expenditures and other uses
were approximately $13.420 billion  in fiscal 1992, which  is $238.7 million  or
1.7%  lower than fiscal  1991 budgeted expenditures.  Final fiscal 1992 budgeted
expenditures were $300  million more  than the  initial July  1991 estimates  of
budgetary  expenditures,  due in  part to  increases  in certain  human services
programs, including an increase of $268.7  million for the Medicaid program  and
$50.0  million  for  mental retardation  consent  decree  requirements. Budgeted
revenues and other sources for fiscal 1992 totaled approximately $13.728 billion
(including  tax  revenues  of  $9.484   billion),  reflecting  an  increase   of
approximately  0.7% from  fiscal 1991  to 1992  and an  increase of  5.4% in tax
revenues for the same  period. Overall, fiscal 1992  is estimated to have  ended
with an excess of revenues and other sources over expenditures and other uses of
$312.3 million. After payment in full of the quarterly distribution of local aid
to  the Commonwealth's cities  and towns ("LOCAL  AID") in the  amount of $514.0
million due  on June  30,  1992, retirement  of the  Commonwealth's  outstanding
commercial  paper  (except for  approximately $50  million of  bond anticipation
notes) and certain other short term borrowings, as of June 30, 1992, the end  of
fiscal 1992,
 
                                       42
<PAGE>
the  Commonwealth showed a year-end cash position of approximately $731 million,
as compared with the Commonwealth's cash balance of $182.3 million at the end of
fiscal 1991.
 
    1991 FISCAL YEAR.  Budgeted expenditures for fiscal 1991 were  approximately
$13.659 billion, as against budgeted revenues and other sources of approximately
$13.634  billion. The Commonwealth  suffered an operating  loss of approximately
$21.2 million. Application of the adjusted  fiscal 1990 fund balances of  $258.3
resulted  in  a  fiscal 1991  budgetary  surplus  of $237.1  million.  State law
requires that approximately $59.2 million of the fiscal year ending balances  of
$237.1  million be placed in the Stabilization  Fund, a reserve from which funds
can be appropriated (i) to make up any difference between actual state  revenues
in  any fiscal year  in which actual  revenues fall below  the allowable amount,
(ii) to replace state and local losses by federal funds or (iii) for any  event,
as  determined by the legislature, which threatens the health, safety or welfare
of the  people  or the  fiscal  stability of  the  Commonwealth or  any  of  its
political subdivisions.
 
    Upon  taking office in January  1991, the new Governor  proposed a series of
legislative and  administrative  actions, including  withholding  of  allotments
under  Section 9C of Chapter  29 of the General  Laws, intended to eliminate the
projected deficits.  The  new Governor's  review  of the  Commonwealth's  budget
indicated  projected spending of $14.105 billion  with an estimated $850 million
in budget balancing measures that would be  needed prior to the close of  fiscal
1991.  At that time, estimated tax revenues were revised to $8.845 billion, $903
million less than was estimated at the time the fiscal 1991 budget was  adopted.
The  Legislature  adopted a  number of  the  Governor's recommendations  and the
Governor took certain administrative actions not requiring legislative approval,
including the adoption of a state employee furlough program. It is estimated  by
the  Commonwealth that spending reductions  achieved through savings initiatives
and withholding of  allotments total approximately  $484.3 million in  aggregate
for  fiscal  1991.  However,  these  savings  and  reductions  may  be  impacted
negatively by  litigation pursued  by third  parties concerning  the  Governor's
action under Section 9C of Chapter 29 of the General Laws and with regard to the
state employee furlough program.
 
    In  addition, the new administration  in May 1991 filed  an amendment to its
Medicaid state  plan that  enables  it to  claim  50% federal  reimbursement  on
uncompensated  care payments  for certain  hospitals in  the Commonwealth.  As a
result, in fiscal 1991 the Commonwealth obtained additional non-tax revenues  in
the  form  of  federal reimbursements  equal  to approximately  $513  million on
account of uncompensated care payments. This reimbursement claim was based  upon
recent  amendments of federal law contained in the Omnibus Budget Reconciliation
Act  of  1990  and,  consequently,  on  relatively  undeveloped  federal   laws,
regulations  and guidelines. At the request of the federal Health Care Financing
Administration, the Office of Inspector General of the United States  Department
of  Health and Human Services  has commenced an audit  of the reimbursement. The
administration, which had  reviewed the  matter with the  Health Care  Financing
Administration   prior  to   claiming  the  reimbursement,   believes  that  the
Commonwealth will prevail in  the audit. If the  Commonwealth does not  prevail,
the  Commonwealth  would have  the  right to  contest  an appeal,  but  could be
required to pay all or part of Medicaid reimbursements with interest and to have
such amount deducted from future reimbursement payments.
 
    1990, 1989 AND 1988 FISCAL YEARS.  In July 1989, the former Governor  vetoed
certain provisions included in the budget legislation for fiscal 1990, including
approximately  $273 million  of the  fiscal 1990  appropriations, including $100
million for Local Aid. One of the Governor's vetoes occasioned a default by  the
Commonwealth  on  a September  1,  1989 payment  of  $2.5 million  on  a general
obligation  contract  with  the  Massachusetts  Community  Development   Finance
Corporation  to  which  its  full  faith  and  credit  had  been  pledged, which
 
                                       43
<PAGE>
payment was made on  September 17, 1990 after  a supplemental appropriation  was
proposed by the Governor and passed by the legislature. The legislature overrode
the Governor's veto of $100 million of Local Aid and the Governor then indicated
that he was withholding the allotment for such expenditure. The Supreme Judicial
Court  invalidated the  Governor's withholding  of $210  million of appropriated
funds for certain Local Aid purposes in May 1990.
 
    Budgeted expenditures for fiscal 1988,  1989 and 1990 totaled  approximately
$11.6  billion, $12.6 billion and $13.3 billion, respectively. Budgeted revenues
for fiscal  1988,  1989 and  1990  totaled approximately  $11.3  billion,  $12.0
billion and $12.0 billion, respectively.
 
    EMPLOYMENT.   Reversing  a trend of  relatively low  unemployment during the
early  and  mid  1980s,  the  Massachusetts  unemployment  rate  has   increased
significantly   during  the  last  three   years  to  where  the  Commonwealth's
unemployment rate exceeds the national  unemployment rate. In 1989, the  average
Massachusetts unemployment rate was 4.0%, representing an 0.8% increase over the
average  1987 unemployment  rate, while  the average  United States unemployment
rate was 5.3%, representing a 0.9% decrease over the average 1987 United  States
unemployment  rate. During  1990, the Massachusetts  unemployment rate increased
from 4.5%  in January  to 6.1%  in  July to  6.7% in  August. During  1991,  the
Massachusetts  unemployment rate averaged  9.0% while the  average United States
unemployment rate was 6.7%. The Massachusetts unemployment rate in October  1992
was   8.4%,  down  from  8.6%  for  September  1992.  Other  factors  which  may
significantly and  adversely  affect the  employment  rate in  the  Commonwealth
include  the recently announced proposal by  the Clinton Administration to close
United  States  military  bases  and  reduce  federal  government  spending   on
defense-related  industries. Due to this and  other considerations, there can be
no assurances that  unemployment in the  commonwealth will not  increase in  the
future.
 
    DEBT  RATINGS.   S&P  currently rates  the Commonwealth's  uninsured general
obligation bonds at A, having upgraded the rating from BBB on September 9, 1992.
At the same time, S&P upgraded the rating of state and agency notes from SP2  to
SP1.  In raising  the ratings, S&P  cited the  Commonwealth's improved financial
status as key to the  upgrade. Prior to these  actions by S&P, the  Commonwealth
had experienced a steady decline in its S&P rating, with its most recent decline
beginning in May 1989, when S&P lowered its rating on the Commonwealth's general
obligation  bonds  and  other  Commonwealth  obligations  from  AA+  to  AA  and
continuing a series of further reductions until March 1992, when the rating  was
affirmed at BBB.
 
    Moody's  currently  rates  the Commonwealth's  uninsured  general obligation
bonds at A, having upgrade the rating from Baa on September 9, 1992. Moody's, in
raising the rating on  the bonds, pointed to  the Commonwealth's application  of
conservative  revenue assumptions and  efforts to impose  spending discipline as
having reduced the state's financial vulnerability and restored fiscal  control.
Prior to this increase, the Commonwealth had experienced a steady decline in its
rating by Moody's since May 1989. In May 1989, Moody's lowered its rating on the
Commonwealth's  notes from MIG-1 to MIG-2,  and its rating on the Commonwealth's
commercial paper  from  P-1  to  P-2.  On June  21,  1989  Moody's  reduced  the
Commonwealth's  general obligation  rating from Aa  to A. On  November 15, 1989,
Moody's reduced the rating on the  Commonwealth's general obligations from A  to
Baa1,  citing the Commonwealth's lowering of  revenue estimates, its fiscal year
1990 deficit and to the legislature's apparent lack of consensus on how to  deal
with  it. On  March 9,  1990, Moody's reduced  the rating  of the Commonwealth's
general obligation  bonds  from  Baa1  to Baa,  citing  "extended  inaction"  in
resolving  the Commonwealth's growing budget deficit.  There can be no assurance
that these ratings will continue.
 
                                       44
<PAGE>
    In recent  years, the  Commonwealth and  certain of  its public  bodies  and
municipalities have faced serious financial difficulties which have affected the
credit  standing  and borrowing  abilities of  Massachusetts and  its respective
entities and may have contributed to higher interest rates on debt  obligations.
The continuation of, or an increase in, such financial difficulties could result
in  declines  in  the market  values  of,  or default  on,  existing obligations
including Massachusetts Obligations  in the  Trust. Should there  be during  the
term  of  the Trust  a financial  crisis relating  to Massachusetts,  its public
bodies or municipalities, the market value and marketability of all  outstanding
bonds  issued by the  Commonwealth and its  public authorities or municipalities
including the Massachusetts Obligations in the Trust and interest income to  the
Trust could be adversely affected.
 
    TOTAL  BOND  AND  NOTE  LIABILITIES.    The  total  general  obligation bond
indebtedness of the Commonwealth  as of January 1,  1993 was approximately  $7.9
billion.  There  were also  outstanding  approximately $339  million  in general
obligation notes and other  short term general obligation  debt. The total  bond
and  note  liabilities of  the  Commonwealth as  of  January 1,  1993, including
guaranteed bond and contingent liabilities, was approximately $12.4 billion.
 
    DEBT SERVICE.    During  the  1980s,  capital  expenditures  were  increased
substantially,  which  has had  a short  term impact  on the  cash needs  of the
Commonwealth and also  accounts for a  significant rise in  debt service  during
that  period. Payments for debt service on Commonwealth general obligation bonds
and notes have risen at an average  annual rate of 18.7% from $563.7 million  in
fiscal 1988 to an estimated $942.3 million in fiscal 1991. Debt service payments
in  fiscal  1992 were  $898.3  million. Debt  service  payments for  fiscal 1992
reflect a $261 million one-time reduction  achieved as a result of the  issuance
of  the refunding bonds in September and October 1991. Debt service expenditures
are projected to be $1.195 billion for fiscal 1993 and $1.311 billion for fiscal
1994. The amounts  represented do not  include debt service  on notes issued  to
finance  the  fiscal  1989  deficit and  certain  Medicaid  related liabilities,
certain debt service contract assistance to the Massachusetts Bay Transportation
Authority, the Massachusetts Convention  Center Authority and the  Massachusetts
Government  Land  Bank, as  well as  grants to  municipalities under  the school
building assistance program  to defray a  portion of the  debt service costs  on
local school bonds.
 
    In  January 1990, legislation was  passed to impose a  limit on debt service
beginning in  fiscal  1991,  providing  that  no more  than  10%  of  the  total
appropriations  in any fiscal year  may be expended for  payment of interest and
principal on general obligation debt (excluding the Fiscal Recovery Bonds).  The
percentage  of total appropriations  expended from the  budgeted operating funds
for debt service (excluding  debt service on Fiscal  Recovery Bonds) for  fiscal
1992 is 4.9% which is projected to increase to 6.1% in fiscal 1993.
 
    CERTAIN   LIABILITIES.    Among  the  material  future  liabilities  of  the
Commonwealth are  significant unfunded  general  liabilities of  its  retirement
systems  and a program to fund such  liabilities; a program whereby, starting in
1978, the  Commonwealth began  assuming full  financial responsibility  for  all
costs  of  the administration  of  justice within  the  Commonwealth; continuing
demands to raise aggregate aid to cities, towns, schools and other districts and
transit authorities above current levels;  and Medicaid expenditures which  have
increased each year since the program was initiated. The Commonwealth has signed
consent  decrees to continue  improving mental health care  and programs for the
mentally retarded in order to meet federal standards, including those  governing
receipt  of federal  reimbursements under various  programs, and  the parties in
those cases have worked cooperatively to resolve the disputed issues.
 
                                       45
<PAGE>
    As a  result of  comprehensive legislation  approved in  January, 1988,  the
Commonwealth  is  required,  beginning in  fiscal  1989 to  fund  future pension
liabilities currently and  to amortize the  Commonwealth's unfunded  liabilities
over  40 years. Total pension costs increased  at an average annual rate of 5.8%
from $600.2  million  in fiscal  1988  to $751.5  million  in fiscal  1992.  The
estimated pension costs (inclusive of current benefits and pension reserves) for
fiscal  year 1993  are $873.8  million, representing  an increase  of 16.2% over
fiscal 1992 expenditures.
 
    LITIGATION.   The  Commonwealth is  engaged  in various  lawsuits  involving
environmental  and related  laws, including an  action brought on  behalf of the
U.S. Environmental Protection Agency alleging violations of the Clean Water  Act
and  seeking to enforce  the clean-up of  Boston Harbor. The  MWRA, successor in
liability  to  the  Metropolitan   District  Commission,  has  assumed   primary
responsibility  for developing  and implementing  a court-approved  plan for the
construction of the  treatment facilities necessary  to achieve compliance  with
federal  requirements. Under the Clean Water Act, the Commonwealth may be liable
for costs of compliance in these or any other Clean Water cases if the MWRA or a
municipality is  prevented from  raising  revenues necessary  to comply  with  a
judgment. The MWRA currently projects that the total cost of construction of the
treatment  facilities  required under  the court's  order is  approximately $3.5
billion in current dollars.
 
    The Massachusetts Hospital Association has brought an action challenging  an
element  of  the  Medicaid  rate-setting  methodologies  for  hospitals.  If the
plaintiff  hospitals  are  successful,  the  Commonwealth  may  face  additional
liabilities  on  the order  of $70  million  to $100  million. The  parties have
recently agreed to a  process of settlement and  payment of fiscal 1988  through
1991 claims, with payment to be made in fiscal 1993.
 
    There  are  also  actions  pending in  which  recipients  of  human services
benefits, such as welfare  recipients, the mentally  retarded, the elderly,  the
handicapped,  children, residents of state  hospitals and inmates of corrections
institutions, seek  expanded  levels  of  services and  benefits  and  in  which
providers  of services to such recipients challenge  the rates at which they are
reimbursed by  the Commonwealth.  To  the extent  that  such actions  result  in
judgments requiring the Commonwealth to provide expanded services or benefits or
pay  increased  rates, additional  operating and  capital expenditures  might be
needed to implement such judgments.
 
    In December, 1988, nine  municipalities of the  Commonwealth which claim  to
own  substantial interests in a nuclear  power plant in Seabrook, New Hampshire,
filed suit  against the  Commonwealth, the  Governor, the  Attorney General  and
other  state  officials  claiming  damages  arising  from  their  opposition  to
licensure of the plant.  The municipalities allege damages  in the amount of  $1
billion. The Commonwealth's motion to dismiss was allowed, but the plaintiffs in
that case have appealed and the case is under advisement in the Appeals Court.
 
    In  addition there are several tax  matters in litigation which could result
in significant refunds to taxpayers if decisions unfavorable to the Commonwealth
are rendered.  The amount  of taxes  and interest  at issue  in those  cases  is
approximately $195 million.
 
    A  variety of  other civil suits  pending against the  Commonwealth may also
affect its future  liabilities. These include  challenges to the  Commonwealth's
allocation  of school aid under Section 9C of Chapter 29 of the General Laws and
to adopt a state employee furlough program. No prediction is possible as to  the
ultimate outcome of these proceedings.
 
    Many  factors, in addition  to those cited  above, do or  may have a bearing
upon the financial condition of the Commonwealth, including social and  economic
conditions, many of which are not within the control of the Commonwealth.
 
                                       46
<PAGE>
    EXPENDITURE  AND TAX LIMITATION  MEASURES.  Limits  have been established on
state tax revenues by legislation approved  by the Governor on October 25,  1986
and  by an initiative petition  approved by the voters  on November 4, 1986. The
Executive Office for Administration and  Finance currently estimates that  state
tax  revenues will not reach the limit imposed by either the initiative petition
or the legislative enactment in fiscal 1992.
 
    Proposition 2 1/2, passed by the voters in 1980, led to large reductions  in
property  taxes, the  major source  of income  for cities  and towns,  and large
increases in state aid to offset such revenue losses. According to the Executive
Office for Administration and Finance, all of the 351 cities and towns have  now
achieved  a property  tax level of  no more  than 2.5% of  full property values.
Under the terms of Proposition 2 1/2, the property tax levy can now be increased
annually for all cities and towns, almost all by 2.5% of the prior fiscal year's
tax  levy  plus  2.5%  of  the  value  of  new  properties  and  of  significant
improvements  to  property.  Legislation  has also  been  enacted  providing for
certain local  option  taxes.  A  voter  initiative  petition  approved  at  the
statewide  general election in November, 1990 further regulates the distribution
of Local Aid of no  less than 40% of  collections from individual income  taxes,
sales  and  use taxes,  corporate excise  taxes,  and the  balance of  the state
lottery  fund.  If   implemented  in  accordance   with  its  terms   (including
appropriation  of the  necessary funds),  the petition  as approved  would shift
several hundred million dollars to direct Local Aid.
 
    OTHER TAX MEASURES.   To provide  revenue to  pay debt service  on both  the
deficit  and  Medicaid-related borrowings  and to  fund certain  direct Medicaid
expenditures, legislation  was enacted  imposing an  additional tax  on  certain
types  of personal income for 1989 and 1990 taxable years at rates of 0.375% and
0.75% respectively, effectively raising the tax  rate of 1989 from 5% to  5.375%
and  for 1990 to 5.75%. Recent legislation has effectively further increased tax
rates to 5.95% for  tax year 1990 to  6.25% for tax year  1991 and returning  to
5.95%  for tax year 1992 and subsequent tax  years. The tax is applicable to all
personal  income   except  income   derived  from   dividends,  capital   gains,
unemployment  compensation,  alimony,  rent, interest,  pensions,  annuities and
IRA/Keogh distributions.  The  income  tax rate  on  other  interest  (excluding
interest  on obligations of  the United States  and of the  Commonwealth and its
subdivisions), dividends  and net  capital  gains (after  a 50%  reduction)  was
increased  from 10% to 12%  for tax year 1990  and subsequent years, by recently
enacted legislation.
 
    OTHER ISSUERS OF  MASSACHUSETTS OBLIGATIONS.   There are a  number of  state
agencies, instrumentatlities and political subdivisions of the Commonwealth that
issue  Municipal Obligations, some  of which may  be conduit revenue obligations
payable from  payments from  private borrowers.  These entities  are subject  to
various  economic  risks  and  uncertainties,  and  the  credit  quality  of the
securities issued  by them  may vary  considerably from  the credit  quality  of
obligations  backed by the full faith and  credit of the Commonwealth. The brief
summary above does not address, nor does it attempt to address, any difficulties
and  the  financial   situations  of  those   other  issuers  of   Massachusetts
Obligations.
 
MASSACHUSETTS TAXABLE ESTIMATED CURRENT RETURN TABLE
 
    The  following tables show the approximate taxable estimated current returns
for individuals  that are  equivalent to  tax-exempt estimated  current  returns
under  combined Federal and  state taxes, using  published 1994 marginal Federal
tax rates and marginal state tax  rates currently available and scheduled to  be
in  effect.  The  tables  incorporate  increased  tax  rates  for  higher-income
taxpayers that were  included in  the Revenue  Reconciliation Act  of 1993.  For
cases  in which more than one state  bracket falls within a Federal bracket, the
highest state bracket is combined with  the Federal bracket. The combined  state
and  Federal tax  brackets shown  reflect the fact  that state  tax payments are
currently deductible for Federal  tax purposes. The  tables illustrate what  you
would  have to  earn on  taxable investments  to equal  the tax-exempt estimated
current return for your income tax bracket. A
 
                                       47
<PAGE>
taxpayer's marginal tax  rate is  affected by both  his taxable  income and  his
adjusted gross income. Locate your adjusted gross and your taxable income (which
is  your adjusted gross  income reduced by any  deductions and exemptions), then
locate your tax bracket based on joint or single tax filing. Read across to  the
equivalent taxable estimated current return you would need to match the tax-free
income.
 
 COMBINED MARGINAL TAX RATES FOR JOINT TAXPAYERS WITH FOUR PERSONAL EXEMPTIONS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross       State and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 38.0 $     0-111.8      25.0   %     6.33    6.67    7.00    7.33    7.67    8.00    8.33    8.67
    38.0- 91.9       0-111.8      36.5         7.48    7.87    8.27    8.66    9.06    9.45    9.84   10.24
                 111.8-167.7      37.5         7.60    8.00    8.40    8.80    9.20    9.60   10.00   10.40
    91.9-140.0       0-111.8      39.5         7.85    8.26    8.68    9.09    9.50    9.92   10.33   10.74
                 111.8-167.7      40.0         7.92    8.33    8.75    9.17    9.58   10.00   10.42   10.83
                 167.7-290.2      42.0         8.19    8.62    9.05    9.48    9.91   10.34   10.78   11.21
   140.0-250.0   111.8-167.7      44.5         8.56    9.01    9.46    9.91   10.36   10.81   11.26   11.71
                 167.7-290.2      47.0         8.96    9.43    9.91   10.38   10.85   11.32   11.79   12.26
                  Over 290.2      44.5   2     8.56    9.01    9.46    9.91   10.36   10.81   11.26   11.71
    Over 250.0   167.7-290.2      50.5         9.60   10.10   10.61   11.11   11.62   12.12   12.63   13.13
                  Over 290.2      48.0   3     9.13    9.62   10.10   10.58   11.06   11.54   12.02   12.50
</TABLE>
 
  COMBINED MARGINAL TAX RATES FOR SINGLE TAXPAYERS WITH ONE PERSONAL EXEMPTION
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross       State and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 22.8 $     0-111.8      25.0   %     6.33    6.67    7.00    7.33    7.67    8.00    8.33    8.67
    22.8- 55.1       0-111.8      36.5         7.48    7.87    8.27    8.66    9.06    9.45    9.84   10.24
    55.1-115.0       0-111.8      39.5         7.85    8.26    8.68    9.09    9.50    9.92   10.33   10.74
                 111.8-234.3      40.5         7.98    8.40    8.82    9.24    9.66   10.08   10.50   10.92
   115.0-250.0   111.8-234.3      45.5         8.72    9.17    9.63   10.09   10.55   11.01   11.47   11.93
                  Over 234.3      44.5   2     8.56    9.01    9.46    9.91   10.36   10.81   11.26   11.71
    Over 250.0    Over 234.3      48.0   3     9.13    9.62   10.10   10.58   11.06   11.54   12.02   12.50
<FN>
- ------------------
      1  The table reflects the effect of the limitations on  itemized deductions and the deduction for personal exemptions. They
were designed to phase out certain benefits of these deductions for higher income taxpayers. These limitations, in effect,  raise
the  current maximum marginal Federal tax rate to approximately 44.0  percent for taxpayers filing a joint return and entitled to
four personal exemptions and to  approximately 41.0 percent for  taxpayers filing a single return  entitled to only one  personal
exemption.  These limitations are  subject to certain maximums,  which depend on  the number of exemptions  claimed and the total
amount of the taxpayer's itemized  deductions. For example, the  limitation on itemized deductions will  not cause a taxpayer  to
lose more than 80% of his allowable itemized deductions, with certain exceptions.
      2 Federal tax rate reverts to 36.0% after the 80% cap on the limitation on itemized deductions has been met.
      3 Federal tax rate reverts to 39.6% after the 80% cap on the limitation on itemized deductions has been met.
</TABLE>
 
    A  comparison of tax-free  and equivalent taxable  estimated current returns
with the returns on  various taxable investments is  one element to consider  in
making  an  investment  decision. The  Sponsor  may  from time  to  time  in its
advertising and sales materials  compare the then  current estimated returns  on
the Trust and returns over specified periods on other similar Nuveen Trusts with
returns  on taxable investments such as corporate or U.S. Government bonds, bank
CD's and  money  market  accounts or  money  market  funds, each  of  which  has
investment  characteristics  that  may  differ from  those  of  the  Trust. U.S.
Government bonds, for example, are  backed by the full  faith and credit of  the
U.S. Government and bank CD's and money market accounts are insured by an agency
of  the federal government. Money market accounts and money market funds provide
stability of principal, but pay interest  at rates that vary with the  condition
of  the short-term debt market. The  investment characteristics of the Trust are
described more fully elsewhere in this Prospectus.
 
                                       48
<PAGE>
   
Nuveen Tax-Exempt Unit Trust
Schedule of Investments at Date of Deposit
April 13, 1994
MASSACHUSETTS INSURED TRUST 112
(Series 724)
    
 
<TABLE>
<CAPTION>
                                                                                          Ratings(3)           Trustee's
                                                                      Optional       ---------------------   Determination
 Aggregate        Name of Issuer and Title of Issue Represented      Redemption       Standard                of Offering
  Principal        by Sponsor's Contracts to Purchase Bonds(1)      Provisions(2)     & Poor's    Moody's      Price(4)
<C>          <C> <S>                                              <C>                <C>         <C>        <C>
- ---------------------------------------------------------------------------------------------------------------------------
$   500,000      Massachusetts Bay Transportation Authority,         2003 at 102        AAA         Aaa     $       450,745
                   General Transportation System Bonds, 1993
                   Series A Refunding, 5.50% Due 3/1/22.
                   (General Obligation Bonds.)
    500,000      Massachusetts Health and Educational Facilities     2004 at 102        AAA         Aaa             437,800
                   Authority, Revenue Bonds, New England Medical
                   Center Hospitals Issue, Series G-1, 5.375%
                   Due 7/1/24.
    500,000      Massachusetts Health and Educational Facilities     2002 at 102        AAA         Aaa             511,380
                   Authority, Revenue Bonds, Northeastern
                   University Issue, Series E, 6.55% Due
                   10/1/22.
    500,000      Massachusetts Health and Educational Facilities     2004 at 102        AAA         Aaa             470,135
                   Authority, Revenue Bonds, Smith College
                   Issue, Series D, 5.75% Due 7/1/16.
    500,000      Massachusetts Health and Educational Facilities     2002 at 102        AAA         Aaa             507,385
                   Authority, Revenue Bonds, South Shore
                   Hospital Issue, Series D, 6.50% Due 7/1/22.
    500,000      Massachusetts Municipal Wholesale Electric          2002 at 102        AAA         Aaa             488,955
                   Company, A Public Corporation of the
                   Commonwealth of Massachusetts Power Supply
                   System Revenue Bonds, 1992 Series E, 6.125%
                   Due 7/1/19.
    500,000      City of Springfield, Massachusetts, General         2003 at 102        AAA         Aaa             494,400
                   Obligation Municpal Purpose Loan of 1993
                   Bonds, Series B, 6.00% Due 1/15/13.
- -----------                                                                                                 ---------------
$ 3,500,000                                                                                                 $     3,360,800
- -----------                                                                                                 ---------------
- -----------                                                                                                 ---------------
</TABLE>
 
See Notes to Schedules of Investments, page 81.
 
                                       49
<PAGE>
   
NEW YORK INSURED TRUST 215
    
   
    The Portfolio of New York Insured Trust 215 consists of 8 obligations issued
by  entities located in New York. Two Bonds in the Trust are general obligations
of the governmental entities  issuing them and are  backed by the taxing  powers
thereof.  Six Bonds in the  Trust are payable as  to principal and interest from
the income of  a specific  project or  authority and  are not  supported by  the
issuer's power to levy taxes. The sources of payment for these Bonds are divided
as  follows: Dedicated-Tax Supported Revenue, 2; College and University Revenue,
2; Municipal Lease Revenue, 1; Water and/or  Sewer Revenue, 1. All of the  Bonds
in the Trust, as insured, are rated AAA by Standard & Poor's Corporation and Aaa
by Moody's Investors Service, Inc.
    
 
   
    At  the Date of Deposit,  the average maturity of the  Bonds in the New York
Insured Trust is 23.3  years. The average  maturity of the Bonds  in a Trust  is
calculated based upon the stated maturities of the Bonds in such Trust (or, with
respect  to Bonds for  which funds or  securities have been  placed in escrow to
redeem such Bonds on a stated call date, based upon such call date). The average
maturity of the Bonds in a Trust may  increase or decrease from time to time  as
Bonds mature or are called or sold.
    
 
   
    Approximately  14.3% of the  aggregate principal amount of  the Bonds in the
Trust (accounting for approximately 13.1% of the aggregate offering price of the
Bonds)   are    original   issue    discount   bonds.    See   "GENERAL    TRUST
INFORMATION--ORIGINAL  ISSUE  DISCOUNT  BONDS AND  STRIPPED  OBLIGATIONS"  for a
discussion of the  characteristics of  such bonds  and of  the risks  associated
therewith.
    
 
    Approximately  29% of  the aggregate  principal amount  of the  Bonds in the
Trust consists of obligations  of issuers whose  revenues are primarily  derived
from  payments  to  colleges  and  universities,  including  tuition,  dormitory
revenues, grants and endorsements.
 
    For a discussion of  the risks associated with  investments in the bonds  of
various issuers, see "General Trust Information" in this section.
 
   
    The  Sponsor entered into contracts to acquire  the Bonds on April 12, 1994.
The following summarizes certain information about the Bonds as of the  business
day prior to the Date of Deposit:
    
 
<TABLE>
<CAPTION>
                                                                  Difference between Trustee's
                                                               Determination of Offering Price and
   Cost to    Profit (or loss)   Annual Interest   Bid Price              the Bid Price
   Sponsor       to Sponsor      Income to Trust    of Bonds       (as % of principal amount)
  ----------  -----------------  ----------------  ----------  -----------------------------------
  <S>         <C>                <C>               <C>         <C>
  $3,295,256       $29,102           $202,875      $3,308,108                 .46%
</TABLE>
 
    Neither   cost  to  Sponsor  nor  profit   (or  loss)  to  Sponsor  reflects
underwriting profits or losses received or  incurred by the Sponsor through  its
participation   in  underwriting  syndicates.  An  underwriter  or  underwriting
syndicate purchases bonds  from the issuer  on a negotiated  or competitive  bid
basis  as principal with  the motive of  marketing such bonds  to investors at a
profit. The Sponsor did not participate as  either the sole underwriter or as  a
manager  or member of a syndicate that  acted as the original underwriter of any
of the Bonds.
 
   
    Unitholders may  elect to  have interest  distributions made  on a  monthly,
quarterly or semi-annual basis. The interest on the Bonds initially deposited in
the  New York Insured Trust, less estimated  expenses, is estimated to accrue at
the rate of $.01562 per Unit per day under the semi-annual plan of distribution,
$.01557 per Unit per  day under the quarterly  plan of distribution and  $.01548
per  Unit per day under the monthly plan of distribution. It is anticipated that
the amount of interest to be distributed  per Unit in each year under each  plan
of  distribution  will initially  be substantially  equal  to the  Estimated Net
Annual Interest Income per Unit for that plan.
    
 
                                       50
<PAGE>
    Details of interest  distributions per Unit  of the New  York Insured  Trust
under  the various plans appear in the  following table based upon estimated Net
Annual Interest Income at the Date of Deposit:
 
<TABLE>
<CAPTION>
                                                                                                          Normal
                                                                                                      Distributions
New York Insured Trust                                   1994                          1995              per Year
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        5/1            8/1           11/1            2/1
Distribution Date.....................       5/15           8/15          11/15           2/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .2786(1)                                                  $  5.5736
                                                          --------  $.4644 every month  --------
Quarterly Distribution Plan...........  $   .2786(1)   $  1.4013(2)   $  1.4013      $  1.4013        $  5.6056
Semi-Annual Distribution Plan.........  $   .2786(1)                  $  2.8116(3)                    $  5.6246
- --------------------------------------------------------------------------------------------------------------------
<FN>
 * Record Dates for semi-annual distributions are May 1 and November 1; for quarterly distributions, they are February 1, May  1,
   August 1 and November 1. Record Dates for monthly distributions are the first day of each month.
(1)  The first distribution will be paid to all Unitholders,  regardless of the distribution plan selected. Such distribution may
    be more or less than a regular monthly distribution.
(2) Regular 3-month distribution.
(3) Regular 6-month distribution.
</TABLE>
 
   
    The accrual amounts set forth above, and  in turn the amount of interest  to
be  distributed annually per Unit, will  generally change as Bonds are redeemed,
mature or are sold or as fees and expenses increase or decrease.
    
 
TAX STATUS--NEW YORK INSURED TRUST
 
    For a discussion  of the Federal  tax status  of income earned  on New  York
Insured Trust Units, see Section 11.
 
    In  the opinion of Edwards & Angell,  special counsel for the Series for New
York tax matters, under existing law:
 
        Interest  on  obligations  issued  by   New  York  State,  a   political
    subdivision  thereof, Puerto  Rico, the  Virgin Islands,  Guam, the Northern
    Mariana Islands,  or  other possessions  of  the United  States  within  the
    meaning  of Section 103(c) of the Internal  Revenue Code of 1986, as amended
    ("New York Obligations"), which would be  exempt from New York State or  New
    York  City personal  income tax if  directly received by  a Unitholder, will
    retain its  status as  tax-exempt interest  when received  by the  New  York
    Insured Trust (the "Trust") and distributed to such Unitholder.
 
        Interest  (less amortizable premium, if any) derived from the Trust by a
    resident of New  York State  (or New York  City) in  respect of  obligations
    issued  by states other than New York (or their political subdivisions) will
    be subject to New York State (or New York City) personal income tax.
 
        A Unitholder who is a resident of New York State (or New York City) will
    be subject to New  York State (or  New York City)  personal income tax  with
    respect  to gains realized  when New York  Obligations held in  the New York
    Insured  Trust  are  sold,  redeemed  or  paid  at  maturity  or  when   the
    Unitholder's  Units are sold or redeemed;  such gain will equal the proceeds
    of sale, redemption or payment less the tax basis of the New York Obligation
    or Unit (adjusted to reflect (a) the amortization of premium or discount, if
    any, on New York Obligations held  by the Trust, (b) accrued original  issue
    discount,  with respect to each  New York Obligation which,  at the time the
    New York Obligation  was issued, had  original issue discount,  and (c)  the
    deposit of New York Obligations with accrued interest in the Trust after the
    Unitholder's settlement date).
 
        Interest  or gain from  the Trust derived  by a Unitholder  who is not a
    resident of New York  State (or New  York City) will not  be subject to  New
    York  State (or  New York  City) personal income  tax, unless  the Units are
    property employed in a business, trade, profession or occupation carried  on
    in New York State (or New York City).
 
                                       51
<PAGE>
        In  the case  of the  Trust, amounts  paid under  the insurance policies
    representing maturing interest on defaulted New York Obligations held by the
    Trustee in the Trust  will be excludable  from New York  State and New  York
    City  income if, and  to the same  extent as, such  interest would have been
    excludable if paid by the respective issuer.
 
        For purposes of the New  York State and New  York City franchise tax  on
    corporations,  Unitholders which are subject to such tax will be required to
    include in their entire net income any interest or gains distributed to them
    even  though  distributed  in  respect  of  obligations  of  any  state   or
    subdivision thereof including New York.
 
        If borrowed funds are used to purchase Units in the Trust, all (or part)
    of  the interest on  such indebtedness will  not be deductible  for New York
    State and  New  York  City  tax  purposes. The  purchase  of  Units  may  be
    considered  to have been made with borrowed funds even though such funds are
    not directly traceable to the purchase of Units in any New York Trust.
 
ECONOMIC FACTORS--NEW YORK
 
    The Portfolio of the New York  Insured Trust includes obligations issued  by
New  York State  (the "State"), by  its various public  bodies (the "Agencies"),
and/or by other  entities located within  the State, including  the City of  New
York (the "City").
 
    Some of the more significant events and conditions relating to the financial
situation  in New York are summarized below.  This section provides only a brief
summary of the complex factors affecting the financial situation in New York and
is derived  from  sources that  are  generally  available to  investors  and  is
believed  to  be  accurate. It  is  based  in part  on  Official  Statements and
prospectuses issued by, and on other information reported by the State, the City
and the Agencies in connection with the issuance of their respective securities.
 
    There can  be no  assurance that  current or  future statewide  or  regional
economic  difficulties, and  the resulting impact  on State  or local government
finances generally,  will not  adversely affect  the market  value of  New  York
Municipal  Obligations held  in the  portfolio of  the Trust  or the  ability of
particular obligors to make timely payments of debt service on (or relating  to)
those obligations.
 
    (1)  THE STATE: The State has historically been one of the wealthiest states
in the nation.  For decades, however,  the State economy  has grown more  slowly
than  that of  the nation  as a  whole, gradually  eroding the  State's relative
economic  affluence.  Statewide,  urban  centers  have  experienced  significant
changes involving migration of the more affluent to the suburbs and an influx of
generally  less affluent residents. Regionally,  the older Northeast cities have
suffered because of the relative success that the South and the West have had in
attracting  people  and  business.  The  City  has  also  had  to  face  greater
competition  as  other  major  cities  have  developed  financial  and  business
capabilities  which  make  them  less  dependent  on  the  specialized  services
traditionally available almost exclusively in the City.
 
    The  State has  for many years  had a very  high state and  local tax burden
relative to other states. The burden of State and local taxation, in combination
with the many other causes of regional economic dislocation, has contributed  to
the  decisions of  some businesses and  individuals to relocate  outside, or not
locate within, the State.
 
    SLOWDOWN OF REGIONAL  ECONOMY. A national  recession commenced in  mid-1990.
The  downturn  continued  throughout the  State's  1990-91 fiscal  year  and was
followed by a period of weak economic growth during the 1991 calendar year.  For
calendar  year 1992,  the national economy  continued to recover,  although at a
rate below all  post-war recoveries. For  calendar year 1993,  the economy  grew
faster  than in 1992,  but still at a  very moderate rate,  as compared to other
recoveries.   Moderate   economic   growth   is   expected   to   continue    in
 
                                       52
<PAGE>
calendar  year 1994 at  a slightly faster  rate than in  1993. Economic recovery
started considerably later in  the State than  in the nation as  a whole due  in
part  to  the significant  retrenchment in  the  banking and  financial services
industries, downsizing  by  several  major  corporations,  cutbacks  in  defense
spending,  and an  oversupply of office  buildings. Many  uncertainties exist in
forecasts of both the national and State economies and there can be no assurance
that the State economy will  perform at a level  sufficient to meet the  State's
projections of receipts and disbursements.
 
    1994-95 FISCAL YEAR. The Governor presented the recommended Executive Budget
for  the 1994-95 fiscal year on January 18,  1994 and amended it on February 17,
1994. the Recommended 1994-95 State  Financial Plan projects a balanced  General
Fund,  receipts and transfers  from other funds at  $33.422 billion (including a
projected $339 million surplus anticipated for the State's 1993-94 fiscal  year)
and disbursements and transfers to other funds at $33.399 billion.
 
    The  recommended 1994-95  Executive Budget  includes tax  and fee reductions
($210 million), retention of revenues currently received, primarily by  deferral
of  a  scheduled  personal  income  tax  rate  reduction  ($1.244  billion), and
additional increases to miscellaneous revenue  sources ($237 million). No  major
additional programs are recommended other than a $198 million increase in school
aid,  $185 million in Medicaid cost-containment  initiatives and $110 million in
local government Medicaid costs to be assumed by the State.
 
    There can  be  no  assurance  that the  State  Legislature  will  enact  the
Executive  Budget  as  proposed,  nor  can  there  be  any  assurance  that  the
Legislature will enact a budget for the State's 1994-95 fiscal year prior to its
commencement. A delay in  its enactment may  negatively affect certain  proposed
actions and reduce projected savings.
 
    1993-94  FISCAL YEAR. The  1993-94 State Financial Plan  issued on April 16,
1993 projected General Fund receipts and  transfers from other funds at  $32.367
billion  and disbursements and  transfers to other funds  at $32.300 billion. In
comparison to the Governor's recommended Executive Budget for the 1993-94 fiscal
year, as  revised  on  February  18, 1993,  the  1993-94  State  Financial  Plan
reflected  increases in both  receipts and disbursements in  the General Fund of
$811 million.
 
    The 1993-94 State Financial Plan was  last revised on January 18, 1994.  The
State  projects a surplus of  $299 million, as the  result of developments which
positively impacted upon receipts  and disbursements. In  the revised Plan,  the
State  announced its intention to pay  a 53rd weekly Medicaid payment, estimated
at $120 million, and to add $82 million to a reserve fund for contingencies.
 
    On January 21, 1994, the State entered into a settlement with Delaware  with
respect  to STATE OF DELAWARE V. STATE OF  NEW YORK, which is discussed below at
STATE LITIGATION. The State made an immediate $35 million payment and agreed  to
make  a $33 million  annual payment in each  of the next  five fiscal years. The
State has not settled with other parties to the litigation and will continue  to
incur litigation expenses as to those claims.
 
    On  November  16, 1993,  the Court  of Appeals,  the State's  highest court,
affirmed the  decision  of  a  lower court  in  three  actions,  which  declared
unconstitutional State actuarial funding methods for determining State and local
contributions  to the State employee  retirement system. Following the decision,
the State Comptroller  developed a  plan to  phase in  a constitutional  funding
method and to restore prior funding levels of the retirement systems over a four
year  period. The plan is  not expected to require  the State to make additional
contributions with respect  to the  1993-94 fiscal  year nor  to materially  and
adversely affect the State's financial condition thereafter. Through fiscal year
1998-99,  the State  expects to contribute  $643 million more  to the retirement
plans than would have been required under the prior funding method.
 
                                       53
<PAGE>
    FUTURE FISCAL YEARS. There can be no assurance that the State will not  face
substantial  potential budget  gaps in the  future resulting  from a significant
disparity between tax revenues  projected from a  lower recurring receipts  base
and  the  spending required  to maintain  State programs  at current  levels. To
address  any  potential  budgetary  imbalance,  the  State  may  need  to   take
significant actions to align recurring receipts and disbursements.
 
    INDEBTEDNESS.  As of December 31, 1993,  the total amount of long-term State
general obligation debt authorized but unissued stood at $2.3 billion. As of the
same date, the State had approximately $5.0 billion in general obligation  bonds
and  $2.94 million  of Bond Anticipation  Notes ("BANS"). The  State issued $850
million in tax and revenue anticipation notes  ("TRANS") on May 4, all of  which
matured on December 31, 1993. The State does not project the need to issue TRANS
during the State's 1994-95 fiscal year.
 
    The  State anticipates that  its borrowings for  capital purposes during the
State's 1994-95 fiscal year will consist  of $413 million in general  obligation
bonds  and BANS. The  projection of the  State regarding its  borrowings for the
1994-95  fiscal  year  may  change  if  actual  receipts  fall  short  of  State
projections or if other circumstances require.
 
    In  June  1990,  legislation  was  enacted  creating  the  "New  York  Local
Government  Assistance  Corporation"  ("LGAC"),  a  public  benefit  corporation
empowered  to  issue long-term  obligations to  fund  certain payments  to local
governments traditionally funded through the State's annual seasonal  borrowing.
As  of February 28, 1994,  LGAC has issued its bonds  to provide net proceeds of
$3.7 billion. The Governor has recommended  the issuance of additional bonds  to
provide net proceeds of $315 million during the State's 1994-95 fiscal year.
 
    The  Legislature  passed  a proposed  constitutional  amendment  which would
permit the State subject to certain restrictions to issue revenue bonds  without
voter  referendum. Among the restrictions proposed  is that such bonds would not
be backed by the  full faith and  credit of the State.  The Governor intends  to
submit  changes to the proposed amendment,  which before becoming effective must
be passed again by the next separately-elected Legislature and approved by voter
referendum at a  general election.  The earliest  such an  amendment could  take
effect would be in November 1995.
 
    RATINGS.   The $850 million in TRANS issued  by the State in April 1993 were
rated SP-1-Plus by  S&P on April  26, 1993, and  MIG-1 by Moody's  on April  23,
1993,  which represents the highest ratings given by such agencies and the first
time the State's  TRANS have  received these ratings  since its  May 1989  TRANS
issuance.  Both  agencies  cited  the  State's  improved  fiscal  position  as a
significant factor in the upgrading of the April 1993 TRANS.
 
    Moody's rating of the State's general  obligation bonds stood at A on  April
23,  1993, and S&P's rating stood at A- with a stable outlook on April 26, 1993,
an improvement  from S&P's  negative outlook  prior to  April 1993.  Previously,
Moody's lowered its rating to A on June 6, 1990, its rating having been A1 since
May  27, 1986. S&P  lowered its rating from  A to A- on  January 13, 1992. S&P's
previous ratings were A from March 1990 to January 1992, AA- from August 1987 to
March 1990 and A+ from November 1982 to August 1987.
 
    Moody's maintained  its  A  rating  and  S&P  continued  its  A-  rating  in
connection with the State's issuance of $224.1 million of its general obligation
bonds in March 1994.
 
    (2)  THE CITY  AND THE  MUNICIPAL ASSISTANCE  CORPORATION ("MAC"):  The City
accounts for approximately 41%  of the State's  population and personal  income,
and the City's financial health affects the State in numerous ways.
 
    In  response to the City's fiscal crisis in 1975, the State took a number of
steps to assist the City in returning to fiscal stability. Among other  actions,
the State Legislature (i) created MAC to assist with long-term financing for the
City's  short-term debt and  other cash requirements and  (ii) created the State
Financial Control Board (the "Control Board") to review
 
                                       54
<PAGE>
and approve the City's budgets and City four-year financial plans (the financial
plans  also  apply  to  certain  City-related  public  agencies  (the   "Covered
Organizations")).
 
    Over  the past  three years,  the rate  of economic  growth in  the City has
slowed substantially,  and the  City's economy  is currently  in recession.  The
Mayor  is  responsible  for  preparing  the  City's  four-year  financial  plan,
including the City's  current financial  plan. The City  Comptroller has  issued
reports  concluding that the recession of the City's economy will be more severe
and last longer than is assumed in the financial plan.
 
    FISCAL YEAR 1993 AND 1994-1997 FINANCIAL PLAN.  The City's 1993 fiscal  year
results  are  projected to  be balanced  in  accordance with  generally accepted
accounting principles  ("GAAP").  The City  was  required to  close  substantial
budget  gaps  in its  1990,  1991 and  1992 fiscal  years  in order  to maintain
balanced operating results.
 
    On August 10, 1993, the City adopted and submitted to the Control Board  its
Financial  Plan for fiscal  years 1994-1997, which  was subsequently modified on
November 23, 1993. As  modified in November 1993,  the Plan projects a  balanced
budget for fiscal year 1994 based upon revenues of $31.585 billion, and projects
budget  gaps of $1.7 billion, $2.5 billion and $2.7 billion in fiscal years 1995
through 1997, respectively.
 
    During December  1993, a  three-member  panel appointed  by the  Mayor,  the
Office  of  the State  Deputy  Comptroller and  the  Control Board,  each issued
reports that were critical  of the City's 1994-1996  Financial Plan. While  each
report  noted  improvement in  the  outlook for  fiscal  year 1994,  the reports
indicated that the  budget gap for  fiscal year 1995  could be as  much as  $450
million higher than projected and that the budget gap might continue to increase
in  later years to as  much as $1.5 billion  above current projections by fiscal
year 1997. Recommendations included addressing the City's tax and cost structure
to maximize revenues on a recurring basis and minimize expenditures, a review of
capital  spending  plans,   service  cuts,  productivity   gains  and   economic
development measures.
 
    On  February  2,  1994,  the Mayor  proposed  further  modifications  to the
1994-1997 Financial Plan. The Mayor's  proposed Plan projects a balanced  budget
for  fiscal  year 1994,  assuming revenues  of $31.735  billion, and  includes a
reserve of  $198 million.  The proposed  modification projects  budget gaps  for
fiscal years 1995, 1996 and 1997 of $2.3 billion, $3.2 billion and $3.3 billion,
respectively.  The Mayor  identified $2.2  billion in  gap closing  measures for
fiscal year 1995. Implementation of these measures will require the  cooperation
of  municipal  labor  unions,  the  City  Council  and  the  State  and  Federal
governments. The Mayor's proposal  includes a tax  reduction program which  will
have a financial impact on later years.
 
    Given  the foregoing factors, there  can be no assurance  that the City will
continue to  maintain a  balanced budget,  or that  it can  maintain a  balanced
budget  without additional tax or other  revenue increases or reductions in City
services, which could adversely affect the City's economic base.
 
    Pursuant to State law, the City prepares a four-year annual financial  plan,
which is reviewed and revised on a quarterly basis and which includes the City's
capital,  revenue and  expense projections. The  City is required  to submit its
financial plans to review bodies, including the Control Board. If the City  were
to  experience certain adverse financial circumstances, including the occurrence
or the  substantial likelihood  and imminence  of the  occurrence of  an  annual
operating  deficit of more than $100 million or the loss of access to the public
credit  markets  to   satisfy  the   City's  capital   and  seasonal   financial
requirements,  the  Control Board  would be  required by  State law  to exercise
certain powers,  including  prior approval  of  City financial  plans,  proposed
borrowings and certain contracts.
 
    The  City depends  on the  State for State  aid both  to enable  the City to
balance its budget and to meet  its cash requirements. If the State  experiences
revenue shortfalls or spending
 
                                       55
<PAGE>
increases  beyond  its projections  during its  1993  fiscal year  or subsequent
years, such developments could  result in reductions in  projected State aid  to
the  City. In addition, there  can be no assurance  that State budgets in future
fiscal years will be adopted  by the April 1  statutory deadline and that  there
will  not  be  adverse effects  on  the  City's cash  flow  and  additional City
expenditures as a result of such delays.
 
    The City projections set  forth in its financial  plan are based on  various
assumptions and contingencies which are uncertain and which may not materialize.
Changes  in major assumptions  could significantly affect  the City's ability to
balance its budget as required by State law and to meet its annual cash flow and
financing requirements. Such assumptions and contingencies include the timing of
any regional  and local  economic recovery,  the absence  of wage  increases  in
excess  of  the  increases assumed  in  its financial  plan,  employment growth,
provision of  State  and  Federal  aid and  mandate  relief,  State  legislative
approval  of future  State budgets, levels  of education expenditures  as may be
required by State  law, adoption of  future City  budgets by the  New York  City
Council,  and  approval  by  the  Governor  or  the  State  Legislature  and the
cooperation of  MAC with  respect  to various  other  actions proposed  in  such
financial plan.
 
    The  City's ability to maintain a  balanced operating budget is dependant on
whether it  can implement  necessary service  and personnel  reduction  programs
successfully.  As discussed above, the City must identify additional expenditure
reductions and revenue sources to achieve balanced operating budgets for  fiscal
years  1994 and  thereafter. Any  such proposed  expenditure reductions  will be
difficult to implement  because of  their size and  the substantial  expenditure
reductions already imposed on City operations in the past two years.
 
    Attaining  a balanced  budget is also  dependent upon the  City's ability to
market its  securities successfully  in the  public credit  markets. The  City's
financing  program  for  fiscal  years 1994  through  1997  contemplates capital
spending of $16.2  billion, which  will be  financed through  issuance of  $10.5
billion  of general  obligation bonds, $4.3  billion of  Water Authority Revenue
Bonds and the balance by Covered Organization obligations, and will be  utilized
primarily to reconstruct and rehabilitate the City's infrastructure and physical
assets  and  to make  capital investments.  A significant  portion of  such bond
financing is used to reimburse the City's general fund for capital  expenditures
already  incurred. In  addition, the  City issues  revenue and  tax anticipation
notes to  finance  its seasonal  working  capital requirements.  The  terms  and
success  of projected  public sales of  City general obligation  bonds and notes
will be subject to prevailing market conditions at the time of the sale, and  no
assurance can be given that the credit markets will absorb the projected amounts
of  public bond and note sales.  In addition, future developments concerning the
City and public  discussion of  such developments, the  City's future  financial
needs  and  other issues  may  affect the  market  for outstanding  City general
obligation bonds  and  notes.  If the  City  were  unable to  sell  its  general
obligation  bonds  and notes,  it would  be prevented  from meeting  its planned
operating and capital expenditures.
 
    FISCAL YEARS 1990,  1991 AND  1992.   The City  achieved balanced  operating
results as reported in accordance with GAAP for the 1992 fiscal year. During the
1990  and 1991 fiscal  years, the City  implemented various actions  to offset a
projected budget  deficit  of $3.2  billion  for  the 1991  fiscal  year,  which
resulted  from declines in City revenue  sources and increased public assistance
needs due to the recession. Such actions included $822 million of tax  increases
and substantial expenditure reductions.
 
    The City is a defendant in a significant number of lawsuits. Such litigation
includes,  but is not limited to,  actions commenced and claims asserted against
the City arising out  of alleged constitutional  violations, torts, breaches  of
contracts,  and other violations of law  and condemnation proceedings. While the
ultimate outcome and fiscal impact, if any, on the
 
                                       56
<PAGE>
proceedings and claims are not currently predictable, adverse determinations  in
certain  of them might have a material adverse effect upon the City's ability to
carry out its financial  plan. As of  June 30, 1992, legal  claims in excess  of
$341  billion were outstanding against the City for which the City estimated its
potential future liability to be $2.3 billion.
 
    RATINGS.  As of the  date of this prospectus,  Moody's rating of the  City's
general obligation bonds stood at Baa1 and S&P's rating stood at A-. On February
11, 1991, Moody's had lowered its rating from A.
 
    On December 6, 1993, in confirming its Baa1 rating, Moody's noted that:
 
        The  fiscal 1994 budget is nominally  balanced, in part through reliance
    on one-shot revenues, but contains a number  of risks . . . [The  financial
    plan . . . shows increased gaps in succeeding years.
 
        The financial plan for fiscal 1995 and beyond shows an ongoing imbalance
    between  the City's expenditures and  revenues . . . A  key risk is that the
    replacement of one-shot revenues is likely to become increasingly  difficult
    over  time.  Moody's continues  to expect  that  the City's  progress toward
    achieving long-term balance will be slow and uneven, but that the City  will
    be diligent and prudent in closing gaps as they arise.
 
    As  discussed above under FISCAL YEAR  1993 AND 1993-1996 FINANCIAL PLAN, on
July 2, 1993  after a  review of  the City's budget  for fiscal  year 1994,  its
proposed  budget  for  fiscal year  1995  and  certain additional  cuts  in both
proposed by the Mayor and the City Comptroller, S&P confirmed its A- rating with
a negative  outlook of  the  City's general  obligation  bonds but  indicated  a
continuing  concern about  budgets for  fiscal year  1995 and  thereafter. S&P's
rating of the City's general obligation bonds remains unchanged.
 
    On October 12, 1993, Moody's increased its rating of the City's issuance  of
$650  million of Tax Anticipation  Notes ("TANs") to MIG-1  from MIG-2. Prior to
that date, on May  9, 1990, Moody's revised  downward its rating on  outstanding
City  revenue anticipation notes from MIG-1 to  MIG-2 and rated the $900 million
Notes then  being  sold MIG-2.  S&P's  rating of  the  October 1993  TANS  issue
increased  to SP-1 from SP-2. Prior to that date, on April 29, 1991, S&P revised
downward its rating on City revenue anticipation notes from SP-1 to SP-2.
 
    As of June 30, 1993, the City  and MAC had, respectively, $19.6 billion  and
$4.5 billion of outstanding net long-term indebtedness.
 
    (3) THE STATE AGENCIES: Certain Agencies of the State have faced substantial
financial difficulties which could adversely affect the ability of such Agencies
to  make payments  of interest  on, and  principal amounts  of, their respective
bonds. The  difficulties  have in  certain  instances caused  the  State  (under
so-called   "moral  obligation"  provisions   which  are  non-binding  statutory
provisions for State  appropriations to  maintain various  debt service  reserve
funds)  to appropriate funds on behalf of the Agencies. Moreover, it is expected
that the  problems  faced by  these  Agencies  will continue  and  will  require
increasing  amounts of State assistance in future years. Failure of the State to
appropriate necessary amounts or to take  other action to permit those  Agencies
having  financial  difficulties  to meet  their  obligations could  result  in a
default by one or more of the Agencies. Such default, if it were to occur, would
be likely to have  a significant adverse effect  on investor confidence in,  and
therefore  the  market  price of,  obligations  of the  defaulting  Agencies. In
addition, any default in payment on  any general obligation of any Agency  whose
bonds contain a moral obligation provision could constitute a failure of certain
conditions  that must be satisfied in connection with Federal guarantees of City
and MAC obligations  and could  thus jeopardize the  City's long-term  financing
plans.
 
                                       57
<PAGE>
    As  of  September 30,  1993,  the State  reported  that there  were eighteen
Agencies that each had outstanding debt of $100 million or more. These  eighteen
Agencies  had  an  aggregate of  $63.5  billion of  outstanding  debt, including
refunding bonds, of which  $7.7 billion was moral  obligation debt of the  State
and  $19.3 billion was  financed under lease-purchase  or contractual obligation
financing arrangements.
 
    (4) STATE LITIGATION: The State is a defendant in numerous legal proceedings
pertaining to  matters incidental  to the  performance of  routine  governmental
operations.  Such litigation  includes, but is  not limited  to, claims asserted
against the State  arising from  alleged torts, alleged  breaches of  contracts,
condemnation proceedings and other alleged violations of State and Federal laws.
Included in the State's outstanding litigation are a number of cases challenging
the  constitutionality  or  the  adequacy  and  effectiveness  of  a  variety of
significant social  welfare  programs  primarily involving  the  State's  mental
hygiene  programs. Adverse judgments in these  matters generally could result in
injunctive relief coupled with prospective  changes in patient care which  could
require substantial increased financing of the litigated programs in the future.
 
    The  State  is  also engaged  in  a  variety of  claims  wherein significant
monetary damages are sought. Actions  commenced by several Indian nations  claim
that  significant amounts of land were unconstitutionally taken from the Indians
in violation  of  various treaties  and  agreements during  the  eighteenth  and
nineteenth  centuries. The claimants seek  recovery of approximately six million
acres of land as well as compensatory and punitive damages.
 
    The U.S. Supreme Court on March 30,  1993, referred to a Special Master  for
determination  of damages an action by the  State of Delaware to recover certain
unclaimed dividends,  interest  and  other  distributions  made  by  issuers  of
securities  held by New  York based-brokers incorporated  in Delaware. (STATE OF
DELAWARE V. STATE  OF NEW  YORK.) The State  had taken  such unclaimed  property
under  its ABANDONED  PROPERTY LAW.  New York and  Delaware have  entered into a
settlement agreement which provides for a payment of $35 million in fiscal  year
1993-94  and thereafter five $33 million annual payments. Claims of other states
and the District of Columbia  have not been settled  and the State expects  that
additional  payments, which  may be  significant, may  be required  with respect
thereto during fiscal year 1994 and thereafter.
 
    In SCHULZ V.  STATE OF  NEW YORK, commenced  May 24,  1993 ("SCHULZ  1993"),
petitioners have challenged the constitutionality of mass transportation bonding
programs   of  the  New  York  State  Thruway  Authority  and  the  Metropolitan
Transportation Authority. On  May 24,  1993, the Supreme  Court, Albany  County,
temporarily  enjoined  the State  from implementing  those bonding  programs. In
previous actions  Mr.  Schulz and  others  have challenged  on  similar  grounds
bonding  programs for the  New York State Urban  Development Corporation and the
New York  Local Government  Assistance  Corporation. While  there have  been  no
decisions  on the merits in  such previous actions, by  an opinion dated May 11,
1993, the New York Court of Appeals held in a proceeding commenced on April  29,
1991  in the Supreme  Court, Albany County  (SCHULZ V. STATE  OF NEW YORK), that
petitioners had standing as  voters under the State  Constitution to bring  such
action.
 
    Petitioners  in SCHULZ 1993 have asserted that  issuance of bonds by the two
Authorities is subject to  approval by statewide  referendum. By decision  dated
October  21, 1993, the Appellate Division,  Third Department, affirmed the order
of the Supreme  Court, Albany County,  granting the State's  motion for  summary
judgment, dismissing the complaint and vacating the temporary restraining order.
In December 1993, the New York Court of Appeals indicated that it would hear the
plaintiffs'  appeal of the Appellate Division's decision in SCHULZ 1993. At this
time there can be no forecast of the likelihood of success on the merits by  the
petitioners,  but  a  decision  upholding  this  constitutional  challenge could
restrict and limit the ability of the State and its instrumentalities to  borrow
funds in the future.
 
                                       58
<PAGE>
    Adverse  developments in the foregoing  proceedings or new proceedings could
adversely affect the financial condition of the State in the future.
 
    (5) OTHER MUNICIPALITIES: Certain  localities in addition  to New York  City
could   have  financial  problems  leading  to  requests  for  additional  State
assistance. The potential impact on the  State of such actions by localities  is
not  included in projections  of State receipts and  expenditures in the State's
1993-94 and 1994-95 fiscal years.
 
    Fiscal difficulties experienced by the City of Yonkers ("Yonkers")  resulted
in  the creation  of the Financial  Control Board  for the City  of Yonkers (the
"Yonkers Board")  by  the State  in  1984. The  Yonkers  Board is  charged  with
oversight of the fiscal affairs of Yonkers. Future actions taken by the Governor
or  the State Legislature to assist Yonkers  could result in allocation of State
resources in amounts that cannot yet be determined.
 
    Municipalities and school districts  have engaged in substantial  short-term
and  long-term borrowings. In 1991, the  total indebtedness of all localities in
the State was approximately  $31.6 billion, of which  $16.8 billion was debt  of
New  York City  (excluding $6.7  billion in  MAC debt).  State law  requires the
Comptroller to review and make  recommendations concerning the budgets of  those
local government units other than New York City authorized by State law to issue
debt  to  finance deficits  during  the period  that  such deficit  financing is
outstanding. Fifteen localities had outstanding indebtedness for state financing
at the close of their  fiscal year ending in 1991.  In 1992, an unusually  large
number of local government units requested authorization for deficit financings.
According to the Comptroller, ten local government units have been authorized to
issue deficit financing in the aggregate amount of $131.1 million.
 
    Certain  proposed Federal  expenditure reductions  could reduce,  or in some
cases eliminate, Federal funding  of some local  programs and accordingly  might
impose substantial increased expenditure requirements on affected localities. If
the State, New York City or any of the Agencies were to suffer serious financial
difficulties  jeopardizing their respective access to the public credit markets,
the marketability of  notes and  bonds issued  by localities  within the  State,
including  notes or  bonds in  the New  York Insured  Trust, could  be adversely
affected. Localities also face anticipated and potential problems resulting from
certain pending litigation, judicial decisions, and long-range economic  trends.
The  longer-range potential  problems of declining  urban population, increasing
expenditures, and other  economic trends could  adversely affect localities  and
require increasing State assistance in the future.
 
    (6)  OTHER ISSUERS OF NEW YORK MUNICIPAL  OBLIGATIONS. There are a number of
other agencies, instrumentalities and political  subdivisions of the State  that
issue  Municipal Obligations, some  of which may  be conduit revenue obligations
payable from  payments from  private borrowers.  These entities  are subject  to
various  economic  risks  and  uncertainties,  and  the  credit  quality  of the
securities issued  by them  may vary  considerably from  the credit  quality  of
obligations backed by the full faith and credit of the State.
 
                                       59
<PAGE>
NEW YORK TAXABLE ESTIMATED CURRENT RETURN TABLE
 
    The  following tables show the approximate taxable estimated current returns
for individuals  that are  equivalent to  tax-exempt estimated  current  returns
under  combined Federal,  state and local  taxes, using  published 1994 marginal
Federal tax rates and marginal state and local tax rates currently available and
scheduled to  be in  effect.  The tables  incorporate  increased tax  rates  for
higher-income  taxpayers that were included in the Revenue Reconciliation Act of
1993. For cases  in which  two state  or local  brackets fall  within a  federal
bracket, the higher state or local bracket is combined with the federal bracket.
The  combined local, state and Federal tax  brackets shown reflect the fact that
state and local tax payments are currently deductible for Federal tax  purposes.
The  tables illustrate  what you  would have to  earn on  taxable investments to
equal the tax-exempt  estimated current return  for your income  tax bracket.  A
taxpayer's  marginal tax  rate is  affected by both  his taxable  income and his
adjusted gross income. Locate your adjusted gross and your taxable income (which
is your adjusted gross  income reduced by any  deductions and exemptions),  then
locate  your tax bracket based on joint or single tax filing. Read across to the
equivalent taxable estimated current return you would need to match the tax-free
income.
 
I.  COMBINED FEDERAL AND NEW YORK STATE INCOME TAXES
 
 COMBINED MARGINAL TAX RATES FOR JOINT TAXPAYERS WITH FOUR PERSONAL EXEMPTIONS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross       State and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.50%   4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 38.0 $     0-100.0     21.5    %     5.73    6.05    6.37    6.69    7.01    7.32    7.64    7.96
                 100.0-111.8     22.5          5.81    6.13    6.45    6.77    7.10    7.42    7.74    8.06
    38.0- 91.9       0-100.0     33.5          6.77    7.14    7.52    7.89    8.27    8.65    9.02    9.40
                 100.0-111.8     34.5          6.87    7.25    7.63    8.02    8.40    8.78    9.16    9.54
                 111.8-150.0     35.0          6.92    7.31    7.69    8.08    8.46    8.85    9.23    9.62
                 150.0-167.7     34.0          6.82    7.20    7.58    7.95    8.33    8.71    9.09    9.47
    91.9-140.0       0-100.0     36.0          7.03    7.42    7.81    8.20    8.59    8.98    9.38    9.77
                 100.0-111.8     37.0          7.14    7.54    7.94    8.33    8.73    9.13    9.52    9.92
                 111.8-150.0     38.0          7.26    7.66    8.06    8.47    8.87    9.27    9.68   10.08
                 150.0-167.7     37.0          7.14    7.54    7.94    8.33    8.73    9.13    9.52    9.92
                 167.7-290.2     39.5          7.44    7.85    8.26    8.68    9.09    9.50    9.92   10.33
   140.0-250.0   111.8-150.0     42.5          7.83    8.26    8.70    9.13    9.57   10.00   10.43   10.87
                 150.0-167.7     42.0          7.76    8.19    8.62    9.05    9.48    9.91   10.34   10.78
                 167.7-290.2     44.5          8.11    8.56    9.01    9.46    9.91   10.36   10.81   11.26
                  Over 290.2     42.0    2     7.76    8.19    8.62    9.05    9.48    9.91   10.34   10.78
    Over 250.0   167.7-290.2     48.0          8.65    9.13    9.62   10.10   10.58   11.06   11.54   12.02
                  Over 290.2     45.5    3     8.26    8.72    9.17    9.63   10.09   10.55   11.01   11.47
</TABLE>
 
  COMBINED MARGINAL TAX RATES FOR SINGLE TAXPAYERS WITH ONE PERSONAL EXEMPTION
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross       State and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.50%   4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 22.8 $     0-100.0     21.5    %     5.73    6.05    6.37    6.69    7.01    7.32    7.64    7.96
                 100.0-111.8     22.0          5.77    6.09    6.41    6.73    7.05    7.37    7.69    8.01
    22.8- 55.1       0-100.0     33.5          6.77    7.14    7.52    7.89    8.27    8.65    9.02    9.40
                 100.0-111.8     34.0          6.82    7.20    7.58    7.95    8.33    8.71    9.09    9.47
    55.1-115.0       0-100.0     36.0          7.03    7.42    7.81    8.20    8.59    8.98    9.38    9.77
                 100.0-111.8     36.5          7.09    7.48    7.87    8.27    8.66    9.06    9.45    9.84
                 111.8-150.0     38.0          7.26    7.66    8.06    8.47    8.87    9.27    9.68   10.08
                 150.0-234.3     37.5          7.20    7.60    8.00    8.40    8.80    9.20    9.60   10.00
   115.0-250.0   111.8-150.0     43.0          7.89    8.33    8.77    9.21    9.65   10.09   10.53   10.96
                 150.0-234.3     42.5          7.83    8.26    8.70    9.13    9.57   10.00   10.43   10.87
                  Over 234.3     42.0    2     7.76    8.19    8.62    9.05    9.48    9.91   10.34   10.78
    Over 250.0    Over 234.3     45.5    3     8.26    8.72    9.17    9.63   10.09   10.55   11.01   11.47
</TABLE>
 
                                       60
<PAGE>
II. COMBINED FEDERAL, NEW YORK STATE AND NEW YORK CITY INCOME TAXES
 
 COMBINED MARGINAL TAX RATES FOR JOINT TAXPAYERS WITH FOUR PERSONAL EXEMPTIONS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal      Combined
    Federal      Adjusted       State,
    Taxable        Gross         Local                     Tax-Exempt Estimated Current Return
    Income        Income      and Federal     --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.50%   4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 38.0 $     0-100.0     25.0    %     6.00    6.33    6.67    7.00    7.33    7.67    8.00    8.33
                 100.0-111.8     26.0          6.08    6.42    6.76    7.09    7.43    7.77    8.11    8.45
    38.0- 91.9       0-100.0     36.5          7.09    7.48    7.87    8.27    8.66    9.06    9.45    9.84
                 100.0-111.8     37.5          7.20    7.60    8.00    8.40    8.80    9.20    9.60   10.00
                 111.8-150.0     38.0          7.26    7.66    8.06    8.47    8.87    9.27    9.68   10.08
                 150.0-167.7     37.5          7.20    7.60    8.00    8.40    8.80    9.20    9.60   10.00
    91.9-140.0       0-100.0     39.5          7.44    7.85    8.26    8.68    9.09    9.50    9.92   10.33
                 100.0-111.8     40.0          7.50    7.92    8.33    8.75    9.17    9.58   10.00   10.42
                 111.8-150.0     41.0          7.63    8.05    8.47    8.90    9.32    9.75   10.17   10.59
                 150.0-167.7     40.0          7.50    7.92    8.33    8.75    9.17    9.58   10.00   10.42
                 167.7-290.2     42.5          7.83    8.26    8.70    9.13    9.57   10.00   10.43   10.87
   140.0-250.0   111.8-150.0     45.5          8.26    8.72    9.17    9.63   10.09   10.55   11.01   11.47
                 150.0-167.7     44.5          8.11    8.56    9.01    9.46    9.91   10.36   10.81   11.26
                 167.7-290.2     47.0          8.49    8.96    9.43    9.91   10.38   10.85   11.32   11.79
                  Over 290.2     44.5    2     8.11    8.56    9.01    9.46    9.91   10.36   10.81   11.26
    Over 250.0   167.7-290.2     50.5          9.09    9.60   10.10   10.61   11.11   11.62   12.12   12.63
                  Over 290.2     48.0    3     8.65    9.13    9.62   10.10   10.58   11.06   11.54   12.02
</TABLE>
 
  COMBINED MARGINAL TAX RATES FOR SINGLE TAXPAYERS WITH ONE PERSONAL EXEMPTION
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal      Combined
    Federal      Adjusted       State,
    Taxable        Gross         Local                     Tax-Exempt Estimated Current Return
    Income        Income      and Federal     --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.50%   4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 22.8 $     0-100.0     25.0    %     6.00    6.33    6.67    7.00    7.33    7.67    8.00    8.33
                 100.0-111.8     25.5          6.04    6.38    6.71    7.05    7.38    7.72    8.05    8.39
    22.8- 55.1       0-100.0     36.5          7.09    7.48    7.87    8.27    8.66    9.06    9.45    9.84
                 100.0-111.8     37.0          7.14    7.54    7.94    8.33    8.73    9.13    9.52    9.92
    55.1-115.0       0-100.0     39.5          7.44    7.85    8.26    8.68    9.09    9.50    9.92   10.33
                 100.0-111.8     39.5          7.44    7.85    8.26    8.68    9.09    9.50    9.92   10.33
                 111.8-150.0     41.0          7.63    8.05    8.47    8.90    9.32    9.75   10.17   10.59
                 150.0-234.3     40.5          7.56    7.98    8.40    8.82    9.24    9.66   10.08   10.50
   115.0-250.0   111.8-150.0     45.5          8.26    8.72    9.17    9.63   10.09   10.55   11.01   11.47
                 150.0-234.3     45.5          8.26    8.72    9.17    9.63   10.09   10.55   11.01   11.47
                  Over 234.3     44.5    2     8.11    8.56    9.01    9.46    9.91   10.36   10.81   11.26
    Over 250.0    Over 234.3     48.0    3     8.65    9.13    9.62   10.10   10.58   11.06   11.54   12.02
</TABLE>
 
<TABLE>
<S>         <C>
<FN>
- ------------------
      1 The table reflects the effect of the limitations  on itemized deductions and the deduction for personal exemptions.  They
were  designed to phase out certain benefits of these deductions for higher income taxpayers. These limitations, in effect, raise
the marginal Federal tax rate  to approximately 44.0 percent for  taxpayers filing a joint return  and entitled to four  personal
exemptions  and to approximately 41.0 percent for taxpayers filing a single return entitled to only one personal exemption. These
limitations are subject  to certain  maximums, which depend  on the  number of  exemptions claimed and  the total  amount of  the
taxpayer's  itemized deductions. For example, the limitation  on itemized deductions will not cause  a taxpayer to lose more than
80% of his allowable itemized deductions, with certain exceptions. The table also reflects the New York State supplemental income
tax based upon a taxpayer's New York State taxable income and New York State adjusted gross income. This supplemental tax results
in an increased marginal state  income tax rate to the  extent a taxpayer's New York  State adjusted gross income ranges  between
$100,000  and $150,000. The table  does not, however, reflect  the amendments to the  New York State income  tax law that imposes
limitations on the deductibility of itemized deductions. The application of the New York State limitation on itemized  deductions
may result in a higher combined Federal, State and local tax rate than indicated in the table. The table assumes for this purpose
that a taxpayer's New York State adjusted income equals his Federal adjusted gross income.
      2 Federal tax rate reverts to 36.0% after the 80% cap on the limitation on itemized deductions has been met.
      3 Federal tax rate reverts to 39.6% after the 80% cap on the limitation on itemized deductions has been met.
</TABLE>
 
                                       61
<PAGE>
    A  comparison of tax-free  and equivalent taxable  estimated current returns
with the returns on  various taxable investments is  one element to consider  in
making  an  investment  decision. The  Sponsor  may  from time  to  time  in its
advertising and sales materials  compare the then  current estimated returns  on
the Trust and returns over specified periods on other similar Nuveen Trusts with
returns  on taxable investments such as corporate or U.S. Government bonds, bank
CD's and  money  market  accounts or  money  market  funds, each  of  which  has
investment  characteristics  that  may  differ from  those  of  the  Trust. U.S.
Government bonds, for example, are  backed by the full  faith and credit of  the
U.S. Government and bank CD's and money market accounts are insured by an agency
of  the federal government. Money market accounts and money market funds provide
stability of principal, but pay interest  at rates that vary with the  condition
of  the short-term debt market. The  investment characteristics of the Trust are
described more fully elsewhere in this Prospectus.
 
                                       62
<PAGE>
   
Nuveen Tax-Exempt Unit Trust
Schedule of Investments at Date of Deposit
April 13, 1994
NEW YORK INSURED TRUST 215
(Series 724)
    
 
<TABLE>
<CAPTION>
                                                                                          Ratings(3)           Trustee's
                                                                      Optional       ---------------------   Determination
 Aggregate        Name of Issuer and Title of Issue Represented      Redemption       Standard                of Offering
  Principal        by Sponsor's Contracts to Purchase Bonds(1)      Provisions(2)     & Poor's    Moody's      Price(4)
<C>          <C> <S>                                              <C>                <C>         <C>        <C>
- ---------------------------------------------------------------------------------------------------------------------------
$   500,000      Dormitory Authority of the State of New York,    No Optional Call      AAA         Aaa     $       488,125
                   State University Educational Facilities
                   Revenue Bonds, Series 1993A, 5.875% Due
                   5/15/11.
    500,000      Dormitory Authority of the State of New York,       2004 at 102        AAA         Aaa             470,395
                   Revenue Bonds, Upstate Community Colleges,
                   Series 1994A, 5.70% Due 7/1/21.
    165,000      New York Local Government Assistance                2003 at 102        AAA         Aaa             151,640
                   Corporation (A Public Benefit Corporation of
                   the State of New York), Series 1993C
                   Refunding Bonds, 5.50% Due 4/1/18.
    335,000      New York Local Government Assistance              2004 at 101 1/2      AAA         Aaa             305,708
                   Corporation (A Public Benefit Corporation of
                   the State of New York), Series 1994A Bonds,
                   5.50% Due 4/1/23.
    500,000      New York State Medical Care Facilities Finance      2004 at 102        AAA         Aaa             436,115
                   Agency, Mental Health Services Facilities
                   Improvement Revenue Bonds, 1994 Series A,
                   5.25% Due 8/15/23. (Original issue discount
                   bonds delivered on or about February 24, 1994
                   at a price of 92.804% of principal
                   amount.)(General Obligation Bonds.)
    500,000      The City of New York (New York), General          2002 at 101 1/2      AAA         Aaa             537,345
                   Obligation Bonds, Fiscal 1993 Series B, 7.00%
                   Due 10/1/09.
    500,000      Metropolitan Transportation Authority (New        2003 at 101 1/2      AAA         Aaa             476,420
                   York), Transit Facilities Service Contract
                   Bonds, Series P, 5.75% Due 7/1/15.
    500,000      New York City (New York), Municipal Water           2004 at 101        AAA         Aaa             458,610
                   Finance Authority, Water and Sewer System
                   Revenue Bonds, Fixed Rate Fiscal 1994 Series
                   B, 5.50% Due 6/15/19.
- -----------                                                                                                 ---------------
$ 3,500,000                                                                                                 $     3,324,358
- -----------                                                                                                 ---------------
- -----------                                                                                                 ---------------
</TABLE>
 
See Notes to Schedules of Investments, page 81.
 
                                       63
<PAGE>
   
OHIO INSURED TRUST 113
    
 
   
    The  Portfolio of Ohio Insured Trust 113 consists of 6 obligations issued by
entities located in Ohio and one obligation  issued by an entity located in  the
Territory  of Puerto Rico. Two Bonds in the Trust are general obligations of the
governmental entities issuing them and are backed by the taxing powers  thereof.
Five Bonds in the Trust are payable as to principal and interest from the income
of  a specific project or authority and  are not supported by the issuer's power
to levy taxes. The sources  of payment for these  bonds are divided as  follows:
Electrical  System Revenue,  1; Health  Care Facility  Revenue, 3;  Water and/or
Sewer Revenue, 1. All of  the Bonds in the Trust,  as insured, are rated AAA  by
Standard & Poor's Corporation and Aaa by Moody's Investors Service, Inc.
    
 
   
    At  the  Date of  Deposit, the  average maturity  of the  Bonds in  the Ohio
Insured Trust is 24.1  years. The average  maturity of the Bonds  in a Trust  is
calculated based upon the stated maturities of the Bonds in such Trust (or, with
respect  to Bonds for  which funds or  securities have been  placed in escrow to
redeem such Bonds on a stated call date, based upon such call date). The average
maturity of the Bonds in a Trust may  increase or decrease from time to time  as
Bonds mature or are called or sold.
    
 
   
    Approximately  28.6% of the  aggregate principal amount of  the Bonds in the
Trust (accounting for approximately 26.8% of the aggregate offering price of the
Bonds)   are    original   issue    discount   bonds.    See   "GENERAL    TRUST
INFORMATION--ORIGINAL  ISSUE  DISCOUNT  BONDS AND  STRIPPED  OBLIGATIONS"  for a
discussion of the  characteristics of  such bonds  and of  the risks  associated
therewith.
    
 
    Approximately  43% of  the aggregate  principal amount  of the  Bonds in the
Trust consists of obligations  of issuers whose  revenues are primarily  derived
from services provided by hospitals or other health care facilities.
 
    For  a discussion of the  risks associated with investments  in the bonds of
various issuers, see "General Trust Information" in this section.
 
   
    The Sponsor entered into  contracts to acquire the  Bonds between March  29,
1994  and April 12, 1994. The following summarizes certain information about the
Bonds as of the business day prior to the Date of Deposit:
    
 
<TABLE>
<CAPTION>
                                                                  Difference between Trustee's
                                                               Determination of Offering Price and
   Cost to    Profit (or loss)   Annual Interest   Bid Price              the Bid Price
   Sponsor       to Sponsor      Income to Trust    of Bonds       (as % of principal amount)
  ----------  -----------------  ----------------  ----------  -----------------------------------
  <S>         <C>                <C>               <C>         <C>
  $3,270,949       $9,856            $199,375      $3,263,930                 .48%
</TABLE>
 
    Neither  cost  to  Sponsor  nor   profit  (or  loss)  to  Sponsor   reflects
underwriting  profits or losses received or  incurred by the Sponsor through its
participation  in  underwriting  syndicates.  An  underwriter  or   underwriting
syndicate  purchases bonds  from the issuer  on a negotiated  or competitive bid
basis as principal with  the motive of  marketing such bonds  to investors at  a
profit.  The Sponsor did not participate as  either the sole underwriter or as a
manager or member of a syndicate that  acted as the original underwriter of  any
of the Bonds.
 
   
    Unitholders  may elect  to have  interest distributions  made on  a monthly,
quarterly or semi-annual basis. The interest on the Bonds initially deposited in
the Ohio Insured Trust, less estimated  expenses, is estimated to accrue at  the
rate  of $.01536 per  Unit per day  under the semi-annual  plan of distribution,
$.01531 per Unit per  day under the quarterly  plan of distribution and  $.01522
per  Unit per day under the monthly plan of distribution. It is anticipated that
the amount  of interest  to be  distributed per  Unit in  each year  under  each
    
 
                                       64
<PAGE>
plan  of distribution will initially be substantially equal to the Estimated Net
Annual Interest Income per Unit for that plan.
 
    Details of interest distributions per Unit  of the Ohio Insured Trust  under
the  various plans appear in the following table based upon estimated Net Annual
Interest Income at the Date of Deposit:
 
<TABLE>
<CAPTION>
                                                                                                          Normal
                                                                                                      Distributions
Ohio Insured Trust                                       1994                          1995              per Year
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        5/1            8/1           11/1            2/1
Distribution Date.....................       5/15           8/15          11/15           2/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .2739(1)                                                  $  5.4811
                                                          --------  $.4566 every month  --------
Quarterly Distribution Plan...........  $   .2739(1)   $  1.3779(2)   $  1.3779      $  1.3779        $  5.5131
Semi-Annual Distribution Plan.........  $   .2739(1)                  $  2.7648(3)                    $  5.5321
- --------------------------------------------------------------------------------------------------------------------
<FN>
 * Record Dates for semi-annual distributions are May 1 and November 1; for quarterly distributions, they are February 1, May  1,
   August 1 and November 1. Record Dates for monthly distributions are the first day of each month.
(1)  The first distribution will be paid to all Unitholders,  regardless of the distribution plan selected. Such distribution may
    be more or less than a regular monthly distribution.
(2) Regular 3-month distribution.
(3) Regular 6-month distribution.
</TABLE>
 
   
    The accrual amounts set forth above, and  in turn the amount of interest  to
be  distributed annually per Unit, will  generally change as Bonds are redeemed,
mature or are sold or as fees and expenses increase or decrease.
    
 
TAX STATUS--OHIO INSURED TRUST
 
    For a discussion of the Federal tax status of income earned on Ohio  Insured
Trust Units, see Section 11.
 
    The   Ohio  Insured   Trust  is  comprised   primarily  of  interest-bearing
obligations issued by or on behalf of the State of Ohio, political  subdivisions
thereof,  or agencies or instrumentalities  thereof (the "Ohio Obligations"), or
by the governments  of Puerto  Rico, the  Virgin Islands,  the Northern  Mariana
Islands or Guam (collectively, "Obligations").
 
    In  the opinion of  Squire, Sanders &  Dempsey, special Ohio  counsel to the
Series, provided that at all  times at least fifty percent  of the value of  the
total  assets of the Ohio Insured Trust  consist of Ohio Obligations, or similar
obligations of other states or their subdivisions, under existing Ohio law:
 
        The Ohio Insured Trust is not taxable as a corporation or otherwise  for
    purposes of the Ohio personal income tax, Ohio school district income taxes,
    the Ohio corporation franchise tax, or the Ohio dealers in intangibles tax.
 
        Income  of the Ohio Insured  Trust will be treated  as the income of the
    Unitholders for  purposes  of the  Ohio  personal income  tax,  Ohio  school
    district  income taxes, Ohio municipal income taxes and the Ohio corporation
    franchise tax  in proportion  to  the respective  interest therein  of  each
    Unitholder.
 
        Interest  on Obligations held  by the Ohio Insured  Trust is exempt from
    the Ohio personal income  tax, Ohio municipal income  taxes and Ohio  school
    district  income taxes and is excluded from  the net income base of the Ohio
    corporation  franchise  tax  when  distributed  or  deemed  distributed   to
    Unitholders.
 
        Proceeds  paid under insurance  policies, if any, to  the Trustee of the
    Ohio Insured Trust, representing maturing interest on defaulted  obligations
    held by the Ohio Trust
 
                                       65
<PAGE>
    will  be  exempt from  the Ohio  personal income  tax, Ohio  school district
    income taxes, Ohio  municipal income taxes  and the net  income base of  the
    Ohio  corporation franchise tax if, and to the same extent as, such interest
    would be exempt  from such  taxes if  paid directly  by the  issuer of  such
    obligations.
 
        Gains  and losses realized on the sale, exchange or other disposition by
    the Ohio  Insured Trust  of  Ohio Obligations  are excluded  in  determining
    adjusted  gross and taxable income for  purposes of the Ohio personal income
    tax, Ohio municipal income taxes and  Ohio school district income taxes  and
    are  excluded from the net income base of the Ohio corporation franchise tax
    when distributed or deemed distributed to Unitholders.
 
ECONOMIC FACTORS--OHIO
 
    As described  above, the  Trust will  invest substantially  all of  its  net
assets  in  securities  issued  by  or  on  behalf  of  (or  in  certificates of
participation in lease  purchase obligations  of) the State  of Ohio,  political
subdivisions  of the State, or agencies or instrumentalities of the State or its
political subdivisions (Ohio Obligations). The Trust is therefore susceptible to
general or particular political, economic or regulatory factors that may  affect
issuers  of Ohio Obligations. The following information constitutes only a brief
summary of  some of  the  many complex  factors that  may  have an  effect.  The
information  does not apply to "conduit"  obligations on which the public issuer
itself has  no  financial  responsibility.  This  information  is  derived  from
official  statements of certain Ohio issuers  published in connection with their
issuance of  securities and  from  other publicly  available documents,  and  is
believed to be accurate. No independent verification has been made of any of the
following information.
 
    The  creditworthiness  of Ohio  Obligations  of local  issuers  is generally
unrelated to that  of obligations  of the  State itself,  and the  State has  no
responsibility  to  make  payments  on those  local  obligations.  There  may be
specific factors that at particular times apply in connection with investment in
particular Ohio Obligations or in those obligations of particular Ohio  issuers.
It  is possible that the investment may be in particular Ohio Obligations, or in
those of  particular issuers,  as to  which those  factors apply.  However,  the
information  below is intended only as a general summary, and is not intended as
a discussion of any specific factors  that may affect any particular  obligation
or issuer.
 
    The timely payment of principal of and interest on Ohio Obligations has been
guaranteed  by  bond insurance  purchased  by the  issuers,  the Trust  or other
parties. The timely  payment of  debt service on  Ohio Obligations  that are  so
insured  may not be  subject to the factors  referred to in  this section of the
Prospectus.
 
    Ohio is the seventh most populous state. Its 1990 Census count of 10,847,000
indicates a 0.5% population increase from 1980.
 
    While diversifying more into the service and other non-manufacturing  areas,
the  Ohio  economy continues  to  rely in  part  on durable  goods manufacturing
largely concentrated in motor vehicles and equipment, steel, rubber products and
household appliances. As a result, general  economic activity, as in many  other
industrially-developed  states, tends  to be  more cyclical  than in  some other
states and in the nation as a whole. Agriculture is an important segment of  the
economy,  with over half  the State's area devoted  to farming and approximately
15% of total employment in agribusiness.
 
    In prior years, the State's overall unemployment rate was commonly  somewhat
higher  than the national figure. For example, the reported 1990 average monthly
State rate was  5.7%, compared the  to 5.5% national  figure. However, for  both
1991 and 1992 the State rates
 
                                       66
<PAGE>
(6.4%  and 7.2%) were below the national rates (6.7% and 7.4%). The unemployment
rate and its effects vary among particular geographic areas of the State.
 
    There can  be no  assurance  that future  national, regional  or  state-wide
economic  difficulties, and  the resulting impact  on State  or local government
finances  generally,  will  not  adversely  affect  the  market  value  of  Ohio
Obligations held in the Trust portfolio or the ability of particular obligors to
make  timely payments of debt  service on (or lease  payments relating to) those
obligations.
 
    The State operates on the basis of a fiscal biennium for its  appropriations
and  expenditures, and  is precluded by  law from ending  its July 1  to June 30
fiscal year "FY" or fiscal biennium in a deficit position. Most State operations
are financed through the General Revenue  Fund "GRF", for which personal  income
and  sales-use taxes are the  major sources. Growth and  depletion of GRF ending
fund balances show a consistent pattern related to national economic conditions,
with the ending FY  balance reduced during less  favorable and increased  during
more  favorable economic periods. The State has well-established procedures for,
and has timely taken, necessary actions to ensure resource/expenditure  balances
during  less favorable  economic periods.  These procedures  include general and
selected reductions in appropriations spending.
 
    Key biennium-ending fund balances  at June 30, 1989  were $475.1 million  in
the  GRF and $353  million in the  Budget Stabilization Fund  ("BSF", a cash and
budgetary management  fund). In  FYs 1990-91,  necessary corrective  steps  were
taken to respond to lower receipts and higher expenditures in certain categories
than   earlier   estimated.  Those   steps   included  selected   reductions  in
appropriations spending and the transfer of $64 million from the BSF to the GRF.
The State reported June  30, 1991 ending fund  balances of $135.3 million  (GRF)
and $300 million (BSF).
 
    To allow time to resolve certain Senate and House budget differences for the
latest  complete biennium that began July 1, 1991, an interim appropriations act
was enacted effective  July 1, 1991;  it included State  debt service and  lease
rental GRF appropriations for the entire 1992-93 biennium, while continuing most
other  appropriations for a month. The general appropriations act for the entire
biennium was passed on July 11, 1991 and signed by the Governor. Pursuant to it,
$200 million was transfered from the BSF to the GRF in FY 1992.
 
    Based on  the updated  FY financial  results and  economic forecast  in  the
course of FY 1992, both in light of the continuing uncertain nationwide economic
situation,  there was projected and timely addressed an FY 1992 imbalance in GRF
resources and expenditures. GRF receipts significantly below original  forecasts
resulted  primarily from lower collections  of certain taxes, particularly sales
and use taxes and personal income taxes. Higher expenditure levels resulted from
higher  spending  in  certain  areas,  particularly  human  services,  including
Medicaid.  As an  initial action,  the Governor  ordered most  State agencies to
reduce GRF  spending  in  the  last  six  months  of  FY  1992  by  a  total  of
approximately  $184 million. As  authorized by the  General Assembly, the $100.4
million BSF  balance, and  additional  amounts from  certain other  funds,  were
transferred  late in the FY to the GRF, and adjustments in the timing of certain
tax payments made.  Other administrative revenue  and spending actions  resolved
the remaining GRF imbalance.
 
    A  significant GRF shortfall (approximately $520 million) was then projected
for FY  1993. It  was addressed  by appropriate  legislative and  administrative
actions.  As a  first step  the Governor ordered,  effective July  1, 1992, $300
million in selected GRF spending reductions. Executive and legislative action in
December 1992, a combination of tax revisions and
 
                                       67
<PAGE>
additional appropriations  spending reductions,  resulted in  a balance  of  GRF
resources  and expenditures in the 1992-93  biennium. OBM has reported an ending
GRF fund cash balance at June 30, 1993 of approximately $111 million, and, as  a
first step to BSF replenishment, OBM has deposited $21 million in the BSF.
 
    No  spending  reductions  were  applied to  appropriations  needed  for debt
service or lease rentals on any State obligations.
 
    The GRF appropriations act for the  current 1994-95 biennium was passed  and
signed  by  the  Governor  on  July  1,  1993.  It  includes  all  necessary GRF
appropriations for biennial State debt service and lease rental payments.
 
    The State's incurrence or  assumption of debt without  a vote of the  people
is,   with  limited  exceptions,  prohibited  by  current  State  Constitutional
provisions. The State may  incur debt, limited in  amount to $750,000, to  cover
casual  deficits  or failures  in  revenues or  to  meet expenses  not otherwise
provided for. The Constitution expressly  precludes the State from assuming  the
debts of any local government or corporation. An exception is made in both cases
for  any debt incurred  to repel invasion, suppress  insurrection, or defend the
State in war.
 
    By 13 constitutional amendments, the last adopted in 1993, Ohio voters  have
authorized the incurrence of State debt to the payment of which taxes or excises
were  pledged. At  January 31, 1994,  $712.6 million  (excluding certain highway
bonds payable primarily from highway use  charges) of this debt was  outstanding
or  awaiting delivery.  The only  such State  debt then  still authorized  to be
incurred were portions of the highway bonds,  and the following; (a) up to  $100
million  of obligations for coal research  and development may be outstanding at
any time ($43.1 million outstanding); and (b) of $1.2 billion of obligations for
local infrastructure improvements, no more than $120 million may to be issued in
any calendar year ($645.2 million outstanding or awaiting delivery, $480 million
remaining to be issued); and (c) up to $200 million in general obligation  bonds
for  parks and recreation purposes  may be outstanding at  any one time (no more
than $50 million to be issued in any one year, and none have yet been issued).
 
    The Constitution  also  authorizes the  issuance  of State  obligations  for
certain  purposes, the owners of which do not  have the right to have excises or
taxes levied to pay debt service. Those special obligations include  obligations
issued by the Ohio Public Facilities Commission and the Ohio Building Authority,
$4.28  billion of which were outstanding or awaiting sale or delivery at January
31, 1994.
 
    A 1990  constitutional  amendment  authorizes greater  State  and  political
subdivision participation (including financing) in the provision of housing. The
General   Assembly  may  for  that  purpose  authorize  the  issuance  of  State
obligations secured by a pledge of all or such portion as it authorizes of State
revenues or  receipts, (but  not  by a  pledge of  the  State's full  faith  and
credit).
 
    State  and local  agencies issue revenue  obligations that  are payable from
revenues from  or  relating to  certain  facilities  (but not  from  taxes).  By
judicial  interpretation, these obligations are not "debt" within constitutional
provisions. In general, payment  obligations under lease-purchase agreements  of
Ohio  public agencies (in which certificates of participation may be issued) are
limited in duration to the agency's  fiscal period, and are renewable only  upon
appropriations being made available for the subsequent fiscal period.
 
    Local  school districts  in Ohio  receive a  major portion  (on a state-wide
basis,  recently  approximately  46%)  of  their  operating  moneys  from  State
subsidies, but are dependent on
 
                                       68
<PAGE>
local  property taxes, and  in 98 districts  from voter-authorized income taxes,
for significant portions of their budgets. Litigation, similar to that in  other
states,  is pending questioning the constitutionality of Ohio's system of school
funding. A small number of  the State's 612 local  school districts have in  any
year  required special assistance to avoid  year-end deficits. A current program
provides for  school  district  cash need  borrowing  directly  from  commercial
lenders,  with diversion of State subsidy  distributions to repayment if needed;
in FY 1991 under this  program, 26 districts borrowed  a total of $41.8  million
(including  over $27 million by one district), and in FY 1992 borrowings totaled
$68.6 million (including $46.6 million for one district). FY 1993 loans totalled
$94.5 million for 43 districts (including $75 million for one district). FY 1994
loan approval totalled at January 31, 1994, $9.90 million for 16 districts.
 
    Ohio's 943 incorporated cities and  villages rely primarily on property  and
municipal  income taxes for their operations, and, with other local governments,
receive local government support and  property tax relief moneys distributed  by
the  State. For those few municipalities that on occasion have faced significant
financial problems,  there  are statutory  procedures  for a  joint  State/local
commission to monitor the municipality's fiscal affairs and for development of a
financial  plan to eliminate deficits and  cure any defaults. Since inception in
1979, these procedures have been  applied to 23 cities  and villages; for 18  of
them the fiscal situation was resolved and the procedures terminated.
 
    At  present the State itself  does not levy any ad  valorem taxes on real or
tangible personal property. Those taxes are levied by political subdivisions and
other local taxing districts. The Constitution has since 1934 limited the amount
of the aggregate  levy (including  a levy  for unvoted  general obligations)  of
property  taxes by all overlapping subdivisions,  without a vote of the electors
or a municipal charter  provision, to 1%  of true value  in money, and  statutes
limit  the amount of the aggregate levy to 10 mills per $1 of assessed valuation
(commonly referred to as the  "ten-mill limitation"). Voted general  obligations
of  subdivisions are payable from property taxes that are unlimited as to amount
or rate.
 
OHIO TAXABLE ESTIMATED CURRENT RETURN TABLE
 
    The following tables show the approximate taxable estimated current  returns
for  individuals  that are  equivalent to  tax-exempt estimated  current returns
under combined Federal and  state taxes, using  published 1994 marginal  Federal
tax  rates and marginal state tax rates  currently available and scheduled to be
in  effect.  The  tables  incorporate  increased  tax  rates  for  higher-income
taxpayers  that were  included in  the Revenue  Reconciliation Act  of 1993. For
cases in which more than one state  bracket falls within a Federal bracket,  the
highest  state bracket is combined with  the Federal bracket. The combined state
and Federal tax  brackets shown  reflect the fact  that state  tax payments  are
currently  deductible for Federal  tax purposes. The  tables illustrate what you
would have to  earn on  taxable investments  to equal  the tax-exempt  estimated
current  return for your income  tax bracket. A taxpayer's  marginal tax rate is
affected by both his taxable income  and his adjusted gross income. Locate  your
adjusted  gross and  your taxable  income (which  is your  adjusted gross income
reduced by any deductions and exemptions), then locate your tax bracket based on
joint or single  tax filing.  Read across  to the  equivalent taxable  estimated
current return you would need to match the tax-free income.
 
                                       69
<PAGE>
 COMBINED MARGINAL TAX RATES FOR JOINT TAXPAYERS WITH FOUR PERSONAL EXEMPTIONS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross       State and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 38.0 $     0-111.8      19.0   %     5.86    6.17    6.48    6.79    7.10    7.41    7.72    8.02
    38.0- 91.9       0-111.8      32.5         7.04    7.41    7.78    8.15    8.52    8.89    9.26    9.63
                 111.8-167.7      33.0         7.09    7.46    7.84    8.21    8.58    8.96    9.33    9.70
    91.9-140.0       0-111.8      36.0         7.42    7.81    8.20    8.59    8.98    9.38    9.77   10.16
                 111.8-167.7      36.5         7.48    7.87    8.27    8.66    9.06    9.45    9.84   10.24
                 167.7-290.2      39.0         7.79    8.20    8.61    9.02    9.43    9.84   10.25   10.66
   140.0-250.0   111.8-167.7      42.0         8.19    8.62    9.05    9.48    9.91   10.34   10.78   11.21
                 167.7-290.2      44.5         8.56    9.01    9.46    9.91   10.36   10.81   11.26   11.71
                  Over 290.2      42.0   2     8.19    8.62    9.05    9.48    9.91   10.34   10.78   11.21
    Over 250.0   167.7-290.2      48.0         9.13    9.62   10.10   10.58   11.06   11.54   12.02   12.50
                  Over 290.2      45.0   3     8.64    9.09    9.55   10.00   10.45   10.91   11.36   11.82
</TABLE>
 
  COMBINED MARGINAL TAX RATES FOR SINGLE TAXPAYERS WITH ONE PERSONAL EXEMPTION
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross       State and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 22.8 $     0-111.8      19.0   %     5.86    6.17    6.48    6.79    7.10    7.41    7.72    8.02
    22.8- 55.1       0-111.8      31.5         6.93    7.30    7.66    8.03    8.39    8.76    9.12    9.49
    55.1-115.0       0-111.8      36.0         7.42    7.81    8.20    8.59    8.98    9.38    9.77   10.16
                 111.8-234.3      37.0         7.54    7.94    8.33    8.73    9.13    9.52    9.92   10.32
   115.0-250.0   111.8-234.3      42.5         8.26    8.70    9.13    9.57   10.00   10.43   10.87   11.30
                  Over 234.3      42.0   2     8.19    8.62    9.05    9.48    9.91   10.34   10.78   11.21
    Over 250.0    Over 234.3      45.0   3     8.64    9.09    9.55   10.00   10.45   10.91   11.36   11.82
<FN>
- ------------------
      1  The table reflects the effect of the limitations on  itemized deductions and the deduction for personal exemptions. They
were designed to phase out certain benefits of these deductions for higher income taxpayers. These limitations, in effect,  raise
the  current maximum marginal Federal tax rate to approximately 44.0  percent for taxpayers filing a joint return and entitled to
four personal exemptions and to  approximately 41.0 percent for  taxpayers filing a single return  entitled to only one  personal
exemption.  These limitations are  subject to certain maximums,  which depend on  the number of exemptions  claimed and the total
amount of the taxpayer's itemized  deductions. For example, the  limitation on itemized deductions will  not cause a taxpayer  to
lose more than 80% of his allowable itemized deductions, with certain exceptions.
      2 Federal tax rate reverts to 36.0% after the 80% cap on the limitation on itemized deductions has been met.
      3 Federal tax rate reverts to 39.6% after the 80% cap on the limitation on itemized deductions has been met.
</TABLE>
 
    A  comparison of tax-free  and equivalent taxable  estimated current returns
with the returns on  various taxable investments is  one element to consider  in
making  an  investment  decision. The  Sponsor  may  from time  to  time  in its
advertising and sales materials  compare the then  current estimated returns  on
the Trust and returns over specified periods on other similar Nuveen Trusts with
returns  on taxable investments such as corporate or U.S. Government bonds, bank
CD's and  money  market  accounts or  money  market  funds, each  of  which  has
investment  characteristics  that  may  differ from  those  of  the  Trust. U.S.
Government bonds, for example, are  backed by the full  faith and credit of  the
U.S. Government and bank CD's and money market accounts are insured by an agency
of  the federal government. Money market accounts and money market funds provide
stability of principal, but pay interest  at rates that vary with the  condition
of  the short-term debt market. The  investment characteristics of the Trust are
described more fully elsewhere in this Prospectus.
 
                                       70
<PAGE>
   
Nuveen Tax-Exempt Unit Trust
Schedule of Investments at Date of Deposit
April 13, 1994
OHIO INSURED TRUST 113
(Series 724)
    
 
<TABLE>
<CAPTION>
                                                                                          Ratings(3)           Trustee's
                                                                      Optional       ---------------------   Determination
 Aggregate        Name of Issuer and Title of Issue Represented      Redemption       Standard                of Offering
  Principal        by Sponsor's Contracts to Purchase Bonds(1)      Provisions(2)     & Poor's    Moody's      Price(4)
<C>          <C> <S>                                              <C>                <C>         <C>        <C>
- ---------------------------------------------------------------------------------------------------------------------------
$   500,000      Ohio Air Quality Development Authority, State       2004 at 102        AAA         Aaa     $       449,315
                   of Ohio, Collateralized Air Quality
                   Development Revenue Refunding Bonds, 1994
                   Series B (The Cincinnati Gas & Electric
                   Company Project), 5.45% Due 1/1/24.
    500,000      Ohio Water Development Authority, Water             2002 at 102        AAA         Aaa             458,995
                   Development Revenue Refunding Bonds, Pure
                   Water Refunding and Improvement Series, 5.50%
                   Due 12/1/18. (Original issue discount bonds
                   delivered on or about October 14, 1992 at a
                   price of 89.804% of principal amount.)
    500,000      County of Cuyahoga, Ohio, Hospital Facilities       2003 at 102        AAA         Aaa             501,890
                   Revenue Bonds, Series 1993, Health Cleveland,
                   Inc. (Fairview General Hospital Project),
                   6.30% Due 8/15/15.
    500,000      County of Lucas, Ohio, Hospital Refunding           2003 at 102        AAA         Aaa             449,420
                   Revenue Bonds, Series 1993B (St. Vincent
                   Medical Center), 5.375% Due 8/15/17.
    500,000      County of Lucas, Ohio, Hospital Improvement and     2003 at 102        AAA         Aaa             420,085
                   Refunding Revenue Bonds, Series 1993 (The
                   Toledo Hospital), 5.00% Due 11/15/22.
                   (Original issue discount bonds delivered on
                   or about July 29, 1993 at a price of 91.402%
                   of principal amount.)
    500,000      City of Newark, Ohio, Water System Improvement      2003 at 102        AAA         Aaa             493,620
                   Bonds (Limited Tax General Obligation), 6.00%
                   Due 12/1/18.
    500,000      Commonwealth of Puerto Rico, Public Improvement   2002 at 101 1/2      AAA         Aaa             507,480
                   Refunding Bonds, Series 1992A (General
                   Obligation Bonds.), 6.25% Due 7/1/10.
- -----------                                                                                                 ---------------
$ 3,500,000                                                                                                 $     3,280,805
- -----------                                                                                                 ---------------
- -----------                                                                                                 ---------------
</TABLE>
 
See Notes to Schedules of Investments, page 81.
 
                                       71
<PAGE>
   
PENNSYLVANIA INSURED TRUST 178
    
 
   
    The  Portfolio of Pennsylvania  Insured Trust 178  consists of 7 obligations
issued by  entities located  in Pennsylvania  .  Three Bonds  in the  Trust  are
general  obligations of the governmental entities issuing them and are backed by
the taxing powers thereof. Four Bonds in  the Trust are payable as to  principal
and  interest from  the income of  a specific  project or authority  and are not
supported by the issuer's power to levy taxes. The sources of payment for  these
bonds  are divided  as follows:  College and  University Revenue,  1; Electrical
System Revenue,  1; Health  Care Facility  Revenue, 1;  Transportation  Facility
Revenue, 1. All of the Bonds in the Trust, as insured, are rated AAA by Standard
& Poor's Corporation and Aaa by Moody's Investors Service, Inc.
    
 
   
    At  the  Date  of  Deposit,  the  average  maturity  of  the  Bonds  in  the
Pennsylvania Insured Trust is 24.6 years. The average maturity of the Bonds in a
Trust is calculated based upon the stated maturities of the Bonds in such  Trust
(or,  with respect to  Bonds for which  funds or securities  have been placed in
escrow to redeem such Bonds on a  stated call date, based upon such call  date).
The  average maturity of the Bonds in a Trust may increase or decrease from time
to time as Bonds mature or are called or sold.
    
 
    For a discussion of  the risks associated with  investments in the bonds  of
various issuers, see "General Trust Information" in this section.
 
   
    The  Sponsor entered into  contracts to acquire the  Bonds between April 11,
1994 and April 12, 1994. The following summarizes certain information about  the
Bonds as of the business day prior to the Date of Deposit:
    
 
<TABLE>
<CAPTION>
                                                                  Difference between Trustee's
                                                               Determination of Offering Price and
   Cost to    Profit (or loss)   Annual Interest   Bid Price              the Bid Price
   Sponsor       to Sponsor      Income to Trust    of Bonds       (as % of principal amount)
  ----------  -----------------  ----------------  ----------  -----------------------------------
  <S>         <C>                <C>               <C>         <C>
  $3,335,190       $16,950           $205,375      $3,334,640                 .50%
</TABLE>
 
    Neither   cost  to  Sponsor  nor  profit   (or  loss)  to  Sponsor  reflects
underwriting profits or losses received or  incurred by the Sponsor through  its
participation   in  underwriting  syndicates.  An  underwriter  or  underwriting
syndicate purchases bonds  from the issuer  on a negotiated  or competitive  bid
basis  as principal with  the motive of  marketing such bonds  to investors at a
profit. The Sponsor did not participate as  either the sole underwriter or as  a
manager  or member of a syndicate that  acted as the original underwriter of any
of the Bonds.
 
   
    Unitholders may  elect to  have interest  distributions made  on a  monthly,
quarterly or semi-annual basis. The interest on the Bonds initially deposited in
the  Pennsylvania Insured Trust, less estimated expenses, is estimated to accrue
at the  rate  of  $.01582  per  Unit per  day  under  the  semi-annual  plan  of
distribution,  $.01577 per Unit per day under the quarterly plan of distribution
and $.01568 per  Unit per  day under  the monthly  plan of  distribution. It  is
anticipated  that the amount of interest to be distributed per Unit in each year
under each plan  of distribution will  initially be substantially  equal to  the
Estimated Net Annual Interest Income per Unit for that plan.
    
 
                                       72
<PAGE>
    Details of interest distributions per Unit of the Pennsylvania Insured Trust
under  the various plans appear in the  following table based upon estimated Net
Annual Interest Income at the Date of Deposit:
 
<TABLE>
<CAPTION>
                                                                                                          Normal
                                                                                                      Distributions
Pennsylvania Insured Trust                               1994                          1995              per Year
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        5/1            8/1           11/1            2/1
Distribution Date.....................       5/15           8/15          11/15           2/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .2822(1)                                                  $  5.6458
                                                          --------  $.4704 every month  --------
Quarterly Distribution Plan...........  $   .2822(1)   $  1.4193(2)   $  1.4193      $  1.4193        $  5.6778
Semi-Annual Distribution Plan.........  $   .2822(1)                  $  2.8476(3)                    $  5.6968
- --------------------------------------------------------------------------------------------------------------------
<FN>
 * Record Dates for semi-annual distributions are May 1 and November 1; for quarterly distributions, they are February 1, May  1,
   August 1 and November 1. Record Dates for monthly distributions are the first day of each month.
(1)  The first distribution will be paid to all Unitholders,  regardless of the distribution plan selected. Such distribution may
    be more or less than a regular monthly distribution.
(2) Regular 3-month distribution.
(3) Regular 6-month distribution.
</TABLE>
 
   
    The accrual amounts set forth above, and  in turn the amount of interest  to
be  distributed annually per Unit, will  generally change as Bonds are redeemed,
mature or are sold or as fees and expenses increase or decrease.
    
 
TAX STATUS--PENNSYLVANIA INSURED TRUST
 
    For a discussion of the Federal tax status of income earned on  Pennsylvania
Insured Trust Units, see Section 11.
 
    In  the opinion of  Dechert Price & Rhoads,  special Pennsylvania counsel to
the Series, under existing law:
 
        Units evidencing  fractional  undivided interests  in  the  Pennsylvania
    Insured  Trust  are  not  subject  to any  of  the  personal  property taxes
    presently in effect in Pennsylvania to the extent of that proportion of  the
    Trust  represented by Bonds issued by  the Commonwealth of Pennsylvania, its
    agencies and  instrumentalities,  or by  any  county, city,  borough,  town,
    township,  school  district,  municipality  and  local  housing  or  parking
    authority in the Commonwealth of Pennsylvania or issued by Puerto Rico,  the
    Virgin Islands, Guam or the Northern Mariana Islands ("Pennsylvania Bonds").
    The  taxes referred to  above include the County  Personal Property Tax, the
    additional personal property  taxes imposed on  Pittsburgh residents by  the
    School  District of Pittsburgh  and by the  City of Pittsburgh. Pennsylvania
    Insured Trust Units may  be taxable under  the Pennsylvania inheritance  and
    estate taxes.
 
        The  proportion  of interest  income  representing interest  income from
    Pennsylvania Bonds distributed  to Unitholders of  the Pennsylvania  Insured
    Trust is not taxable under the Pennsylvania Personal Income Tax or under the
    Corporate  Net Income Tax imposed  on corporations by Article  IV of the Tax
    Reform Code. Nor will such interest be taxable under the Philadelphia School
    District Investment Income Tax imposed on Philadelphia resident individuals.
 
        The disposition by the Pennsylvania Insured Trust of a Pennsylvania Bond
    (whether by  sale, exchange,  redemption or  payment at  maturity) will  not
    constitute  a taxable event to a  Unitholder under the Pennsylvania Personal
    Income Tax if the  Pennsylvania Bond was issued  prior to February 1,  1994.
    Further, although there is no published
 
                                       73
<PAGE>
    authority on the subject, counsel is of the opinion that (i) a Unitholder of
    the  Pennsylvania  Insured Trust  will not  have a  taxable event  under the
    Pennsylvania state  and local  income  taxes referred  to in  the  preceding
    paragraph  (other than the Corporate Net  Income Tax) upon the redemption or
    sale of his Unit to the extent  that the Pennsylvania Insured Trust is  then
    comprised  of Pennsylvania Bonds  issued prior to February  1, 1994 and (ii)
    the dispositions by the  Pennsylvania Insured Trust  of a Pennsylvania  Bond
    (whether  by sale,  exchange, redemption  or payment  at maturity)  will not
    constitute a taxable event  to a Unitholder under  the Corporate Net  Income
    Tax  or  the  Philadelphia  School District  Investment  Income  Tax  if the
    Pennsylvania Bond was issued prior to February 1, 1994. (The School District
    tax has no application to  gain on the disposition  of property held by  the
    taxpayer for more than six months.)
 
        Gains  on the  sale, exchange, redemption,  or payment at  maturity of a
    Pennsylvania Bond issued on or after February 1, 1994, will be taxable under
    all of these taxes, as will gains on the redemption or sale of a unit to the
    extent that the Trust is comprised of Pennsylvania Bonds issued on or  after
    February 1, 1994.
 
ECONOMIC FACTORS--PENNSYLVANIA
 
    RISK   FACTORS--Prospective   investors   should   consider   the  financial
difficulties and pressures which the Commonwealth of Pennsylvania and certain of
its municipal subdivisions have undergone. Both the Commonwealth and the City of
Philadelphia are experiencing  significant revenue shortfalls.  There can be  no
assurance  that  the  Commonwealth  will not  experience  a  further  decline in
economic conditions or that portions  of the municipal obligations purchased  by
the  Fund  will not  be  affected by  such a  decline.  Without intending  to be
complete, the following briefly  summarizes some of  these difficulties and  the
current  financial situation, as  well as some of  the complex factors affecting
the financial situation in the Commonwealth. It is derived from sources that are
generally available to investors  and is based in  part on information  obtained
from  various agencies in the Commonwealth. No independent verification has been
made of the following information.
 
    STATE ECONOMY--Pennsylvania  has been  historically  identified as  a  heavy
industry  state although that reputation has  changed recently as the industrial
composition of the Commonwealth  diversified when the  coal, steel and  railroad
industries began to decline. The major new sources of growth in the Commonwealth
are  in  the  service  sector, including  trade,  medical  and  health services,
education and financial institutions. The Commonwealth's agricultural industries
are also an important component of  its economic structure, accounting for  more
than $3.6 billion in crop and livestock products annually while agribusiness and
food related industries support $38 billion in economic activity annually.
 
    Non-agricultural  employment within the  Commonwealth has increased steadily
from 1984 to its 1992 level of  81.3 percent of total employment. The growth  in
employment  experienced  in the  Commonwealth  is comparable  to  the nationwide
growth  in  employment  which  has   occurred  during  this  period.  In   1992,
manufacturing  employment  represented  18.7  percent  of  all  non-agricultural
employment in  the Commonwealth  while the  services sector  accounted for  29.3
percent and the trade sector accounted for 22.7 percent.
 
    The  Commonwealth is currently  facing a slowdown  in its economy. Moreover,
economic strengths and weaknesses vary  in different parts of the  Commonwealth.
In  general,  heavy  industry  and  manufacturing  have  been  facing increasing
competition from foreign producers. During 1992, the annual average unemployment
rate in the Commonwealth was 7.5 percent compared to 7.4 percent for the  United
States. For January 1994 the unadjusted
 
                                       74
<PAGE>
unemployment  rate was 6.7  percent in the  Commonwealth and 7.3  percent in the
United  States,  while  the  seasonally  adjusted  unemployment  rate  for   the
Commonwealth was 6.0 percent and for the United States was 7.3 percent.
 
    STATE  BUDGET--The  Commonwealth operates  under an  annual budget  which is
formulated and submitted for legislative approval by the Governor each February.
The Pennsylvania  Constitution  requires  that the  Governor's  budget  proposal
consist  of three parts: (i) a  balanced operating budget setting forth proposed
expenditures and estimated revenues from all sources and, if estimated  revenues
and available surplus are less than proposed expenditures, recommending specific
additional  sources of revenue sufficient to  pay the deficiency; (ii) a capital
budget setting forth proposed expenditures to  be financed from the proceeds  of
obligations  of the  Commonwealth or its  agencies or from  operating funds; and
(iii) a financial plan for not less than the succeeding five fiscal years, which
includes for each year projected  operating expenditures and estimated  revenues
and  projected expenditures for capital projects.  The General Assembly may add,
change or delete  any items  in the  budget prepared  by the  Governor, but  the
Governor  retains veto  power over the  individual appropriations  passed by the
legislature. The Commonwealth's fiscal  year begins on July  1 and ends on  June
30.
 
    All  funds  received by  the Commonwealth  are  subject to  appropriation in
specific amounts by the  General Assembly or by  executive authorization by  the
Governor.  Total appropriations enacted  by the General  Assembly may not exceed
the ensuing  year's  estimated revenues,  plus  (less) the  unappropriated  fund
balance  (deficit) of the preceding year, except for constitutionally authorized
debt service payments. Appropriations from the principal operating funds of  the
Commonwealth  (the General  Fund, the Motor  License Fund and  the State Lottery
Fund)  are  generally  made  for  one  fiscal  year  and  are  returned  to  the
unappropriated  surplus of the fund if not spent or encumbered by the end of the
fiscal year. The Constitution specifies that a surplus of operating funds at the
end of a fiscal year must be appropriated for the ensuing year.
 
    Pennsylvania  uses  the  "fund"  method  of  accounting  for  receipts   and
disbursements. For purposes of government accounting, a "fund" is an independent
fiscal  and accounting entity  with a self-balancing  set of accounts, recording
cash and/or other resources together with all related liabilities and  equities.
In  the  Commonwealth,  over  120 funds  have  been  established  by legislative
enactment or  in certain  cases  by administrative  action  for the  purpose  of
recording  the receipts and disbursement of moneys received by the Commonwealth.
Annual budgets are adopted each fiscal year for the principal operating funds of
the Commonwealth  and  several other  special  revenue funds.  Expenditures  and
encumbrances  against these  funds may  only be  made pursuant  to appropriation
measures enacted  by the  General Assembly  and approved  by the  Governor.  The
General  Fund,  the  Commonwealth's  largest fund,  receives  all  tax revenues,
non-tax revenues and federal grants and  entitlements that are not specified  by
law  to be deposited elsewhere. The majority of the Commonwealth's operating and
administrative expenses are payable from the  General Fund. Debt service on  all
bond  indebtedness of the Commonwealth, except  that issued for highway purposes
or for the benefit of other special  revenue funds, is payable from the  General
Fund.
 
    Financial  information for the principal operating funds of the Commonwealth
are maintained on a budgetary basis of accounting, which is used for the purpose
of ensuring compliance with the enacted operating budget. The Commonwealth  also
prepares  annual  financial  statements in  accordance  with  generally accepted
accounting principles ("GAAP"). Budgetary basis financial reports are based on a
modified cash basis  of accounting  as opposed to  a modified  accrual basis  of
accounting    prescribed   by   GAAP.    Financial   information   is   adjusted
 
                                       75
<PAGE>
at fiscal year-end to  reflect appropriate accruals  for financial reporting  in
conformity with GAAP.
 
    RECENT  FINANCIAL RESULTS--At  the end of  fiscal 1990 and  fiscal 1991, the
unreserved -undesignated  fund  balance was  a  negative $205.8  million  and  a
negative  $1,189.2 million,  respectively, a drop  of $579.6  million and $983.4
million, respectively, from the year-earlier amounts. The decline in the  fiscal
1990  unreserved-undesignated fund balance for government fund types was largely
the result  of a  $718.2 million  operating deficit  in the  General Fund  which
caused  the total fund balance of the General  Fund to fall to a negative $119.8
million at June 30, 1990. The decline in the fiscal 1991 unreserved-undesignated
fund balance  was  principally the  result  of operating  deficits  of  $1,076.6
million  and  $66.2 million,  respectively, in  the General  Fund and  the State
Lottery Fund.
 
    Rising  demands  on  state  programs  caused  by  the  economic   recession,
particularly  for  medical  assistance  and cash  assistance  programs,  and the
increased costs  of special  education programs  and correction  facilities  and
programs,  contributed  to  increased  expenditures in  fiscal  1991,  while tax
revenues for  the  1991 fiscal  year  were  severely affected  by  the  economic
recession.  Total corporation tax receipts and sales and use tax receipts during
fiscal 1991  were,  respectively, 7.3  percent  and 0.9  percent  below  amounts
collected during fiscal 1990. Personal income tax receipts also were affected by
the  recession but  not to  the extent  of the  other major  General Fund taxes,
increasing only 2.0 percent over fiscal 1990 collections.
 
    The Commonwealth experienced a $454 million  general fund deficit as of  the
end  of  its 1991  fiscal year.  The  deficit reflected  below-estimate economic
activity  and  growth  rates  of  economic  indicators  and  total  tax  revenue
shortfalls  of $817  million (4.1  percent) below  those assumed  in the enacted
budget. Economic conditions  also affected  expenditure trends  during the  1991
fiscal  year, with  expenditures for  medical assistance  costs and  other human
service programs  running  $512 million  above  estimates assumed  in  the  1991
budget.  In January  1991, the  Commonwealth initiated  a number  of cost-saving
measures, including the firing of  2,000 state employees, deferral of  paychecks
and  reduction of funds  to state universities,  which resulted in approximately
$871 million cost savings.
 
    Total general fund revenues for fiscal 1992 were $14,516.8 million, which is
approximately 22 percent higher than  fiscal 1991 revenues of $11,877.3  million
due  in large part  to tax increases. The  increased revenues funded substantial
increases in education, social services and corrections programs. As a result of
the tax increases and  certain appropriation lapses, fiscal  1992 ended with  an
$8.8  million  surplus  after having  started  the year  with  an unappropriated
balance deficit of $454 million.
 
    FISCAL  1993  BUDGET.--On  June  30,  1992,  the  Pennsylvania   legislature
presented  the Governor with a $14.126 billion  general fund budget for the 1993
fiscal year,  which  began on  July  1, 1992.  Before  signing the  budget,  the
Governor deleted approximately $73 million in certain state expenditures such as
aid to county courts and district justices. As a result, the budget for the 1993
fiscal  year  was approximately  $14.046  billion, which  is  approximately $105
million more than  the fiscal  1992 budget. On  February 9,  1993, the  Governor
announced  that he anticipated that  the 1993 budget would  be in balance at the
end of the fiscal year.
 
    FISCAL 1994 BUDGET--On  May 28, 1993,  the Governor signed  a $14.9  billion
general  fund budget, an increase of  approximately five percent from the fiscal
1993 budget.  A substantial  amount  of the  increase  is targeted  for  medical
assistance programs and prisons.
 
                                       76
<PAGE>
    FISCAL  1995  BUDGET--On February  8, 1994,  the  Governor proposed  a $15.9
billion general fund budget,  an increase of over  four percent from the  Fiscal
1994 budget. A substantial amount of the increase is targeted for human services
and prisons.
 
    DEBT  LIMITS AND OUTSTANDING DEBT--The Pennsylvania Constitution permits the
issuance of the following  types of debt: (i)  debt to suppress insurrection  or
rehabilitate  areas affected by  disaster; (ii) electorate  approved debt; (iii)
debt for capital projects subject to an aggregate outstanding debt limit of 1.75
times the annual average  tax revenues of the  preceding five fiscal years;  and
(iv) tax anticipation notes payable in the fiscal year of issuance.
 
    Under the Pennsylvania Fiscal Code, the Auditor General is required annually
to  certify  to  the  Governor  and  the  General  Assembly  certain information
regarding the Commonwealth's indebtedness. According to the most recent  Auditor
General  certificate, the average annual tax  revenues deposited in all funds in
the five fiscal years ended June 30, 1993 was $14.5 billion, and therefore,  the
net  debt limitation for the 1994 fiscal  year is $27.1 billion. Outstanding net
debt totaled $4.0 billion  at June 30,  1993, a decrease  of $42.2 million  from
June  30, 1992. At February 28, 1994, the amount of debt authorized by law to be
issued, but not yet incurred was $15.0 billion.
 
    DEBT RATINGS--All outstanding general  obligation bonds of the  Commonwealth
are rated AA- by S&P and A1 by Moody's.
 
    CITY  OF  PHILADELPHIA--The City  of  Philadelphia experienced  a  series of
general fund deficits for fiscal years  1988 through 1992 which have  culminated
in  the City's present serious financial difficulties. In its 1992 Comprehensive
Annual Financial Report, Philadelphia reported a cumulative general fund deficit
of $71.4 million for fiscal year 1992.
 
    In June  1991, the  Pennsylvania  legislature established  the  Pennsylvania
Intergovernmental  Cooperation  Authority  ("PICA"), a  five-member  board which
oversees the  fiscal  affairs  of  the City  of  Philadelphia.  The  Legislation
empowers  PICA to  issue notes  and bonds  on behalf  of Philadelphia,  and also
authorizes Philadelphia to levy  a one-percent sales tax  the proceeds of  which
would  be used  to pay off  the bonds.  In return for  PICA's fiscal assistance,
Philadelphia is required, among other things, to establish a five-year financial
plans  that  include  balanced  annual   budgets.  Under  the  legislation,   if
Philadelphia  does not  comply with  such requirements,  PICA may  withhold bond
revenues and certain state funding.
 
    In May 1992,  the city counsel  of Philadelphia approved  the Mayor's  first
five-year  plan and  adopted a fiscal  1993 budget.  On June 5,  1992, PICA sold
approximately $480 million in bonds at yields ranging from 5.25 percent to  6.88
percent.  The proceeds  of the bonds  were used to  cover shortfalls accumulated
over fiscal years 1988  through 1991, projected deficits  for fiscal years  1992
and  1993, construction projects  and other capital  expenditures. In accordance
with the enabling legislation, PICA was guaranteed a percentage of the wage  tax
revenue expected to be collected from Philadelphia residents to permit repayment
of the bonds.
 
    In  January 1993, Philadelphia anticipated  a cumulative general fund budget
deficit of $57 million for the 1993 fiscal year. In response to the  anticipated
deficit,  the Mayor unveiled a financial plan eliminating the budget deficit for
the 1993 budget year  through significant service cuts  that included a plan  to
privatize  certain city  provided services. Due  to an upsurge  in tax receipts,
cost-cutting and  additional PICA  borrowings, Philadelphia  completed the  1993
fiscal year with a balanced general fund budget.
 
                                       77
<PAGE>
    In  January 1994, the Mayor proposed a $2.3 billion city general fund budget
that included no  tax increases,  no significant service  cuts and  a series  of
modest  health  and welfare  program  increases. At  that  time, the  Mayor also
unveiled a $2.2 billion program  (the "Philadelphia Economic Stimulus  Program")
designed  to stimulate Philadelphia's economy and stop  the loss of 1,000 jobs a
month. However, the success  of the Philadelphia  Economic Stimulus Program  has
been predicated upon several contingencies including, among others, $250 million
in  revenues from riverboat gambling over the next three years, which first must
be approved by the state legislature,  and $100 million in federal  "empowerment
zone"  subsidies, which Philadelphia may or may not receive. As of January 1994,
the 1994  general fund  budget was  running at  a deficit  of approximately  $10
million.  The Mayor has predicted that the  general fund will be balanced by the
end of the 1994 fiscal year.
 
    The Standard & Poor's Corporation rating on Philadelphia general  obligation
bonds is "BB." The Moody's Investors Service rating is currently "Ba."
 
    LITIGATION--The  Commonwealth is  a party to  numerous lawsuits  in which an
adverse final decision could  materially affect the Commonwealth's  governmental
operations  and consequently its ability to pay debt service on its obligations.
The Commonwealth also faces tort claims  made possible by the limited waiver  of
sovereign immunity effected by Act 152, approved September 28, 1978.
 
PENNSYLVANIA TAXABLE ESTIMATED CURRENT RETURN TABLE
 
    The  following tables show the approximate taxable estimated current returns
for individuals  that are  equivalent to  tax-exempt estimated  current  returns
under  combined Federal and  state taxes, using  published 1994 marginal Federal
tax rates and marginal state tax  rates currently available and scheduled to  be
in  effect.  The  tables  incorporate  increased  tax  rates  for  higher-income
taxpayers that were  included in  the Revenue  Reconciliation Act  of 1993.  For
cases  in which more than one state  bracket falls within a Federal bracket, the
highest state bracket is combined with  the Federal bracket. The combined  state
and  Federal tax  brackets shown  reflect the fact  that state  tax payments are
currently deductible for Federal  tax purposes. The  tables illustrate what  you
would  have to  earn on  taxable investments  to equal  the tax-exempt estimated
current return for your  income tax bracket. A  taxpayer's marginal tax rate  is
affected  by both his taxable income and  his adjusted gross income. Locate your
adjusted gross and  your taxable  income (which  is your  adjusted gross  income
reduced by any deductions and exemptions), then locate your tax bracket based on
joint  or single  tax filing.  Read across  to the  equivalent taxable estimated
current return you would need to match the tax-free income.
 
                                       78
<PAGE>
 COMBINED MARGINAL TAX RATES FOR JOINT TAXPAYERS WITH FOUR PERSONAL EXEMPTIONS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross      State* and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 38.0 $     0-111.8      17.5   %     5.76    6.06    6.36    6.67    6.97    7.27    7.58    7.88
    38.0- 91.9       0-111.8      30.0         6.79    7.14    7.50    7.86    8.21    8.57    8.93    9.29
                 111.8-167.7      31.0         6.88    7.25    7.61    7.97    8.33    8.70    9.06    9.42
    91.9-140.0       0-111.8      33.0         7.09    7.46    7.84    8.21    8.58    8.96    9.33    9.70
                 111.8-167.7      34.0         7.20    7.58    7.95    8.33    8.71    9.09    9.47    9.85
                 167.7-290.2      36.0         7.42    7.81    8.20    8.59    8.98    9.38    9.77   10.16
   140.0-250.0   111.8-167.7      39.0         7.79    8.20    8.61    9.02    9.43    9.84   10.25   10.66
                 167.7-290.2      41.5         8.12    8.55    8.97    9.40    9.83   10.26   10.68   11.11
                  Over 290.2      39.0   2     7.79    8.20    8.61    9.02    9.43    9.84   10.25   10.66
    Over 250.0   167.7-290.2      45.5         8.72    9.17    9.63   10.09   10.55   11.01   11.47   11.93
                  Over 290.2      42.5   3     8.26    8.70    9.13    9.57   10.00   10.43   10.87   11.30
</TABLE>
 
  COMBINED MARGINAL TAX RATES FOR SINGLE TAXPAYERS WITH ONE PERSONAL EXEMPTION
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted      Combined
    Taxable        Gross      State* and                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      4.75%   5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 22.8 $     0-111.8      17.5         5.76    6.06    6.36    6.67    6.97    7.27    7.58    7.88
    22.8- 55.1       0-111.8      30.0         6.79    7.14    7.50    7.86    8.21    8.57    8.93    9.29
    55.1-115.0       0-111.8      33.0         7.09    7.46    7.84    8.21    8.58    8.96    9.33    9.70
                 111.8-234.3      34.5         7.25    7.63    8.02    8.40    8.78    9.16    9.54    9.92
   115.0-250.0   111.8-234.3      39.5         7.85    8.26    8.68    9.09    9.50    9.92   10.33   10.74
                  Over 234.3      39.0   2     7.79    8.20    8.61    9.02    9.43    9.84   10.25   10.66
    Over 250.0    Over 234.3      42.5   3     8.26    8.70    9.13    9.57   10.00   10.43   10.87   11.30
<FN>
- ------------------
      1 The table reflects the effect of the limitations  on itemized deductions and the deduction for personal exemptions.  They
were  designed to phase out certain benefits of these deductions for higher income taxpayers. These limitations, in effect, raise
the current maximum marginal Federal tax rate to approximately 44.0  percent for taxpayers filing a joint return and entitled  to
four  personal exemptions and to  approximately 41.0 percent for taxpayers  filing a single return  entitled to only one personal
exemption. These limitations are  subject to certain maximums,  which depend on  the number of exemptions  claimed and the  total
amount  of the taxpayer's itemized  deductions. For example, the limitation  on itemized deductions will  not cause a taxpayer to
lose more than 80% of his allowable itemized deductions, with certain exceptions.
      2 Federal tax rate reverts to 36.0% after the 80% cap on the limitation on itemized deductions has been met.
      3 Federal tax rate reverts to 39.6% after the 80% cap on the limitation on itemized deductions has been met.
</TABLE>
 
    A comparison of  tax-free and equivalent  taxable estimated current  returns
with  the returns on various  taxable investments is one  element to consider in
making an  investment  decision.  The Sponsor  may  from  time to  time  in  its
advertising  and sales materials  compare the then  current estimated returns on
the Trust and returns over specified periods on other similar Nuveen Trusts with
returns on taxable investments such as corporate or U.S. Government bonds,  bank
CD's  and  money  market accounts  or  money  market funds,  each  of  which has
investment characteristics  that  may  differ  from those  of  the  Trust.  U.S.
Government  bonds, for example, are  backed by the full  faith and credit of the
U.S. Government and bank CD's and money market accounts are insured by an agency
of the federal government. Money market accounts and money market funds  provide
stability  of principal, but pay interest at  rates that vary with the condition
of the short-term debt market. The  investment characteristics of the Trust  are
described more fully elsewhere in this Prospectus.
 
                                       79
<PAGE>
   
Nuveen Tax-Exempt Unit Trust
Schedule of Investments at Date of Deposit
April 13, 1994
PENNSYLVANIA INSURED TRUST 178
(Series 724)
    
 
<TABLE>
<CAPTION>
                                                                                          Ratings(3)           Trustee's
                                                                      Optional       ---------------------   Determination
 Aggregate        Name of Issuer and Title of Issue Represented      Redemption       Standard                of Offering
  Principal        by Sponsor's Contracts to Purchase Bonds(1)      Provisions(2)     & Poor's    Moody's      Price(4)
<C>          <C> <S>                                              <C>                <C>         <C>        <C>
- ---------------------------------------------------------------------------------------------------------------------------
$   500,000      Allegheny County Hospital Development Authority     2002 at 100        AAA         Aaa     $       496,640
                   (Pennsylvania), Health Center Revenue Bonds,
                   Series 1992A (Presbyterian University Health
                   System, Inc. Project), 6.25% Due 11/1/23.
    500,000      Bucks County Community College Authority, Bucks     2002 at 100        AAA         Aaa             504,715
                   County, Pennsylvania, College Building
                   Revenue and Refunding Bonds, Series of 1992,
                   6.25% Due 6/15/14. (General Obligation
                   Bonds.)
    500,000      Delaware County Authority (Commonwealth of          2002 at 102        AAA         Aaa             497,200
                   Pennsylvania), University Revenue Bonds,
                   Series of 1992 (Villanova University), 6.00%
                   Due 8/1/12.
    500,000      Lehigh County Industrial Development Authority,     2004 at 102        AAA         Aaa             447,905
                   Pollution Control Revenue Refunding Bonds,
                   1994 Series A (Pennsylvania Power & Light
                   Company Project), 5.50% Due 2/15/27.
    500,000      Lehigh-Northampton Airport Authority                2004 at 102        AAA         Aaa             453,885
                   (Pennsylvania), Airport Revenue Bonds, Series
                   1993B (Allentown-Bethlehem-Easton
                   International Airport), 5.50% Due 1/1/18.
    500,000      Oil City Area School District, Venango County,      2004 at 100        AAA         Aaa             453,380
                   Pennsylvania, General Obligation Bonds,
                   Series B of 1994, 5.45% Due 5/15/18.
    500,000      City of Pittsburgh (Commonwealth of                 2002 at 102        AAA         Aaa             498,415
                   Pennsylvania), General Obligation Bonds,
                   Series of 1992D, 6.125% Due 9/1/17.
- -----------                                                                                                 ---------------
$ 3,500,000                                                                                                 $     3,352,140
- -----------                                                                                                 ---------------
- -----------                                                                                                 ---------------
</TABLE>
 
See Notes to Schedules of Investments, page 81.
 
                                       80
<PAGE>
NOTES TO SCHEDULES OF INVESTMENTS
 
    (1) Contracts,  which  are  "when-issued"  or  "regular  way"  contracts  or
        contracts having delivery dates beyond the normal settlement date,  have
        been  deposited with the Trustee on the Date of Deposit. The performance
        of such contracts is secured by an irrevocable letter of credit,  issued
        by  a major commercial bank, which  has been deposited with the Trustee.
        At the Date  of Deposit, Bonds  may have been  delivered to the  Sponsor
        pursuant  to certain of these contracts; the Sponsor has assigned to the
        Trustee all of its right, title and interest in and to such Bonds.
 
    (2) The Bonds are first subject to optional redemption in the years, and  at
        the  prices, shown.  Unless otherwise  indicated, the  Bonds, except for
        Bonds issued at a substantial original issue discount, are redeemable at
        declining prices (but not below par value) in subsequent years. Original
        issue  discount  bonds,  including  zero  coupon  bonds,  are  generally
        redeemable  at  prices  based on  the  issue  price plus  the  amount of
        original issue discount accreted to redemption plus, if applicable, some
        premium, the amount of which will decline in subsequent years. The Bonds
        may also be subject to sinking fund redemption without premium prior  to
        the dates shown.
 
        Certain  Bonds may be subject to redemption without premium prior to the
        date shown  pursuant  to  special  or  mandatory  call  provisions;  for
        example,  if bond proceeds are not able  to be used as contemplated, the
        project is condemned or sold, or the project is destroyed and  insurance
        proceeds  are used to  redeem the bonds.  Single family mortgage revenue
        bonds and housing authority bonds are  most likely to be called  subject
        to  such provisions, but other bonds may have similar call features. See
        Section 4 and "General Trust Information" in this Section.
 
        The Trustee's determination of the offering prices of Bonds in the  Fund
        may  be  greater or  less than  the  amounts that  may be  received upon
        redemption or  maturity  of  such Bonds.  Subject  to  rules  concerning
        amortization  of bond  premium and of  original issue  discount, gain or
        loss realized  by  the Trustee  on  disposition  of any  Bonds  will  be
        recognized  as taxable capital gain or loss by Unitholders. (See Section
        4.)
 
    (3) See "Description  of  Ratings" herein.  All  the Bonds  in  the  Insured
        Trusts,  as insured by the  Insurer, are rated AAA  by Standard & Poor's
        Corporation and Aaa by Moody's Investors Service, Inc. (See Section 5.)
 
    (4) As determined by Kenny S&P Evaluation Services on behalf of the  Trustee
        as  of the close of  business on the business  day preceding the Date of
        Deposit. The prices as determined by Kenny S&P Evaluation Services  have
        been rounded to the nearest dollar.
 
                                       81
<PAGE>
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
   
     TO  THE  BOARD OF  DIRECTORS  OF JOHN  NUVEEN  & CO.  INCORPORATED AND
     UNITHOLDERS OF NUVEEN TAX-EXEMPT UNIT TRUST, SERIES 724:
    
 
   
       We have audited  the accompanying  statements of  condition and  the
     related  schedules of investments at date  of deposit (included in the
     prospectus  herein)  of  Nuveen  Tax-Exempt  Unit  Trust,  Series  724
     (comprising  Virginia Traditional Trust  285, California Insured Trust
     223, Florida Insured Trust 188,  Massachusetts Insured Trust 112,  New
     York  Insured  Trust  215,  Ohio Insured  Trust  113  and Pennsylvania
     Insured Trust 178), as of  April 13, 1994. These financial  statements
     are  the  responsibility  of  the Sponsor.  Our  responsibility  is to
     express an opinion on these financial statements based on our audits.
    
 
       We conducted  our  audits  in  accordance  with  generally  accepted
     auditing  standards. Those standards require  that we plan and perform
     the audit to obtain reasonable  assurance about whether the  financial
     statements  are  free  of  material  misstatement.  An  audit includes
     examining, on  a  test  basis, evidence  supporting  the  amounts  and
     disclosures  in  the  financial  statements.  Our  procedures included
     confirmation of the irrevocable letter  of credit arrangement for  the
     purchase  of securities,  described in Note  (1) to  the statements of
     condition, by correspondence with the Trustee. An audit also  includes
     assessing  the  accounting principles  used and  significant estimates
     made by  the Sponsor,  as  well as  evaluating the  overall  financial
     statement   presentation.  We  believe  that   our  audits  provide  a
     reasonable basis for our opinion.
 
   
       In  our  opinion,  the  statements  of  condition  and  the  related
     schedules  of investments at date of deposit referred to above present
     fairly, in all material  respects, the financial  position of each  of
     the  trusts constituting the Nuveen  Tax-Exempt Unit Trust, Series 724
     as of April 13, 1994, in conformity with generally accepted accounting
     principles.
    
 
                                                      ARTHUR ANDERSEN & CO.
 
   
     Chicago, Illinois,
     April 13, 1994.
    
 
                                       82
<PAGE>
                            Statements of Condition
 
   
                    NUVEEN TAX-EXEMPT UNIT TRUST, SERIES 724
    
   
 (Virginia Traditional Trust 285, California Insured Trust 223, Florida Insured
  Trust 188, Massachusetts Insured Trust 112, New York Insured Trust 215, Ohio
             Insured Trust 113 and Pennsylvania Insured Trust 178)
    
   
                              As of April 13, 1994
    
 
<TABLE>
<CAPTION>
                                             Virginia          California          Florida         Massachusetts
                                           Traditional          Insured            Insured            Insured
    TRUST PROPERTY                          Trust 285          Trust 223          Trust 188          Trust 112
<S>                                       <C>                <C>                <C>                <C>
                                          --------------     --------------     --------------     --------------
Sponsor's contracts to purchase Tax-
 Exempt Bonds, backed by an irrevocable
 letter of credit(1)(2).................  $    3,338,134     $    3,188,646     $    3,250,735     $    3,360,800
Accrued interest to April 13, 1994 on
  underlying Bonds(1)...................          25,015             58,380             39,931             42,803
                                          --------------     --------------     --------------     --------------
            Total.......................  $    3,363,149     $    3,247,026     $    3,290,666     $    3,403,603
                                          --------------     --------------     --------------     --------------
                                          --------------     --------------     --------------     --------------
   LIABILITY AND INTEREST OF UNITHOLDERS
Liability:
    Accrued interest to April 13, 1994
      on underlying Bonds(3)............  $       25,015     $       58,380     $       39,931     $       42,803
                                          --------------     --------------     --------------     --------------
Interest of Unitholders:
    Units of fractional undivided
      interest outstanding (Virginia
      Traditional Trust 285-- 35,000;
      California Insured Trust
      223--35,000; Florida Insured Trust
      188--35,000; Massachusetts Insured
      Trust 112--35,000)
      Cost to investors(4)..............  $    3,510,115     $    3,352,925     $    3,418,213     $    3,533,948
        Less: Gross underwriting
          commission(5).................        (171,981)          (164,279)          (167,478)          (173,148)
                                          --------------     --------------     --------------     --------------
    Net amount applicable to
      investors.........................  $    3,338,134     $    3,188,646     $    3,250,735     $    3,360,800
                                          --------------     --------------     --------------     --------------
            Total.......................  $    3,363,149     $    3,247,026     $    3,290,666     $    3,403,603
                                          --------------     --------------     --------------     --------------
                                          --------------     --------------     --------------     --------------
<FN>
(1) Represented by contracts  to purchase Tax-Exempt  Bonds which include "when  issued" or "regular  way" or "delayed  delivery"
    contracts  for which an irrevocable letter of  credit issued by a major commercial  bank has been deposited with the Trustee.
    The amount of such letter of credit  and any cash deposited exceeds the amount  necessary for the purchase of the Bonds  plus
    accrued  interest to the Date of  Deposit. At the Date of  Deposit, Bonds may have been  delivered to the Sponsor pursuant to
    certain of these contracts; the  Sponsor has assigned to  the Trustee all of  its rights, title and  interest in and to  such
    Bonds.
(2)  Aggregate value (at offering prices) as of the Date of  Deposit of the Bonds listed under "Schedules of Investments" herein,
    and their aggregate cost to the Trusts are the same. Such offering prices were determined by Kenny S&P Evaluation Services as
    of the close of business on the business day prior to the Date of Deposit. (See Section 10.) Insurance coverage providing for
    the timely payment, when due, of all principal  of and interest on the Bonds in  the Insured Trusts has been obtained by  the
    Sponsor  or by the issuers of such Bonds. Such insurance does not guarantee the market value of the Bonds or the value of the
    Units. Both the bid and the offering prices of the underlying  Bonds and of the Units may include value attributable to  such
    policies of insurance.
(3) Representing, as set forth in Section 8, advancement by the Trustee of an amount equal to the accrued Bond interest as of the
    Date of Deposit from the later of the last payment date on the Bonds or the date of issuance thereof.
(4) Aggregate Public Offering Price (exclusive of accrued interest) computed as set forth under Section 6.
(5) The gross underwriting commission has been calculated on the assumption that the Units offered by this prospectus are sold in
    single transactions involving less than $50,000 or 500 Units. At this level, the sales charge is 4.90% of the Public Offering
    Price  in the case of National and State Trusts, 4.25% thereof in  the case of Long Intermediate Trusts, 3.90% in the case of
    Intermediate Trusts, 3.00% in the  case of Short Intermediate Trusts  and 2.50% in the case  of Short Term Trusts. In  single
    transactions involving 500 Units or more, the sales charge is reduced. (See Section 6.)
</TABLE>
 
                                       83
<PAGE>
   
                            Statements of Condition
                              As of April 13, 1994
                                  (Continued)
    
 
<TABLE>
<CAPTION>
                                             New York             Ohio           Pennsylvania
                                             Insured            Insured            Insured
    TRUST PROPERTY                          Trust 215          Trust 113          Trust 178
                                          --------------     --------------     --------------
<S>                                       <C>                <C>                <C>
Sponsor's contracts to purchase
 Tax-Exempt Bonds, backed by an
 irrevocable letter of credit(1)(2).....  $    3,324,358     $    3,280,805     $    3,352,140
Accrued interest to April 13, 1994 on
  underlying Bonds(1)...................          47,479             57,341             52,803
                                          --------------     --------------     --------------
            Total.......................  $    3,371,837     $    3,338,146     $    3,404,943
                                          --------------     --------------     --------------
                                          --------------     --------------     --------------
   LIABILITY AND INTEREST OF UNITHOLDERS
Liability:
    Accrued interest to April 13, 1994
      on underlying Bonds(3)............  $       47,479     $       57,341     $       52,803
                                          --------------     --------------     --------------
Interest of Unitholders:
    Units of fractional undivided
      interest outstanding (New York
      Insured Trust 215-- 35,000; Ohio
      Insured Trust 113--35,000;
      Pennsylvania Insured Trust
      178--35,000)
      Cost to investors(4)..............  $    3,495,629     $    3,449,832     $    3,524,842
        Less: Gross underwriting
          commission(5).................        (171,271)          (169,027)          (172,702)
                                          --------------     --------------     --------------
    Net amount applicable to
      investors.........................  $    3,324,358     $    3,280,805     $    3,352,140
                                          --------------     --------------     --------------
            Total.......................  $    3,371,837     $    3,338,146     $    3,404,943
                                          --------------     --------------     --------------
                                          --------------     --------------     --------------
<FN>
(1)  Represented by contracts  to purchase Tax-Exempt  Bonds which include "when  issued" or "regular  way" or "delayed delivery"
    contracts for which an irrevocable letter of  credit issued by a major commercial  bank has been deposited with the  Trustee.
    The  amount of such letter of credit and  any cash deposited exceeds the amount necessary  for the purchase of the Bonds plus
    accrued interest to the Date of  Deposit. At the Date of  Deposit, Bonds may have been  delivered to the Sponsor pursuant  to
    certain  of these contracts; the  Sponsor has assigned to  the Trustee all of  its rights, title and  interest in and to such
    Bonds.
(2) Aggregate value (at offering prices) as of the Date  of Deposit of the Bonds listed under "Schedules of Investments"  herein,
    and their aggregate cost to the Trusts are the same. Such offering prices were determined by Kenny S&P Evaluation Services as
    of the close of business on the business day prior to the Date of Deposit. (See Section 10.) Insurance coverage providing for
    the  timely payment, when due, of all principal  of and interest on the Bonds in  the Insured Trusts has been obtained by the
    Sponsor or by the issuers of such Bonds. Such insurance does not guarantee the market value of the Bonds or the value of  the
    Units.  Both the bid and the offering prices of the underlying  Bonds and of the Units may include value attributable to such
    policies of insurance.
(3) Representing, as set forth in Section 8, advancement by the Trustee of an amount equal to the accrued Bond interest as of the
    Date of Deposit from the later of the last payment date on the Bonds or the date of issuance thereof.
(4) Aggregate Public Offering Price (exclusive of accrued interest) computed as set forth under Section 6.
(5) The gross underwriting commission has been calculated on the assumption that the Units offered by this prospectus are sold in
    single transactions involving less than $50,000 or 500 Units. At this level, the sales charge is 4.90% of the Public Offering
    Price in the case of National and State Trusts, 4.25% thereof  in the case of Long Intermediate Trusts, 3.90% in the case  of
    Intermediate  Trusts, 3.00% in the case  of Short Intermediate Trusts and  2.50% in the case of  Short Term Trusts. In single
    transactions involving 500 Units or more, the sales charge is reduced. (See Section 6.)
</TABLE>
 
                                       84
<PAGE>
GENERAL TRUST INFORMATION
 
    An  investment in Units of any Trust should be made with an understanding of
the risks that  such an investment  may entail.  As set forth  in the  portfolio
summaries above, the Trusts may contain or be concentrated in one or more of the
types  of  bonds  discussed  below.  The  following  paragraphs  discuss certain
circumstances which may adversely affect the ability of issuers of Bonds held in
the portfolio of a Trust  to make payment of  principal and interest thereon  or
which  may adversely affect the  ratings of such Bonds;  with respect to Insured
Trusts, however, because  of the  insurance obtained by  the Sponsor  or by  the
issuers  of  the Bonds,  such  changes should  not  adversely affect  an Insured
Trust's receipt of principal and interest, the Standard & Poor's AAA or  Moody's
Aaa  ratings of  the Bonds  in the  Insured Trust  portfolio, or  the Standard &
Poor's AAA rating of the Units of each such Insured Trust.
 
    HEALTH FACILITY  OBLIGATIONS.    Some  of  the  Bonds  in  a  Trust  may  be
obligations  of issuers  whose revenues  are derived  from services  provided by
hospitals or other health care  facilities, including nursing homes. Ratings  of
bonds  issued  for health  care facilities  are  sometimes based  on feasibility
studies that contain projections of  occupancy levels, revenues and expenses.  A
facility's  gross  receipts and  net income  available for  debt service  may be
affected by future events and  conditions including, among other things,  demand
for  services, the ability of the facility  to provide the services required, an
increasing shortage of qualified nurses or a dramatic rise in nursing  salaries,
physicians'  confidence  in  the  facility,  management  capabilities,  economic
developments in  the service  area, competition  from other  similar  providers,
efforts  by  insurers  and  governmental agencies  to  limit  rates, legislation
establishing state rate-setting agencies,  expenses, government regulation,  the
cost  and possible unavailability of  malpractice insurance, and the termination
or restriction of governmental  financial assistance, including that  associated
with  Medicare, Medicaid and other similar  third party payor programs. Medicare
reimbursements are currently calculated on a prospective basis and are not based
on a provider's actual costs. Such method of reimbursement may adversely  affect
reimbursements to hospitals and other facilities for services provided under the
Medicare  program and thereby may have an  adverse effect on the ability of such
institutions to satisfy  debt service requirements.  In the event  of a  default
upon  a bond  secured by hospital  facilities, the limited  alternative uses for
such facilities may result  in the recovery upon  such collateral not  providing
sufficient funds to fully repay the bonds.
 
    Certain  hospital  bonds  provide for  redemption  at par  upon  the damage,
destruction or  condemnation of  the  hospital facilities  or in  other  special
circumstances.
 
    HOUSING  OBLIGATIONS.  Some  of the Bonds  in a Trust  may be obligations of
issuers whose  revenues are  primarily derived  from mortgage  loans to  housing
projects  for  low  to  moderate  income  families.  Such  issues  are generally
characterized by mandatory redemption at par  or, in the case of original  issue
discount  bonds, accreted  value in  the event of  economic defaults  and in the
event of a failure of the operator of a project to comply with certain covenants
as to the operation of the project. The failure of such operator to comply  with
certain  covenants related  to the tax-exempt  status of interest  on the Bonds,
such as provisions requiring that a  specified percentage of units be rented  or
available for rental to low or moderate income families, potentially could cause
interest on such Bonds to be subject to Federal income taxation from the date of
issuance of the Bonds. The ability of such issuers to make debt service payments
will   be  affected  by  events  and  conditions  affecting  financed  projects,
including, among other  things, the  achievement and  maintenance of  sufficient
occupancy  levels and adequate  rental income, employment  and income conditions
prevailing in local labor markets, increases  in taxes, utility costs and  other
operating  expenses, the managerial ability of project managers, changes in laws
and
 
                                      A-1
<PAGE>
governmental  regulations,  the  appropriation  of  subsidies,  and  social  and
economic  trends affecting  the localities  in which  the projects  are located.
Occupancy of such housing projects may be adversely affected by high rent levels
and income limitations imposed under Federal and state programs.
 
    SINGLE FAMILY MORTGAGE REVENUE BONDS.  Some  of the Bonds in a Trust may  be
single  family  mortgage revenue  bonds,  which are  issued  for the  purpose of
acquiring from originating financial institutions notes secured by mortgages  on
residences located within the issuer's boundaries and owned by persons of low or
moderate  income. Mortgage loans  are generally partially  or completely prepaid
prior to  their final  maturities as  a result  of events  such as  sale of  the
mortgaged  premises, default, condemnation or casualty loss. Because these bonds
are subject to extraordinary mandatory redemption in whole or in part from  such
prepayments of mortgage loans, a substantial portion of such bonds will probably
be  redeemed prior to their scheduled maturities or even prior to their ordinary
call dates. Extraordinary mandatory redemption without premium could also result
from the  failure of  the originating  financial institutions  to make  mortgage
loans in sufficient amounts within a specified time period. The redemption price
of  such issues  may be  more or  less than  the offering  price of  such bonds.
Additionally, unusually high rates of  default on the underlying mortgage  loans
may  reduce revenues available  for the payment  of principal of  or interest on
such mortgage revenue bonds. Single  family mortgage revenue bonds issued  after
December 31, 1980 were issued under Section 103A of the Internal Revenue Code of
1954,  as amended, or  Section 143 of  the Internal Revenue  Code of 1986, which
Sections contain certain  requirements relating to  the use of  the proceeds  of
such  bonds in  order for the  interest on  such bonds to  retain its tax-exempt
status. In each  case, the issuer  of the  bonds has covenanted  to comply  with
applicable  requirements and bond  counsel to such issuer  has issued an opinion
that the interest on the bonds is exempt from Federal income tax under  existing
laws   and  regulations.  There  can  be   no  assurance  that  such  continuing
requirements will  be satisfied;  the failure  to meet  such requirements  could
cause  interest on the Bonds to be  subject to Federal income taxation, possibly
from the date of issuance of the Bonds.
 
    FEDERALLY ENHANCED  OBLIGATIONS.   Some of  the mortgages  which secure  the
various  health care or housing projects which underlie the previously discussed
Health Facility, Housing,  and Single Family  Mortgage Revenue Obligations  (the
"Obligations")  in a Trust may be  insured by the Federal Housing Administration
("FHA"). Under FHA  regulations, the  maximum insurable  mortgage amount  cannot
exceed  90%  of the  FHA's  estimated value  of  the project.  The  FHA mortgage
insurance does not constitute a guarantee of timely payment of the principal  of
and  interest on the Obligations. Payment  of mortgage insurance benefits may be
(1) less than the principal amount of Obligations outstanding or (2) delayed  if
disputes  arise as to  the amount of the  payment or if  certain notices are not
given to the FHA within  the prescribed time periods.  In addition, some of  the
previously  discussed Obligations may be secured by mortgage-backed certificates
guaranteed by the  Government National Mortgage  Association ("GNMA"), a  wholly
owned  corporate  instrumentality  of  the  United  States,  and/or  the Federal
National  Mortgage  Association  ("Fannie   Mae")  a  federally  chartered   and
stockholder-owed  corporation. GNMA and  Fannie Mae guarantee  timely payment of
principal and  interest  on the  mortgage-backed  certificates, even  where  the
underlying   mortgage  payments   are  not  made.   While  such  mortgage-backed
certificates are often pledged  to secure payment of  principal and interest  on
the  Obligations, timely payment of interest and principal on the Obligations is
not insured or guaranteed by  the United States, GNMA,  Fannie Mae or any  other
governmental  agency or  instrumentality. The  GNMA mortgage-backed certificates
constitute a general obligation  of the United States  backed by its full  faith
and  credit. The obligations of Fannie  Mae, including its obligations under the
Fannie Mae mortgage-backed securities, are obligations
 
                                      A-2
<PAGE>
solely of Fannie Mae and are not backed  by, or entitled to, the full faith  and
credit of the United States.
 
    INDUSTRIAL  REVENUE OBLIGATIONS.   Certain  of the Bonds  in a  Trust may be
industrial revenue bonds  ("IRBs"), including pollution  control revenue  bonds,
which  are  tax-exempt  securities  issued  by  states,  municipalities,  public
authorities or similar entities to  finance the cost of acquiring,  constructing
or improving various industrial projects. These projects are usually operated by
corporate entities. Issuers are obligated only to pay amounts due on the IRBs to
the  extent that funds are available from the unexpended proceeds of the IRBs or
receipts or revenues of the issuer  under an arrangement between the issuer  and
the  corporate operator of  a project. The arrangement  may be in  the form of a
lease, installment sale agreement, conditional sale agreement or loan agreement,
but in each case  the payments to  the issuer are designed  to be sufficient  to
meet  the payments  of amounts  due on  the IRBs.  Regardless of  the structure,
payment of IRBs is solely dependent  upon the creditworthiness of the  corporate
operator  of  the project  and,  if applicable,  corporate  guarantor. Corporate
operators or  guarantors may  be affected  by  many factors  which may  have  an
adverse  impact on  the credit  quality of  the particular  company or industry.
These include cyclicality of revenues and earnings, regulatory and environmental
restrictions, litigation  resulting  from  accidents  or  environmentally-caused
illnesses,  extensive competition  and financial deterioration  resulting from a
corporate restructuring pursuant to a leveraged buy-out, takeover or  otherwise.
Such  a restructuring may  result in the  operator of a  project becoming highly
leveraged which may have an impact on such operator's creditworthiness which  in
turn  would have  an adverse impact  on the  rating and/or market  value of such
Bonds. Further, the  possibility of  such a  restructuring may  have an  adverse
impact  on the market for and consequently  the value of such Bonds, even though
no actual takeover or other action is ever contemplated or effected. The IRBs in
a Trust may be subject to  special or extraordinary redemption provisions  which
may  provide for redemption  at par or,  in the case  of original issue discount
bonds, accreted value. The  Sponsor cannot predict the  causes or likelihood  of
the redemption of IRBs in a Trust prior to the stated maturity of such Bonds.
 
    ELECTRIC  UTILITY  OBLIGATIONS.    Some  of the  Bonds  in  a  Trust  may be
obligations of issuers  whose revenues are  primarily derived from  the sale  of
electric  energy. The problems  faced by such issuers  include the difficulty in
obtaining approval for timely  and adequate rate  increases from the  applicable
public  utility  commissions,  the difficulty  of  financing  large construction
programs, increased competition,  reductions in estimates  of future demand  for
electricity  in certain areas of the  country, the limitations on operations and
increased costs  and delays  attributable to  environmental considerations,  the
difficulty  of the capital  market in absorbing utility  debt, the difficulty in
obtaining fuel at reasonable prices and  the effect of energy conservation.  All
of  such issuers  have been  experiencing certain  of these  problems in varying
degrees. In addition, Federal, state and municipal governmental authorities  may
from  time to time review existing, and impose additional, regulations governing
the licensing, construction  and operation  of nuclear power  plants, which  may
adversely  affect the ability of the issuers of  certain of the Bonds in a Trust
to make payments of principal and/or interest on such Bonds.
 
    TRANSPORTATION FACILITY REVENUE BONDS.  Some of the Bonds in a Trust may  be
obligations  of issuers which  are payable from and  secured by revenues derived
from the ownership and operation of airports, public transit systems and  ports.
The  major portion of  an airport's gross operating  income is generally derived
from fees received  from airlines pursuant  to use agreements  which consist  of
annual  payments for airport  use, occupancy of  certain terminal space, service
fees and  leases. Airport  operating income  may therefore  be affected  by  the
ability  of the airlines to meet their obligations under the use agreements. The
air transport industry  is experiencing significant  variations in earnings  and
 
                                      A-3
<PAGE>
traffic,  due  to  increased  competition,  excess  capacity,  increased  costs,
deregulation, traffic constraints  and other factors,  and several airlines  are
experiencing  severe financial difficulties. In  particular, facilities with use
agreements involving airlines experiencing financial difficulty may experience a
reduction in revenue  due to the  possible inability of  these airlines to  meet
their  use  agreement obligations  because  of such  financial  difficulties and
possible bankruptcy.  The  Sponsor cannot  predict  what effect  these  industry
conditions  may have on airport revenues which  are dependent for payment on the
financial condition of the  airlines and their usage  of the particular  airport
facility.  Bonds that are secured primarily by the revenue collected by a public
transit system  typically are  additionally secured  by a  pledge of  sales  tax
receipts  collected  at  the state  or  local  level, or  of  other governmental
financial assistance. Transit system net revenues will be affected by variations
in  utilization,  which  in  turn  may  be  affected  by  the  degree  of  local
governmental  subsidization, demographic and  population shifts, and competition
from other  forms of  transportation; and  by increased  costs, including  costs
resulting  from previous deferrals of maintenance. Port authorities derive their
revenues primarily from fees imposed on ships using the facilities. The rate  of
utilization  of such facilities may fluctuate depending on the local economy and
on competition from  competing forms  of transportation  such as  air, rail  and
trucks.
 
    WATER  AND/OR SEWERAGE  OBLIGATIONS.  Some  of the  Bonds in a  Trust may be
obligations of issuers whose revenues are derived from the sale of water  and/or
sewerage services. Such Bonds are generally payable from user fees. The problems
of  such  issuers  include  the  ability  to  obtain  timely  and  adequate rate
increases, population decline resulting in  decreased user fees, the  difficulty
of  financing  large construction  programs, the  limitations on  operations and
increased costs  and delays  attributable to  environmental considerations,  the
increasing  difficulty of obtaining or discovering  new supplies of fresh water,
the effect  of  conservation  programs  and the  impact  of  "no-growth"  zoning
ordinances. All of such issuers have been experiencing certain of these problems
in varying degrees.
 
    UNIVERSITY  AND COLLEGE REVENUE OBLIGATIONS.   Some of the  Bonds in a Trust
may be  obligations of  issuers which  are, or  which govern  the operation  of,
colleges  and universities and  whose revenues are  derived mainly from tuition,
dormitory revenues,  grants and  endowments. General  problems of  such  issuers
include  the prospect of a declining  percentage of the population consisting of
"college" age  individuals,  possible  inability  to  raise  tuitions  and  fees
sufficiently  to cover increased  operating costs, the  uncertainty of continued
receipt of  Federal grants  and  state funding,  and government  legislation  or
regulations  which may adversely  affect the revenues or  costs of such issuers.
All of such issuers have been experiencing certain of these problems in  varying
degrees.
 
    BRIDGE AUTHORITY AND TOLLROAD OBLIGATIONS.  Some of the Bonds in a Trust may
be  obligations  of issuers  which derive  their payments  from bridge,  road or
tunnel toll revenues. The revenues of such an issuer could be adversely affected
by competition from toll-free vehicular bridges and roads and alternative  modes
of transportation. Such revenues could also be adversely affected by a reduction
in  the availability of fuel to motorists  or significant increases in the costs
thereof. Specifically, governmental regulations restricting the use of  vehicles
in  the New  York City  metropolitan area may  adversely affect  revenues of the
Triborough Bridge and Tunnel Authority.
 
    DEDICATED-TAX SUPPORTED  BONDS.    Some of  the  Bonds  in a  Trust  may  be
obligations of issuers which are payable from and secured by tax revenues from a
designated  source, which revenues are pledged  to secure the bonds. The various
types of  Bonds described  below differ  in structure  and with  respect to  the
rights of the bondholders to the underlying property. Each type of dedicated-tax
supported  Bond has distinct risks, only some  of which are set forth below. One
type of dedicated-tax supported Bond is secured by the incremental tax  received
on   either  real   property  or   on  sales   within  a   specifically  defined
 
                                      A-4
<PAGE>
geographical area; such tax generally will  not provide bondholders with a  lien
on  the underlying property or revenues. Another type of dedicated-tax supported
Bond is  secured by  a special  tax levied  on real  property within  a  defined
geographical  area in such a manner that the  tax is levied on those who benefit
from the  project; such  bonds typically  provide for  a statutory  lien on  the
underlying  property for unpaid  taxes. A third  type of dedicated-tax supported
Bond may be secured by a tax levied upon the manufacture, sale or consumption of
commodities or upon the license to pursue certain occupations or upon  corporate
privileges  within a taxing jurisdiction. As to any of these types of Bonds, the
ability of  the  designated  revenues  to satisfy  the  interest  and  principal
payments  on such  bonds may be  affected by  changes in the  local economy, the
financial success of the  enterprise responsible for the  payment of the  taxes,
the  value of  any property on  which taxes may  be assessed and  the ability to
collect such  taxes in  a timely  fashion. Each  of these  factors will  have  a
different affect on each distinct type of dedicated-tax supported bonds.
 
    MUNICIPAL LEASE BONDS.  Some of the Bonds in a Trust may be obligations that
are  secured  by lease  payments  of a  governmental  entity. Such  payments are
normally subject to  annual budget  appropriations of  the leasing  governmental
entity.  A governmental  entity that enters  into such a  lease agreement cannot
obligate future  governments to  appropriate  for and  make lease  payments  but
covenants  to take such action as is necessary to include any lease payments due
in its budgets and to make the appropriations therefor. A governmental  entity's
failure to appropriate for and to make payments under its lease obligation could
result  in insufficient funds  available for payment  of the obligations secured
thereby.
 
    ORIGINAL ISSUE  DISCOUNT BONDS  AND STRIPPED  OBLIGATIONS.   Certain of  the
Bonds  in a Trust may be original  issue discount bonds. These Bonds were issued
with nominal  interest rates  less than  the rates  then offered  by  comparable
securities  and as a consequence  were originally sold at  a discount from their
face, or par, values. This original  issue discount, the difference between  the
initial  purchase price and face value, is deemed under current law to accrue on
a daily basis and the accrued  portion is treated as tax-exempt interest  income
for  federal income tax purposes. On sale  or redemption, gain, if any, realized
in excess of the earned  portion of original issue  discount will be taxable  as
capital  gain. See "What is the Tax Status of Unitholders". The current value of
an original issue discount bond reflects the present value of its face amount at
maturity. In a stable interest rate environment, the market value of an original
issue discount bond would  tend to increase  more slowly in  early years and  in
greater increments as the bond approached maturity.
 
    Certain  of the original issue discount bonds  in a Trust may be zero coupon
bonds. Zero coupon bonds do not provide for the payment of any current interest;
the buyer receives only the right to receive a final payment of the face  amount
of  the bond at its maturity. The effect of  owning a zero coupon bond is that a
fixed yield is earned not only on  the original investment but also, in  effect,
on  all  discount  earned  during  the life  of  the  obligation.  This implicit
reinvestment of earnings at the same rate eliminates the risk of being unable to
reinvest the income on such obligation at a rate as high as the implicit  yield,
but  at the same time also eliminates the holder's ability to reinvest at higher
rates in  the  future.  For  this  reason, zero  coupon  bonds  are  subject  to
substantially  greater  price  fluctuations during  periods  of  changing market
interest rates  than are  securities  of comparable  quality that  pay  interest
currently.
 
    Original  issue discount bonds, including zero  coupon bonds, may be subject
to redemption at prices  based on the  issue price plus  the amount of  original
issue   discount  accreted  to  redemption   (the  "accreted  value")  plus,  if
applicable, some premium.  Pursuant to  such call provisions  an original  issue
discount  bond may be called prior to its maturity date at a price less than its
face value. See the  "Schedules of Investments" for  more information about  the
call provisions of portfolio Bonds.
 
                                      A-5
<PAGE>
    Certain of the Bonds in a Trust may be Stripped Obligations, which represent
evidences  of ownership  with respect  to either  the principal  amount of  or a
payment of interest on a tax-exempt  obligation. An obligation is "stripped"  by
depositing  it with  a custodian, which  then effects a  separation in ownership
between the bond and any interest payment which has not yet become payable,  and
issues evidences of ownership with respect to such constituent parts. A Stripped
Obligation  therefore has economic characteristics similar to zero coupon bonds,
as described above.
 
    Each Stripped Obligation has  been purchased at a  discount from the  amount
payable  at maturity. With respect to each Unitholder, the Internal Revenue Code
treats as "original issue discount" that portion of the discount which  produces
a yield to maturity (as of the date of purchase of the Unitholder's Units) equal
to  the lower of the coupon rate of interest on the underlying obligation or the
yield to maturity on the basis of  the purchase price of the Unitholder's  Units
which  is allocable to  each Stripped Obligation.  Original issue discount which
accrues with respect to a Stripped Obligation will be exempt from Federal income
taxation to the  same extent  as interest  on the  underlying obligations.  (See
Section 11, " What Is The Tax Status of Unitholders".)
 
    Unitholders  should consult their own tax advisers with respect to the state
and local tax consequences of owning  original issue discount bonds or  Stripped
Obligations.  Under applicable  provisions governing determination  of state and
local taxes, interest on original  issue discount bonds or Stripped  Obligations
may  be deemed to  be received in  the year of  accrual even though  there is no
corresponding cash payment.
 
4.  COMPOSITION OF TRUSTS
 
Each Trust initially consists  of delivery statements  relating to contracts  to
purchase Bonds (or of such Bonds) as are listed under "Schedules of Investments"
and,  thereafter, of  such Bonds as  may continue to  be held from  time to time
(including certain securities deposited in  the Trust in substitution for  Bonds
not delivered to the Trust or in exchange or substitution for Bonds upon certain
refundings),  together  with  accrued  and  undistributed  interest  thereon and
undistributed cash realized from the disposition of Bonds.
 
    "WHEN-ISSUED"  AND  "DELAYED  DELIVERY"  TRANSACTIONS.    The  contracts  to
purchase  Bonds delivered to  the Trustee represent an  obligation by issuers or
dealers to deliver  Bonds to the  Sponsor for deposit  in the Trusts.  Normally,
"regular  way"  contracts are  settled and  the Bonds  delivered to  the Trustee
within a relatively  short period  of time.  However, certain  of the  contracts
relate  to Bonds which have not been issued  as of the Date of Deposit and which
are commonly referred to  as "when issued"  or "when, as  and if issued"  Bonds.
Although  the Sponsor does not believe it is  likely, one or more of the issuers
of such Bonds might decide not to proceed with such offerings. If such Bonds, or
replacement bonds  described below,  are not  acquired by  a Trust  or if  their
delivery  is  delayed, the  Estimated Current  Returns  and Estimated  Long Term
Returns shown herein may be reduced.  Certain of the contracts for the  purchase
of  Bonds provide for delivery dates after  the date of settlement for purchases
made on  the  Date of  Deposit.  Interest on  such  "when issued"  and  "delayed
delivery"  Bonds accrues to the benefit of Unitholders commencing with the first
settlement date for the Units. However,  in the opinion of counsel,  Unitholders
who  purchase their Units prior to the date such Bonds are actually delivered to
the Trustee must reduce the  tax basis of their  Units for interest accruing  on
such  Bonds during the interval between their purchase of Units and the delivery
of the Bonds because such amounts constitute a return of principal. As a  result
of  such adjustment, the  Estimated Current Returns set  forth herein (which are
based on the Public Offering Price as of  the business day prior to the Date  of
Deposit)  may be  slightly lower than  Unitholders will receive  after the first
year, assuming the Portfolio does not change
 
                                      A-6
<PAGE>
and estimated annual expense does not vary from that set forth under  "Essential
Information  Regarding the  Trusts." Those  Bonds in  each Trust  purchased with
delivery dates after the date  of settlement for purchases  made on the Date  of
Deposit are so noted in the Schedules of Investments.
 
    LIMITED  REPLACEMENT OF CERTAIN BONDS.   Neither the Sponsor nor the Trustee
shall be liable in any  way for any default, failure  or defect in any Bond.  In
the  event of a failure to deliver any  Bond that has been purchased for a Trust
under a contract, including those  Bonds purchased on a  when, as and if  issued
basis  ("Failed Bonds"), the Sponsor is authorized under the Indenture to direct
the Trustee to acquire  other specified Bonds ("Replacement  Bonds") to make  up
the original corpus of the Trust. The Replacement Bonds must be purchased within
20  days after  delivery of notice  of the failed  contract and the  cost to the
Trust (exclusive  of  accrued interest)  may  not  exceed the  amount  of  funds
reserved  for the purchase of  the Failed Bonds. The  Replacement Bonds (i) must
satisfy the criteria previously described  for Bonds originally included in  the
Trust  and, with respect  to Bonds purchased  for a State  Trust, shall have the
benefit of an exemption from state taxation of interest to an extent equal to or
greater than that of  the Bonds they  replace, (ii) must  have a fixed  maturity
date  after the date of purchase of not  less than approximately 15 years in the
case of National or State Trusts, approximately  11 years in the case of a  Long
Intermediate  Trust, approximately 5 years in  the case of Intermediate or State
Intermediate Trusts, approximately 3 years in  the case of a Short  Intermediate
Trust  and approximately 1 year in the case of a Short Term Trust, but not later
than the maturity date of the Failed Bonds, (iii) must be acquired at a cost  to
the  Trust equal to the  cost of the same principal  amount of Bonds provided in
the failed contract and  have a current  return and yield  to maturity not  less
than the current return and yield to maturity of the Failed Bonds and (iv) shall
not  be "when,  as and if  issued" Bonds.  Whenever a Replacement  Bond has been
acquired for a  Trust, the Trustee  shall, within five  days after the  delivery
thereof,  mail or deliver a notice of such acquisition to all Unitholders of the
Trust involved. Once the original corpus  of the Trust is acquired, the  Trustee
will  have no power  to vary the investment  of the Trust;  i.e., the Trust will
have no managerial  power to  take advantage of  market variation  to improve  a
Unitholder's investment.
 
    To  the extent the right of  limited substitution described in the preceding
paragraph shall not  be utilized  to acquire  Replacement Bonds  for the  entire
principal amount of Failed Bonds, the Sponsor shall refund to all Unitholders of
the  Trust  involved the  sales  charge attributable  to  such Failed  Bonds not
replaced, and  the principal  and accrued  interest attributable  to such  Bonds
shall  be distributed  not more  than 30  days after  the determination  of such
failure or at such earlier time as  the Trustee in its sole discretion deems  to
be  in  the interest  of  the Unitholders.  Any  such accrued  interest  paid to
Unitholders will be paid by the Sponsor and, accordingly, will not be treated as
tax-exempt income. In the event Failed Bonds  in a Trust could not be  replaced,
the  Net Annual Interest Income per Unit for such Trust would be reduced and the
Estimated Current Return thereon might be lowered.
 
    SALE, MATURITY AND REDEMPTION OF BONDS.  Certain of the Bonds may from  time
to  time  under certain  circumstances be  sold  or redeemed  or will  mature in
accordance with their terms. The proceeds from  such events will be used to  pay
for   Units  redeemed  or   distributed  to  Unitholders   and  not  reinvested;
accordingly, no assurance can be given that  a Trust will retain for any  length
of time its present size and composition.
 
    All  of the Bonds in  each Trust are subject to  being called or redeemed in
whole or  in part  prior to  their stated  maturities pursuant  to the  optional
redemption  provisions described in  the "Schedules of  Investments" and in most
cases pursuant to sinking fund, special or extraordinary redemption  provisions.
A  bond  subject to  optional  call is  one which  is  subject to  redemption or
refunding   prior   to   maturity   at    the   option   of   the   issuer.    A
 
                                      A-7
<PAGE>
refunding  is a method by which a bond issue is redeemed, at or before maturity,
by the proceeds of a new bond  issue. A bond subject to sinking fund  redemption
is  one  which  is  subject to  partial  call  from  time to  time  from  a fund
accumulated for  the scheduled  retirement of  a portion  of an  issue prior  to
maturity.  Special  or  extraordinary  redemption  provisions  may  provide  for
redemption of  all or  a portion  of an  issue upon  the occurrence  of  certain
circumstances  related to  defaults or  unanticipated changes  in circumstances.
Events that may  permit or require  the special or  extraordinary redemption  of
bonds include, among others: substantial damage to or destruction of the project
for  which the proceeds  of the bonds were  used; exercise by  a local, state or
federal governmental  unit  of  its power  of  eminent  domain to  take  all  or
substantially  all of the project for which the proceeds of the bonds were used;
a final determination that the interest on the bonds is taxable; changes in  the
economic  availability  of raw  materials, operating  supplies or  facilities or
technological or other  changes which render  the operation of  the project  for
which  the proceeds of  the bonds were  used uneconomical; changes  in law or an
administrative or judicial decree which render the performance of the  agreement
under which the proceeds of the bonds were made available to finance the project
impossible  or  which  create  unreasonable burdens  or  which  impose excessive
liabilities, such as taxes, not imposed on the date the bonds are issued on  the
issuer  of the bonds or the user of the proceeds of the bonds; an administrative
or judicial decree  which requires the  cessation of a  substantial part of  the
operations  of  the  project  financed  with  the  proceeds  of  the  bonds;  an
overestimate of the costs of the project to be financed with the proceeds of the
bonds resulting in excess proceeds which may  be applied to redeem bonds; or  an
underestimate  of a source of funds securing the bonds resulting in excess funds
which may be applied to  redeem bonds. The Sponsor is  unable to predict all  of
the  circumstances which may result in such redemption of an issue of Bonds. See
the discussion of the  various types of bond  issues, above, for information  on
the  call provisions of such bonds,  particularly single family mortgage revenue
bonds.
 
    The exercise of redemption or call provisions will (except to the extent the
proceeds of the called Bonds are used to pay for Unit redemptions) result in the
distribution of  principal  and may  result  in a  reduction  in the  amount  of
subsequent  interest distributions;  it may  also affect  the current  return on
Units of the Trust involved. Redemption pursuant to optional call provisions  is
more  likely to  occur, and  redemption pursuant to  sinking fund  or special or
extraordinary redemption provisions may occur,  when the Bonds have an  offering
side  evaluation which  represents a  premium over  par. Redemption  pursuant to
optional call provisions  may be,  and redemption  pursuant to  sinking fund  or
special or extraordinary redemption provisions is likely to be, at a price equal
to the par value of the bonds without any premium (in the case of original issue
discount  bonds, such redemption is generally to be made at the issue price plus
the amount of original issue discount  accreted to the date of redemption;  such
price  is referred to herein  as "accreted value"). Because  Bonds may have been
valued at prices above or below par value or the then current accreted value  at
the  time Units were  purchased, Unitholders may  realize gain or  loss upon the
redemption of portfolio  Bonds. (See Sections  11 and 13  and the "Schedules  of
Investments.")
 
    CERTAIN  TAX  MATTERS;  LITIGATION.   Certain  of  the Bonds  in  each Trust
portfolio may be subject  to continuing requirements such  as the actual use  of
bond proceeds, manner of operation of the project financed from bond proceeds or
rebate  of excess  earnings on  bond proceeds that  may affect  the exemption of
interest on such  Bonds from Federal  income taxation. Although  at the time  of
issuance  of each  of the  Bonds in each  Trust an  opinion of  bond counsel was
rendered as to the exemption of interest on such obligations from Federal income
taxation, and the issuers covenanted  to comply with all requirements  necessary
to retain the tax-exempt status of the Bonds, there can be no assurance that the
 
                                      A-8
<PAGE>
respective  issuers  or  other obligors  on  such obligations  will  fulfill the
various continuing  requirements  established  upon issuance  of  the  Bonds.  A
failure to comply with such requirements may cause a determination that interest
on  such  obligations  is  subject  to  Federal  income  taxation,  perhaps even
retroactively from the  date of  issuance of  such Bonds,  thereby reducing  the
value of the Bonds and subjecting Unitholders to unanticipated tax liabilities.
 
    To  the best knowledge of the Sponsor,  there is no litigation pending as of
the Date of Deposit in respect of  any Bonds which might reasonably be  expected
to  have a  material adverse effect  on any of  the Trusts. It  is possible that
after the Date of Deposit, litigation may be initiated with respect to Bonds  in
any  Trust. Any  such litigation may  affect the  validity of such  Bonds or the
tax-exempt nature of the interest thereon,  but while the outcome of  litigation
of  such nature can never be entirely predicted, the opinions of bond counsel to
the issuer of  each Bond  on the  date of issuance  state that  such Bonds  were
validly issued and that the interest thereon is, to the extent indicated, exempt
from Federal income tax.
 
5.  WHY AND HOW ARE THE BONDS INSURED?
 
INSURANCE ON BONDS IN INSURED TRUSTS
 
Insurance  guaranteeing  the  timely payment,  when  due, of  all  principal and
interest on the Bonds in each Insured Trust has been obtained by the Sponsor  or
by  the  issuers or  underwriters  of Bonds  from  the Municipal  Bond Investors
Assurance Corporation (the "Insurer"). Some of  the Bonds in each Insured  Trust
may  be covered by a policy or policies  of insurance obtained by the issuers or
underwriters of  the  Bonds  from  Municipal  Bond  Insurance  Association  (the
"Association") or Bond Investors Guaranty Insurance Company ("BIG"). The Insurer
has  issued a policy or policies of insurance  covering each of the Bonds in the
Insured Trusts, each policy to remain in force until the payment in full of such
Bonds and whether or not the Bonds continue  to be held by an Insured Trust.  By
the  terms  of each  policy the  Insurer will  unconditionally guarantee  to the
holders or owners of the Bonds the payment, when due, required of the issuer  of
the  Bonds of an amount equal  to the principal of and  interest on the Bonds as
such payments shall become due but not be paid (except that in the event of  any
acceleration  of the due  date of principal  by reason of  mandatory or optional
redemption, default or otherwise, the payments  guaranteed will be made in  such
amounts  and  at  such times  as  would have  been  due  had there  not  been an
acceleration). The  Insurer will  be  responsible for  such payments,  less  any
amounts  received by the holders or owners of the Bonds from any trustee for the
bond issuers or  from any other  sources other than  the Insurer. The  Insurer's
policies  relating to small  industrial development bonds  and pollution control
revenue bonds also guarantee the full and complete payments required to be  made
by  or on behalf  of an issuer  of Bonds pursuant  to the terms  of the Bonds if
there occurs an event which results in the loss of the tax-exempt status of  the
interest  on such Bonds,  including principal, interest  or premium payments, if
any, as and when thereby required. The Insurer has indicated that its  insurance
policies  do not insure the payment of  principal or interest on bonds which are
not required to be paid by the issuer thereof because the bonds were not validly
issued; as  indicated  under  "What  is the  Tax  Status  of  Unitholders?"  the
respective  issuing authorities have received  opinions of bond counsel relating
to the valid issuance of each of the Bonds in the Insured Trusts. The  Insurer's
policy  also does not insure against non-payment  of principal of or interest on
the Bonds resulting from the insolvency, negligence or any other act or omission
of the trustee or other paying agent for the Bonds. The policy is not covered by
the Property/ Casualty Insurance  Security Fund specified in  Article 76 of  the
New  York  Insurance Law.  The policies  are  non-cancellable and  the insurance
premiums have been fully paid on or
 
                                      A-9
<PAGE>
prior to the Date  of Deposit, either by  the Sponsor or, if  a policy has  been
obtained by a Bond issuer, by such issuer.
 
    Upon  notification from  the trustee  for any bond  issuer or  any holder or
owner of the Bonds or coupons that such trustee or paying agent has insufficient
funds to pay any  principal or interest  in full when due,  the Insurer will  be
obligated  to deposit funds  promptly with State Street  Bank and Trust Company,
N.A., New York, New York, as fiscal  agent for the Insurer, sufficient to  fully
cover the deficit. If notice of nonpayment is received on or after the due date,
the  Insurer will provide for payment  within one business day following receipt
of the notice. Upon payment  by the Insurer of  any Bonds, coupons, or  interest
payments,  the Insurer shall succeed  to the rights of  the owner of such Bonds,
coupons or interest payments with respect thereto.
 
    The Insurer is the principal operating subsidiary of MBIA, Inc., a New  York
Stock  Exchange listed company. MBIA, Inc. is  not obligated to pay the debts of
or claims against the  Insurer. The Insurer is  a limited liability  corporation
rather  than a  several liability association.  The Insurer is  domiciled in the
State of New York and licensed to do business in all 50 states, the District  of
Columbia and the Commonwealth of Puerto Rico.
 
    As  of December  31, 1992  the Insurer had  admitted assets  of $2.6 billion
(audited), total liabilities of  $1.7 billion (audited),  and total capital  and
surplus  of  $896  million  (audited) determined  in  accordance  with statutory
accounting  practices   prescribed   or  permitted   by   insurance   regulatory
authorities.  As of December 31,  1993, the Insurer had  admitted assets of $3.1
billion (audited),  total  liabilities  of $2.1  billion  (audited),  and  total
capital  and surplus  of $978  million (audited)  determined in  accordance with
statutory accounting practices prescribed  or permitted by insurance  regulatory
authorities.  Copies of the Insurer's year  end financial statements prepared in
accordance with statutory accounting practices  are available from the  Insurer.
The address of the Insurer is 113 King Street, Armonk, New York 10504.
 
    Effective  December 31, 1989, MBIA Inc.  acquired Bond Investors Group, Inc.
On January 5, 1990, the  Insurer acquired all of  the outstanding stock of  Bond
Investors  Group, Inc., the parent of BIG,  now known as MBIA Insurance Corp. of
Illinois. Through a reinsurance agreement, BIG has ceded all of its net  insured
risks,  as well as its unearned premium and contingency reserves, to the Insurer
and the Insurer has reinsured BIG's net outstanding exposure.
 
    Each insurance company comprising the Association will be severally and  not
jointly  obligated  under the  Association  policy in  the  following respective
percentages:  The  AEtna  Casualty  and  Surety  Company,  33%;  Fireman's  Fund
Insurance  Company, 30%; The  Travelers Indemnity Company,  15%; AEtna Insurance
Company (now  known  as CIGNA  Property  and  Casualty Company),  12%;  and  The
Continental  Insurance Company, 10%.  As a several  obligor, each such insurance
company will be  obligated only to  the extent  of its percentage  of any  claim
under  the  Association policy  and  will not  be  obligated to  pay  any unpaid
obligation of  any other  member of  the Association.  Each insurance  company's
participation is backed by all of its assets. However, each insurance company is
a  multiline insurer involved in several lines of insurance other than municipal
bond insurance, and the assets of each insurance company also secure all of  its
other insurance policy and surety bond obligations.
 
    The  following table sets forth certain unaudited financial information with
respect  to  the  five  insurance  companies  comprising  the  Association.  The
statistics, which have been furnished by the Association, are as reported by the
insurance  companies  to  the  New  York  State  Insurance  Department  and  are
determined in accordance with statutory accounting principles. No representation
is   made    herein    as   to    the    accuracy   or    adequacy    of    such
 
                                      A-10
<PAGE>
information or as to the absence of material adverse changes in such information
subsequent  to  the date  thereof.  In addition,  these  numbers are  subject to
revision by the  New York State  Insurance Department which,  if revised,  could
either increase or decrease the amounts.
 
                      MUNICIPAL BOND INSURANCE ASSOCIATION
            FIVE MEMBER COMPANIES ASSETS AND POLICYHOLDERS' SURPLUS
                              AS OF JUNE 30, 1993.
                                (000's omitted)
 
<TABLE>
<CAPTION>
                                                             New York         New York         New York
                                                             Statutory        Statutory     Policyholders'
                                                              Assets         Liabilities        Surplus
                                                          ---------------  ---------------  ---------------
<S>                                                       <C>              <C>              <C>
The AEtna Casualty & Surety Company.....................  $     9,670,645  $     8,278,113   $   1,392,532
Fireman's Fund Insurance Company........................        6,571,313        4,880,776       1,690,537
The Travelers Indemnity Company.........................       10,194,126        8,280,211       1,913,915
CIGNA Property and Casualty Company (formerly AEtna
  Insurance Company)....................................        6,198,088        5,634,331         563,757
The Continental Insurance Company.......................        2,574,504        2,223,194         351,310
                                                          ---------------  ---------------  ---------------
        Total...........................................  $    35,208,676  $    29,296,625   $   5,912,051
                                                          ---------------  ---------------  ---------------
                                                          ---------------  ---------------  ---------------
</TABLE>
 
    Standard   &  Poor's  Corporation  rates  all  new  issues  insured  by  the
Association "AAA" Prime Grade.
 
    Moody's Investors Service rates all  bond issues insured by the  Association
"Aaa"  and  short term  loans  "MIG 1",  both designated  to  be of  the highest
quality.
 
    Each such rating should be evaluated  independently of any other rating.  No
application  has  been  made to  any  other  rating agency  in  order  to obtain
additional ratings  on the  Bonds.  The ratings  reflect the  respective  rating
agency's  current assessment of the creditworthiness  of the Association and its
ability to pay claims on its  policies of insurance. Any further explanation  as
to  the  significance  of  the  above ratings  may  be  obtained  only  from the
applicable rating agency.
 
    Moody's Investors Service rates all bond issues insured by the Insurer "Aaa"
and short-term loans "MIG 1," both designated to be of the highest quality.
 
    Standard & Poor's  Ratings Group,  a division  of McGraw  Hill ("Standard  &
Poor's") rates all new issues insured by the Insurer "AAA" Prime Grade."
 
    The  Moody's Investors  Service rating  of the  Insurer should  be evaluated
independently of the  Standard & Poor's  Corporation rating of  the Insurer.  No
application  has  been  made to  any  other  rating agency  in  order  to obtain
additional ratings  on the  Bonds.  The ratings  reflect the  respective  rating
agency's  current  assessment of  the creditworthiness  of  the Insurer  and its
ability to  pay  claims  on  its policies  of  insurance  (See  "Description  of
Ratings.")  Any further explanation as to  the significance of the above ratings
may be obtained only from the applicable rating agency.
 
    The above ratings are  not recommendations to buy,  sell or hold the  Bonds,
and  such ratings may  be subject to revision  or withdrawal at  any time by the
rating agencies. Any downward revision or  withdrawal of either or both  ratings
may have an adverse effect on the market price of the Bonds.
 
    Because  the insurance on the  Bonds will be effective  so long as the Bonds
are outstanding, such insurance  will be taken into  account in determining  the
market value of
 
                                      A-11
<PAGE>
the  Bonds  and therefore  some  value attributable  to  such insurance  will be
included in the value  of the Units  of the Insured  Trusts. The insurance  does
not, however, guarantee the market value of the Bonds or of the Units.
 
INSURANCE ON CERTAIN BONDS IN TRADITIONAL TRUSTS
 
    Insurance  guaranteeing the timely  payment, when due,  of all principal and
interest on certain Bonds in a Traditional  Trust may have been obtained by  the
Sponsor,  issuer or underwriter  of the particular Bonds  involved or by another
party. Such insurance, which  provides coverage substantially  the same as  that
obtained  with  respect  to  Bonds  in Insured  Trusts  as  described  above, is
effective so long as the insured Bond is outstanding and the insurer remains  in
business.  Insurance relates only  to the particular  Bond and not  to the Units
offered hereby or to their market value. Insured Bonds have received a rating of
"Aaa" by  Moody's Investors  Service, Inc.  and/or "AAA"  by Standard  &  Poor's
Corporation in recognition of such insurance.
 
    If  a Bond in  a Traditional Trust  is insured, the  Schedule of Investments
will identify the insurer. Such insurance will be provided by Financial Guaranty
Insurance  Company  ("FGIC"),  AMBAC   Indemnity  Corporation  ("AMBAC"),   Bond
Investors  Guaranty  Insurance  Company, now  known  as MBIA  Corp.  of Illinois
("BIG"),  Capital  Guaranty  Insurance  Company  ("CGIC"),  Financial   Security
Assurance,   Inc.   ("FSA"),   Municipal   Bond   Insurance   Association   (the
"Association"), Municipal  Bond  Investors  Assurance  Corporation  ("MBIA")  or
Connie  Lee Insurance Company  ("ConnieLee"). The Sponsor  to date has purchased
and presently  intends to  purchase insurance  for Bonds  in Traditional  Trusts
exclusively  from MBIA (see the preceding  disclosure regarding MBIA). There can
be no assurance  that any insurer  listed therein  will be able  to satisfy  its
commitments  in the  event claims  are made in  the future.  However, Standard &
Poor's Corporation has rated  the claims-paying ability  of each insurer  "AAA,"
and  Moody's Investors Service has rated all bonds insured by each such insurer,
except ConnieLee, "Aaa." Moody's Investor's  Service gives no ratings for  bonds
insured by ConnieLee.
 
    Because  any such insurance will  be effective so long  as the insured Bonds
are outstanding, such insurance  will be taken into  account in determining  the
market  value  of  such Bonds  and  therefore  some value  attributable  to such
insurance will be included in the value of the Units of the Trust that  includes
such  Bonds. The insurance does not, however,  guarantee the market value of the
Bonds or of the Units.
 
6.  HOW IS THE PUBLIC OFFERING PRICE DETERMINED?
 
The Public Offering Price of the Units  of each Trust is equal to the  Trustee's
determination  of the aggregate  OFFERING prices of  the Bonds deposited therein
(minus any  advancement  to the  principal  account of  the  Trust made  by  the
Trustee)  plus a sales charge of 5.152%  of the aggregate offering prices in the
case of National and  State Trusts, 4.439% of  the aggregate offering prices  in
the case of Long Intermediate Trusts, 4.058% of the aggregate offering prices in
the  case of Intermediate Trusts, 3.093% of the aggregate offering prices in the
case of Short Intermediate Trusts and 2.564% of the aggregate offering prices in
the case of Short  Term Trusts, in  each case adding to  the total thereof  cash
held  by the Trust,  if any, and dividing  the sum so obtained  by the number of
Units outstanding in the Trust.  This computation produces a gross  underwriting
profit  equal to 4.90% of the Public Offering  Price in the case of National and
State  Trusts,  4.25%  of  the  Public  Offering  Price  in  the  case  of  Long
Intermediate  Trusts,  3.90%  of  the  Public  Offering  Price  in  the  case of
Intermediate Trusts, 3.00%  of the Public  Offering Price in  the case of  Short
Intermediate  Trusts and 2.50% of the Public Offering Price in the case of Short
Term Trusts.
 
    The sales charge applicable to quantity purchases is reduced on a  graduated
scale  for sales to any purchaser  of at least $50,000 or  500 Units and will be
applied on whichever basis is more  favorable to the purchaser. For purposes  of
calculating the applicable sales
 
                                      A-12
<PAGE>
charge,  purchasers  who have  indicated their  intent  to purchase  a specified
amount of Units of any Trust described herein in the primary offering period  or
units  of  any other  series of  Nuveen  Tax-Exempt Unit  Trusts in  the primary
offering period by executing and delivering  a letter of intent to the  Sponsor,
which  letter of intent  must be in a  form acceptable to  the Sponsor and shall
have a  maximum duration  of thirteen  months,  will be  eligible to  receive  a
reduced  sales charge according  to the following  table based on  the amount of
intended  aggregate  purchases  as  expressed  in  the  letter  of  intent.   By
establishing  a letter of intent, a Unitholder agrees that the first purchase of
Units following the execution of  such letter of intent will  be at least 5%  of
the  total  amount  of  the  intended  aggregate  purchases  expressed  in  such
Unitholder's letter of intent. Further, through the establishment of the  letter
of intent, such Unitholder agrees that units representing 5% of the total amount
of  the intended purchases will be held in escrow by United States Trust Company
of New York pending  completion of these purchases.  All distributions on  units
held in escrow will be credited to such Unitholder's account. If total purchases
prior  to the  expiration of  the letter  of intent  period equal  or exceed the
amount specified in a  Unitholder's letter of intent,  the units held in  escrow
will  be transferred  to such Unitholder's  account. If the  total purchases are
less than the amount specified, the Unitholder involved must pay the Sponsor  an
amount  equal to the difference between the amounts paid for these purchases and
the amounts which  would have  been paid  if the  higher sales  charge had  been
applied.  If such Unitholder does  not pay the additional  amount within 20 days
after  written  request   by  the   Sponsor  or   the  Unitholder's   securities
representative,  the Sponsor will instruct the  Trustee to redeem an appropriate
number of the  escrowed units to  meet the required  payment. By establishing  a
letter  of intent, a Unitholder irrevocably  appoints the Sponsor as attorney to
give instructions to redeem any or all of such Unitholder's escrowed units, with
full power  of substitution  in the  premises. A  Unitholder or  his  securities
representative must notify the Sponsor whenever such Unitholder makes a purchase
of Units that he wishes to be counted towards the intended amount. Sales charges
during the primary offering period are as follows:
 
<TABLE>
<CAPTION>
                                                          National and State     Long Intermediate Trusts
                                                                Trusts                                       Intermediate Trusts
                                                       ------------------------  ------------------------  ------------------------
<S>                                                    <C>          <C>          <C>          <C>          <C>          <C>
                                                         Percent      Percent      Percent      Percent      Percent      Percent
                                                           of         of Net         of         of Net         of         of Net
                                                        Offering      Amount      Offering      Amount      Offering      Amount
                  Number of Units*                        Price      Invested       Price      Invested       Price      Invested
- -----------------------------------------------------  -----------  -----------  -----------  -----------  -----------  -----------
Less than 500........................................        4.90%       5.152%        4.25%       4.439%        3.90%       4.058%
500 but less than 1,000..............................        4.75        4.987         4.15        4.330         3.70        3.842
1,000 but less than 2,500............................        4.50        4.712         3.85        4.004         3.50        3.627
2,500 but less than 5,000............................        4.25        4.439         3.60        3.734         3.25        3.359
5,000 but less than 10,000...........................        3.50        3.627         3.35        3.466         3.00        3.093
10,000 but less than 25,000..........................        3.00        3.093         3.00        3.093         2.75        2.828
25,000 but less than 50,000..........................        2.50        2.564         2.50        2.564         2.50        2.564
50,000 or more.......................................        2.00        2.041         2.00        2.041         2.00        2.041
</TABLE>
 
<TABLE>
<CAPTION>
                                                          Short Intermediate
                                                                Trusts              Short Term Trusts
                                                       ------------------------  ------------------------
<S>                                                    <C>          <C>          <C>          <C>          <C>          <C>
                                                         Percent      Percent      Percent      Percent
                                                           of         of Net         of         of Net
                                                        Offering      Amount      Offering      Amount
                  Number of Units*                        Price      Invested       Price      Invested
- -----------------------------------------------------  -----------  -----------  -----------  -----------
Less than 500........................................        3.00%       3.093%        2.50%       2.564%
500 but less than 1,000..............................        2.80        2.881         2.30        2.354
1,000 but less than 2,500............................        2.60        2.670         2.10        2.145
2,500 but less than 5,000............................        2.35        2.407         1.85        1.885
5,000 but less than 10,000...........................        2.10        2.145         1.60        1.626
10,000 but less than 25,000..........................        1.85        1.885         1.35        1.368
25,000 but less than 50,000..........................        1.80        1.833         1.25        1.266
50,000 or more.......................................        1.50        1.523         1.15        1.163
</TABLE>
 
*Breakpoint  sales charges are computed both on  a dollar basis and on the basis
 of the number of Units purchased, using the equivalent of 500 Units to $50,000,
 2,500 Units to $250,000 etc., and will  be applied on that basis which is  more
 favorable to the purchaser.
 
                                      A-13
<PAGE>
    For  "secondary market"  sales the  Public Offering  Price per  Unit of each
Trust is determined by adding to the Trustee's determination of the BID price of
each Bond in the Trust  a sales charge determined  in accordance with the  table
set forth below based upon the number of years remaining to the maturity of each
such  Bond, adjusting  the total to  reflect the amount  of any cash  held in or
advanced to the principal account  of the Trust and  dividing the result by  the
number  of Units then outstanding. For  purposes of this calculation, Bonds will
be deemed to mature on  their stated maturity dates  unless: (a) the Bonds  have
been  called for redemption or funds or securities have been placed in escrow to
redeem them on  an earlier  call date,  in which case  such call  date shall  be
deemed to be the date upon which they mature; or (b) such Bonds are subject to a
"mandatory put," in which case such mandatory put date shall be deemed to be the
date upon which they mature.
 
   
    Pursuant to the terms of the Indenture, the Trustee may terminate a Trust if
the  net asset value of such Trust, as shown by any evaluation, is less than 20%
of the  original principal  amount of  the  Trust. In  the course  of  regularly
appraising  the  value of  Bonds  in each  Trust,  the Sponsor  will  attempt to
estimate the date on which a Trust's  value will fall below the 20% level  based
on anticipated bond events over a five year period, including maturities, escrow
calls  and  current  calls or  refundings,  assuming certain  market  rates. The
Sponsor intends from time to time to recommend that certain Trusts whose  values
have  fallen or are anticipated to fall  below the 20% level be terminated based
on certain criteria  which could adversely  affect the Trust's  diversification.
Once  the Sponsor has determined that a Trust's  value has or may fall below the
20% level within a five-year period, for purposes of computing the sales  charge
using the table set forth below, the maturity of each bond in such Trust will be
deemed  to be the earlier of the estimated termination date of the Trust, or the
actual date used  when pricing  the bond under  Municipal Securities  Rulemaking
Board rules and interpretations issued thereunder.
    
 
    The effect of this method of sales charge calculation will be that different
sales  charge rates will  be applied to  the various Bonds  in a Trust portfolio
based upon  the maturities  of  such Bonds,  in  accordance with  the  following
schedule.  As  shown, the  sales charge  on  Bonds in  each maturity  range (and
therefore the aggregate sales charge on the purchase) is reduced with respect to
purchases of at least $50,000 or 500 Units:
<TABLE>
<CAPTION>
                                                                  Amount of Purchase*
                             ---------------------------------------------------------------------------------------------
<S>                          <C>          <C>          <C>          <C>          <C>          <C>            <C>
                                            $50,000     $100,000     $250,000     $500,000     $1,000,000     $2,500,000
                                Under         to           to           to           to            to             to
Years to Maturity              $50,000      $99,999     $249,999     $499,999     $999,999     $2,499,999     $4,999,999
- ---------------------------  -----------  -----------  -----------  -----------  -----------  -------------  -------------
Less than 1................           0            0            0            0            0             0              0
1 but less than 2..........       1.523%       1.446%       1.369%       1.317%       1.215%        1.061%          .900%
2 but less than 3..........       2.041        1.937        1.833        1.729        1.626         1.420          1.225
3 but less than 4..........       2.564        2.433        2.302        2.175        2.041         1.781          1.546
4 but less than 5..........       3.093        2.961        2.828        2.617        2.459         2.175          1.883
5 but less than 7..........       3.627        3.433        3.239        3.093        2.881         2.460          2.165
7 but less than 10.........       4.167        3.951        3.734        3.520        3.239         2.828          2.489
10 but less than 13........       4.712        4.467        4.221        4.004        3.788         3.253          2.842
13 but less than 16........       5.263        4.988        4.712        4.439        4.167         3.627          3.169
16 or more.................       5.820        5.542        5.263        4.987        4.603         4.004          3.500
 
<CAPTION>
 
<S>                          <C>
 
                              $5,000,000
Years to Maturity               or more
- ---------------------------  -------------
Less than 1................            0
1 but less than 2..........         .750%
2 but less than 3..........        1.030
3 but less than 4..........        1.310
4 but less than 5..........        1.590
5 but less than 7..........        1.870
7 but less than 10.........        2.150
10 but less than 13........        2.430
13 but less than 16........        2.710
16 or more.................        3.000
</TABLE>
 
 *Breakpoint sales charges are computed both on a dollar basis and on the  basis
  of  the  number of  Units  purchased, using  the  equivalent of  500  Units to
  $50,000, 2,500 Units  to $250,000,  etc., and will  be applied  on that  basis
  which is more favorable to the purchaser.
 
    The  secondary market sales charges above are  expressed as a percent of the
net amount invested; expressed  as a percent of  the Public Offering Price,  the
maximum  sales charge on  any Trust, including one  consisting entirely of Bonds
with 16 years  or more to  maturity, would be  5.50% (5.820% of  the net  amount
invested).  For purposes of illustration, the sales charge on a Trust consisting
entirely of Bonds  maturing in 13  to 16 years  would be 5%  (5.263% of the  net
amount  invested); that on a Trust consisting entirely of Bonds maturing in five
to  seven  years   would  be  3.5%   (3.627%  of  the   net  amount   invested);
 
                                      A-14
<PAGE>
and that on a Trust consisting entirely of Bonds maturing in three to four years
would  be 2.5% (2.564% of the net  amount invested). The actual secondary market
sales charge included in the Public Offering Price of any particular Trust  will
depend on the maturities of the Bonds in the portfolio of such Trust.
 
    At  all  times while  Units are  being  offered for  sale, the  Sponsor will
appraise or cause to  be appraised daily  the value of  the underlying Bonds  in
each  Trust as of 4:00 p.m. eastern time on each day on which the New York Stock
Exchange (the "Exchange") is normally open  and will adjust the Public  Offering
Price  of the Units commensurate with such appraisal. Such Public Offering Price
will be effective for all orders received by a dealer or the Sponsor at or prior
to 4:00 p.m. eastern time on each such day. Orders received after that time,  or
on a day when the Exchange is closed for a scheduled holiday or weekend, will be
held until the next determination of price.
 
    As  more fully set forth  in Section 8, accrued  interest from the preceding
Record Date to, but not including, the settlement date of the transaction  (five
business  days after  purchase) will  be added to  the Public  Offering Price to
determine the purchase price of Units.
 
    The above graduated  sales charges  will apply  on all  purchases of  Nuveen
investment  company  securities on  any one  day  by the  same purchaser  in the
amounts stated, and for this purpose purchases of this Series will be aggregated
with concurrent  purchases of  any other  Series or  of shares  of any  open-end
management  investment company of which the Sponsor is principal underwriter and
with respect to the purchase of which a sales charge is imposed.
 
    Purchases by or for the account of  an individual and his or her spouse  and
children  under 21 years of  age will be aggregated  to determine the applicable
sales charge. The graduated  sales charges are also  applicable to a trustee  or
other  fiduciary  purchasing  securities for  a  single trust  estate  or single
fiduciary account.
 
    Units may be purchased at the  Public Offering Price without a sales  charge
by officers or directors and by bona fide, full-time employees of Nuveen, Nuveen
Advisory Corp., Nuveen Institutional Advisory Corp. and The John Nuveen Company,
including  in each case these individuals and their immediate family members (as
defined above).
 
    The initial or primary Public Offering Price  of the Units in each Trust  is
based upon a pro rata share of the OFFERING prices per Unit of the Bonds in such
Trust  plus the  applicable sales charge.  The secondary  market Public Offering
Price of each Trust is based upon a pro rata share of the BID prices per Unit of
the Bonds in such Trust plus the applicable sales charge. The OFFERING prices of
Bonds in a Trust may be expected to average approximately 1% to 2% more than the
BID prices of such Bonds  in the case of  National, Long Intermediate and  State
Trusts,  3/4%  to 1  1/2% in  the  case of  Intermediate and  Short Intermediate
Trusts, and  1/2% to  3/4% in  the case  of Short  Term Trusts.  The  difference
between the bid side evaluation and the offering side evaluation of the Bonds in
each  Trust on the  business day prior  to the Date  of Deposit is  shown in the
discussion of each Trust portfolio.
 
    Whether or not Units are being offered for sale, the Sponsor will  determine
the aggregate value of each Trust as of 4:00 p.m. eastern time: (i) on each June
30 or December 31 (or, if such date is not a business day, the last business day
prior  thereto), (ii) on any day on which  a Unit is tendered for redemption (or
the next succeeding business day  if the date of  tender is a non-business  day)
and (iii) at such other times as may be necessary. For this purpose, a "business
day" shall be any day on which the Exchange is normally open. (See Section 16.)
 
                                      A-15
<PAGE>
7.  MARKET FOR UNITS
 
During  the  initial public  offering period,  the Sponsor  intends to  offer to
purchase Units of each  Trust at a  price equivalent to the  pro rata share  per
Unit  of the OFFERING prices of the Bonds in such Trust (plus accrued interest).
Afterward, although  it  is not  obligated  to do  so,  the Sponsor  intends  to
maintain  a secondary  market for  Units of  each Trust  at its  own expense and
continuously to offer  to purchase  Units of each  Trust at  prices, subject  to
change  at  any time,  which  are based  upon  the BID  prices  of Bonds  in the
respective portfolios of the Trusts. If the supply of Units of any of the Trusts
of this Series exceeds  demand, or for some  other business reason, the  Sponsor
may discontinue purchases of Units of such Trust at such prices. UNITHOLDERS WHO
WISH  TO DISPOSE OF THEIR UNITS SHOULD INQUIRE OF THE TRUSTEE OR THEIR BROKER AS
TO THE  CURRENT  REDEMPTION PRICE  (SEE  SECTION  19). In  connection  with  its
secondary  marketmaking activities, the Sponsor may from time to time enter into
secondary market  joint  account  agreements with  other  brokers  and  dealers.
Pursuant to such an agreement the Sponsor will purchase Units from the broker or
dealer at the bid price and will place the Units into a joint account managed by
the  Sponsor; sales from  the account will  be made in  accordance with the then
current prospectus and the Sponsor and  the broker or dealer will share  profits
and  losses in  the joint account  in accordance  with the terms  of their joint
account agreement.
 
    Certificates, if any, for Units are  delivered to the purchaser as  promptly
after  the date of settlement (five business days after purchase) as the Trustee
can complete the mechanics of registration. Normally, Certificates, if any,  are
mailed  by  the  Trustee within  48  hours after  registration  instructions are
received. Purchasers of Units to whom Certificates are issued will be unable  to
exercise  any right of redemption until they have received their Certificates as
tender of the Certificate, properly endorsed for transfer. (See Section 19.)
 
    Each Unit  of each  respective Trust  initially offered  by this  Prospectus
represents  that fractional  undivided interest  in such  Trust as  is set forth
under "Essential Information Regarding the Trusts." To the extent that any Units
of any Trust are  redeemed by the  Trustee, the aggregate  value of the  Trust's
assets  will decrease by  the amount paid  to the redeeming  Unitholder, but the
fractional undivided  interest  of  each  unredeemed Unit  in  such  Trust  will
increase  proportionately. The  Sponsor will  initially, and  from time  to time
thereafter, hold Units in connection with their offering.
 
8.  WHAT IS ACCRUED INTEREST?
 
Accrued interest is the accumulation of unpaid interest on a bond from the  last
day  on which  interest thereon  was paid.  Interest on  Bonds in  each Trust is
accounted for daily on an accrual basis. For this reason, the purchase price  of
Units  of a Trust will  include not only the Public  Offering Price but also the
proportionate share  of accrued  interest to  the date  of settlement.  Interest
accrues  to the  benefit of Unitholders  commencing with the  settlement date of
their purchase transaction.
 
    Accrued interest does not include accrual of original issue discount on zero
coupon bonds, Stripped Obligations or other original issue discount bonds.  (See
"Summary  of Portfolios--General Trust Information" and  "What Is The Tax Status
of Unitholders.")
 
    In an effort to reduce the  amount of accrued interest that investors  would
have  to pay in addition to the Public Offering Price, the Trustee has agreed to
advance to each Trust the amount of accrued interest due on the Bonds as of  the
Date  of Deposit (which has been designated  the first Record Date for all plans
of distribution).  This accrued  interest will  be paid  to the  Sponsor as  the
holder  of record of  all Units on  the Date of  Deposit. Consequently, when the
Sponsor sells Units of a  Trust, the amount of accrued  interest to be added  to
the  Public Offering Price to determine the  purchase price of the Units of such
Trust purchased by an investor will include only accrued interest from the  Date
of Deposit to, but
 
                                      A-16
<PAGE>
not  including, the date of settlement of the investor's purchase (five business
days after purchase), less any distributions from the related Interest  Account.
The Trustee will recover its advancements (without interest or other cost to the
Trusts) from interest received on the Bonds deposited in each Trust.
 
    The  Trustee has no  cash for distribution to  Unitholders until it receives
interest payments on the Bonds in  the Trusts. Since municipal bond interest  is
accrued  daily but  paid only  semi-annually, during  the initial  months of the
Trusts, the Interest  Accounts, consisting of  accrued but uncollected  interest
and  collected interest  (cash), will  be predominantly  the uncollected accrued
interest that is not available for distribution. However, due to advances by the
Trustee, the Trustee will provide a first distribution between approximately  30
and  60 days after the Date of Deposit. Assuming each Trust retains its original
size and composition  and expenses  and fees  remain the  same, annual  interest
collected  and distributed  will approximate  the estimated  Net Annual Interest
Income stated herein. However,  the amount of accrued  interest at any point  in
time  will  be greater  than  the amount  that  the Trustee  will  have actually
received and distributed to the Unitholders. Therefore, there will always remain
an item of  accrued interest  that is  included in  the Purchase  Price and  the
redemption price of the Units.
 
    Interest  is accounted  for daily and  a proportionate share  of accrued and
undistributed interest computed from the preceding  Record Date is added to  the
daily  valuation of each Unit  of each Trust. (See Sections  3 and 13.) As Bonds
mature, or are redeemed or sold,  the accrued interest applicable to such  bonds
is  collected and subsequently distributed  to Unitholders. Unitholders who sell
or redeem all or a portion of their Units will be paid their proportionate share
of the remaining accrued interest to, but not including, the fifth business  day
following the date of sale or tender.
 
9.  WHAT ARE ESTIMATED LONG TERM RETURN AND ESTIMATED CURRENT RETURN?
 
The  Estimated Long Term Return for each Trust is a measure of the return to the
investor earned over the  estimated life of the  Trust. The Estimated Long  Term
Return represents an average of the yields to maturity (or call) of the Bonds in
the  Trust's portfolio calculated in accordance  with accepted bond practice and
adjusted to reflect expenses  and sales charges.  Under accepted bond  practice,
tax-exempt  bonds are customarily offered to investors on a "yield price" basis,
which involves  computation of  yield to  maturity or  to an  earlier call  date
(whichever  produces the lower yield), and which takes into account not only the
interest payable  on the  bonds but  also  the amortization  or accretion  to  a
specified  date of any premium over or discount from the par (maturity) value in
the bond's  purchase  price. In  calculating  Estimated Long  Term  Return,  the
average  yield for  the Trust's  portfolio is  derived by  weighting each Bond's
yield by the market value of the Bond and by the amount of time remaining to the
date to which the Bond is priced. Once the average portfolio yield is  computed,
this  figure is then reduced to reflect estimated expenses and the effect of the
maximum  sales  charge  paid  by  investors.  The  Estimated  Long  Term  Return
calculation  does not take into account the effect of a first distribution which
may be less than a  regular distribution or may be  paid at some point after  30
days  (or a second distribution which may be less than a normal distribution for
Unitholders who choose quarterly or  semi-annual plans of distribution), and  it
also  does  not  take into  account  the  difference in  timing  of  payments to
Unitholders who choose quarterly or  semi-annual plans of distribution, each  of
which will reduce the return.
 
    Estimated  Current Return  is computed by  dividing the  Net Annual Interest
Income per Unit by the Public Offering Price. In contrast to Estimated Long Term
Return, Estimated Current Return does not reflect the amortization of premium or
accretion of discount, if
 
                                      A-17
<PAGE>
any, on the Bonds in the Trust's portfolio. Net Annual Interest Income per  Unit
is  calculated  by  dividing  the  annual interest  income  to  the  Trust, less
estimated expenses, by the number of Units outstanding.
 
    Net Annual Interest  Income per  Unit, used to  calculate Estimated  Current
Return,  will vary  with changes  in fees  and expenses  of the  Trustee and the
Evaluator and with the redemption, maturity, exchange or sale of Bonds. A  Trust
may  experience expenses and  portfolio changes different  from those assumed in
the calculation of Estimated  Long Term Return. There  thus can be no  assurance
that  the Estimated Current Returns or Estimated Long Term Returns quoted herein
will be realized in the future. Since both the Estimated Current Return and  the
Estimated  Long Term Return quoted  herein are based on  the market value of the
underlying Bonds on the  business day prior to  the Date of Deposit,  subsequent
calculations  of these performance measures will reflect the then current market
value of the underlying Bonds and may be higher or lower.
 
    A portion of the  monies received by  a Trust may be  treated, in the  first
year  only, as a return of principal due to the inclusion in the Trust portfolio
of "when-issued"  or  other  Bonds  having delivery  dates  after  the  date  of
settlement  for purchases  made on  the Date of  Deposit. A  consequence of this
treatment is that in the computation  of Estimated Current Return for the  first
year, such monies are excluded from Net Annual Interest Income and treated as an
adjustment  to the Public Offering  Price. (See "Essential Information Regarding
the Trusts" and Sections 4 and 11.)
 
    For a statement of the Net Annual Interest Income per Unit under the monthly
plan of  distribution,  and Estimated  Long  Term Yield  and  Estimated  Current
Returns based on the Public Offering Prices of the Trusts in this Series, all as
of  the day prior to  the Date of Deposit,  see "Essential Information Regarding
the Trusts."
 
10.  HOW WAS THE PRICE OF THE BONDS DETERMINED AT THE DATE OF DEPOSIT?
 
The prices at which the Bonds deposited in the Trusts would have been offered to
the public on the business day prior  to the Date of Deposit were determined  by
the  Trustee on the basis  of an evaluation of such  Bonds prepared by Kenny S&P
Evaluation Services, a  firm regularly  engaged in the  business of  evaluating,
quoting  or appraising comparable bonds. With respect to Bonds in Insured Trusts
and insured Bonds in Traditional Trusts, Kenny S&P Evaluation Services evaluated
the Bonds as so insured. (See Section 5).
 
    The amount by which  the Trustee's determination of  the OFFERING PRICES  of
the  Bonds deposited  in the Trusts  was greater or  less than the  cost of such
Bonds to  the  Sponsor was  PROFIT  OR LOSS  to  the Sponsor  exclusive  of  any
underwriting  profit.  (See Section  3.) The  Sponsor  also may  realize FURTHER
PROFIT OR  SUSTAIN  FURTHER LOSS  as  a result  of  fluctuations in  the  Public
Offering  Price of the Units. Cash, if  any, made available to the Sponsor prior
to the settlement date for a purchase  of Units, or prior to the acquisition  of
all  Portfolio securities by a Trust, may  be available for use in the Sponsor's
business, and may be of benefit to the Sponsor.
 
11.  WHAT IS THE TAX STATUS OF UNITHOLDERS?
 
At the  respective times  of issuance  of  the Bonds  opinions relating  to  the
validity  thereof and to  the exemption of interest  thereon from Federal income
tax were rendered  by bond  counsel to  the respective  issuing authorities.  In
addition,  with respect to  State Trusts, where applicable,  bond counsel to the
issuing authorities rendered opinions  as to the exemption  of interest on  such
Bonds,  when held by residents  of the state in which  the issuers of such Bonds
are located, from state income taxes and certain state or local intangibles  and
local  income taxes.  For a  discussion of  the tax  status of  State Trusts see
"Summary of  Portfolios--  Tax Status"  for  the respective  State  Trust.  (See
Sections 2 and 3.) Neither the Sponsor nor its
 
                                      A-18
<PAGE>
counsel  have made any special review for the Trusts of the proceedings relating
to the  issuance of  the Bonds  or of  the basis  for the  opinions rendered  in
connection therewith.
 
    Taxpayers  must  disclose  on  their  Federal  tax  returns  the  amount  of
tax-exempt  interest  earned  during  the  year.  Federally  tax-exempt  income,
including  income on Units  of the Trusts,  will be taken  into consideration in
computing the portion, if any, of social security benefits received that will be
included in a taxpayer's gross income subject to the Federal income tax.
 
    Gain realized on the sale or redemption of the Bonds by the Trustee or of  a
Unit  by  a Unitholder  is includable  in  gross income  for Federal  income tax
purposes, and may be  includable in gross income  for state tax purposes.  (Such
gain  does not include  any amounts received  in respect of  accrued interest or
accrued original  issue  discount,  if  any.) It  should  be  noted  that  under
provisions  of the Revenue Reconciliation Act  of 1993 (the "Tax Act") described
below that subject accretion of market discount on tax-exempt bonds to  taxation
as  ordinary income,  gain realized on  the sale  or redemption of  Bonds by the
Trustee or of Units by a Unitholder that would have been treated as capital gain
under prior law is treated as ordinary  income to the extent it is  attributable
to  accretion of market discount.  Market discount can arise  based on the price
the Trust pays  for the  Bonds or the  price a  Unitholder pays for  his or  her
Units.
 
    In the opinion of Chapman and Cutler, Counsel to the Sponsor, under existing
law:
 
    (1) the  Trusts  are not  associations taxable  as corporations  for Federal
        income tax purposes. Tax-exempt interest received by each of the  Trusts
        on  Bonds  deposited  therein  will  retain  its  status  as  tax-exempt
        interest, for Federal income tax  purposes, when received by the  Trusts
        and  when distributed  to the  Unitholders, except  that the alternative
        minimum tax and  environmental tax (the  "Superfund Tax") applicable  to
        corporate  Unitholders  may, in  certain  circumstances, include  in the
        amount on which  such taxes  are calculated  a portion  of the  interest
        income  received by  the Trust. See  "Certain Tax  Matters Applicable to
        Corporate Unitholders", below;
 
    (2) each Unitholder of a Trust is considered  to be the owner of a pro  rata
        portion  of such Trust under Subpart E, subchapter J of Chapter 1 of the
        Internal Revenue Code of 1986 (the "Code") and will have a taxable event
        when the Trust  disposes of  a Bond or  when the  Unitholder redeems  or
        sells  Units. Unitholders must  reduce the tax basis  of their Units for
        their share of accrued interest received by the Trust, if any, on  Bonds
        delivered  after  the  date the  Unitholders  pay for  their  Units and,
        consequently, such Unitholders may have  an increase in taxable gain  or
        reduction  in capital loss  upon the disposition of  such Units. Gain or
        loss upon the sale or redemption  of Units is measured by comparing  the
        proceeds  of  such sale  or redemption  with the  adjusted basis  of the
        Units. If the  Trustee disposes of  Bonds (whether by  sale, payment  at
        maturity,  redemption or otherwise),  gain or loss  is recognized to the
        Unitholder. The amount of any such gain or loss is measured by comparing
        the Unitholder's  pro  rata  share  of  the  total  proceeds  from  such
        disposition  with  the  Unitholder's  basis for  his  or  her fractional
        interest in  the asset  disposed of.  In the  case of  a Unitholder  who
        purchases Units, such basis (before adjustment for earned original issue
        discount   and  amortized  bond  premium,   if  any)  is  determined  by
        apportioning the  cost of  the  Units among  each  of the  Trust  assets
        ratably  according to value as of the  date of acquisition of the Units.
        The  tax  cost   reduction  requirements  of   said  Code  relating   to
        amortization  of bond premium  may, under some  circumstances, result in
        the Unitholder realizing a taxable gain  when his or her Units are  sold
        or redeemed for an amount equal to their original cost; and
 
                                      A-19
<PAGE>
    (3) any  amounts paid on defaulted Bonds  held by the Trustee under policies
        of insurance issued with respect to  such Bonds will be excludable  from
        Federal  gross income if, and to the same extent as, such interest would
        have been so excludable if paid by the respective issuer. Paragraph  (2)
        of   this  opinion   is  accordingly   applicable  to   policy  proceeds
        representing maturing interest.
 
In the opinion of Carter, Ledyard & Milburn, counsel to the Trustee, and, in the
absence of a New York Trust from the Series, special counsel for the Series  for
New York tax matters, under existing law:
 
        Under  the income tax laws of the State and City of New York, each Trust
    is not an association taxable as a corporation and the income of each  Trust
    will be treated as the income of the Unitholders.
 
    For  a summary of  each opinion of  special counsel to  the respective State
Trusts for state tax matters, see Section 3.
 
    ALL STATEMENTS IN THE PROSPECTUS CONCERNING EXEMPTION FROM FEDERAL, STATE OR
OTHER TAXES ARE THE OPINION OF COUNSEL AND ARE TO BE SO CONSTRUED.
 
    The redemption of Units in a Trust  by a Unitholder would result in each  of
the  remaining Unitholders of said Trust owning a greater proportionate interest
in the remaining assets  of said Trust. Although  present law does not  directly
address  this matter, it  would appear reasonable  that a remaining Unitholder's
tax basis in  his Units would  include his proportionate  share of any  proceeds
received by the Trust on the sale of bonds which were not distributed to him but
were  instead used by  the Trust to redeem  Units and that his  tax basis in the
remaining assets of the  Trust would accordingly be  increased by such share  of
proceeds, based on the relative fair market value of the remaining assets of the
Trust as of the date of such redemption.
 
    Sections  1288 and 1272 of the Code provide a complex set of rules governing
the accrual of original issue discount. These rules provide that original  issue
discount  accrues either on  the basis of  a constant compound  interest rate or
ratably over the term of the Bond, depending on the date the Bond was issued. In
addition, special  rules apply  if the  purchase  price of  a Bond  exceeds  the
original issue price plus the amount of original issue discount which would have
previously  accrued based upon its issue price (its "adjusted issue price"). The
application of these rules will also vary depending on the value of the Bond  on
the  date a Unitholder acquires his Units, and the price the Unitholder pays for
his Units. The  accrual of  tax-exempt original  issue discount  on zero  coupon
bonds  and other original issue discount bonds will result in an increase in the
Unitholder's basis in  such obligations and,  accordingly, in his  basis in  his
Units.
 
    The  Tax Act subjects tax-exempt  bonds to the market  discount rules of the
Code effective for  bonds purchased  after April  30, 1993.  In general,  market
discount is the amount (if any) by which the stated redemption price at maturity
exceeds an investor's purchase price (except to the extent that such difference,
if  any, is attributable to original issue  discount not yet accrued). Under the
Tax Act, accretion of market discount is taxable as ORDINARY INCOME; under prior
law, the  accretion had  been  treated as  capital  gain. Market  discount  that
accretes  while the Trust holds a Bond would be recognized as ordinary income by
the Unitholders when principal payments are  received on the Bond, upon sale  or
at  redemption (including early  redemption), or upon the  sale or redemption of
his or  her Units,  unless a  Unitholder elects  to include  market discount  in
taxable  income  as  it  accrues.  The market  discount  rules  are  complex and
Unitholders should consult their  tax advisors regarding  these rules and  their
application.
 
    The Internal Revenue Code provides that interest on indebtedness incurred or
continued  to purchase  or carry  obligations, the  interest on  which is wholly
exempt from Federal
 
                                      A-20
<PAGE>
income taxes, is not deductible. Because each Unitholder is treated for  Federal
income  tax purposes as the owner of a pro  rata share of the Bonds owned by the
applicable Trust, interest on borrowed funds used to purchase or carry Units  of
such  Trust will not be deductible for  Federal income tax purposes. Under rules
used by the  Internal Revenue Service  for determining when  borrowed funds  are
considered used for the purpose of purchasing or carrying particular assets, the
purchase  of Units may be considered to  have been made with borrowed funds even
though the borrowed funds  are not directly traceable  to the purchase of  Units
(however,  these rules generally  do not apply to  interest paid on indebtedness
incurred to  purchase  or  improve  a personal  residence).  Similar  rules  are
generally  applicable for state tax purposes. Special rules apply in the case of
certain financial  institutions that  acquire  Units. Investors  with  questions
regarding these issues should consult with their tax advisers.
 
    In  general,  each  issue of  bonds  in  the Trusts  is  subject  to certain
post-issuance requirements which must  be met in order  for the interest on  the
Bonds to be and remain exempt from Federal income taxation. Bond counsel to each
issuer generally has opined that, assuming continuing compliance by such issuers
with  certain covenants, interest on such Bonds  will continue to be exempt from
Federal income taxation (other than with respect to the application to corporate
Unitholders of the alternative  minimum tax or the  Superfund Tax, as  discussed
below).
 
    For  purposes of computing  the alternative minimum  tax for individuals and
corporations, interest on certain specified tax-exempt private activity bonds is
included as a preference item. The Trusts do not include any such bonds.
 
    For taxpayers  other  than corporations,  net  capital gains  are  presently
subject  to a maximum tax  rate of 28 percent. However,  it should be noted that
legislative proposals are introduced from time to time that affect tax rates and
could affect relative differences at which ordinary income and capital gains are
taxed.
 
    CERTAIN TAX  MATTERS APPLICABLE  TO CORPORATE  UNITHOLDERS. In  the case  of
certain  corporations, the alternative minimum tax  and the Superfund Tax depend
upon the corporation's alternative minimum taxable income ("AMTI"), which is the
corporation's taxable income  with certain  adjustments. One  of the  adjustment
items  used in computing AMTI and the Superfund Tax of a corporation (other than
an S corporation, Regulated Investment Company, Real Estate Investment Trust, or
REMIC) is an amount equal to 75%  of the excess of such corporation's  "adjusted
current  earnings" over an amount equal to its AMTI (before such adjustment item
and the  alternative  tax net  operation  loss deduction).  Although  tax-exempt
interest  received by each of the Trusts  on Bonds deposited therein will not be
included in the gross  income of corporations for  Federal income tax  purposes,
"adjusted current earnings" includes all tax-exempt interest, including interest
on all Bonds in the Trust and tax-exempt original issue discount.
 
    Corporate  Unitholders  are urged  to consult  their  own tax  advisers with
respect to the particular tax consequences  to them resulting under the  Federal
tax  law, including the corporate alternative minimum tax, the Superfund Tax and
the branch profits tax imposed by Section 884 of the Code.
 
    EXCEPT AS NOTED ABOVE AND IN SECTION  3, THE EXEMPTION OF INTEREST ON  STATE
AND  LOCAL  OBLIGATIONS FOR  FEDERAL INCOME  TAX  PURPOSES DOES  NOT NECESSARILY
RESULT IN EXEMPTION UNDER THE INCOME OR OTHER TAX LAWS OF ANY STATE OR CITY. THE
LAWS  OF  THE  SEVERAL  STATES  VARY  WITH  RESPECT  TO  THE  TAXATION  OF  SUCH
OBLIGATIONS.
 
12.  WHAT ARE NORMAL TRUST OPERATING EXPENSES?
 
No  annual advisory fee is charged the  Trusts by the Sponsor. The Sponsor does,
however, receive a fee  of $0.17 per  annum per $1,000  principal amount of  the
underlying Bonds in
 
                                      A-21
<PAGE>
each  Trust for regularly evaluating the  Bonds and for maintaining surveillance
over the portfolio. (See Section 16.)
 
    The Trustee receives for ordinary recurring services an annual fee for  each
plan  of  distribution for  each Trust  as set  forth in  "Essential Information
Regarding the Trusts."  Each annual fee  is per $1,000  principal amount of  the
underlying  Bonds in  a Trust for  that portion  of the Trust  that represents a
particular plan of distribution. The Trustee's fee may be periodically  adjusted
in response to fluctuations in short-term interest rates (reflecting the cost to
the  Trustee of advancing funds to a  Trust to meet scheduled distributions) and
may be further adjusted in accordance with the cumulative percentage increase of
the United  States Department  of  Labor's Consumer  Price Index  entitled  "All
Services  Less Rent" since the establishment of  the Trusts. The Trustee has the
use of funds, if any, being held in the Interest and Principal Accounts of  each
Trust  for  future distributions,  payment  of expenses  and  redemptions. These
Accounts are non-interest  bearing to  Unitholders. Pursuant  to normal  banking
procedures, the Trustee benefits from the use of funds held therein. Part of the
Trustee's  compensation for its services to the  Fund is expected to result from
such use of these funds.
 
    Premiums for the  policies of insurance  obtained by the  Sponsor or by  the
Bond issuers with respect to the Bonds in the Insured Trusts and with respect to
insured  Bonds in Traditional Trusts have been paid in full prior to the deposit
of the Bonds in the Trusts, and the value of such insurance has been included in
the evaluation of the Bonds in each Trust and accordingly in the Public Offering
Price of Units of each Trust. There  are no annual continuing premiums for  such
insurance.
 
    The Sponsor has borne all costs of creating and establishing the Trusts. The
following  are expenses  of the  Trusts and,  when paid  by or  are owed  to the
Trustee, are secured by  a lien on the  assets of the Trust  or Trusts to  which
such expenses are allocable: (1) the expenses and costs of any action undertaken
by  the  Trustee to  protect  the Trusts  and the  rights  and interests  of the
Unitholders; (2) all taxes and other governmental charges upon the Bonds or  any
part of the Trusts (no such taxes or charges are being levied or made or, to the
knowledge  of the Sponsor, contemplated); (3)  amounts payable to the Trustee as
fees  for  ordinary  recurring  services  and  for  extraordinary  non-recurring
services  rendered  pursuant to  the Indenture,  all disbursements  and expenses
including counsel fees  (including fees of  bond counsel which  the Trustee  may
retain)  sustained or incurred  by the Trustee in  connection therewith; and (4)
any losses or liabilities accruing to the Trustee without negligence, bad  faith
or  willful misconduct on  its part. The  Trustee is empowered  to sell Bonds in
order to  pay  these  amounts  if  funds are  not  otherwise  available  in  the
applicable Interest and Principal Accounts.
 
    The  Indenture requires each Trust  to be audited on  an annual basis at the
expense of the Trust by independent public accountants selected by the  Sponsor.
The  Trustee  shall not  be  required, however,  to cause  such  an audit  to be
performed if its cost to a Trust shall exceed $.05 per Unit on an annual  basis.
Unitholders  of a  Trust covered by  an audit may  obtain a copy  of the audited
financial statements upon request.
 
13.  WHEN ARE DISTRIBUTIONS MADE TO UNITHOLDERS?
 
Interest received by the Trustee on the Bonds in each Trust, including that part
of the proceeds of  any disposition of Bonds  which represents accrued  interest
and  including  any insurance  proceeds representing  interest due  on defaulted
Bonds, shall be credited to the "Interest  Account" of such Trust and all  other
moneys  received by the Trustee shall be  credited to the "Principal Account" of
such Trust.
 
    The pro rata share of  cash in the Principal Account  in each Trust will  be
computed as of each semi-annual Record Date and distributions to the Unitholders
as of such Record Date
 
                                      A-22
<PAGE>
will  be  made on  or shortly  after the  fifteenth day  of the  month. Proceeds
received from the disposition, including sale,  call or maturity, of any of  the
Bonds  and  all amounts  paid with  respect  to zero  coupon bonds  and Stripped
Obligations will be held  in the Principal  Account and either  used to pay  for
Units  redeemed  or  distributed on  the  Distribution Date  following  the next
semi-annual Record Date. The Trustee is not required to make a distribution from
the Principal Account of any Trust unless the amount available for  distribution
in such account equals at least ten cents per Unit.
 
    The pro rata share of the Interest Account in each Trust will be computed by
the  Trustee each month as of each Record Date and distributions will be made on
or shortly after the fifteenth day of the month to Unitholders of such Trust  as
of the Record Date who are entitled to distributions at that time under the plan
of  distribution chosen. Persons who purchase Units  between a Record Date and a
Distribution Date will receive their first distribution on the Distribution Date
following the next Record Date under the applicable plan of distribution.
 
    Purchasers of  Units  who desire  to  receive interest  distributions  on  a
monthly or quarterly basis may elect to do so at the time of purchase during the
initial  public offering  period. Those indicating  no choice will  be deemed to
have chosen the  semi-annual distribution  plan. All  Unitholders, however,  who
purchase  Units during the initial  public offering period and  who hold them of
record on the first Record Date will receive the first distribution of interest.
Thereafter, Record Dates for monthly distributions will be the first day of each
month; Record  Dates  for quarterly  distributions  will  be the  first  day  of
February,   May,  August  and   November;  and  Record   Dates  for  semi-annual
distributions will be the first day of May and November.
 
    Details of distributions  per Unit  of each  Trust under  the various  plans
based upon estimated Net Annual Interest Income at the Date of Deposit are shown
in  the tables appearing in  Section 3. The amount  of the regular distributions
will remain the same so long as  each Trust portfolio remains the same and  fees
and expenses remain the same, and will generally change when Bonds are redeemed,
mature or are sold or when fees and expenses increase or decrease.
 
    The  plan of  distribution selected  by a  Unitholder will  remain in effect
until changed.  Unitholders  purchasing  Units  in  the  secondary  market  will
initially  receive distributions  in accordance with  the election  of the prior
owner. Unitholders desiring to  change their plan of  distribution may do so  by
sending   a   written  notice   requesting   the  change,   together   with  any
Certificate(s), to  the  Trustee. The  notice  and any  Certificate(s)  must  be
received  by  the Trustee  not  later than  the  semi-annual Record  Date  to be
effective  as  of   the  semi-annual  distribution   following  the   subsequent
semi-annual  Record Date.  Unitholders are  requested to  make any  such changes
within 45 days prior to the applicable Record Date. Certificates should only  be
sent  by registered or certified mail to minimize the possibility of their being
lost or stolen. (See Section 18.) If no notice is received in proper form by the
Trustee, the Unitholder  will be  deemed to have  elected to  continue the  same
plan.
 
    As  of the first day of each month the Trustee will deduct from the Interest
Account of a Trust or, to the extent funds are not sufficient therein, from  the
Principal  Account of a  Trust, amounts needed  for payment of  expenses of such
Trust. The Trustee also may withdraw from said accounts such amount, if any,  as
it  deems necessary to establish a  reserve for any governmental charges payable
out of such Trust. Amounts  so withdrawn shall not be  considered a part of  the
Trust's  assets until such time  as the Trustee shall return  all or any part of
such amounts to the appropriate account.
 
    For the purpose  of minimizing  fluctuations in the  distributions from  the
Interest  Account of a Trust, the Trustee  is authorized to advance such amounts
as may be necessary to provide for interest distributions of approximately equal
amounts. The Trustee shall be
 
                                      A-23
<PAGE>
   
reimbursed, without interest, for any such  advances from funds in the  Interest
Account  of  such  Trust.  The  Trustee's  fee  takes  into  account  the  costs
attributable to  the outlay  of capital  needed  to make  such advances.  It  is
expected  that collections of interest, except during the first few months after
the Date of Deposit, will be in such  amounts that it will not be necessary  for
advancements to be made by the Trustee.
    
 
   
    The  Trustee  shall withdraw  from the  Interest  Account and  the Principal
Account of a  Trust such amounts  as may  be necessary to  cover redemptions  of
Units of such Trust by the Trustee. (See Section 19.)
    
 
    Funds  which are available for future distributions, redemptions and payment
of expenses are held in accounts  which are non-interest bearing to  Unitholders
and are available for use by the Trustee pursuant to normal banking procedures.
 
14.  ACCUMULATION PLAN
 
The  Sponsor, John Nuveen & Co.  Incorporated, is also the principal underwriter
of the  Nuveen Municipal  Bond Fund,  Inc. (the  "Bond Fund"),  Nuveen  Tax-Free
Reserves, Inc. ("Tax-Free Reserves"), Nuveen California Tax-Free Fund, Inc. (the
"California  Fund"),  Nuveen Tax-Free  Bond Fund,  Inc. ("Tax-Free  Bond Fund"),
Nuveen Insured Tax-Free  Bond Fund, Inc.  (the "Insured Bond  Fund") and  Nuveen
Tax-Free  Money  Market Fund,  Inc.  (the "Money  Market  Fund") and  the Nuveen
Multistate  Tax-Free  Trust  (the  "Multistate  Trust").  Each  of  these  funds
(together,  the  "Accumulation Funds")  is  an open-end,  diversified management
investment  company  into  which  Unitholders  may  choose  to  reinvest   Trust
distributions  automatically,  without any  sales  charge. (Reinvestment  in the
California Fund is available only  to Unitholders who are California  residents.
Reinvestment in the State Portfolios of the Tax-Free Bond Fund, the Insured Bond
Fund,  the  Money Market  Fund and  the  Multistate Trust  is available  only to
Unitholders who  are residents  of  the states  for  which such  portfolios  are
named.)  Unitholders may reinvest  both interest and  principal distributions or
principal distributions only. Each  Accumulation Fund has investment  objectives
which  differ in  certain respects from  those of  the Trusts and  may invest in
securities which would not be eligible for deposit in the Trusts. The investment
adviser to  each Accumulation  Fund  is Nuveen  Advisory Corp.,  a  wholly-owned
subsidiary  of  the  Sponsor. The  following  is  a general  description  of the
investment objectives  and  policies  of  each Accumulation  Fund.  For  a  more
detailed description, Unitholders should read the prospectus of the Accumulation
Fund in which they are interested.
 
THE BOND FUND
 
    The  Bond  Fund has  the  objective of  providing,  through investment  in a
professionally managed portfolio of long-term  municipal bonds, as high a  level
of  current interest income exempt from Federal income tax as is consistent with
preservation of capital. The Bond Fund  may include in its portfolio  tax-exempt
bonds  rated Baa or BBB or better by Moody's or Standard & Poor's, unrated bonds
which, in the  opinion of  the investment adviser,  have credit  characteristics
equivalent  to  bonds  rated  Baa  or  BBB  or  better,  and  certain  temporary
investments, including securities the interest income from which may be  subject
to Federal income tax.
 
TAX-FREE RESERVES
 
    Tax-Free  Reserves is a  "money market" fund that  includes in its portfolio
only obligations  maturing  within  one  year  from  the  date  of  acquisition,
maintains an average maturity of all investments of 120 days or less, values its
portfolio at amortized cost and seeks to maintain a net asset value of $1.00 per
share. It provides checkwriting and expedited wire redemption privileges for its
shareholders.    Tax-Free   Reserves    has   the    objective   of   providing,
 
                                      A-24
<PAGE>
through investment  in  a  professionally  managed  portfolio  of  high  quality
short-term  municipal obligations,  as high a  level of  current interest income
exempt from Federal income tax as is consistent with preservation of capital and
the maintenance of  liquidity. Tax-Free  Reserves may include  in its  portfolio
municipal obligations rated Aaa, Aa, MIG-1, VMIG-1 or Prime-1 by Moody's or AAA,
AA, SP-1 or A-1 by Standard & Poor's, unrated municipal obligations that, in the
opinion  of the  investment adviser,  have credit  characteristics equivalent to
obligations  rated  as  above,  tax-exempt   obligations  backed  by  the   U.S.
Government, and temporary investments that may be subject to Federal income tax.
 
THE CALIFORNIA FUND
 
    The  California Fund has  the objective of  providing, through investment in
professionally managed portfolios of California municipal obligations, as high a
level of current interest income exempt from both Federal and California  income
taxes as is consistent with the investment policies of each of the portfolios of
the  California Fund  and with  preservation of  capital. Each  portfolio of the
California Fund may include  temporary investments that may  be subject to  tax.
California Unitholders may reinvest in one of three portfolios of the California
Fund:  The Nuveen California Tax-Free Value  Fund, the Nuveen California Insured
Tax-Free Value Fund and the Nuveen California Tax-Free Money Market Fund.
 
    The Nuveen California  Tax-Free Value  Fund invests  primarily in  long-term
investment  grade California  tax-exempt bonds  (I.E., bonds  rated in  the four
highest categories by  Moody's or Standard  & Poor's or,  if unrated, that  have
equivalent credit characteristics). The Nuveen California Insured Tax-Free Value
Fund  invests primarily  in the  same type  of investments  as the  Special Bond
Portfolio, each of which is covered by insurance guaranteeing the timely payment
of principal  and  interest  or  is  backed by  a  deposit  of  U.S.  Government
securities.
 
    The  Nuveen  California  Tax-Free  Money Market  Fund  invests  primarily in
high-quality short term  California tax-exempt money  market instruments  (I.E.,
obligations  rated in the two highest categories by Moody's or Standard & Poor's
or, if unrated,  that have  equivalent credit  characteristics). This  portfolio
will  include  only  obligations  maturing  within one  year  from  the  date of
acquisition, will maintain an average maturity of all investments of 120 days or
less, will value its portfolio at amortized cost and will seek to maintain a net
asset value of $1.00 per share. The Nuveen California Tax-Free Money Market Fund
provides for an expedited wire redemption privilege.
 
THE TAX-FREE BOND FUND
 
    The Tax-Free Bond Fund consists  of the Nuveen Massachusetts Tax-Free  Value
Fund,  the Nuveen New York  Tax-Free Value Fund, the  Nuveen Ohio Tax-Free Value
Fund, and the Nuveen  New Jersey Tax-Free Value  Fund, which are each  available
for  reinvestment to Unitholders who  are residents of the  state for which such
portfolio is  named. The  Tax-Free Bond  Fund has  the objective  of  providing,
through  investment in a professionally managed portfolio of municipal bonds, as
high a level of current interest income exempt both from Federal income tax  and
from  the  income  tax  imposed  by  each  portfolio's  designated  state  as is
consistent with preservation of capital. The  Tax-Free Bond Fund may include  in
each  of its  portfolios tax-exempt  bonds rated Baa  or BBB  or better; unrated
bonds  which,  in   the  opinion   of  the  investment   adviser,  have   credit
characteristics  equivalent to  bonds rated  Baa or  BBB or  better; and certain
temporary investments, including securities the  interest income from which  may
be subject to Federal and state income tax.
 
THE INSURED BOND FUND
 
    The  Insured Bond Fund  consists of the Nuveen  Insured Municipal Bond Fund,
the Nuveen Massachusetts  Insured Tax-Free Value  Fund and the  Nuveen New  York
Insured Tax-
 
                                      A-25
<PAGE>
Free  Value Fund, which are each available for reinvestment to Unitholders. (The
Massachusetts and New York  Portfolios are available  only to those  Unitholders
who  are residents of the  state for which the  portfolio is named.) The Insured
Bond Fund has the objective  of providing, through investment in  professionally
managed  portfolios  of municipal  bonds, as  high a  level of  current interest
income exempt from both Federal income tax and, in the case of designated  state
portfolios, from the income tax imposed by each portfolio's designated state, as
is consistent with preservation of capital. The Insured Bond Fund may include in
each  of its portfolios the same type  of investments as the Tax-Free Bond Fund,
each of  which  is covered  by  insurance  guaranteeing the  timely  payment  of
principal and interest or is backed by a deposit of U.S. Government securities.
 
THE MONEY MARKET FUND
 
    The  Money Market Fund  consists of the  Nuveen Massachusetts Tax-Free Money
Market Fund and the Nuveen New York  Tax-Free Money Market Fund, which are  each
available  for reinvestment  to Unitholders who  are residents of  the state for
which such portfolio is named. The Money Market Fund includes in its  portfolios
only  obligations  maturing  within  one  year  from  the  date  of acquisition,
maintains an average  maturity of  120 days or  less, values  its portfolios  at
amortized  cost and seeks to maintain a net  asset value of $1.00 per share. The
Money Market  Fund  has  the  objective  of  providing,  through  investment  in
professionally   managed  portfolios   of  high   quality  short-term  municipal
obligations, as high a level of current interest income exempt both from Federal
income tax and from the income tax imposed by each portfolio's designated  state
as  is consistent with stability of  principal and the maintenance of liquidity.
The  Money  Market  Fund  may  include  in  each  of  its  portfolios  municipal
obligations  rated Aaa, Aa, MIG-1, MIG-2, VMIG-1,  VMIG-2, Prime 1 or Prime 2 by
Moody's or  AAA, AA,  SP-1,  SP-2, A-1  or A-2  by  Standard &  Poor's;  unrated
municipal  obligations  that, in  the opinion  of  the investment  adviser, have
credit characteristics equivalent to obligations  rated as above; and  temporary
investments that may be subject to Federal and state income tax.
 
THE MULTISTATE TRUST
 
    The Multistate Trust consists of the Nuveen Arizona Tax-Free Value Fund, the
Nuveen Florida Tax-Free Value Fund, the Nuveen Maryland Tax-Free Value Fund, the
Nuveen  Michigan Tax-Free Value Fund, the Nuveen New Jersey Tax-Free Value Fund,
the Nuveen Pennsylvania  Tax-Free Value Fund  and the Nuveen  Virginia Tax  Free
Value  Fund, which  are each available  for reinvestment to  Unitholders who are
residents of the state for which  such portfolio is named. The Multistate  Trust
has  the objective of providing, through  investment in a professionally managed
portfolio of municipal bonds, as high a level of current interest income  exempt
from  both regular Federal  income tax and the  applicable state personal income
tax as is  consistent with  preservation of  capital. The  Multistate Trust  may
include  in each  of its  portfolios tax-exempt  bonds rated  "Baa" or  "BBB" or
better, unrated bonds  which, in  the opinion  of the  investment advisor,  have
credit  characteristics  equivalent to  bonds rated  "baa"  or "BBB"  or better,
limited to  no more  than 20%  of  the Multistate  Trust's assets,  and  certain
temporary investments that may be subject to Federal and state income tax.
 
    Each  person who purchases Units of a  Trust may become a participant in the
Accumulation Plan and elect  to have his  or her distributions  on Units of  the
Trust  invested directly in shares of one of the Accumulation Funds. Reinvesting
Unitholders  may  select  any  interest  distribution  plan.  Thereafter,   each
distribution  of  interest  income  or  principal  on  the  participant's  Units
(principal only in  the case of  a Unitholder  who has chosen  to reinvest  only
principal  distributions) will, on the applicable distribution date, or the next
day on which the New  York Stock Exchange is  normally open ("business day")  if
the distribution date is
 
                                      A-26
<PAGE>
not  a business  day, automatically be  received by  Shareholder Services, Inc.,
transfer agent for each of the Accumulation Funds, on behalf of such participant
and applied  on that  date to  purchase  shares (or  fractions thereof)  of  the
Accumulation  Fund chosen at net asset value as computed as of 4:00 p.m. eastern
time on each such date. All distributions will be reinvested in the Accumulation
Fund chosen and no part  thereof will be retained  in a separate account.  These
purchases will be made without a sales charge.
 
    Shareholder Services, Inc. will mail to each participant in the Accumulation
Plan  a quarterly  statement containing a  record of  all transactions involving
purchases of Accumulation Fund shares (or fractions thereof) with Trust interest
distributions or as a result of reinvestment of Accumulation Fund dividends. Any
distribution of principal used to purchase  shares of an Accumulation Fund  will
be  separately  confirmed by  Shareholder Services,  Inc. Unitholders  will also
receive  distribution  statements  from   the  Trustee  detailing  the   amounts
transferred to their Accumulation Fund accounts.
 
    Participants  may at any time, by so notifying the Trustee in writing, elect
to change  the  Accumulation  Fund  into which  their  distributions  are  being
reinvested,  to change from principal only  reinvestment to reinvestment of both
principal and interest or vice versa, or to terminate their participation in the
Accumulation Plan altogether and receive future distributions on their Units  in
cash.  There will be no  charge or other penalty for  such change of election or
termination.
 
    The character of  Trust distributions  for income tax  purposes will  remain
unchanged even if they are reinvested in an Accumulation Fund.
 
15.  HOW DETAILED ARE REPORTS TO UNITHOLDERS?
 
The  Trustee  shall  furnish Unitholders  of  a  Trust in  connection  with each
distribution, a statement of the amount of  interest and, if any, the amount  of
other  receipts (received  since the preceding  distribution) being distributed,
expressed in each case  as a dollar  amount representing the  pro rata share  of
each Unit of a Trust outstanding and a year to date summary of all distributions
paid  on said Units.  Within a reasonable period  of time after  the end of each
calendar year, the Trustee shall furnish to  each person who at any time  during
the  calendar  year was  a registered  Unitholder  of a  Trust a  statement with
respect to  such  Trust  (i)  as to  the  Interest  Account:  interest  received
(including  amounts  representing  interest  received  upon  any  disposition of
Bonds), and, except  for any  State Trust, the  percentage of  such interest  by
states  in which the issuers  of the Bonds are  located, deductions for fees and
expenses of such Trust, redemption of Units and the balance remaining after such
distributions and deductions,  expressed in  each case  both as  a total  dollar
amount  and as  a dollar  amount representing  the pro  rata share  of each Unit
outstanding on the  last business  day of  such calendar  year; (ii)  as to  the
Principal  Account: the dates of  disposition of any Bonds  and the net proceeds
received therefrom (excluding  any portion representing  accrued interest),  the
amount  paid for purchase of Replacement  Bonds, the amount paid upon redemption
of Units, deductions for  payment of applicable taxes  and fees and expenses  of
the  Trustee, and the balance remaining  after such distributions and deductions
expressed both as a total dollar amount and as a dollar amount representing  the
pro  rata  share of  each  Unit outstanding  on the  last  business day  of such
calendar year;  (iii)  a  list  of  the Bonds  held  and  the  number  of  Units
outstanding  on the last business day of such calendar year; (iv) the Unit Value
based upon the last computation thereof made during such calendar year; and  (v)
amounts actually distributed during such calendar year from the Interest Account
and  from  the Principal  Account, separately  stated,  expressed both  as total
dollar amounts and  as dollar amounts  representing the pro  rata share of  each
Unit outstanding.
 
                                      A-27
<PAGE>
    Each  annual statement will reflect pertinent  information in respect of all
plans of distribution so that Unitholders may be informed regarding the  results
of other plans of distribution.
 
16.  UNIT VALUE AND EVALUATION
 
The  value of each  Trust is determined by  the Sponsor on the  basis of (1) the
cash on hand in the Trust or moneys  in the process of being collected, (2)  the
value  of the Bonds in  the Trust based on  the BID prices of  the Bonds and (3)
interest  accrued  thereon   not  subject  to   collection,  LESS  (1)   amounts
representing  taxes or governmental charges payable out of the Trust and (2) the
accrued expenses of the Trust. The result of such computation is divided by  the
number  of Units of such  Trust outstanding as of  the date thereof to determine
the per Unit value ("Unit Value") of  such Trust. The Sponsor may determine  the
value  of the Bonds in each Trust (1) on  the basis of current BID prices of the
Bonds obtained from dealers or brokers who customarily deal in bonds  comparable
to  those held by the Trust, (2) if bid  prices are not available for any of the
Bonds, on the basis of bid prices for comparable bonds, (3) by causing the value
of the Bonds to be determined by  others engaged in the practice of  evaluating,
quoting  or appraising comparable bonds or (4)  by any combination of the above.
Although the Unit Value of each Trust is  based on the BID prices of the  Bonds,
the Units are sold initially to the public at the Public Offering Price based on
the OFFERING prices of the Bonds.
 
    Because  the insurance obtained  by the Sponsor  or by the  issuers of Bonds
with respect to  the Bonds in  the Insured  Trusts and with  respect to  insured
Bonds  in Traditional Trusts is effective so long as such Bonds are outstanding,
such insurance will be  taken into account in  determining the bid and  offering
prices  of such  Bonds and therefore  some value attributable  to such insurance
will be included in the value of Units of Trusts that include such Bonds.
 
17.  HOW UNITS OF THE TRUSTS ARE DISTRIBUTED TO THE PUBLIC
 
John Nuveen & Co. Incorporated is the Sponsor and sole Underwriter of the Units.
It is  the  intention  of  the  Sponsor  to  qualify  Units  of  National,  Long
Intermediate,  Intermediate, Short Intermediate  and Short Term  Trusts for sale
under the laws of  substantially all of  the states, and  Units of State  Trusts
only in the state for which the Trust is named and selected other states.
 
    Promptly following the deposit of Bonds in exchange for Units of the Trusts,
it  is the practice of the Sponsor to place all of the Units as collateral for a
letter or letters of credit from one or more commercial banks under an agreement
to release such Units from time to  time as needed for distribution. Under  such
an  arrangement  the Sponsor  pays  such banks  compensation  based on  the then
current interest  rate. This  is  a normal  warehousing arrangement  during  the
period of distribution of the Units to public investors.
 
    The  Sponsor plans to allow a discount  to brokers and dealers in connection
with  the  primary  distribution   of  Units  and   also  in  secondary   market
transactions. The primary market discounts are as follows:
 
                                      A-28
<PAGE>
 
<TABLE>
<CAPTION>
                                                         Discount per Unit
                                --------------------------------------------------------------------
<S>                             <C>         <C>            <C>            <C>            <C>
                                 National    Long Inter-                  Short Inter-
                                and State      mediate     Intermediate      mediate     Short Term
Number of Units*                  Trusts       Trusts         Trusts         Trusts        Trusts
- ------------------------------  ----------  -------------  -------------  -------------  -----------
Less than 500.................    $3.20         $2.90          $2.70          $2.00         $1.50
500 but less than 1,000.......     3.20         2.90           2.70           2.00          1.50
1,000 but less than 2,500.....     3.20         2.70           2.50           1.80          1.30
2,500 but less than 5,000.....     3.20         2.45           2.25           1.55          1.05
5,000 but less than 10,000....     2.50         2.45           2.25           1.55          1.05
10,000 but less than 25,000...     2.00         2.00           2.00           1.30           .80
25,000 but less than 50,000...     1.75         1.75           1.75           1.30           .60
50,000 or more................     1.75         1.50           1.50           1.00           .60
</TABLE>
 
*Breakpoint  sales charges and related dealer concessions are computed both on a
 dollar basis and  on the  basis of  the number  of Units  purchased, using  the
 equivalent  of 500 Units to  $50,000, 2,500 Units to  $250,000 etc. and will be
 applied on that basis which is more favorable to the purchaser.
 
    The Sponsor currently intends  to maintain a secondary  market for Units  of
each  Trust. See  Section 7.  The amount of  the dealer  concession on secondary
market purchases of Trust Units through the Sponsor will be computed based  upon
the  value  of the  Bonds in  the  Trust portfolio,  including the  sales charge
computed as described in Section 6, and adjusted to reflect the cash position of
the Trust principal  account, and will  vary with  the size of  the purchase  as
shown in the following table:
 
<TABLE>
<CAPTION>
                                                               Amount of Purchase*
                            -----------------------------------------------------------------------------------------
<S>                         <C>        <C>        <C>        <C>        <C>        <C>         <C>         <C>
                                        $50,000   $100,000   $250,000   $500,000   $1,000,000  $2,500,000
                              Under       to         to         to         to          to          to      $5,000,000
Years to Maturity            $50,000    $99,999   $249,999   $499,999   $999,999   $2,499,999  $4,999,999   or more
- --------------------------  ---------  ---------  ---------  ---------  ---------  ----------  ----------  ----------
Less than 1...............      0          0          0          0          0          0           0           0
1 but less than 2.........    1.00%      .90%       .85%       .80%       .70%        .55%       .467%       .389%
2 but less than 3.........    1.30%      1.20%      1.10%      1.00%      .90%        .70%       .634%       .538%
3 but less than 4.........    1.60%      1.45%      1.35%      1.25%      1.10%       .90%       .781%       .662%
4 but less than 5.........    2.00%      1.85%      1.75%      1.55%      1.40%      1.25%       1.082%      .914%
5 but less than 7.........    2.30%      2.15%      1.95%      1.80%      1.65%      1.50%       1.320%      1.140%
7 but less than 10........    2.60%      2.45%      2.25%      2.10%      1.95%      1.70%       1.496%      1.292%
10 but less than 13.......    3.00%      2.80%      2.60%      2.45%      2.30%      2.00%       1.747%      1.494%
13 but less than 16.......    3.25%      3.15%      3.00%      2.75%      2.50%      2.15%       1.878%      1.606%
16 or more................    3.50%      3.50%      3.40%      3.35%      3.00%      2.50%       2.185%      1.873%
</TABLE>
 
 *Breakpoint sales charges and related dealer concessions are computed both on a
  dollar  basis and  on the basis  of the  number of Units  purchased, using the
  equivalent of 500 Units to $50,000, 2,500 Units to $250,000, etc., and will be
  applied on that basis which is more favorable to the purchaser.
 
    The Sponsor reserves the  right to change  the foregoing dealer  concessions
from time to time.
 
    Certain  commercial banks are making Units  of the Trusts available to their
customers on  an agency  basis. A  portion of  the sales  charge paid  by  these
customers  is retained by or  remitted to the banks in  the amounts shown in the
above table.  The Glass-Steagall  Act prohibits  banks from  underwriting  Trust
Units;  the Act  does, however, permit  certain agency  transactions and banking
regulators have not indicated that these particular agency transactions are  not
permitted  under the Act. In Texas and  in certain other states, any bank making
Units available must be registered as a broker-dealer under state law.
 
    To facilitate the handling of transactions, sales of Units shall be  limited
to  transactions involving a minimum of either  $5,000 or 50 Units, whichever is
less. The Sponsor reserves the right to  reject, in whole or in part, any  order
for the purchase of Units.
 
18.  OWNERSHIP AND TRANSFER OF UNITS
 
The  ownership of  Units is  evidenced by book  entry positions  recorded on the
books and records of the Trustee  unless the Unitholder expressly requests  that
the  purchased Units be evidenced in Certificate form. The Trustee is authorized
to treat as the owner of Units that
 
                                      A-29
<PAGE>
person who at the time  is registered as such on  the books of the Trustee.  Any
Unitholder  who  holds  a Certificate  may  change  to book  entry  ownership by
submitting to the Trustee the Certificate along with a written request that  the
Units  represented by such Certificate  be held in book  entry form. Likewise, a
Unitholder who holds Units in book entry form may obtain a Certificate for  such
Units  by written request to the Trustee.  Units may be held in denominations of
one Unit or any multiple or fraction thereof. Fractions of Units are computed to
three decimal  places. Any  Certificates issued  will be  numbered serially  for
identification,  and are issued  in fully registered  form, transferable only on
the books  of the  Trustee. Book  entry Unitholders  will receive  a Book  Entry
Position Confirmation reflecting their ownership.
 
    Certificates  for  Units will  bear an  appropriate  notation on  their face
indicating which plan of distribution has been selected. When a change is  made,
the   existing  Certificates  must  be  surrendered   to  the  Trustee  and  new
Certificates issued to  reflect the  currently effective  plan of  distribution.
There will be no charge for this service. Holders of book entry Units can change
their  plan of distribution  by making a  written request to  the Trustee, which
will issue a new Book Entry Position Confirmation to reflect such change.
 
    Units are transferable by  making a written request  to the Trustee and,  in
the  case of Units  evidenced by Certificate(s),  by presenting and surrendering
such Certificate(s) to the  Trustee, at its corporate  trust office in New  York
City, properly endorsed or accompanied by a written instrument or instruments of
transfer. The Certificate(s) should be sent registered or certified mail for the
protection  of the Unitholder.  Each Unitholder must  sign such written request,
and such Certificate(s) or transfer instrument,  exactly as his name appears  on
(a)  the face of the Certificate(s) representing the Units to be transferred, or
(b) the  Book  Entry  Position  Confirmation(s) relating  to  the  Units  to  be
transferred.  Such signature(s) must be guaranteed  by a guarantor acceptable to
the Trustee. In certain instances  the Trustee may require additional  documents
such  as,  but  not  limited  to,  trust  instruments,  certificates  of  death,
appointments  as  executor  or   administrator  or  certificates  of   corporate
authority.  Mutilated Certificates must  be surrendered to  the Trustee in order
for a replacement Certificate to be issued.
 
    Although at the date hereof  no charge is made  and none is contemplated,  a
Unitholder  may be  required to  pay $2.00 to  the Trustee  for each Certificate
reissued or transfer of Units requested and to pay any governmental charge which
may be imposed in connection therewith.
 
REPLACEMENT OF LOST, STOLEN OR DESTROYED CERTIFICATES.
 
    To obtain a  new Certificate replacing  one that has  been lost, stolen,  or
destroyed,   the   Unitholder   must  furnish   the   Trustee   with  sufficient
indemnification and pay such expenses as the Trustee may incur.
 
    The indemnification protects the  Trustee, Sponsor, and  Trust from risk  if
the original Certificate is presented for transfer or redemption by a person who
purchased  it  in good  faith,  for value  and without  notice  of any  fraud or
irregularity.
 
    This indemnification  must  be  in the  form  of  an Open  Penalty  Bond  of
Indemnification.  The premium for such  an indemnity bond may  vary from time to
time, but currently amounts to 1% of  the market value of the Units  represented
by  the Certificate.  In the  case however,  of a  Trust as  to which  notice of
termination has been given, the premium currently amounts to 0.5% of the  market
value of the Units represented by such Certificate.
 
19.  HOW UNITS MAY BE REDEEMED WITHOUT CHARGE
 
Unitholders  may redeem all or a portion of  their Units by (1) making a written
request for such redemption (book entry Unitholders may use the redemption  form
on the reverse side of their Book Entry Position Confirmation) to the Trustee at
its corporate trust office in New
 
                                      A-30
<PAGE>
York  City  (redemptions  of  1,000  Units  or  more  will  require  a signature
guarantee), (2)  in  the case  of  Units evidenced  by  a Certificate,  by  also
tendering  such  Certificate to  the Trustee,  duly  endorsed or  accompanied by
proper instruments  of  transfer  with signatures  guaranteed  as  explained  in
Section  18 above, and  (3) payment of applicable  governmental charges, if any.
Certificates should be sent only by registered or certified mail to minimize the
possibility of their being lost  or stolen. In order  to effect a redemption  of
Units  evidenced by a  Certificate, a Unitholder must  tender the Certificate to
the Trustee or provide satisfactory indemnity required in connection with  lost,
stolen  or destroyed  Certificates (See Section  18). No redemption  fee will be
charged. A Unitholder may authorize the Trustee to honor telephone  instructions
for  the  redemption of  Units held  in  book entry  form. Units  represented by
Certificates may not be redeemed by telephone. The proceeds of Units redeemed by
telephone will  be  sent  by check  either  to  the Unitholder  at  the  address
specified  on  his  account  or  to a  financial  institution  specified  by the
Unitholder for credit to the account of the Unitholder. A Unitholder wishing  to
use this method of redemption must complete a Telephone Redemption Authorization
Form  and furnish  the Form to  the Trustee.  Telephone Redemption Authorization
Forms can  be  obtained from  a  Unitholder's registered  representative  or  by
calling  the Trustee. Once the completed Form is on file, the Trustee will honor
telephone redemption requests by any person. If the telephone redemption request
is received prior to 4:00 p.m. eastern time, the Unitholder will be entitled  to
receive  for  each Unit  tendered the  Redemption Price  as determined  above. A
telephone redemption  request received  after  4:00 p.m.  eastern time  will  be
treated  as  having been  received the  following  business day.  The redemption
proceeds will  be mailed  within  seven calendar  days following  the  telephone
redemption  request. Telephone redemptions  are limited to  1,000 Units or less.
Only Units  held  in the  name  of individuals  may  be redeemed  by  telephone;
accounts  registered in broker name, or  accounts of corporations or fiduciaries
(including among others, trustees, guardians, executors and administrators)  may
not use the telephone redemption privilege.
 
    On  the seventh calendar day following the date of tender, or if the seventh
calendar day is not a business day, on the first business day prior thereto, the
Unitholder will be entitled to receive in cash for each Unit tendered an  amount
equal to the Unit Value of such Trust determined by the Trustee, as of 4:00 p.m.
eastern  time on the date of tender  as defined hereafter, plus accrued interest
to, but  not  including,  the  fifth  business day  after  the  date  of  tender
("Redemption  Price"). The  price received upon  redemption may be  more or less
than the amount paid by  the Unitholder depending on the  value of the Bonds  on
the  date of  tender. Such  value will vary  with market  and credit conditions,
including changes in  interest rate  levels. Unitholders should  check with  the
Trustee  or  their broker  to determine  the  Redemption Price  before tendering
Units.
 
    While the Trustee has the power to determine Redemption Price when Units are
tendered, the authority has  by practice been delegated  by the Trustee to  John
Nuveen  & Co.  Incorporated, which  determines the  Redemption Price  on a daily
basis.
 
    The "date of  tender" is  deemed to  be the date  on which  the request  for
redemption  of Units is received  in proper form by  the Trustee, except that as
regards a redemption request received after 4:00 p.m. eastern time or on any day
on which the New  York Stock Exchange (the  "Exchange") is normally closed,  the
date  of tender  is the  next day on  which such  Exchange is  normally open for
trading and such request will  be deemed to have been  made on such day and  the
redemption will be effected at the Redemption Price computed on that day.
 
    Accrued  interest paid  on redemption shall  be withdrawn  from the Interest
Account of the  appropriate Trust or,  if the balance  therein is  insufficient,
from  the Principal Account of such Trust.  All other amounts paid on redemption
shall be withdrawn from the Principal Account. The Trustee is empowered to  sell
underlying  Bonds of a  Trust in order  to make funds  available for redemption.
(See Section 21.) Units so redeemed shall be cancelled.
 
                                      A-31
<PAGE>
    To the extent that Bonds  are sold from a Trust,  the size and diversity  of
such  Trust will  be reduced. Such  sales may be  required at a  time when Bonds
would not  otherwise  be  sold and  might  result  in lower  prices  than  might
otherwise be realized.
 
    The  Redemption Price is  determined on the  basis of the  BID prices of the
Bonds in each Trust, while  the initial Public Offering  Price of Units will  be
determined  on the  basis of the  OFFERING prices of  the Bonds as  of 4:00 p.m.
eastern time on any day on which  the Exchange is normally open for trading  and
such determination is made. As of any given time, the difference between the bid
and  offering  prices of  such Bonds  may be  expected  to average  1% to  2% of
principal amount in the case of  Bonds in National, Long Intermediate and  State
Trusts,  3/4%  to  1  1/2% in  the  case  of Bonds  in  Intermediate,  and Short
Intermediate Trusts and 1/2% to 3/4% in the case of Bonds in Short Term  Trusts.
In  the case of actively traded Bonds, the difference may be as little as 1/4 to
1/2 of 1%, and in  the case of inactively  traded Bonds such difference  usually
will  not exceed 3%. The difference between the aggregate offering prices of the
Bonds in each Trust  and the aggregate  bid prices thereof  on the business  day
prior  to  the Date  of Deposit  is shown  in the  discussion of  specific trust
matters.
 
    The right  of redemption  may be  suspended and  payment postponed  for  any
period  during  which the  Securities  and Exchange  Commission  determines that
trading in the municipal bond market is restricted or an emergency exists, as  a
result  of  which  disposal  or  evaluation  of  the  Bonds  is  not  reasonably
practicable, or for such other periods as the Securities and Exchange Commission
may by order permit.
 
    Under regulations issued by the  Internal Revenue Service, the Trustee  will
be  required to withhold 31% of the principal amount of a Unit redemption if the
Trustee has not  been furnished  the redeeming  Unitholder's tax  identification
number  in the manner  required by such  regulations. Any amount  so withheld is
transmitted to  the  Internal  Revenue  Service and  may  be  recovered  by  the
Unitholder  only when filing  his or her tax  return. Under normal circumstances
the Trustee obtains the Unitholder's tax identification number from the  selling
broker  at the time the Certificate or Book Entry Return Confirmation is issued,
and this number is printed on the Certificate or Book Entry Return  Confirmation
and on distribution statements. If a Unitholder's tax identification number does
not  appear as  described above,  or if it  is incorrect,  the Unitholder should
contact the Trustee before redeeming Units to determine what action, if any,  is
required to avoid this "back-up withholding."
 
20.  HOW UNITS MAY BE PURCHASED BY THE SPONSOR
 
The  Trustee will notify the  Sponsor of any tender  of Units for redemption. If
the Sponsor's bid in  the secondary market  at that time  equals or exceeds  the
Redemption  Price it may purchase such Units by notifying the Trustee before the
close of business on  the second succeeding business  day and by making  payment
therefor  to  the Unitholder  not  later than  the  day on  which  payment would
otherwise have been made by the Trustee. (See Section 19.) The Sponsor's current
practice is to bid at the Redemption  Price in the secondary market. Units  held
by the Sponsor may be tendered to the Trustee for redemption as any other Units.
 
    The  Public Offering  Price upon  resale of any  Units thus  acquired by the
Sponsor will be  calculated in accordance  with the procedure  described in  the
then currently effective prospectus relating to such Units. Any profit resulting
from  the resale of  such Units will  belong to the  Sponsor which likewise will
bear any loss resulting from a  lower Public Offering Price or Redemption  Price
subsequent to its acquisition of such Units.
 
21.  HOW BONDS MAY BE REMOVED FROM THE TRUSTS
 
Bonds will be removed from a Trust as they mature or are redeemed by the issuers
thereof.  See  the "Schedules  of Investments"  and "General  Trust Information"
under Section 3 for a discussion of call provisions of portfolio Bonds.
 
                                      A-32
<PAGE>
    The Indenture also  empowers the Trustee  to sell Bonds  for the purpose  of
redeeming  Units tendered by any Unitholder, and for the payment of expenses for
which income may not be available. Under the Indenture the Sponsor is  obligated
to  provide the Trustee with a current list of Bonds in each Trust to be sold in
such circumstances. In deciding which Bonds  should be sold the Sponsor  intends
to  consider, among  other things, such  factors as: (1)  market conditions; (2)
market  prices  of  the  Bonds;  (3)  the  effect  on  income  distributions  to
Unitholders  of the sale of various Bonds; (4) the effect on principal amount of
underlying Bonds  per Unit  of the  sale  of various  Bonds; (5)  the  financial
condition of the issuers; and (6) the effect of the sale of various Bonds on the
investment  character of the Trust. Such sales, if required, could result in the
sale of Bonds by the Trustee at prices less than original cost to the Trust.  To
the extent Bonds are sold, the size and diversity of such Trust will be reduced.
 
    In  addition, the  Sponsor is empowered  to direct the  Trustee to liquidate
Bonds upon the happening of certain other events, such as default in the payment
of principal and/or interest, an action of the issuer that will adversely affect
its ability to continue payment of the  principal of and interest on its  Bonds,
or  an  adverse  change  in  market, revenue  or  credit  factors  affecting the
investment character of the Bonds. If a default in the payment of the  principal
of  and/or interest  on any  of the Bonds  occurs, and  if the  Sponsor fails to
instruct the Trustee whether to  sell or continue to  hold such Bonds within  30
days  after notification  by the  Trustee to  the Sponsor  of such  default, the
Indenture provides that  the Trustee  shall liquidate said  Bonds forthwith  and
shall not be liable for any loss so incurred.
 
    In  connection with its determination  as to the sale  or liquidation of any
Bonds, the Sponsor  will consider the  Bond's then current  rating, but  because
such  ratings are the opinions of the rating agencies as to the quality of Bonds
they undertake to rate and not  absolute standards of quality, the Sponsor  will
exercise its independent judgment as to Bond creditworthiness.
 
    The Sponsor may also direct the Trustee to liquidate Bonds in a Trust if the
Bonds  in  the  Trust  are  the  subject  of  an  advanced  refunding, generally
considered to be when  refunding bonds are issued  and the proceeds thereof  are
deposited  in irrevocable trust to retire the refunded Bonds on their redemption
date.
 
    Except as stated in Section 4 regarding the limited right of substitution of
Replacement Bonds for Failed Bonds, and except for refunding securities that may
be exchanged for Bonds under certain conditions specified in the Indenture,  the
Indenture  does  not permit  either the  Sponsor  or the  Trustee to  acquire or
deposit bonds either in addition  to, or in substitution  for, any of the  Bonds
initially deposited in a Trust.
 
22.  INFORMATION ABOUT THE TRUSTEE
 
The Trustee is United States Trust Company of New York, with its principal place
of  business at 114 West 47th Street, New York, New York 10036 and its corporate
trust office at  770 Broadway,  New York, New  York 10003.  United States  Trust
Company  of New York, established in  1853, has, since its organization, engaged
primarily in the  management of trust  and agency accounts  for individuals  and
corporations. The Trustee is a member of the New York Clearing House Association
and  is subject to supervision and examination by the Superintendent of Banks of
the State of New York, the  Federal Deposit Insurance Corporation and the  Board
of  Governors of the Federal Reserve System.  In connection with the storage and
handling of  certain Bonds  deposited in  the Trusts,  the Trustee  may use  the
services   of  The  Depository  Trust  Company.  These  services  would  include
safekeeping of the Bonds and  coupon-clipping, computer book-entry transfer  and
institutional  delivery  services. The  Depository  Trust Company  is  a limited
purpose trust company organized under the Banking Law of the State of New  York,
a  member of the Federal  Reserve System and a  clearing agency registered under
the Securities Exchange Act of 1934.
 
                                      A-33
<PAGE>
LIMITATIONS ON LIABILITIES OF SPONSOR AND TRUSTEE
 
    The Sponsor and the Trustee shall  be under no liability to Unitholders  for
taking  any action or for  refraining from any action  in good faith pursuant to
the Indenture, or for errors in judgment, but shall be liable only for their own
negligence, lack of good faith or  willful misconduct. The Trustee shall not  be
liable for depreciation or loss incurred by reason of the sale by the Trustee of
any  of the Bonds. In the  event of the failure of  the Sponsor to act under the
Indenture, the Trustee may act thereunder and shall not be liable for any action
taken by it in good faith under the Indenture.
 
    The Trustee shall not be liable for any taxes or other governmental  charges
imposed  upon or in respect of the Bonds or upon the interest thereon or upon it
as Trustee under  the Indenture or  upon or in  respect of any  Trust which  the
Trustee  may be required  to pay under any  present or future  law of the United
States of  America or  of any  other taxing  authority having  jurisdiction.  In
addition,  the  Indenture  contains  other  customary  provisions  limiting  the
liability of the Trustee.
 
SUCCESSOR TRUSTEES AND SPONSORS
 
    The Trustee or any successor trustee  may resign by executing an  instrument
of resignation in writing and filing same with the Sponsor and mailing a copy of
a  notice of resignation to all Unitholders  then of record. Upon receiving such
notice, the Sponsor is required to promptly appoint a successor trustee. If  the
Trustee becomes incapable of acting or is adjudged a bankrupt or insolvent, or a
receiver  or other public officer shall take  charge of its property or affairs,
the  Sponsor  may  remove  the  Trustee  and  appoint  a  successor  by  written
instrument.  The resignation or  removal of a  trustee and the  appointment of a
successor trustee shall become effective only when the successor trustee accepts
its appointment as such. Any successor trustee shall be a corporation authorized
to exercise  corporate  trust  powers, having  capital,  surplus  and  undivided
profits of not less than $5,000,000. Any corporation into which a trustee may be
merged  or with which it may be  consolidated, or any corporation resulting from
any merger or consolidation to  which a trustee shall be  a party, shall be  the
successor trustee.
 
    If  upon resignation of  a trustee no  successor has been  appointed and has
accepted the appointment within 30 days after notification, the retiring trustee
may apply  to  a  court of  competent  jurisdiction  for the  appointment  of  a
successor.
 
    If the Sponsor fails to undertake any of its duties under the Indenture, and
no  express  provision is  made for  action by  the Trustee  in such  event, the
Trustee may, in addition to its other  powers under the Indenture (1) appoint  a
successor sponsor or (2) terminate the Indenture and liquidate the Trusts.
 
23.  INFORMATION ABOUT THE SPONSOR
 
John Nuveen & Co. Incorporated, the Sponsor and Underwriter, was founded in 1898
and  is  the oldest  and  largest investment  banking  firm specializing  in the
underwriting and distribution of tax-exempt securities and maintains the largest
research department in the investment  banking community devoted exclusively  to
the  analysis of municipal securities. In  1961 the Sponsor began sponsoring the
Nuveen Tax-Exempt Unit Trust and, since this  time, it has issued more than  $30
billion  in tax-exempt unit trusts, including over $8 billion in insured trusts.
The Sponsor is  also principal underwriter  of the Nuveen  Municipal Bond  Fund,
Inc.,  the Nuveen Tax-Exempt Money Market  Fund, Inc., Nuveen Tax-Free Reserves,
Inc., Nuveen California Tax-Free  Fund, Inc., Nuveen  Tax-Free Bond Fund,  Inc.,
Nuveen  Insured Tax-Free Bond Fund, Inc.  and Nuveen Tax-Free Money Market Fund,
Inc., all  registered open-end  management investment  companies, and  acted  as
co-managing  underwriter of Nuveen Municipal Value Fund, Inc., Nuveen California
Municipal Value Fund, Inc., Nuveen New  York Municipal Value Fund, Inc.,  Nuveen
Municipal  Income  Fund, Inc.,  Nuveen California  Municipal Income  Fund, Inc.,
Nuveen New York Municipal Income Fund, Inc., Nuveen
 
                                      A-34
<PAGE>
Premium Income Municipal  Fund, Inc.,  Nuveen Performance  Plus Municipal  Fund,
Inc.,  Nuveen California Performance Plus Municipal  Fund, Inc., Nuveen New York
Performance Plus Municipal  Fund, Inc., Nuveen  Municipal Advantage Fund,  Inc.,
Nuveen  Municipal  Market Opportunity  Fund,  Inc., Nuveen  California Municipal
Market Opportunity  Fund, Inc.,  Nuveen New  York Municipal  Market  Opportunity
Fund,  Inc., Nuveen Investment  Quality Municipal Fund,  Inc., Nuveen California
Investment Quality  Municipal Fund,  Inc., Nuveen  New York  Investment  Quality
Municipal  Fund,  Inc.,  Nuveen  Insured Quality  Municipal  Fund,  Inc., Nuveen
Florida  Investment  Quality  Municipal  Fund,  Nuveen  Pennsylvania  Investment
Quality  Municipal Fund,  Nuveen New  Jersey Investment  Quality Municipal Fund,
Inc., and  the Nuveen  Select Quality  Municipal Fund,  Inc., Nuveen  California
Quality  Municipal Fund,  Inc., Nuveen New  York Select  Quality Municipal Fund,
Inc., Nuveen  Quality  Income Municipal  Fund,  Inc., Nuveen  Insured  Municipal
Opportunity  Fund, Inc.,  Nuveen Florida  Quality Income  Municipal Fund, Nuveen
Michigan Quality Income Municipal Fund,  Inc., Nuveen New Jersey Quality  Income
Municipal  Fund, Inc., Nuveen  Ohio Quality Income  Municipal Fund, Inc., Nuveen
Pennsylvania  Quality  Income  Municipal  Fund,  Nuveen  Texas  Quality   Income
Municipal  Fund, Nuveen California  Quality Income Municipal  Fund, Inc., Nuveen
New York Quality Income Municipal  Fund, Inc., Nuveen Premier Insured  Municipal
Income  Fund, Inc., Nuveen  Select Tax Free Income  Portfolio, Nuveen Select Tax
Free Income  Portfolio  2,  Nuveen Insured  California  Select  Tax-Free  Income
Portfolio,  Nuveen  Insured New  York Select  Tax-Free Income  Portfolio, Nuveen
Premium Income Municipal Fund 2, Inc.,  Nuveen Select Tax Free Income  Portfolio
3,  Nuveen  Select  Maturities Municipal  Fund,  Nuveen Select  Tax  Free Income
Portfolio 4,  Nuveen  Premium Income  Municipal  Fund 3,  Inc.,  Nuveen  Insured
California  Premium Income Municipal  Fund, Inc., Nuveen  Arizona Premium Income
Municipal Fund, Inc., Nuveen Insured Premium Income Municipal Fund, Inc., Nuveen
Insured Florida Premium  Income Municipal Fund,  Nuveen Michigan Premium  Income
Municipal  Fund, Inc.,  Nuveen New Jersey  Premium Income  Municipal Fund, Inc.,
Nuveen Insured New York Premium Income Municipal Fund, Inc., Nuveen Ohio Premium
Income Municipal Fund, Inc., Nuveen Pennsylvania Premium Income Municipal  Fund,
Nuveen Texas Premium Income Municipal Fund, Nuveen Premium Income Municipal Fund
4,  Inc., Nuveen  Pennsylvania Premium Income  Municipal Fund  2, Nuveen Insured
Florida  Premium  Income  Municipal  Fund  2,  Nuveen  Maryland  Premium  Income
Municipal   Fund,  Nuveen   Virginia  Premium  Income   Municipal  Fund,  Nuveen
Massachusetts Premium Income Municipal  Fund, Nuveen Insured California  Premium
Income  Municipal Fund 2, Inc., Nuveen Insured New York Premium Income Municipal
Fund 2, Nuveen  New Jersey Premium  Income Municipal Fund  2, Nuveen  Washington
Premium  Income Municipal Fund, Nuveen Michigan Premium Income Municipal Fund 2,
Nuveen Premium Income Municipal Fund 5, Nuveen Georgia Premium Income  Municipal
Fund,  Nuveen Missouri Premium Income Municipal Fund, Nuveen Connecticut Premium
Income Municipal  Fund, Nuveen  North Carolina  Premium Income  Municipal  Fund,
Nuveen New Jersey Premium Income Municipal Fund 3, Nuveen Florida Premium Income
Municipal Fund, Nuveen New York Premium Income Municipal Fund, Nuveen California
Premium Income Municipal Fund, Nuveen Pennsylvania Premium Income Municipal Fund
3,  Nuveen  Maryland Income  Municipal Fund  2,  Nuveen Virginia  Premium Income
Municipal Fund 2, Nuveen  Ohio Premium Income Municipal  Fund 2, Nuveen  Insured
Premium Income Municipal Fund 2, Nuveen California Premium Income Municipal Fund
2,  Nuveen  Premium Income  Municipal Fund  6, registered  closed-end management
investment  companies.  These  registered  open-end  and  closed-end  investment
companies  currently have  approximately $32.8 billion  in tax-exempt securities
under management.  Nationwide, more  than  1,000,000 individual  investors  have
purchased  Nuveen's tax  exempt trusts  and funds.  The present  corporation was
organized in 1967 as a wholly-owned subsidiary of Nuveen Corporation,  successor
to  the original John Nuveen & Co. founded  in 1898 as a sole proprietorship and
incorporated in  1953.  In  1974,  John  Nuveen  &  Co.  Incorporated  became  a
wholly-owned  subsidiary of The  St. Paul Companies,  Inc., a financial services
management company  located in  St. Paul,  Minnesota. On  May 19,  1992,  common
shares  comprising a  minority interest  in The  John Nuveen  Company ("JNC"), a
newly organized corporation
 
                                      A-35
<PAGE>
which holds all of the shares of Nuveen,  were sold to the general public in  an
initial  public offering.  St. Paul retains  a controlling interest  in JNC with
over 70% of JNC's shares. The Sponsor is a member of the National Association of
Securities Dealers, Inc.  and the  Securities Industry Association  and has  its
principal  offices located in Chicago (333 W.  Wacker Drive) and New York (Swiss
Bank Tower, 10 East 50th Street). It maintains 14 regional offices.
 
24.  OTHER INFORMATION
AMENDMENT OF INDENTURE
 
    The Indenture may  be amended  by the Trustee  and the  Sponsor without  the
consent  of any of  the Unitholders (1) to  cure any ambiguity  or to correct or
supplement any provision thereof which may be defective or inconsistent, or  (2)
to  make such  other provisions as  shall not adversely  affect the Unitholders,
provided, however, that the Indenture may not be amended to increase the  number
of Units in any Trust or to permit the deposit or acquisition of bonds either in
addition  to, or in substitution for any of the Bonds initially deposited in any
Trust except as stated in Section 4 regarding the limited right of  substitution
of  Replacement Bonds and  except for the substitution  of refunding bonds under
certain circumstances. The Trustee shall advise the Unitholders of any amendment
promptly after execution thereof.
 
TERMINATION OF INDENTURE
 
   
    Each Trust may be liquidated at any  time by written consent of 100% of  the
Unitholders  or by  the Trustee when  the value of  such Trust, as  shown by any
evaluation, is less than 20% of the original principal amount of such Trust  and
will  be  liquidated  by  the Trustee  in  the  event that  Units  not  yet sold
aggregating more  than 60%  of the  Units originally  created are  tendered  for
redemption  by the Sponsor thereby reducing the  net worth of such Trust to less
than 40%  of the  principal amount  of  the Bonds  originally deposited  in  the
portfolio. (See "Essential Information Regarding the Trusts.") The sale of Bonds
from  the Trusts upon termination  may result in realization  of a lesser amount
than might otherwise be realized  if such sale were  not required at such  time.
For  this  reason,  among  others,  the amount  realized  by  a  Unitholder upon
termination  may  be  less  than  the  principal  amount  of  Bonds   originally
represented  by the Units held by  such Unitholder. The Indenture will terminate
upon the redemption, sale or other disposition of the last Bond held thereunder,
but in no event shall it continue beyond the end of the calendar year  preceding
the  fiftieth anniversary of its execution for National and State Trusts, beyond
the end  of  the  calendar  year preceding  the  twentieth  anniversary  of  its
execution  for Long Intermediate,  and Intermediate Trusts or  beyond the end of
the calendar year  preceding the tenth  anniversary of its  execution for  Short
Intermediate and Short Term Trusts.
    
 
    Written  notice of  any termination  specifying the  time or  times at which
Unitholders may surrender their Certificates, if any, for cancellation shall  be
given  by  the  Trustee to  each  Unitholder  at the  address  appearing  on the
registration books of the Trust maintained  by the Trustee. Within a  reasonable
time thereafter the Trustee shall liquidate any Bonds in the Trust then held and
shall  deduct  from the  assets  of the  Trust  any accrued  costs,  expenses or
indemnities provided  by  the  Indenture  which are  allocable  to  such  Trust,
including estimated compensation of the Trustee and costs of liquidation and any
amounts  required as a reserve to provide for payment of any applicable taxes or
other governmental charges. The Trustee shall then distribute to Unitholders  of
such  Trust their pro  rata share of  the balance of  the Interest and Principal
Accounts. With  such distribution  the Unitholders  shall be  furnished a  final
distribution   statement,  in  substantially   the  same  form   as  the  annual
distribution statement, of the amount distributable. At such time as the Trustee
in its sole discretion shall determine that  any amounts held in reserve are  no
longer  necessary, it shall make distribution thereof to Unitholders in the same
manner.
 
                                      A-36
<PAGE>
LEGAL OPINION
 
    The legality of the Units offered hereby has been passed upon by Chapman and
Cutler, 111 West Monroe Street, Chicago, Illinois 60603. Special counsel for the
Trusts for respective state tax matters are named in "Tax Status" for each Trust
under Section 3. Carter, Ledyard  & Milburn, 2 Wall  Street, New York, New  York
10005,  has acted as counsel for the Trustee with respect to the Series, and, in
the absence of a New York Trust from the Series, as special New York tax counsel
for the Series.
 
AUDITORS
 
    The Statements of Condition and Schedules of Investments at Date of  Deposit
included  in  this  Prospectus  have  been audited  by  Arthur  Andersen  & Co.,
independent public accountants, as indicated in their report in this Prospectus,
and are included herein in reliance upon  the authority of said firm as  experts
in giving said report.
 
                                      A-37
<PAGE>
                            DESCRIPTION OF RATINGS*
 
    STANDARD  & POOR'S CORPORATION.  A  description of the applicable Standard &
Poor's Corporation rating symbols and their meanings follows:
 
    A Standard & Poor's rating is  a current assessment of the  creditworthiness
of  an obligor with respect  to a specific debt  obligation. This assessment may
take into consideration obligors such as guarantors, insurers or lessees.
 
    The rating is  not a recommendation  to purchase, sell  or hold a  security,
inasmuch  as  it  does not  comment  as to  market  price or  suitability  for a
particular investor.
 
    The ratings are  based on  current information  furnished by  the issuer  or
obtained by Standard & Poor's from other sources it considers reliable. Standard
&  Poor's does not  perform an audit in  connection with any  rating and may, on
occasion, rely on unaudited financial  information. The ratings may be  changed,
suspended  or withdrawn as  a result of  changes in, or  unavailability of, such
information, or for other circumstances.
 
    The ratings are based, in varying degrees, on the following considerations:
 
     I.  Likelihood of default--capacity  and willingness of  the obligor as  to
         the timely payment of interest and repayment of principal in accordance
         with the terms of the obligation;
 
     II.  Nature of and provisions of the obligation;
 
    III.  Protection  afforded by, and  relative position of,  the obligation in
          the event of  bankruptcy, reorganization or  other arrangements  under
          the laws of bankruptcy and other laws affecting creditors' rights.
 
    AAA--This  is the  highest rating  assigned by Standard  & Poor's  to a debt
obligation. Capacity to pay interest and repay principal is extremely strong.
 
    AA--Bonds rated AA  have a very  strong capacity to  pay interest and  repay
principal, and differ from the highest rated issues only in small degree.
 
    A--Bonds rated A have a strong capacity to pay interest and repay principal,
although they are somewhat more susceptible to the adverse effects of changes in
circumstances and economic conditions than bonds in higher rated categories.
 
    BBB--Bonds  rated BBB  are regarded  as having  an adequate  capacity to pay
interest and repay principal. Whereas they normally exhibit adequate  protection
parameters,  adverse  economic  conditions or  changing  circumstances  are more
likely to lead to a  weakened capacity to pay  interest and repay principal  for
bonds in this category than for bonds in the higher rated categories.
 
    Plus  (+) or Minus (-): The ratings from "AA" to "BB" may be modified by the
addition of a  plus or minus  sign to  show relative standing  within the  major
rating categories.
 
    Provisional   Ratings:  The  letter   "p"  indicates  that   the  rating  is
provisional. A  provisional  rating assumes  the  successful completion  of  the
project  being financed by the  issuance of the bonds  being rated and indicates
that payment of debt service requirements is largely or entirely dependent  upon
the successful and timely completion of the project. This rating, however, while
addressing  credit quality  subsequent to  completion of  the project,  makes no
comment on the  likelihood of,  or the  risk of  default upon  failure of,  such
completion.  Accordingly,  the investor  should exercise  his own  judgment with
respect to such likelihood and risk.
 
- ----------
*As published by the rating companies.
 
                                      A-38
<PAGE>
    Note Ratings:  A  Standard  &  Poor's note  rating  reflects  the  liquidity
concerns  and market access risks unique to notes.  Notes due in 3 years or less
will likely  receive a  note rating.  Notes maturing  beyond 3  years will  most
likely receive a long-term debt rating.
 
    Note rating symbols are as follows:
 
        SP-1  Very  strong  or strong  capacity to  pay principal  and interest.
              Those   issues   determined   to   possess   overwhelming   safety
              characteristics will be given a plus (+) designation.
 
        SP-2  Satisfactory capacity to pay principal and interest.
 
RATINGS OF INSURED TRUST UNITS.
 
    A  Standard  &  Poor's  Corporation's  rating on  the  units  of  an insured
investment trust (hereinafter referred to collectively as "units" and  "trusts")
is  a current assessment of creditworthiness with respect to the investment held
by such trust. This assessment  takes into consideration the financial  capacity
of  the  issuers and  of any  guarantors, insurers,  lessees or  mortgagors with
respect to such investments. The assessment, however, does not take into account
the extent to which trust  expenses or portfolio asset  sales for less than  the
trust  purchase price will reduce payment to  the unitholder of the interest and
principal required to be paid on  the portfolio assets. In addition, the  rating
is  not a recommendation to purchase, sell or hold units, inasmuch as the rating
does not comment as to market price of the units or suitability for a particular
investor.
 
    Units rated "AAA" are composed exclusively of assets that are rated "AAA" by
Standard &  Poor's  and/or certain  short-term  investments. Standard  &  Poor's
defines  its  AAA rating  for  such assets  as  the highest  rating  assigned by
Standard &  Poor's to  a debt  obligation. Capacity  to pay  interest and  repay
principal  is very strong. However,  unit ratings may be  subject to revision or
withdrawal at any time by Standard & Poor's and each rating should be  evaluated
independently of any other rating.
 
    MOODY'S  INVESTORS  SERVICE, INC.   A  brief  description of  the applicable
Moody's Investors Service, Inc. rating symbols and their meanings follows:
 
    Aaa--Bonds which are rated Aaa are judged to be the best quality. They carry
the smallest degree of  investment risk and are  generally referred to as  "gilt
edge."  Interest payments are protected by a large or by an exceptionally stable
margin and principal is secure. While the various protective elements are likely
to change, such changes  as can be  visualized are most  unlikely to impair  the
fundamentally  strong position of such issues. Their safety is so absolute that,
with the  occasional  exception  of  oversupply in  a  few  specific  instances,
characteristically,  their  market  value  is affected  solely  by  money market
fluctuations.
 
    Aa--Bonds which  are rated  Aa  are judged  to be  of  high quality  by  all
standards. Together with the Aaa group they comprise what are generally known as
high  grade bonds. They are  rated lower than the  best bonds because margins of
protection may  not  be  as  large  as in  Aaa  securities  or  fluctuations  of
protective  elements may be of greater amplitude  or there may be other elements
present which  make the  long-term  risks appear  somewhat  larger than  in  Aaa
securities.  Their  market value  is virtually  immune to  all but  money market
influences, with  the  occasional exception  of  oversupply in  a  few  specific
instances.
 
    A--Bonds  which are rated A possess many favorable investment attributes and
are to be considered as upper medium grade obligations. Factors giving  security
to  principal and interest are considered  adequate, but elements may be present
which suggest a susceptibility to impairment sometime in the future. The  market
value  of A-rated bonds may be influenced to some degree by economic performance
during a sustained period of depressed business conditions, but, during  periods
of normalcy, A-rated bonds frequently move in
 
                                      A-39
<PAGE>
parallel  with  Aaa  and  Aa  obligations,  with  the  occasional  exception  of
oversupply in a few specific instances.
 
    Moody's bond rating  symbols may  contain numerical modifiers  of a  generic
rating  classification. The modifier 1 indicates that the bond ranks at the high
end of  its category;  the modifier  2 indicates  a mid-range  ranking; and  the
modifier 3 indicates that the issue ranks in the lower end of its generic rating
category.
 
    Baa--Bonds  which are rated Baa are  considered as medium grade obligations,
i.e., they are neither  highly protected nor  poorly secured. Interest  payments
and  principal security appear  adequate for the  present but certain protective
elements may be lacking or may  be characteristically unreliable over any  great
length  of time. Such  bonds lack outstanding  investment characteristics and in
fact have speculative  characteristics as  well. The market  value of  Baa-rated
bonds  is more  sensitive to changes  in economic circumstances,  and aside from
occasional speculative factors applying to some bonds of this class, Baa  market
valuations  move in parallel  with Aaa, Aa  and A obligations  during periods of
economic normalcy, except in instances of oversupply.
 
    Con. (--)--Bonds for which the security depends upon the completion of  some
act  or the  fulfillment of  some condition  are rated  conditionally. These are
bonds secured by (a)  earnings of projects under  construction, (b) earnings  of
projects  unseasoned  in  operation  experience, (c)  rentals  which  begin when
facilities are completed, or (d) payments to which some other limiting condition
attaches. Parenthetical rating denotes  probable credit stature upon  completion
of construction or elimination of basis of condition.
 
    Note Ratings:
 
    MIG 1--This  designation  denotes  best  quality.  There  is  present strong
           protection by established cash  flows, superior liquidity support  or
           demonstrated broad-based access to the market for refinancing.
 
    MIG 2--This  designation  denotes high  quality.  Margins of  protection are
           ample although not so large as in the preceding group.
 
                                      A-40
<PAGE>
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                                      A-41
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                                      A-42
<PAGE>
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                                      A-43
<PAGE>
 
<TABLE>
<C>                <S>        <C>
           NUVEEN             Tax-Exempt Unit Trusts
                           PROSPECTUS
                           245,000 Units
                           Virginia Traditional Trust
                           285
                           California Insured Trust 223
                           Florida Insured Trust 188
                           Massachusetts Insured Trust
                           112
                           New York Insured Trust 215
                           Ohio Insured Trust 113
                           Pennsylvania Insured Trust
                           178
</TABLE>
 
<PAGE>
 
<TABLE>
<C>                 <S>        <C>
            NUVEEN             Tax-Exempt Unit Trusts
           Sponsor             John Nuveen & Co. Incorporated
                               333 West Wacker Drive
                               Chicago, IL 60606-1286
                               Telephone: 312.917.7700
                               Swiss Bank Tower
                               10 East 50th Street
                               New York, NY 10022
                               212.207.2000
           Trustee             United States Trust Company
                               of New York
                               770 Broadway
                               New York, NY 10003
                               800.257.8787
     Legal Counsel             Chapman and Cutler
        to Sponsor             111 West Monroe Street
                               Chicago, IL 60603
       Independent             Arthur Andersen & Co.
            Public             33 West Monroe Street
       Accountants             Chicago, IL 60603
    for the Trusts
</TABLE>
 
   Except as to statements made herein furnished by the Trustee, the Trustee has
   assumed  no responsibility for the accuracy, adequacy and completeness of the
   information contained in this Prospectus.
                   This Prospectus does not contain  all of the information  set
   forth in the registration statement and exhibits relating thereto, filed with
   the   Securities  and  Exchange  Commission,   Washington,  D.C.,  under  the
   Securities Act of 1933, and to which reference is made.
                   No person is authorized  to give any  information or to  make
   representations  not contained in  this Prospectus or  in supplementary sales
   literature prepared by the Sponsor, and any information or representation not
   contained therein must not be relied upon as having been authorized by either
   the Trusts, the Trustee or the  Sponsor. This Prospectus does not  constitute
   an  offer to sell,  or a solicitation of  an offer to  buy, securities in any
   State to any  person to  whom it is  not lawful  to make such  offer in  such
   state.  The  Trusts  are registered  as  a  Unit Investment  Trust  under the
   Investment Company Act  of 1940. Such  registration does not  imply that  the
   Trusts  or any of their Units  has been guaranteed, sponsored, recommended or
   approved by the United States or any State or agency or officer thereof.
 
   
   724
    
 
<PAGE>

Statement of differences between electronic filing and printed document.
   Pursuant to Rule 499(c) (7) under the Securities Act of 1933 and Rule
20-11 under the Investment Company Act of 1940, Registrant hereby identifies
those differences in the foregoing document between the electronic format in
which it is filed and the printed form in which it will be circulated:
   (1) The printed and distributed prospectus may be paged differently
because the printed document may contain a different amount of information on
each page from that contained in the electronic transmission.
   (2) On the cover page, in the index and on the last page of the printed
document, solid vertical bars will appear.
   (3) In the printed document, footnote symbols may include a "dagger" or
multiple "dagger".  The "dagger" symbol is represented as # in the electronic
document.
   (4) The printed and distributed prospectus will not  contain the
preliminary prospectus legend included at the beginning of the first
prospectus page.


<PAGE>

                       CONTENTS OF REGISTRATION STATEMENT

A.  BONDING ARRANGEMENTS OF DEPOSITOR:

    The Depositor has obtained  the following Stockbrokers Blanket Bonds
for its officers, directors and employees:

    INSURER/POLICY NO.                                     AMOUNT

    United Pacific Insurance Co.                           $10,000,000
    Reliance Insurance Company
    B 74 92 20

    Aetna Casualty and Surety                              $10,000,000
    08 F10618BCA

    St. Paul Insurance Co.                                 $ 6,000,000
    400 HC 1051

B.  This amendment of Registration Statement comprises the following papers 
and documents:

              The facing sheet
              The Prospectus

              The signatures

              Consents of Independent Public
              Accountants and Counsel as indicated

              Exhibits as listed on page S-5


<PAGE>

                                   SIGNATURES

    The Registrant, Nuveen Tax-Exempt Unit Trust, Series 724 hereby
identifies Series 401, 507, 512, 515, 517, 519 and 723 of the Nuveen 
Tax-Exempt Unit Trust for purposes of the representations required by 
Rule 487 and represents the following:

    (1) that the portfolio securities deposited in the series as to the
securities of which this Registration Statement is being filed do not differ
materially in type or quaility from those deposited in such previous series;

    (2) that, except to the extent necessary to identify the specific
portfolio securities deposited in, and to provide essential financial
information for, the series with respect to the securities of which this
Registration Statement is being filed, this Registration Statement does not
contain disclosures that differ in any material respect from those contained
in the registration statements for such previous series as to which the
effective date was determined by the Commission or the staff; and

    (3) that it has complied with Rule 460 under the Securities Act of 1933.

    Pursuant to the requirements of the Securities Act of 1933, the
Registrant, Nuveen Tax-Exempt Unit Trust, Series 724 has duly caused this
Amendment of Registration Statement to be signed on its behalf by the
undersigned thereunto duly authorized in the City of Chicago and State of
Illinois on 4/13/94.

 
                                NUVEEN TAX-EXEMPT UNIT TRUST, SERIES 724
                                (Registrant)

                                By JOHN NUVEEN & CO. INCORPORATED
                                (Depositor)


                       
                                By: Larry Woods Martin
                                    _________________________________
                                    Vice President


                        
                           Attest:  Morrison C. Warren
                                    __________________________________
                                    Assistant Secretary


<PAGE>

    Pursuant to the requirements of the Securities Act of 1933, this Amendment
of Registration Statement has been signed below by the following persons in 
the capacities and on the dates indicated:


    SIGNATURE                     TITLE*                       DATE

Richard J. Franke       Chairman, Board of Directors  )
                        Chief Executive Officer and   )
                        Director                      )
                                                      )
Donald E. Sveen         President, Chief Operating    )
                        Officer and Director          )
                                                      )
                                             
Anthony T. Dean         Executive Vice President      ) Larry Woods Martin
                        and Director                  ) Attorney-In-Fact**
                                                      )
Timothy T. Schwertfeger Executive Vice President      )
                        and Director                  )

O. Walter Renfftlen     Vice President and Controller )
                        (Principal Accounting Officer))
                                                      )
                                                      )4/13/94
___________________

*The titles of the persons named herein represent their capacity in and
relationship to John Nuveen & Co. Incorporated, the Depositor.

**The powers of attorney were filed on Form SE for Messrs. Franke, 
Sveen, Renfftlen, Dean and Schwertfeger with the Amendment to the 
Registration Statement on Form S-6 of Nuveen Tax-Exempt Unit Trust, 
Series 671 (File No. 33-49175). 



<PAGE>

724

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

    As independent public accountants, we hereby consent to the use of our
report and to all references to our Firm included in or made a part of this
Registration Statement.

                                 
                                            Arthur Andersen & Company
Chicago, Illinois
4/13/94


                         CONSENT OF CHAPMAN AND CUTLER

    The consent of Chapman and Cutler to the use of its name in the Prospectus
included in the Registration Statement is contained in its opinions filed by
this amendment as Exhibits 3.1 and 3.2 to the Registration Statement.

                            CONSENT OF STATE COUNSEL

    The consents of special counsel to the Fund for state tax matters to the 
use of their names in the Prospectus included in the Registration Statement 
are contained in their opinions filed by this amendment as Exhibit 3.3 to the
Registration Statement.

                   CONSENT OF STANDARD + POOR'S CORPORATION

    The consent of Standard + Poor's Corporation to the use of its name in
the Prospectus included in the Registration Statement is filed by this
amendment as Exhibit 4.1 to the Registration Statement.

                   CONSENT OF KENNY S+P EVALUATION SERVICES

    The consent of Kenny S+P Evaluation Services to the use of its name in the
Prospectus included in the Registration Statement is filed by this amendment 
as Exhibit 4.2 to the Registration Statement.

                      CONSENT OF CARTER, LEDYARD & MILBURN

    The consent of Carter, Ledyard & Milburn to the use of its name in the
Prospectus included in the Registration Statement is filed by this amendment 
as Exhibit 4.3 to the Registration Statement.

<PAGE>

                                LIST OF EXHIBITS


1.1 (a)  Copy of Trust Indenture and Agreement between John Nuveen &
         Co. Incorporated, Depositor, and United States Trust Company of
         New York, Trustee (as Exibit 1.1 (a) to the Sponsor's Registration
         Statement on Form S-6 relating to Series 723 of the Fund (file No.
         33-52527) and incorporated herein by reference).

1.1 (b)  Schedules to the Trust Indenture and Agreement.

2.1      Copy of Certificate of Ownership (Included in Exhibit 1.1(a) on
         pages 2 to 8, inclusive, and incorporated herein by reference).

3.1      Opinion of counsel as to legality of securities being registered.

3.2      Opinion of counsel as to Federal income tax status of securities
         being registered.

3.3      Opinions of special state counsel to the Fund for state tax matters
         as to income tax status to residents of the respective states of the
         units of the respective trusts and consents to the use of their names
         in the Prospectus.

4.1      Consent of Standard + Poor's Corporation.

4.2      Consent of Kenny S+P Evaluation Services.

4.3      Consent of Carter, Ledyard & Milburn.

                                                                      
<PAGE>                                                                        
                                                                              
Exhibit 1.1(b)                                                                
                                                                              
                                                                              
                                                                              
                                                                              
                                 SCHEDULE A                                   
                                                                              
                                                                              
Series 724                                           April 13, 1994           
                                                                              
Item 1.  This Indenture relates to the Nuveen Tax-Exempt Unit Trust           
         Series 724.                                                          
                                                                              
Item 2.  The date of this Indenture is April 13, 1994.                        
                                                                              
Item 3.  Series 724 shall initially contain Trusts as follows:                
                                                                              
         (a)   Virginia Traditional Trust 285                                 
         (b)   California Insured Trust 223                                   
         (c)   Florida Insured Trust 188                                      
         (d)   Massachusetts Insured Trust 112                                
         (e)   New York Insured Trust 215                                     
         (f)   Ohio Insured Trust 113                                         
         (g)   Pennsylvania Insured Trust 178                                 
                                                                              
                                                                              
Item 4.  Each Trust shall initially consist of the following number of Units: 
                                                                              
         (a)   Virginia Traditional Trust               35,000 Units          
         (b)   California Insured Trust                 35,000 Units          
         (c)   Florida Insured Trust                    35,000 Units          
         (d)   Massachusetts Insured Trust              35,000 Units          
         (e)   New York Insured Trust                   35,000 Units          
         (f)   Ohio Insured Trust                       35,000 Units          
         (g)   Pennsylvania Insured Trust               35,000 Units          
                                                                              
                                                                              
Item 5.  (a) The amount of the second distribution from the Interest          
             Account of the respective Trusts will be as follows:             
                                                                              
         ( 1)  Virginia Traditional Trust              $ .2865 per Unit       
         ( 2)  California Insured Trust                $ .2658 per Unit       
         ( 3)  Florida Insured Trust                   $ .2727 per Unit       
         ( 4)  Massachusetts Insured Trust             $ .2872 per Unit       
         ( 5)  New York Insured Trust                  $ .2786 per Unit       
         ( 6)  Ohio Insured Trust                      $ .2739 per Unit       
         ( 7)  Pennsylvania Insured Trust              $ .2822 per Unit       
                                                                              
         (b) The date of the second distribution from the Interest Account    
             of the respective Trusts will be as follows:                     
                                                                              
         ( 1)  Virginia Traditional Trust              May 15, 1994           
         ( 2)  California Insured Trust                May 15, 1994           
         ( 3)  Florida Insured Trust                   May 15, 1994           
         ( 4)  Massachusetts Insured Trust             May 15, 1994           
         ( 5)  New York Insured Trust                  May 15, 1994           
         ( 6)  Ohio Insured Trust                      May 15, 1994           
         ( 7)  Pennsylvania Insured Trust              May 15, 1994           
                                                                              
         (c) The record date for the second distribution from the             
             Interest Account of the respective Trusts will be as             
             follows:                                                         
                                                                              
         ( 1)  Virginia Traditional Trust              May 1, 1994            
         ( 2)  California Insured Trust                May 1, 1994            
         ( 3)  Florida Insured Trust                   May 1, 1994            
         ( 4)  Massachusetts Insured Trust             May 1, 1994            
         ( 5)  New York Insured Trust                  May 1, 1994            
         ( 6)  Ohio Insured Trust                      May 1, 1994            
         ( 7)  Pennsylvania Insured Trust              May 1, 1994            
                                                                              
                                                                              
         PAGE 2                                                               
                                                                              
                                                                              
Item 6.  Record dates for subsequent semi-annual distributions from the       
         Interest Account for each of the respective Trusts will be the 1st   
         day of May and November of each year.                                
                                                                              
                                                                              
Item 7.  (a) Record date for distibution from the Principal Account of each   
             of the respective Trusts will be the first day of May and        
             November of each year.                                           
                                                                              
         (b) The first record date for distributions from the Principal       
             Account of each of the respective Trusts will be                 
             May 1, 1994.                                                     
                                                                              
                                                                              
Item 8.  The Trust shall in no event continue beyond the end of the calendar  
         year preceding the fiftieth anniversary of the execution of this     
         Indenture for National and State Trusts, beyond the end of the       
         calendar year preceding the twentieth anniversary of its execution   
         for Long Intermediate and Intermediate Trusts and beyond the end of  
         the calendar year preceding the tenth anniversary of its execution   
         for Short Intermediate and Short Term Trusts.                        
                                                                              
                                                                              
Item 9.  Quarterly distributions from the Interest Account of the respective  
         Trusts will be computed as of the 1st day of February, May, August,  
         and November.                                                        
                                                                              
                                                                              
Item 10. Certain deductions from the Interest Account by the Trustee          
         will commence as follows:                                            
                                                                              
         (a)   Virginia Traditional Trust              May 1, 1994            
         (b)   California Insured Trust                May 1, 1994            
         (c)   Florida Insured Trust                   May 1, 1994            
         (d)   Massachusetts Insured Trust             May 1, 1994            
         (e)   New York Insured Trust                  May 1, 1994            
         (f)   Ohio Insured Trust                      May 1, 1994            
         (g)   Pennsylvania Insured Trust              May 1, 1994            

Item 11. (a)  For services performed prior to the date indicated in Item 5(c)
         of this Schedule A, the Trustee shall be paid at the following annual
         rates per $1,000 of principal amount of bonds:

            (1)   Virginia Traditional Trust              $1.5408

            (2)   California Insured Trust                $1.6217

            (3)   Florida Insured Trust                   $1.5952

            (4)   Massachusetts Insured Trust             $1.5969

            (5)   New York Insured Trust                  $1.5968

            (6)   Ohio Insured Trust                      $1.5226

            (7)   Pennsylvania Insured Trust              $1.5904
                                                                         
         (b)  For services performed on and after the date indicated in Item
         5(c) of this Schedule A, the Trustee shall be paid at the following
         annual rates per $1,000 of principal amount of bonds:

            (1)   Virginia Traditional Trust

                  Monthly Plan of Distribution            $1.5408
                  Quarterly Plan of Distribution          $1.2208
                  Semi-Annual Plan of Distribution        $1.0308

            (2)   California Insured Trust
               
                  Monthly Plan of Distribution            $1.6217
                  Quarterly Plan of Distribution          $1.3017
                  Semi-Annual Plan of Distribution        $1.1117

            (3)   Florida Insured Trust
 
                  Monthly Plan of Distribution            $1.5952
                  Quarterly Plan of Distribution          $1.2752
                  Semi-Annual Plan of Distribution        $1.0852



            (4)   Massachusetts Insured Trust
 
                  Monthly Plan of Distribution            $1.5969
                  Quarterly Plan of Distribution          $1.2769
                  Semi-Annual Plan of Distribution        $1.0869

            (5)   New York Insured Trust

                  Monthly Plan of Distribution            $1.5968
                  Quarterly Plan of Distribution          $1.2768
                  Semi-Annual Plan of Distribution        $1.0868

            (6)   Ohio Insured Trust
 
                  Monthly Plan of Distribution            $1.5226
                  Quarterly Plan of Distribution          $1.2026
                  Semi-Annual Plan of Distribution        $1.0126

            (7)   Pennsylvania Insured Trust 

                  Monthly Plan of Distribution            $1.5904
                  Quarterly Plan of Distribution          $1.2704
                  Semi-Annual Plan of Distribution        $1.0804
           
                                                                             
                            ADDITIONAL SCHEDULES                              
                                                                              
                                                                              
                         BONDS INITIALLY DEPOSITED                            
                                                                              
                  NUVEEN TAX-EXEMPT UNIT TRUST SERIES 724                     
                                                                              
                                                                              
                                                                              
                                                                              
Incorporated herein and made a part hereof as indicated below are the         
corresponding portions of the 'Schedules of Investments at Date of Deposit'   
contained in the Prospectus dated the Date of Deposit and relating to the     
above-named Series:                                                           
                                                                              
         Schedule B:  Virginia Traditional Trust 285                          
         Schedule C:  California Insured Trust 223                            
         Schedule D:  Florida Insured Trust 188                               
         Schedule E:  Massachusetts Insured Trust 112                         
         Schedule F:  New York Insured Trust 215                              
         Schedule G:  Ohio Insured Trust 113                                  
         Schedule H:  Pennsylvania Insured Trust 178                          


<PAGE>

EXHIBIT 3.1

(ON CHAPMAN AND CUTLER LETTERHEAD)

4/13/94


John Nuveen & Co. Incorporated
333 W. Wacker Drive
Chicago, Illinois  60606

RE:  Nuveen Tax-Exempt Unit Trust, Series 724

Gentlemen:

    We have served as counsel for you, as depositor of Nuveen Tax-Exempt Unit
Trust, Series 724 (hereinafter referred to as the "Fund"), in connection
with the issuance under the Trust Indenture and Agreement dated the date 
hereof between John Nuveen & Co. Incorporated, as Depositor, and United 
States Trust Company of New York, as Trustee, of Units of fractional 
undivided interest in the one or more Trusts of said Fund (hereinafter 
referred to as the "Units").
 
    In connection therewith, we have examined such pertinent records and
documents and matters of law as we have deemed necessary in order to enable us
to express the opinions hereinafter set forth.

    Based upon the foregoing, we are of the opinion that:

   1.   The execution and delivery of the Trust Indenture and Agreement and
the establishment of book entry positions and the execution and issuance of 
certificates evidencing the Units in the Trusts of the Fund have been duly 
authorized; and

    2.   The book entry positions and certificates evidencing the 
Units in the Trusts of the Fund when duly executed and delivered or duly 
established by the Depositor and the Trustee in accordance with the 
aforementioned Trust Indenture and Agreement, will constitute valid and 
binding obligations of such Trusts and the Depositor in accordance with the 
terms thereof.

    We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (File No. 33-52327) relating to the Units referred
to above and to the use of our name and to the reference to our firm in said
Registration Statement and in the related Prospectus.

Respectfully submitted,



CHAPMAN AND CUTLER

<PAGE>

EXHIBIT 3.2

(ON CHAPMAN AND CUTLER LETTERHEAD)

4/13/94

John Nuveen & Co. Incorporated
333 W. Wacker Drive
Chicago, Illinois  60606

RE:  Nuveen Tax-Exempt Unit Trust, Series 724

Gentlemen:

    We have served as counsel for you, as Depositor of Nuveen Tax-Exempt Unit
Trust, Series 724 (the "Fund") in connection with the issuance under the
Trust Indenture and Agreement, dated the date hereof between John Nuveen & Co.
Incorporated, as Depositor, and United States Trust Company of New York, as
Trustee, of Units of fractional undivided interest (the "Units"), as evidenced
by a book entry position or certificate, if requested by the purchaser of 
Units, in the one or more Trusts of said Fund.

    We have also served as counsel for you in connection with all previous
Series of the Nuveen Tax-Exempt Unit Trust and as such have previously 
examined such pertinent records and documents and matters of law as we have 
deemed necessary, including (but not limited to) the Trust Indenture and 
Agreements with respect to those series.  We have also examined such 
pertinent records and documents and matters of law as we have deemed 
necessary including (but not limited to) the Trust Indenture and Agreement 
relating to Nuveen Tax-Exempt Unit Trust, Series 724.

    We have concluded that the Trust Indenture and Agreement for the Fund and
its counterpart in each of the prior issues of Nuveen Tax-Exempt Unit Trust 
are in all material respects substantially identical.

    Based upon the foregoing, and upon such matters of law as we consider
to be applicable we are of the opinion that, under existing federal income
law:

    (i)  For Federal income tax purposes, each of the Trusts will not be
taxable as an association but will be governed by the provisions of 
Subchapter J (relating to Trusts) of Chapter 1, Internal Revenue Code of 
1986 (the "Code").

    (ii) Each Unitholder will be considered as owning a pro rata
share of each asset of the respective Trust of the Fund in the proportion
that the number of Units of such Trust held by him bears to the total number
of outstanding Units of such Trust. Under Subpart E, Subchapter J of Chapter
1 of the Code, income of each Trust will be treated as income of each
Unitholder thereof in the proportion described and an item of Fund income
will have the same character in the hands of a Unitholder as it would have in
the hands of the Trustee.  Accordingly, to the extent that the income of a
Trust consists of interest and original issue discount excludable from gross
income under Section 103 of the Code, such income will be excludable from
federal gross income of the Unitholder, except in the case of a Unitholder
who is a substantial user (or a person related to such user) of a facility
financed through issuance of any industrial development bonds or certain
private activity bonds held by the Trust. In the case of such Unitholder who
is a substantial user (and no other) interest received and original issue
discount with respect to his Units attributable to such industrial
development bonds or such private activity bonds is includable in his gross
income. In the case of certain corporations, interest on the Bonds is included
in computing the alternative minimum tax pursuant to Sections 56(f) and 56(g)
of the Code, the enviromental tax (the "Superfund Tax") imposed by Sections
59A of the Code, and the branch profits tax imposed by Section 884 of the Code
with repect to U.S. branches of foreign corporations.

    (iii) Gain or loss will be recognized to a Unitholder upon
redemption or sale of his Units.  Such gain or loss is measured by comparing 
the proceeds of such redemption or sale with the adjusted basis of such Units.
Before adjustment, such basis would normally be cost if the Unitholder had
acquired his Units by purchase, plus his aliquot share of advances by the
Trustee to the Trust to pay interest on Bonds delivered after the Unitholder's
settlement date to the extent that such interest accrued on the Bonds during
the period from the Unitholder's settlement date to the date such Bonds are
delivered to the Trust, but only to the extent that such advances are to be
repaid to the Trustee out of interest received by the Fund with respect to
such Bonds.  In addition, such basis will be increased by both the
Unitholder's aliquot share of the accrued original issued discount with
respect to each Bond held by the Trust with respect to which there was an
original issue discount and reduced by the annual amortization of bond
premium, if any, on Bonds held by the Trust.

<PAGE>

    (iv) If the Trustee disposes of a Trust asset (whether by sale, payment on
maturity, redemption or otherwise), gain or loss is recognized to the
Unitholder and the amount thereof is measured by comparing the
Unitholder's aliquot share of the total proceeds from the transaction
with his basis for his fractional interest in the asset disposed of.  Such 
basis is ascertained by apportioning the tax basis for his Units among each 
of the Trust assets (as of the date on which his Units were acquired) ratably 
according to their values as of the valuation date nearest the date on which 
he purchased such Units.  A Unitholder's basis in his Units and of his
fractional interest in each Trust asset must be reduced by the amount of his 
aliquot share of interest received by the Fund, if any, on Bonds delivered
after the Unitholder's settlement date to the extent that such
interest accrued on the Bonds during the period from the Unitholder's
settlement date to the date such Bonds are delivered to the Trust, must be 
reduced by the annual amortization of bond premium, if any, on Bonds held by 
the Trust and must be increased by the Unitholder's share of accrued
original issue discount with respect to each Bond which, at the time
the Bond was issued, had original issue discount.

     (v)  In the case of any Bond held by the Trust where the "stated
redemption price at maturity" exceeds the "issue price," such excess shall
be original issue discount.  With respect to each Unitholder, upon the
purchase of his Units subsequent to the original issuance of Bonds held by the
Trust Section 1272(a)(7) of the Code provides for a reduction in the accrued
"daily portion" of such original issue discount upon the purchase of a Bond
subsequent to the Bond's original issue, under certain circumstances.  In the
case of any Bond held by the Trust the interest on which is excludable from
gross income under Section 103 of the Code, any original issue discount which
accrues with respect thereto will be treated as interest which is excludable
from gross income under Section 103 of the Code.

    (vi)  In the case of any Bond which matures within one year of the date
issued, the accrual of tax-exempt original issue discount will generally be
computed daily on a ratable basis unless the Unitholder elects to accrue such
discount under a constant yield method, compounded daily.

    (vii)  In the case of any Bond which does not mature within one year
after the date issued, tax-exempt original issue discount will accrue
daily, computed generally under a constant yield method, compounded
semiannually (with straight line interpolation between compounding dates).

    (viii)  In the case of Trusts for which Municipal Bond Investors Assurance
Corporation ("MBIA") insurance with respect to each of the Bonds deposited
therein has been obtained by the Depositor or the issuer or underwriter of the
Bonds, we have examined the form of MBIA's policy or several policies of
insurance (the "Policies") which have been delivered to the Trustee.  Assuming
issuance of Policies in such form, in our opinion, any amounts paid under said
Policies representing maturing interest on defaulted obligations held by the
Trustee will be excludable from Federal gross income if, and to the same
extent as, such interest would have been so excludable if paid by the
respective issuer.  Paragraph (ii) of this opinion is accordingly applicable
to Policy proceeds representing maturing interest.
<PAGE>

    Because the Trusts do not include any "specified private activity bonds"
within the meaning of Section 57(a)(5) of the Code issued on or after August
8, 1986, none of the Trust Fund's interest income shall be treated as an item
of tax preference when computing the alternative minimum tax.  In the case of
corporations, for taxable years beginning after December 31, 1986, the alter-
native minimum tax and the Superfund Tax depend upon the corporation's
alternative minimum taxable income ("AMTI"), which is the corporation's
taxable income with certain adjustments.

    Pursuant to Section 56(f) of the Code, one of the adjustment
items used in computing AMTI and the Superfund Tax of a corporation
(other than an S Corporation, Regulated Investment Company, Real Estate
Investment Trust or REMIC) is an amount equal to 50% of the excess of such
corporation's "adjusted net book income" over an amount equal to its AMTI
(before such adjustment item and the alternative tax net operating
loss deduction).  For taxable years beginning after 1989, such adjustment item
will be 75% of the excess of such corporation's "adjusted current earnings"
over an amount equal to its AMTI (before such adjustment item and the
alternative tax net operating net operating loss deduction) pursuant to
Section 56(g) of the Code.  Both "adjusted net book income" and "adjusted
current earnings" include all tax-exempt interest, including interest on all
Bonds in the Trust, and tax-exempt original issue discount.

   Effective for tax returns filed after December 31, 1987,  all taxpayers
are required to disclose to the Internal Revenue Service the amount of
tax-exempt interest earned during the year.

    Section 265 of the Code generally provides for a reduction
in each taxable year of 100% of the otherwise deductible interest on
indebtedness incurred or continued by financial institutions, to which either 
Section 585 or Section 593 of the Code applies, to purchase or carry 
obligations acquired after August 7, 1986, the interest on which is exempt
from federal income taxes for such taxable year.  Under rules prescribed by 
Section 265, the amount of interest otherwise deductible by such financial
institutions in any taxable year which is deemed to be attributable to 
tax-exempt obligations acquired after August 7, 1986 will be the amount
that bears the same ratio to the interest deduction otherwise allowable
(determined without regard to Section 265) to the taxpayer for the taxable
year as the taxpayer's average adjusted basis (within the meaning of Section
1016) of tax-exempt obligations acquired after August 7, 1986, bears to
such average adjusted basis for all assets of the taxpayer, unless such 
financial institution can otherwise establish under regulations to be
prescribed by the Secretary of the Treasury, the amount of interest on 
indebtedness incurred or continued to purchase or carry such obligations.

<PAGE>

    We also call attention to the fact that, under Section 265 of the
Code,  interest on indebtedness incurred or continued to purchase or carry
Units by taxpayers other than certain financial institutions, as referred to
above, is not deductible for Federal income tax purposes. Under rules used by
the Internal Revenue Service for determining when borrowed funds are con-
sidered used for the purpose of purchasing or carrying particular assets, the
purchase of Units may be considered to have been made with borrowed funds even
though the borrowed funds are not directly traceable to the purchase of Units.
However, these rules generally do not apply to interest paid on indebtedness
incurred for expenditures of a personal nature such as a mortgage incurred to
purchase or improve a personal residence.

    "The Revenue Reconciliation Act of 1993" (the "Tax Act") subjects tax-exempt
bonds to the market discount rules of the Code effective for bonds purchased
after April 30, 1993.  In general, market discount is the amount (if any) by
which the stated redemption price at maturity exceeds an investor's purchase
price (except to the extent that such difference, if any, is attributable to
original issue discount not yet accrued).  Market discount can arise based on
the price a Trust pays for Bonds or the price a Unitholder pays for his or her
Units.  Under the Tax Act, accretion of market discount is taxable as ordinary
income; under prior law, the accretion had been treated as capital gain.  Market
discount that accretes while a Trust holds a Bond would be recognized as
ordinary income by the Unitholders when principal payments are received on the
Bond, upon sale or at redemption (including early redemption), or upon the sale
or redemption of his or her Units, unless a Unitholder elects to include market
discount in taxable income as it accrues.
     
    We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (File No. 33-52327) relating to the Units referred
to above and to the use of our name and to the reference to our firm in said
Registration Statement and in the related Prospectus.

Respectfully submitted,


CHAPMAN AND CUTLER


<PAGE>

EXHIBIT 3.3


(ON CHRISTIAN, BARTON, EPPS, BRENT & CHAPPELL LETTERHEAD)

4/13/94

John Nuveen & Co. Incorporated
333 W. Wacker Drive
Chicago, Illinois  60606

Attn:  James J. Wesolowski, Esquire
       General Counsel


United States Trust Company of New York,
as Trustee of Nuveen Tax-Exempt Unit Trust
Series 724
285
770 Broadway
New York, New York  10003

Gentlemen:

    We have acted as special Virginia counsel to Nuveen Tax-Exempt Unit Trust,
Series 724 (the "Fund") concerning a Registration Statement (No. 33-52327)
under the Securities Act of 1933, as amended (the "Registration Statement"),
covering the issuance by the Fund of units of fractional undivided
interest pursuant to a Trust Indenture and Agreement dated as of the date
hereof between John Nuveen & Co. Incorporated and United States Trust Company
of New York.  The Fund will issue units in several State Trusts, one of which
is the Virginia Traditional Trust (the "Virginia Trust" or "Trust", the
units of which are referred to as "the Units").  The Units will be purchased
by various investors (the "Unitholders").  Each Trust will be administered as
a distinct entity with separate certificates, investments, expenses, books
and records.
    The assets of the Virginia Trust will consist of interest-bearing
obligations issued by or on behalf of the Commonwealth of Virginia, its
counties, municipalities, authorities or political subdivisions, and, provided
the interest thereon is exempt from Virginia income taxes by the laws or
treaties of the United States, by or on behalf of United States territories
or possessions, including Puerto Rico, Guam, the Virgin Islands and the
Northern Mariana Islands, and their political subdivisions and authorities
(the "Bonds").

    You have requested our opinion as to the application of Virginia state and
local taxes to the Trust and the Unitholders.  In rendering our
opinion, we have assumed that the interest on all Bonds in the Trust will be 
exempt from Federal income tax.  Furthermore, in rendering our opinion, we 
have relied on the opinion of Messrs. Chapman and Cutler, of even date 
herewith, that:
 
    (1)  the Trusts are not associations taxable as corporations for Federal
income tax purposes and tax-exempt interest received by each of the Trusts on
Bonds deposited therein will retain its status as tax-exempt interest, for
Federal income tax purposes, when distributed to a Unitholder;

    (2)  each Unitholder of a Trust is considered to be the owner of a
pro rata portion of such Trust under Subpart E, sub-chapter J of Chapter 1 of
the Internal Revenue Code of 1986 and will have a taxable event when the Trust
disposes of a Bond or when the Unitholder redeems or sells Units . . . .
If the Trustee disposes of Bonds (whether by sale, payment on maturity,
redemption or otherwise), gain or loss is recognized to the Unitholder.
The amount of any such gain or loss is measured by comparing the
Unitholder's pro rata share of the total proceeds from such disposition
with the Unitholder's basis for his or her fractional interest in the
asset disposed of.  In the case of a Unitholder who purchases Units,
such basis (before adjustment for earned original issue discount and 
amortized bond premium, if any) is determined by apportioning the cost of the
Units among each of the Trust assets ratably according to value as of the 
date of acquisition of the Units.  The tax cost reduction requirements of 
said Code relating to amortization of bond premium may, under some 
circumstances, result in the Unitholder realizing a taxable gain when
his or her Units are sold or redeemed for an amount equal to their original
cost.
 
    Based upon the foregoing, we are of the following opinion:

    The Trust will be treated as a trust for Virginia income tax purposes and
not as an association taxable as a corporation.  As a result, income of the
Trust will be treated as the income of the Unitholders.

<PAGE>

    The calculation of Virginia taxable income begins with federal adjusted
gross income in the case of an individual or federal taxable income in the 
case of a corporation, estate or trust.  Certain modifications are specified, 
but no such modification would require the addition of interest on the Bonds.
Accordingly, amounts representing tax-exempt interest for federal income tax
purposes received or accrued by the Trust with respect to the Bonds, will not 
be taxed to the Trust or to the Unitholders for Virginia income tax
purposes.  To the extent that interest on obligations of the Commonwealth or
any political subdivision or instrumentality thereof is included in federal
adjusted gross income, Virginia law provides that the income shall be 
subtracted in arriving at Virginia taxable income.  In addition, Virginia 
income tax exemption is independently provided for interest on certain 
obligations, including those issued by industrial development authorities 
created pursuant to the Virginia Industrial Development and Revenue Bond Act, 
by the Virginia Housing Development Authority, by the Virginia Resources 
Authority and by the Virginia Education Loan Authority.  Where such an 
independent exemption is provided, interest on such obligations is exempt 
from Virginia income taxation without regard to any exemption from federal 
income taxes.


    As a general rule, to the extent that gain (whether as a result of the
sale of Bonds by the Trust or as a result of the sale of a Unit by the
Unitholder) is subject to federal income taxation, such gain will be
included in the Unitholder's Virginia taxable income.  Under the
language of certain enabling legislation, however, such as the Virginia 
Industrial Development and Revenue Bond Act, the Virginia Resources Authority
Act and the Virginia Housing Development Authority Act, profit made on the
sale of obligations issued by authorities created thereunder is expressly
exempt from Virginia income taxation.  Such enabling legislation does not
appear to require a disallowance in the calculation of Virginia taxes of any
loss that may be deductible for federal income tax purposes with respect to
such obligations, although the Virginia Department of Taxation has taken a
contrary view.

    No income tax is imposed by any political subdivision of the Commonwealth 
of Virginia.  The Units and the obligations represented thereby are exempt 
from the Virginia tax on intangibles (other than the tax on the capital of
banks, as to which no opinion is expressed).  Intangibles (other than
merchants' capital) are not subject to taxation by any political subdivision.

    The Commonwealth of Virginia does not impose a gift tax.  The Virginia
estate tax is equal to the maximum state death tax credit allowable against 
the federal estate tax payable by the estate.

    We have not examined any of the Bonds, nor have we made any review of the
proceedings relating to the issuance of the Bonds or the basis for any 
opinions with respect to their validity or the tax-exempt status thereof for 
federal income tax purposes.  We have made no independent investigation as 
to, or passed on, the operation of the Trust or the sale of the Units in 
Virginia or in any other state.  No opinion was requested, nor is any opinion 
expressed, with respect to any tax consequences to the sponsor of the Trust, 
any underwriters, or any broker-dealers.

    We should point out that to the extent the Trust consists of property of
persons domiciled in Virginia, the Trust will in our opinion be considered a
"resident trust" for Virginia income tax purposes.  While we do not believe 
that the mere ownership by the Trust of the Bonds constitutes sufficient 
nexus to subject the Trust to the tax jurisdiction of Virginia, we express no 
opinion as to whether any activities with respect to the sale of Units in 
Virginia may establish such a nexus.  If a sufficient nexus exists, then if 
the Trust is required to file a federal fiduciary income tax return it will 
also be required to file a Virginia fiduciary income tax return.  Any such 
return would be for information purposes only, since each transaction of the 
Trust should be treated as a transaction of the several Certificateholders,
and not as a transaction of the Trust that could give rise to Virginia
taxable income of the Trust.
 
    We consent to the filing of this opinion as an exhibit to the Registration
Statement and to the use of our name and the reference to our firm in the
Registration Statement and the prospectus included therein.

Very truly yours,


CHRISTIAN, BARTON, EPPS, BRENT & CHAPPELL

<PAGE>


EXHIBIT 3.3

(ON ORRICK, HERRINGTON & SUTCLIFFE LETTERHEAD)




4/13/94


John Nuveen & Co. Incorporated
333 W. Wacker Drive
Chicago, Illinois 60606

United States Trust Company of New York
770 Broadway
New York, NY 10003

     Re: Nuveen Tax-Exempt Unit Trust, Series 724
            
            
         California Insured Trust 223  
            
                  

Dear Sirs:

        We have acted as special California counsel for John Nuveen & Co.
Incorporated, as Depositor of the above captioned trust(s) (each a "Trust"),
in connection with the issuance under the Trust Agreement dated 4/13/94,
among John Nuveen & Co. Incorporated, as Depositor, and United States Trust
Company of New York, as Trustee, of units of fractional undivided
interest in each Trust (the "Units") in exchange for certain bonds, as well as
"regular-way" and "when-issued" contracts for the purchase of bonds (such
bonds and contracts are hereinafter referred to collectively as the
Securities").

        In connection therewith, we have examined such corporate records,
certificates and other documents and such questions of law as we have deemed
necessary or appropriate for the purpose of this opinion, and, on the basis
of such examination, and upon existing provisions of the Revenue and Taxation
Code of the State of California, with respect to each Trust, we are of the
opinion that:

        1.  The Trust is not an association taxable as a corporation
and the income of the Trust will be treated as the income of the unitholders
under the income tax laws of California.

        2.  Interest on the underlying Securities (which may include bonds
or other obligations issued by the governments of Puerto Rico, the Virgin
Islands, Guam, or the Northern Mariana Islands) which is exempt from tax
under California personal income tax and property tax laws when received by
the Trust will, under such laws, retain its status as tax-exempt interest when
distributed to unitholders.  However, interest on the underlying securities
attributed to a unitholder which is a corporation subject to the California
franchise tax laws may be includable in such corporation's gross income for
purposes of determining its California franchise tax.

        3.  Under California income tax law, each unitholder in the Trust will
have a taxable event when the Trust disposes of a security (whether by sale,
exchange, redemption, or payment at maturity) or when the unitholder redeems
or sells Units.  Because of the requirement that tax cost basis be reduced to
reflect amortization of bond premium, under some circumstances a
unitholder may realize taxable gain when units are sold or
redeemed for an amount equal to, or less than, their original cost.
The total tax cost of each Unit to a unitholder is allocated among each of
the bond issues held in the Trust (in accordance with the proportion of the
Trust comprised by each bond issue) in order to determine his per unit tax
cost for each bond issue; and the tax cost reduction requirements relating to
amortization of bond premium will apply separately to the per unit cost of
each bond issue.  Unitholders' bases in their Units, and the bases for
their fractional interest in each Trust asset, may have to be adjusted for
their pro rata share of accrued interest received, if any, on securities
delivered after the unitholders' respective settlement dates.

        4.  Under the California personal property tax laws, bonds (including
the Securities) or any interest therein is exempt from such tax.

        5.  Proceeds paid under an insurance policy, if any, issued to the
Trustee of the Trust with respect to the Securities which represent maturing
interest on defaulted obligations held by the Trustee will be exempt from
California personal income tax if, and to the same extent as, such interest
would have been so exempt if paid by the issuer of the defaulted obligations.

<PAGE> 

        6.  Under Section 17280(b)(2) of the California Revenue and
Taxation Code, interest on indebtedness incurred or continued to purchase
or carry Units of the Trust is not deductible for the purposes of the
California personal income tax.  While there presently is no California
authority interpreting this provision, Section 17280(b)(2) directs the
California Francise Tax Board to prescribe regulations determining the
proper allocation and apportionment of interest costs for this purpose.
The Franchise Tax Board has not yet proposed or prescribed such regulations.
In interpreting the generally similar Federal provision, the Internal
Revenue Service has taken the position that such indebtedness need not be
directly traceable to the purchase or carrying of Units (although the Service
has not contended that a deduction for interest on indebtedness incurred
to purchase or improve a personal residence or to purchase goods or services
for personal consumption will be disallowed).  In the absence of conflicting
regulations or other California authority, the California Franchise Tax
Board generally has interpreted California statutory tax provisions in accord
with Internal Revenue Service interpretations of similar Federal provisions.


       Opinions relating to the validity of securities and the exemption of
interest thereon from State of California income tax are rendered by bond
counsel to the issuing authority at the time securities are issued and we
have relied solely upon such opinions, or, as to securities not yet
delivered, forms of such opinions contained in official statements
relating to such securities.  Except in certain instances in which we acted
as bond counsel to issuers of securities, and as such made a review of pro-
ceedings relating to the issuance of certain securities at the time of their
issuance, we have not made any review of proceedings relating to the issuance
of securities or the bases of bond counsels' opinions.

        We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (File No. 33-52327) relating to the Units referred to
above and to the use of our name and to the reference to our firm in said
Registration Statement and in the related Prospectus.

Very truly yours,



ORRICK, HERRINGTON & SUTCLIFFE
(BY KENNETH G. WHYBURN)




<PAGE>

EXHIBIT 3.3

(On Carlton, Fields, Ward, Emmanuel, Smith & Cutler, P.A. LETTERHEAD)




4/13/94


Nuveen Tax-Exempt Unit Trust, Series 724
Florida Insured Trust 188
John Nuveen & Co. Incorporated
333 W. Wacker Drive
Chicago, Illinois  60606

Attn:  James J. Wesolowski, Esquire
       Vice President, General Counsel
       and Secretary

        Re:   
             Florida Insured Trust 188

Gentlemen:

    We have acted as special Florida counsel to Nuveen Tax-Exempt Unit Trust,
- - including the above-captioned trust (the "Fund") in connection with the
issuance by the Fund of units of fractional undivided interests in the Fund
(the "Units").  In that connection, you have requested our opinion as to the
application of Florida state and local taxes to the Trust (as hereinafter
defined) and to investors who purchase units in the Trust.

    We have not been furnished with a copy of the Registration Statement or 
the prospectus, which is a part of the Registration Statement relating to the
issuance by the Fund of the Units.  However, you have authorized us to assume
that the proposed offer and sale of the Units, including the units of the
Florida Trust, will be carried out in that same manner and upon the same terms
and conditions as those described in any prospectus for a previous Nuveen
Tax-Exempt Unit Trust that contained a Florida Insured Trust.
In addition, you have authorized us to assume and we have assumed that:

    (a)  The Fund has been organized under a Trust Indenture and Agreement
between John Nuveen & Co., Incorporated (the "Depositor") and United States
Trust Company of New York (the "Trustee").

    (b)  The Fund will issue the Units in several State Trusts; one of which
is the Florida Insured Trust (the "Trust").

    (c)  The Units will be purchased by various investors who may be 
individuals or corporations.

    (d)  Each Unit of the Trust represents a fractional undivided interest in
the principal and net income of the Trust in the ratio of ten Units for each
$1,000 principal amount of the obligations initially acquired by the Trust.

    (e)  Each Trust will be administered as a distinct entity with separate
certificates, investments, expenses, books, and records.

    (f)  The assets of the Trust will consist solely of interest-bearing
obligations issued by or on behalf of the State of Florida, its political
subdivisions, and authorities or by the Commonwealth of Puerto Rico, Guam
or the Virgin Islands.

    (g)  Distributions of interest received by the Trust will be made
semi-annually, unless the Unitholder elects otherwise.

    (h)  The interest on all Bonds in the Trust will be exempt from Federal
income tax.(N.1)

    (i)  The Bonds have been issued in strict compliance with all requirements
of Florida, Federal or territorial law.

    (j)  The Fund is a registered investment company under the Investment
Company Act of 1940, as amended.


    In rendering our opinion, you have advised us that Messrs. Chapman and
Cutler have rendered the following opinions and have authorized us to rely 
upon such opinions and we have relied upon such opinions that:

    (a)  The Trust will not be taxable as an association but will be governed 
by the provisions of Subchapter J (relating to trusts) of Chapter 1 of the 
Internal Revenue Code of 1986, as amended.

    (b)  Each Unitholder will be considered as owning a pro-rata share
of each asset of the Trust to which such Unit relates in the proportion
that the number of Units of the Trust held by him bears to the total number of
outstanding Units of the Trust and will be subject to Federal income tax on
the income therefrom under the provisions of Subpart E of Subchapter J of
Chapter 1 of the Internal Revenue Code of 1986, as amended.

    (c)  The Trust will not be subject to Federal income taxes.

<PAGE>

    (d)  For Federal income tax purposes, each item of Trust income will have
the same character in the hands of a Unitholder as it would have in the
hands of the Trustee.  Accordingly, to the extent that the income of the Trust
consists of interest excludable from Federal gross income under Section 103 of
the Internal Revenue Code of 1986, as amended, such income will be excludable
from Federal gross income of the Unitholders.

    (e)  For Federal income tax purposes, each Unitholder will have a
taxable event when, upon redemption or sale of his Units, he receives 
cash or other property.  Gain or loss will be measured by comparing the
proceeds of such a redemption or sale with the Unitholder's adjusted
basis for the Unit.  Before adjustment, generally this basis would be cost, if
the Unitholder had purchased his Units, plus his share of certain
advances by the Trustee to the Trust and certain accrued original issue
discount.  For Federal income tax purposes, if the Trustee disposes of a Trust
asset (whether by sale, payment on maturity, retirement, or otherwise), gain
or loss will be recognized by each Unitholder, and such gain or loss is
computed by measuring the Unitholder's aliquot share of the total
proceeds from the transaction against his basis for his fractional interest in
the asset disposed of (such basis being determined by apportioning the basis
for his Units among all of the Trust's assets ratably according to their
values as of the valuation date nearest the date on which he purchased the
Units).  A Unitholder's basis in his Units and the basis for his
fractional interest in each Trust asset must be reduced by the amount of his
aliquot share of interest received, if any, on Bonds delivered after the
Unitholder's settlement date to the extent that such interest accrued
on the Bonds during the period from the Unitholder's settlement date to
the date such Bonds are delivered to the Trust and must be reduced annually by
amortization of premiums, if any, on obligations held by the Trust.
 
    For the purposes of this letter:

    (a)  "Florida Code" shall mean the Florida Income Tax Code, Chapter 220,
Florida Statutes (Supp. 1992), as amended by Chapter 93-172, laws  of Florida. 
In the Florida Income Tax Code, Chapter 220, Florida Statutes, the Florida 
Legistature has adopted, retroactively to January 1, 1993, the Internal 
Revenue Code of 1986, as amended and in effect on January 1, 1993, as the 
Internal Revenue Code under which a Corporate Unitholder must compute its 
income for purposes of Florida corporate income taxation.

    (b)  "Code" shall mean the Internal Revenue Code of 1986, as
amended and in effect on January 1, 1993.

    (c)  "Non-Corporate Unitholder" shall mean a Unitholder
of the Florida Trust who is an individual not subject to the income
tax on corporations imposed by the Florida Code.

    (d)  "Corporate Unitholder" shall mean a Unitholder of the
Florida Trust that is a corporation subject to the income tax on
corporations imposed by the Florida Code.

    (e)  "Nonbusiness Income" is defined in the Florida Code and shall mean
rents and royalties from real or tangible personal property, capital gains,
interest, dividends, and patent and copyright royalties, to the extent that
they do not arise from transactions and activities in the regular course of a
Corporate Unitholder's trade or business.  The term Nonbusiness Income
does not include income from tangible and intangible property if the
acquisition, management, and disposition of the property constitute integral
parts of a Corporate Unitholder's regular trade or business operations,
or any amounts which could be included in apportionable income without
violating the due process clause of the United States Constitution.  For
purposes of this definition, "income" means gross receipts less all expenses
directly or indirectly attributable thereto.

    (f)  "Commercial domicile" shall mean the place that a corporation
maintains its principal place of business.  The term "commercial domicile" is
not specifically defined in Florida law for Florida corporate income tax
purposes.  However, the Florida Supreme Court has on at least two occasions
attributed meaning to this phrase, and recently enacted legislation amending
how Florida's intangible personal property tax law defines this phrase.  The 
Court has implied that a corporation's commercial domicile is its principal 
place of business, Department of Revenue v. Amrep Corp., 358 So.2d 1343, 1350
(Fla. 1978).  The Court has also stated in another case that a particular
corporation's domicile was in New York City where its head office and the
actual seat of its over-all business government was located and from where
its executive officers regularly exercised their complete authority and
controlled and directed all activities of the corporation, wherever carried
on.  Gay v. Bessemer Properties, Inc., 32 So.2d 587, 591 (Fla. 1947).  In
recently enacted legislation, a corporation is considered to acquire a
commercial domicile in Florida "when it maintains its chief or principal
office in [Florida] where executive or management functions are performed
or where the course of business operations is determined."  Section 199.175
(1)(b), Florida Statutes (1989).

    Based solely upon the assumptions you have permitted us to make and the
opinions of Messrs. Chapman and Cutler upon which you have authorized us to
rely, we are of the opinion that:

    (a)  For Florida state income tax purposes, the Trust will not be subject 
to the income tax imposed by the Florida Code so long as the Trust has no
income subject to federal income taxation.  In addition, political sub-
divisions of Florida do not impose any income taxes.

    (b)  Because Florida does not impose an income tax on individuals,
Non-Corporate Unitholders will not be subject to any Florida income tax
on income realized by the Trust.  Each Corporate Unitholder will be
subject to Florida income taxation on its share of the income realized by the
Trust notwithstanding the tax exempt status of the interest received
from any bonds under Section 103(a) of the Code or any other federal law,
unless the interest income constitutes Nonbusiness Income.  Nevertheless,
any Corporate Unitholder that has its commercial domicile in Florida will be
taxable under the Florida Code on its share of the Trust income which
constitutes Nonbusiness Income.

<PAGE>

    (c)  A Non-Corporate Unitholder will not be subject to Florida
income taxation with respect to gain realized when Bonds held in the Trust 
are sold, redeemed, or paid at maturity.  A Corporate Unitholder will
be subject to Florida income taxation with respect to gain realized on such a 
sale, redemption, or payment at maturity of a Bond held by the Trust, except
to the extent that the gain realized therefrom constitutes Nonbusiness
Income.  Nevertheless, to the extent that gains realized by a Corporate
Unitholder arising from a sale, redemption, or payment at maturity
constitute Nonbusiness Income, such gain will be taxable under the Florida
Code if the Corporate Unitholder's commercial domicile is in Florida.

    (d)  Any gain realized by a Non-Corporate Unitholder from the
redemption, sale, or other disposition of a Unit will not be subject to 
Florida income tax.  Any gain realized by a Corporate Unitholder from
the redemption, sale, or other disposition of a Unit will be subject to 
Florida income tax except to the extent that the gain realized therefrom
constitutes Nonbusiness Income. Nevertheless, to the extent that gain
realized by a Corporate Unitholder arising from a sale, redemption, or
other disposition of a Unit consitutes Nonbusiness Income, such gain will be
taxable under the Florida Code if the Corporate Unitholder's commercial
domicile is in Florida.
 
    (e)  A Non-Corporate Unitholder will not be subject to Florida
income taxation with respect to amounts paid under the Municipal Bond
Investors Assurance Corporation insurance policies representing interest on
defaulted obligations held by the Trustee.  A Corporate Unitholder
will be subject to Florida income taxation on its share of amounts paid under 
the Municipal Bond Investors Assurance Corporation insurance policies
representing maturing interest on defaulted obligations held by the Trustee
except to the extent that such payments constitute Nonbusiness Income as de-
fined in the Florida Code.  Nevertheless, any Corporate Unitholder that
has its commercial domicile in Florida will be taxable under the Florida Code
on its share of amounts paid under the Municipal Bond Investors Assurance
Corporation insurance policies representing maturing interest on defaulted
obligations held by the Trustee even if such payments constitute Nonbusiness
Income.

    (f)  A Non-Corporate Unitholder will not be subject to Florida
income taxation with respect to gain realized with respect to amounts paid 
under the Municipal Bond Investors Assurance Corporation
insurance policies representing principal on defaulted
obligations held by the Trustee.  A Corporate Unitholder will be
subject to Florida income taxation with respect to gain realized on its share 
of amounts paid under the Municipal Bond Investors Assurance Corporation
insurance policies representing principal on defaulted obligations held by
the Trustee except to the extent that the gain realized constitutes
Nonbusiness Income.  Nevertheless, gain realized, by
any Corporate Unitholder that has its commercial domicile in Florida,
on such payments representing principal on defaulted obligations held by the
Trustee, will be taxable under the Florida Code even if such payments
constitute Nonbusiness Income.
 
    (g)  Even if interest on indebtedness incurred or continued by a
Unitholder to purchase Units in the Trust is not deductible for Federal
income tax purposes, under Code section 265(a)(2) or any other law,  it will
be deductible, in effect, by Corporate Unitholders for Florida income tax
purposes if interest earned on the Units is other than Nonbusiness Income.
Nevertheless, if interest earned on the Units is Nonbusiness Income, any
Corporate Unitholder that has its commercial domicile in Florida may reduce
the amount of interest included as Nonbusiness Income by the amount of
expenses directly or indirectly attributable thereto.

    (h)  Trust Units will be subject to Florida estate tax only if owned by
Florida residents and may be subjected to Florida estate tax if owned by other
decendents.  However, the Florida estate tax is limited to the amount of the
credit allowable under the applicable Federal Revenue Act (currently Section
2011 (and in some cases Section 2102) of the Internal Revenue Code of 1986,
as amended) for death taxes actually paid to the several states.

    (i)  Neither the Bonds nor the Units will be subject to the Florida ad
valorem tax or Florida sales or use tax.

    (j)  Because Bonds issued by the State of Florida, its political
subdivisions or by the Commonwealth of Puerto Rico, Guam, or the Virgin
Islands, are exempt from Florida intangible personal property taxation under
Chapter 199, Florida Statutes, the Trust will not be subject to Florida
intangible personal property tax.  In addition, the Unitholders will not be
subject to Florida intangible personal property tax on the Units.

    (k)  The sale, redemption, or other disposition by the Trust of Bonds
issued by the State of Florida, the Commonwealth of Puerto Rico, Guam, or the
Virgin Islands, will not subject either the Trust or the Unitholders to
Florida documentary stamp tax.

    (l)  The issuance and sale of the Units by the Trust will not
subject either the Trust or the Unitholders to Florida documentary
stamp tax.
 
    (m)  The transfer of Units by a Unitholder will not be
subject to Florida documentary stamp tax.

<PAGE>

    This opinion is limited to the law in effect as of the date hereof and
we assume no responsibility for changes in the law that may become effective
subsequent to the date of this opinion.  Furthermore, this letter is not to be
construed as a prediction of a favorable outcome with respect to any issue for
which no favorable prediction is made herein, or as a guaranty of any tax
result, or as offering an assurance or guaranty that a Florida state or local
taxing authority might not differ with our conclusions, or raise other
questions or issues upon audit, or that such action may not be judicially
sustained.

    We have not examined any of the Bonds to be deposited in the Fund and held
by the Trust, and we express no opinion as to whether the interest on any such
Bonds would, in fact, be tax-exempt if directly received by a 
Unitholder; nor have we made any review of the proceedings relating to
the issuance of the Bonds or the basis for the bond counsel opinions or the 
opinions of Messrs. Chapman and Cutler referred to herein.

    We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (File No. 33-52327) and to the reference to our
firm in such Registration Statement and the Prospectus included
therein. In giving such consent, we do not thereby admit that we are within 
the category of persons whose consent is required by Section 7 of the 
Securities Act of 1933, as amended, and the rules and regulations thereunder.

_______________________
(N.1) Section 2.01 of the Indenture provides that if the Depositor fails to
deposit Bonds, through no fault of its own, the Depositor may, as provided in
Section 3.14 of said Indenture, purchase replacement bonds (referred to as
"New Bonds") that will also be tax exempt bonds issued by the same states or 
their respective political subdivisions.


Very truly yours,



CARLTON FIELDS WARD EMMANUEL SMITH & CUTLER, P.A.
By: David P. Burke


<PAGE>

EXHIBIT 3.3

(ON EDWARDS & ANGELL LETTERHEAD)

4/13/94

Nuveen Tax-Exempt Unit Trust,
  Series 724
In care of John Nuveen & Co.
  Incorporated
333 West Wacker Drive
Chicago, IL  60606

Attention of James J. Wesolowski, Esq.
             Vice President, General Counsel
             and Secretary

United States Trust Company of New York,
as Trustee of Nuveen Tax-Exempt Unit Trust, Series 724
770 Broadway
New York, NY  10003

                 Re:   
                      Massachusetts Insured Trust 112

Dear Sirs:

    We have acted as special counsel, with respect to Massachusetts State and
local tax matters, to the above mentioned Trust(s) ("Trust(s)") of Nuveen Tax-
Exempt Unit Trust, Series 724 (the "Fund") concerning a Registration
Statement (No. 33-52327) on Form S-6 under the Securities Act of 1933, as
amended (the "Registration Statement"), covering the issuance by the Fund
of Units of fractional undivided interest in the Fund.

    We have not been furnished with a copy of the Registration Statement or
the prospectus, which is a part of the Registration Statement, relating to the
issuance by the Fund of the Units.  However, John Nuveen & Co. Incorporated
has authorized us to assume that the proposed offer and sale of the Units will
be carried out in that same manner and upon the same terms and conditions as
that described in the prospectus for the Nuveen Tax-Exempt Unit Trust, Series
351 - Massachusetts Trust 182, dated November 6, 1985.

    We have been furnished with a copy of the opinion of Chapman and Cutler
on the federal tax status of the Fund, its constituent Trusts and their
Unitholders.

    In addition, we have also examined applicable Massachusetts law and a
ruling of the Massachusetts Department of Revenue dated February 7, 1985,
relating to Multi-State Series 162.

     Based on the foregoing it is our opinion that under existing law and
administration of the affairs of the Trust(s):

     A.  For Massachusetts income tax purposes, each Trust will be treated
         as a corporate trust under Section 8 of Chapter 62 of the
         Massachusetts General Laws ("M.G.L.") and not as a grantor trust
         under Section 10(e) of M.G.L. Chapter 62.

     B.  The Trust(s) will not be held to be engaging in business in
         Massachusetts within the meaning of said Section 8 and will,
         therefore, not be subject to Massachusetts income tax.
     C.  Unitholders who are subject to Massachusetts income taxation
         under M.G.L. Chapter 62 will not be required to include their
         respective shares of the earnings of or distributions from the
         Trust(s) in their Massachusetts gross income to the extent that such
         earnings or distributions represent tax-exempt interest excludable
         from gross income for federal income tax purposes received by the
         Trust(s) on obligations issued by Massachusetts, its counties,
         municipalities, authorities, political subdivisions or
         instrumentalities or by Puerto Rico, the Virgin Islands, Guam,
         the Northern Mariana Islands or other possessions of the United
         States within the meaning of Section 103(c) of the Internal Revenue
         Code of 1986, as amended ("Obligations").

     D.  In the case of a Massachusetts Insured Trust, Unitholders who are
         subject to Massachusetts income taxation under M.G.L. Chapter 62
         will not be required to include their respective shares of the
         earnings of or distributions from such Trust in their Massachsetts
         gross income to the extent that such earnings or distributions are
         derived from the proceeds of insurance obtained by the Sponsor of
         such Trust or by the issuer or underwriter of an obligation held
         by such Trust that represent maturing interest on defaulted
         obligations held by the Trustee, if and to the same extent that
         such earnings or distributions would have been excludable from the
         gross income of such Unitholders if derived from interest paid by
         the issuer of the defaulted obligation.

     E.  Unitholders which are corporations subject to taxation
         under M.G.L. Chapter 63 will be required to include their
         respective shares of the earnings of or distributions from the
         Trust(s) in their Massachusetts gross income to the extent that such
         earnings or distributions represent interest from bonds, notes or
         indebtedness of any state, including Massachusetts, except for
         interest which is specifically exempted from such tax by the acts
         authorizing issuance of said Obligations.

     F.  Each Trust's capital gains and/or capital losses which are includable
         in the federal gross income of Unitholders who are
         subject to Massachusetts income taxation under M.G.L. Chapter 62,
         or Unitholders which are corporations subject to
         Massachusetts taxation under M.G.L. Chapter 63 will be included as
         capital gains and/or losses in the Unitholders' Massachusetts
         gross income, except for capital gain which is specifically exempted
         from taxation under such Chapters by the acts authorizing issuance of
         said Obligations.

     G.  Unitholders which are corporations subject to tax under
         M.G.L. Chapter 63 and which are tangible property corporations will
         not be required to include the Units when determining the value
         of their tangible property; such Unitholders which are
         intangible property corporations will be required to include the
         Units when determining their net worth.

     H.  Gains or losses realized on sales or redemptions of Units by
         Unitholders who are subject to Massachusetts income taxation
         under M.G.L. Chapter 62 or Unitholders which are corporations
         subject to Massachusetts taxation under M.G.L. Chapter 63 will be
         includable in their Massachusetts gross income.  In determining such
         gain or loss Unitholders will, to the same extent required for
         Federal tax purposes, have to adjust their tax bases for their Units
         for accrued interest received, if any, on Obligations delivered to
         the Trustee after the Unitholders pay for their Units, for
         amortization of premiums, if any, on Obligations held by the
         Trust(s), and for accrued original issue discount with respect to
         each Obligation which, at the time the Obligation was issued, had
         original issue discount.

     I.  The Units of the Trust(s) are not subject to any property tax levied
         by Massachusetts or any political subdivision thereof, nor to any
         income tax levied by any such political subdivision.  They are
         includable in the gross estate of a deceased Unitholder who is a
         resident of Massachusetts for purposes of the Massachusetts Estate
         Tax.

     The foregoing opinions are based upon present provisions of federal and
Massachusetts law, administrative interpretations thereof and court decisions.
With respect to Unitholders which are corporations subject to
Massachusetts taxation under M.G.L. Chapter 63, no opinion is rendered on the
includability of their respective shares of the earnings of or distributions
from the Trust(s) in their Massachusetts gross income to the extent that such
earnings or distributions represent interest from bonds, notes, or indebted-
ness of Puerto Rico, the Virgin Islands, Guam, the Northern Mariana Islands or
other possessions of the United States within the meaning of Section 103(c)
of the Internal Revenue Code of 1986, as amended.

     We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to our firm in such Registration
Statement and the Prospectus included therein.

Very truly yours,



EDWARDS & ANGELL


<PAGE>

EXHIBIT 3.3


(ON EDWARDS & ANGELL LETTERHEAD)

4/13/94

Nuveen Tax-Exempt Unit Trust,
Series 724
In care of John Nuveen & Co. Incorporated
333 West Wacker Drive
Chicago, IL 60606

Attention of James J. Wesolowski, Esq.
             Vice President, General Counsel
             and Secretary

United States Trust Company of New York,
as Trustee of Nuveen Tax-Exempt Unit Trust,
Series 724
770 Broadway
New York, NY  10003

Re:  
    New York Insured Trust 215
     
     

Dear Sirs:

    We have acted as special counsel, with respect to New York State and New
York City tax matters, to the above Trusts(s) ("New York Trust(s)") of Nuveen
Tax-Exempt Unit Trust, Series 724 (the "Fund") concerning a
Registration Statement (No. 33-52327) on Form S-6 under the Securities Act of
1933, as amended (the "Registration Statement"), covering the issuance by the
New York Trusts(s) of units of fractional undivided interest in the New York
Trust(s)( "Units").
    We have not been furnished with a copy of the Registration Statement or
the prospectus, which is a part of the Registration Statement, relating to the
issuance by the New York Trust(s) of the Units.  However, John Nuveen & Co.
Incorporated has authorized us to assume that the proposed offer and sale of
the Units will be carried out in that same manner and upon the same terms and
conditions as that described in the prospectus for the Nuveen Tax Exempt Unit
Trust, Insured Series 193, dated May 19, 1989, which we were furnished and did
examine. In the case of a Fund which contains a New York Insured Trust or
New York Intermediate Insured Trust, we also were not furnished the
Insurance Agreement (the "Policy") between the Municipal Bond Investors
Assurance Corporation (the "Insurer"), the Depositor and the Trustee.
However, John Nuveen & Co. Incorporated has authorized us to
assume that the Policy will be implemented at the closing of the Trust and
be in substance and form materially similiar to the Policy applicable to
New York Insured Trust 108, which we were furnished and did examine.

    We have not been furnished with a copy of the Opinion of Chapman & Cutler
on the Federal Tax status of the Fund, its constituent Trusts and their
Unitholders.  However, John Nuveen & Co. Incorporated has authorized us to
assume that such Opinion will be in substance and form materially similar to
that which was issued in connection with Nuveen Tax Exempt Unit Trust, Insured
Series 193 dated May 19, 1989, which we were furnished and did examine.

    Based on the foregoing, we are of the opinion that, for purposes of New
York State and New York City franchise taxes, a New York Trust will be a
trust not an association taxable as a corporation; the proposed activities
of a New York Trust will not constitute doing business within the meaning
of section 208.1 of the New York Tax Law or section R46-3.0 of the N.Y.C.
Administrative Code; a New York Trust will not be subject to New York State
or New York City franchise tax imposed on business corporations; a New York
Trust will not be subject to the unincorporated business income tax imposed
by Article 23 of the N.Y. Tax Law or Chapter 46, Title S of the N.Y.C.
Administrative Code; and the income of a New York Trust will be treated as
income of the Unitholders.

    We are further of the opinion that, under existing laws and
administration of the affairs of the New York Trust(s):

    (A)  Interest on obligations issued by New York State, a political
subdivision thereof, Puerto Rico, the Virgin Islands, Guam, the Northern
Mariana Islands, or other possessions of the United States within the meaning
of Section 103(c) of the Internal Revenue Code of 1986, as amended,
("Obligations") which would be exempt from New York State or New York City
personal income tax if directly received by a Unitholder, will retain its
status as tax-exempt interest when received by a New York Trust and
distributed to such Unitholder;

    (B) Interest (less amortizable premium, if any) derived
from a New York Trust by a Unitholder who is a resident of New York State
(or New York City) in respect of Obligations issued by states other than New
York (or their political subdivisions) will be subject to New York State
(or New York City) personal income tax;

<PAGE>


    (C) A Unitholder who is a resident of New York State (or New York City)
will be subject to New York State (or New York City) personal income tax with
respect to gains realized when Obligations held in the Unitholder's respective
New York Trust are sold, redeemed or paid at maturity or when the Unitholder's
Units are sold or redeemed; such gain will equal the proceeds of sale,
redemption or payment less the tax basis of the Obligation or Unit
(adjusted to reflect (a) the amortization of premium or discount (if any) on
Obligations held by the New York Trust, (b) accrued original issue discount
with respect to each Obligation which, at the time the Obligation was issued,
had original issue discount, and (c) the deposit of Obligations with accrued
interest in the New York Trust after the Unitholder's settlement date);

    (D) Interest or gain from a New York Trust derived by a
Unitholder who is not a resident of New York State (or New York City)
will not be subject to New York State (or New York City) personal income
tax, unless the Units are property employed in a business, trade,
profession or occupation carried on in New York State (or New York City);

    (E)  In the case of a New York Insured Trust or New York Intermediate
Insured Trust, amounts paid under the Policies representing maturing interest
on defaulted Obligations held by the Trustee in the Trust will be excludable
from New York State and New York City income if, and to the same extent as,
such interest would have been excludable if paid by the respective
issuer; and

    (F) Amounts distributable from a New York Trust which are, pursuant to
a Unitholder's election, automatically reinvested in Nuveen Municipal
Bond Fund, Inc. will be treated as if actually distributed to and reinvested 
by such Unitholder.

    Because of the requirement that tax cost basis be adjusted as discussed in
(C) above, under some circumstances a Unitholder may realize taxable
gain when his Units are sold or redeemed for an amount equal to or
less than his original cost.

    Although interest on Obligations issued by New York (or a political
subdivision thereof) would generally be exempt from New York State and
New York City tax, a special limitation may apply with respect to private
activity bonds which are not qualified within the meaning of section 103(b)(1)
of the Internal Revenue Code of 1986, as amended.  The interest on such bonds,
to the extent received by a Unitholder who is a "substantial user" (or person
related to such user) of the facilities financed by such bonds, will not be
exempt from New York State and New York City tax for any period during which
such bonds are beneficially held by such "substantial user" or "related
person".

    As an additional matter, if borrowed funds are used to purchase Units
in a New York Trust, all (or part) of the interest on such indebtedness will
not be deductible for New York State and New York City tax purposes.  The
purchase of Units may be considered to have been made with borrowed funds even
though such funds are not directly traceable to the purchase of Units in any
New York Trust.

    We are further of the opinion that, for purposes of the New York State and
New York City franchise tax on corporations, Unitholders which are
subject to such tax will be required to include in their entire net income any
interest or gains distributed to them in respect of obligations of any state
or political subdivision thereof, including New York.  No opinion is rendered
on the includability in entire net income of interest distributed to such
Unitholders in respect of obligations issued by Puerto Rico, the Virgin
Islands, Guam, the Northern Mariana Islands or other possessions of the
United States within the meaning of Section 103(c) of the Internal Revenue
Code of 1986, as amended.

    The foregoing opinions are based upon present provisions of Federal,
New York State and New York City law, administrative interpretations thereof
and court decisions.

    In connection with this offering, we have not examined any of the
obligations to be deposited in the New York Trust(s), and express no opinion
whether the interest on any such obligations is, in fact, exempt from Federal,
New York State, or New York City income taxation, or that such interest would 
be tax-exempt under Federal, New York State, or New York City law if directly
received by a Unitholder, nor have we made any review of the proceedings
relating to the issuance of any such obligations.

    We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to our firm in such Registration
Statement and the Prospectus included therein.

Very truly yours,



EDWARDS & ANGELL


<PAGE>

EXHIBIT 3.3


(ON SQUIRE, SANDERS & DEMPSEY LETTERHEAD)

4/13/94

John Nuveen & Co. Incorporated
333 West Wacker Drive
Chicago, Illinois 60606

U.S. Trust Company of New York
770 Broadway
New York, New York 10003

RE:  Nuveen Tax-Exempt Unit Trust, Series 724
      
     Ohio Insured Trust 113

Gentlemen:

    You have requested our opinion as to the Ohio tax aspects of the above-
captioned Trust(s) (the "Ohio Trust(s)"), which is(are) part of the
Nuveen Tax-Exempt Unit Trust --  Series 724 (the "Fund").  We understand
that the Fund is organized under the Trust Indenture and Agreement, dated the
date hereof, between John Nuveen & Co. Incorporated, as Depositor, and United
States Trust Company of New York, as Trustee.  We further understand that (i)
the Fund will issue Units of fractional undivided interests in several state
trusts, including the Ohio Trust(s), (ii) the Units will be purchased by
various investors ("Unitholders"), (iii) each Unit of the Ohio Trust(s)
represents a fractional undivided interest in the principal and net income of
the Ohio Trust(s) in the ratio of ten Units for each $1,000 of principal
amount of the obligations initially acquired by the Ohio Trust(s), and (iv)
each state trust will be administered as a distinct entity with separate
certificates, investments, expenses, books and records.

    In addition, we understand that (i) the Ohio Trust(s) is(are) comprised
primarily of interest-bearing obligations issued by or on behalf of the State
of Ohio, political subdivisions thereof, or agencies or instrumentalities
thereof ("Ohio Obligations"), or by the governments of Puerto Rico, the Virgin
Islands, the Northern Mariana Islands or Guam ("Territorial Obligations")
(collectively, "Obligations"), (ii) at all times at least fifty percent of the
total assets of the Ohio Trust(s) will consist of Ohio Obligations, or similar
obligations of other states or their subdivisions, and (iii) distributions of
interest received by the Ohio Trust(s) will be made semi-annually unless the
Unitholder elects otherwise.  We further understand that, based on the opinion
of bond counsel with respect to each issue of Ohio Obligations held or to be
held by the Ohio Trust, rendered on the date of issuance thereof, interest on
each such issue is excluded from gross income for federal income tax purposes
under Section 103(a) of the Internal Revenue Code of 1986, as amended ("Code"),
or other provisions of federal law, provided that with respect to certain Ohio
and Territorial Obligations, certain representations are accurate and certain
covenants are satisfied.

 
    We understand that Chapman and Cutler has rendered an opinion that
for federal income tax purposes the Ohio Trust(s) will not be taxable as (an)
association(s) but will be governed by the provisions of subchapter J
(relating to trusts) of Chapter 1 of the Code; each Unitholder will be
considered the owner of a pro rata portion of the Unitholder's respective
Ohio Trust under Section 676(a) of the Code; the Ohio Trust(s) will not be
subject to federal income tax; each Unitholder will be considered to have
received his pro rata share of interest on the underlying bonds in the
Unitholder's respective Ohio Trust when it is received by such Ohio Trust;
and each Unitholder will have a taxable event when the Unitholder's respective
Ohio Trust disposes of an underlying obligation (whether by sale, exchange,
redemption, or payment at maturity) or when the Unitholder redeems or sells
his Units.
 
    Based on the foregoing and upon an examination of such other documents and
an investigation of such other matters of law as we have deemed necessary, we
are of the opinion that under existing Ohio law:

    1.   The Ohio Trust(s) is(are) not taxable as (a) corporation(s) or
otherwise for purposes of the Ohio personal income tax, Ohio school district
income taxes, the Ohio corporation franchise tax, or the Ohio dealers in
intangibles tax.

    2.   Income of the Ohio Trust(s) will be treated as the income of the
Unitholders for purposes of the Ohio personal income tax, Ohio school
district income taxes, Ohio municipal income taxes and the Ohio corporation
franchise tax in proportion to the respective interest therein of each
Unitholder.

    3.   Interest on Obligations held by the Ohio Trust(s) is exempt from the
Ohio personal income tax, Ohio municipal income taxes and Ohio school district 
income taxes, and is excluded from the net income base of the Ohio corporation 
franchise tax when distributed or deemed distributed to Unitholders.

    4.   Proceeds paid under insurance policies, if any, to the Trustee of
the Ohio Trust(s) representing maturing interest on defaulted obligations held
by the Ohio Trust(s) will be exempt from the Ohio personal income tax, Ohio
school district income taxes, Ohio municipal income taxes and the net income
base of the Ohio corporation franchise tax if, and to the same extent as, such
interest would be exempt from such taxes if paid directly by the issuer of
such obligations.

     5.  Gains and losses realized on the sale, exchange or other disposition
by the Ohio Trust(s) of Ohio Obligations are excluded in determining adjusted
gross and taxable income for purposes of the Ohio personal income tax, Ohio
municipal income taxes and Ohio school district income taxes, and are excluded
from the net income base of the Ohio corporation franchise tax when
distributed or deemed distributed to Unitholders.


    We have not examined any of the obligations to be deposited in the Ohio
Trust(s) and express no opinion as to whether such obligations, interest
thereon, or gain from the sale or other disposition thereof would in fact be
exempt from any federal or Ohio taxes if such obligations were held, or such
interest or gain were received, directly by the Unitholders.

    We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (No. 33-52327) relating to the Units referred to
above, and to the reference to our firm as special Ohio tax counsel in said
Registration Statement and in the Prospectus contained therein.

Respectfully submitted,



SQUIRE, SANDERS & DEMPSEY

<PAGE>

EXHIBIT 3.3


(On Dechert Price & Rhoads Letterhead)

4/13/94


John Nuveen & Co. Incorporated
333 W. Wacker Drive
Chicago, Illinois  60606

RE:  Nuveen Tax-Exempt Unit Trust, Series 724
      
     Pennsylvania Insured Trust 178

Gentlemen:

    You have requested our opinion as to the Pennsylvania tax aspects of the
above-captioned Trust(s) (the "Pennsylvania Trust(s)") which is (are) a part
of the Nuveen Tax-Exempt Unit Trust Series 724 ("Fund").  The Fund is
organized under the Trust Indenture and Agreement, of even date, between John
Nuveen & Co. Incorporated, as Depositor, and United States Trust Company of
New York, as Trustee.  The Fund will contain several trusts, including the
Pennsylvania Trust(s), which will issue Units of fractional undivided
interests.  The Units will be purchased by various investors ("Unit Holder").
Each Unit of the Pennsylvania Trust(s) represents a fractional undivided
interest in the principal and net income of such Trust(s) in the ratio of ten
Units for each $1,000 of value of the obligations initially acquired by such
Trust(s).  Each Pennsylvania Trust will be administered as a distinct entity
with separate certificates, investments, expenses, books and records.
 
    The proceeds of the sale of the Units will be invested primarily in
interest-bearing obligations issued by or on behalf of the Commonwealth of
Pennsylvania, its agencies and instrumentalities, or political subdivisions
thereof, including any county, city, borough, town, township, school disrict,
municipality, and local housing or parking authority in the Commonwealth of
Pennsylvania or issued by Puerto Rico, the Virgin Islands, Guam or the
Northern Mariana Islands ("Bonds").  Distributions of the interest received by
the Trust will be made semi-annually unless the Unit Holder elects otherwise.
In the opinion of bond counsel to each issuer, the interest on all bonds in
the Trust is exempt fromn federal income tax under existing law.

    You have advised us that for federal income tax purposes each Pennsylvania
Trust will not be taxable as an association but will be governed by the
provisions of Subchapter J (relating to Trusts) of Chapter 1 of the Internal
Revenue Code of 1986.  Each Unit Holder will be considered the owner of a pro
rata portion of the Unit Holder's respective Pennsylvania Trust and will be
subject to tax on the income therefrom under the provisions of Subpart E of
Subchapter J of Chapter 1 of the Internal Revenue Code of 1986. A Pennsylvania
Trust itself will not be subject to federal income taxes. For federal income
tax purposes, each item of trust income will have the same character in the
hands of a Unit Holder as it would have in the hands of the Trustee.
Accordingly, to the extent that the income of a Pennsylvania Trust consists of
interest excludable from gross income under Section 103 of the Internal
Revenue Code of 1986, such income will be excludable from federal gross income
of the Unit Holder.

    Based upon the above facts, it is our opinion that for Pennsylvania state
and local tax purposes, a Pennsylvania Trust will be recognized as a trust not
taxable as a corporation.  It will, therefore, not be subject to the 
Pennsylvania Capital Stock/Franchise Tax or the Pennsylvania Corporate Net
Income Tax.  Since all of the income of a Trust is either itself income exempt
from Pennsylvania Personal Income Tax, as described below, or is required by 
the terms of the Trust to be distributed to the holders of Units, a Trust 
should not be subject to Pennsylvania Personal Income Tax.  The Philadelphia
School District Investment Income Tax described below, is not imposed on 
trusts.

    Various personal property taxes are in effect in Pennsylvania, however, 
each of them exempts, inter alia, Bonds, cash, checking and savings accounts 
in and certificates of deposit issued by commercial banks, savings 
institutions or trust companies and United States Treasury obligations.  In
general, these taxes apply to a specified list of items of intangible 
personal property including, inter alia, mortgages and other evidences of
indebtedness and shares of stock issued by business corporations not doing
business in Pennsylvania.  The taxes referred to above include the County 
Personal Property Tax imposed on residents of Pennsylvania by the Act of 
June 17, 1913, P.L. 507, as amended, the additional personal property taxes 
imposed on Pittsburgh residents by the School District of Pittsburgh under 
the Act of June 20, 1947, P.L. 733, as amended, and by the City of Pittsburgh 
by Ordinance No. 599 of December 28, 1967, under the Act of December 31, 1965,
P.L. 1257, and any additional personal property taxes that the School District
of Philadelphia may reimpose on Philadelphia residents under the authority 
contained in the Act of May 23, 1949, P.L. 1676, as amended.  Units evidencing 
fractional undivided interests in a Pennsylvania Trust will not be subject to 
any of these personal property taxes to the extent of that proportion of a 
Pennsylvania Trust represented by Bonds and other exempt assets. Only that 
proportion of the Units represented by taxable assets will be subject to the 
personal property taxes.  Pennsylvania Trust Units may be taxable under the 
Pennsylvania inheritance and estate taxes.
 
    The interest and gain from obligations issued by the Commonwealth of
Pennsylvania or by its political subdivisions or by any public authority of
either are exempt from tax under the Act of August 31, 1971, P.L. 395, 
Act No. 94.  However, that Act was repealed by the Act of December 3, 1993,
P.L. 473, Act No. 68 ("Act 68 of 1993") with respect to obligations issued
on or after February 1, 1994.  Pursuant to Act 68 of 1993, profits, gains or
income derived from the sale, exchange or other disposition of exempt 
government obligations issued after February 1, 1994 will be subject to
state or local taxation although interest and "income" derived from the
exempt obligations will continue to be exempt from all state and local 
taxation.  Therefore, the proportion of income representing interest from 
Bonds distributable to Unit Holders is not taxable under the Pennsylvania
Personal Income Tax imposed by Article III of the Pennsylvania "Tax Reform
Code of 1971", as amended by the Act of August 31, 1971, P.L. 362, Act No. 93,
or under the Corporate Net Income Tax imposed on corporations by Article IV of
the Tax Reform Code.  Similarly, such interest will not be taxable under the 
Philadelphia School District Investment Income Tax imposed on

<PAGE>

Philadelphia resident individuals under the authority of the Act of August 9,
1963, P.L. 640, as implemented by Section 19-1804 of the Philadelphia Code,
as amended, and resolutions of the Board of Education of the School District
of Philadelphia made pursuant to the ordinances, and such interest will not be
subject to any of the taxes on net income from business activities in 
Philadelphia under Philadelphia Code Sections 19-1500 and 19-2600, imposing
a Net Profits Tax and a Business Privilege Tax respectively.  The City and
School District of Pittsburgh do not impose any taxes on unearned income.
 
    Under the Pennsylvania Personal Income Tax Law, personal income tax is
imposed upon the following specified classes of income:  (1) compensation for
services, (2) net profits from the operation of a business, profession, or 
other activity, (3) net gains or income from the disposition of property, (4) 
net gains or income in the form of rents and royalties, (5) dividends, (6) 
interest from obligations not otherwise exempt, (7) gambling and lottery
winnings, (8) net gains or income from estates or trusts which fall under any 
of the preceding classifications.  Although there is no published authority
on the question, it is our opinion that any insurance proceeds paid in lieu of
interest on defaulted tax-exempt obligations will be exempt from Pennsylvania 
Personal Income Tax either as payment in lieu of tax-exempt interest or as 
payments of insurance proceeds which are not included in any of the classes 
of income specified as taxable under the Pennsylvania Personal Income Tax 
Law.  Since Pennsylvania Corporate Net Income Tax is imposed upon the 
corporation's net income for federal income tax purposes, because such
insurance proceeds will be excluded from the federal income tax base, such
proceeds will not be subject to the Pennsylvania Corporate Net Income Tax.
Finally, since proceeds from insurance policies are expressly excluded from
the Philadelphia School District Investment Income Tax, insurance proceeds
paid to replace defaulted payments under any Bonds held by the Pennsylvania
Trust(s) will not be subject to this tax.

    Under Act 68 of 1993, a Unit Holder's share of gain upon disposition of a 
Bond issued on or after February 1, 1994 by the Pennsylvania Trust, whether 
by sale, exchange, redemption or payment at maturity, will be taxable 
under the Pennsylvania Personal Income Tax.  Gains on the disposition of Bonds
issued before February 1, 1994 will continue to be exempt.  See 72 P.S. Section
7303(a)(3) and 61 Pa. Code Section. 121.9(b)(3).  While there is no published 
authority with respect to the treatment of such gains for purposes of the 
Philadelphia School District Investment Income Tax, it is our opinion that
gains upon dispositions of Bonds issued before February 1, 1994 are exempt from 
this tax under Act of August 31, 1971, P.L. 395, Act No. 94, and, if the 
question were litigated, the Pennsylvania courts should so hold.  Gains on the 
disposition of Bonds issued on or after February 1, 1994 will be taxable.  
In any event, the Philadelphia School District Investment Income Tax has no
application to any gain on the disposition of property held for more than
six months. 

    In C.C. Collings & Co., Inc. v. Commonwealth of Pennsylvania, 514 A.2d 1373
(1986), and two related cases, the Supreme Court of Pennsylvania held that 
gains or losses from the sale of obligations of the Commonwealth of 
Pennsylvania, its political subdivisions, instrumentalities and agencies are 
not subject to the Corporate Net Income Tax.  Profits, gains or income
derived from the sale, exchange or other disposition of those exempt 
obligations issued on or after February 1, 1994, however, will be subject
to tax pursuant to Act 68 of 1993.  

    There is no published authority under any of the Pennsylvania state and
local income taxes described above with respect to gain from the redemption
or sale of a Unit.  To the extent that such gain represents the
Unit Holder's share of any unrealized gain on the Bonds issued before 
February 1, 1994 and held by the Trust, it is our opinion that such gain is 
exempt from the above-described Pennsylvania state and local income taxes and, 
if the question were litigated, the Pennsylvania courts should so hold.  To the
extent that such gain is attributable to unrealized gain on Bonds issued on 
or after February 1, 1994, such gain will be taxable under such taxes.  In any
event, the Philadelphia School District Investment Income Tax has no 
application to any gain on the disposition of property held for more than six 
months.
 
    Interest on obligations of Puerto Rico, the Virgin Islands, Guam, or the
Northern Mariana Islands is, under federal law, exempt from taxation by states
and municipalities.  Federal law does not expressly exclude from taxation gain
realized upon the disposition of such obligations.  Therefore, a disposition
of such obligations by a Pennsylvania Trust could be a taxable event to a
Holder under each of the Pennsylvania state and local income taxes discussed
in the preceding paragraphs.  See Willcuts v. Bunn, 282 U.S. 216 (1931); U.S.
v. Stewart, 311 U.S. 60 (1940).  Similarly, to the extent that gain on the
redemption or sale of a Unit represents unrealized gain on such obligations
held by a Pennsylvania Trust, such gain could be taxable. 

    We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (No. 33-52327) relating to the Units referred to
above, and to the reference to our firm as special Pennsylvania tax counsel in
said Registration Statement and in the related Prospectus.

Very truly yours,


DECHERT PRICE & RHOADS

<PAGE>

EXHIBIT 4.1

(ON STANDARD & POOR'S CORPORATION LETTERHEAD)

4/13/94

John Nuveen & Company
333 West Wacker Drive
Chicago, Illinois  60606

Re:     NUVEEN TAX EXEMPT UNIT TRUST, SERIES 724

        This is in response to your requests regarding the above-captioned
fund which consists of separate underlying insured and traditional unit
investment trusts, SEC file # 33-52327.

        INSURED TRUSTS.

        With respect to the insured trusts we have reviewed the information
presented to us and have assigned a 'AAA' rating to the units of each insured
trust and a 'AAA' rating to the securities contained in each insured trust.
The ratings are direct reflections of the portfolio of each insured trust,
which will be composed soley of securities covered by bond insurance policies
that insure against default in the payment of principal and interest on the
securities contained in each insured trust for as long as they remain
outstanding.  We understand that the bonds described in the prospectus are the
same as those in the attatched list.  Since such policies have been issued by
MBIA which has been assigned a 'AAA' claims paying ability rating by S&P, S&P
has assigned a 'AAA' to the units of each insured trust and a 'AAA' rating to
the securities contained in each trust.

        You have permission to use the name of Standard & Poor's Corporation
and the above-assigned rating in connection with your dissemination of
information relating to the insured trusts provided that it is understood
that the ratings are not 'market' ratings nor recommendations to buy, hold or
sell the units of the insured trusts or the securities contained in the
insured trusts.  Further, it should be understood the rating on the units of
each insured trust does not take into account the extent to which the trust's
expenses or portfolio asset sales for less than the principal required to be
paid on the portfolio assets.  S&P reserves the right to advise its own
clients, subscribers, and the public of the ratings.  S&P relies on the
sponsor and its counsel, accountants, and other experts for the accuracy and
completeness of the information submitted in connection with the ratings.  S&P
does not independently verify the truth or accuracy of any such information.

        This letter evidences our consent to the use of the name of Standard &
Poor's Corporation in connection with the rating assigned to the units of each
insured trust in the registration statement or prospectus relating to the
units and the trusts.  However, this letter should not be construed as a
consent by us, within the meaning of section 7 of the Securities Act of 1933,
to the use of Standard and Poor's Corporation in connection with the ratings
assigned to the securities contained in the insured trusts.  You are hereby
authorized to file a copy of this letter with the Securities and Exchange
Commission.

        Please be certain to send us three copies of your final prospectus as
soon as it becomes available.  Should we not receive them within a reasonable
time after the closing or should they not conform to certification received by
us, we reserve the right to nullify the ratings.


<PAGE>



        TRADITIONAL TRUSTS.

        With respect to the traditional unit investment trusts within the
above-captioned fund, we have reviewed the information presented to us and we
hereby confirm that the ratings indicated in the prospectus as being assigned
by Standard & Poor's Corporation to the securities contained in each
traditional trust of such fund are, according to our records, the ratings
currently assigned by Standard & Poor's Corporation to such securities.  You
understand that Standard & Poor's Corporation has not consented to, and will
not consent to, being named as "expert" under the federal securities laws,
including and without limitation, Section 7 of the Securities Act of 1933,
with respect to the ratings on any securities contained in any of the
traditional trusts.

        Please note that the 'AAA' rating assigned to the units of each
insured trust does not apply to the units of any of the traditional trusts.


                                          STANDARD & POOR'S CORPORATION

                                          
                                          Vincent S. Orgo



 
<PAGE>

EXHIBIT 4.2

(On Kenny Information Systems, Inc. Letterhead)

4/13/94

John Nuveen & Company
333 West Wacker Drive
Chicago, IL 60606

Re:  Nuveen Tax Exempt Unit Trust, Series 724

Gentlemen:

     We have examined the registration statement File No. 33-52327,
for the above captioned trust.  We hereby acknowledge that
Kenny S&P Services, a division of Kenny Information Systems, Inc.
is currently acting as the evaluator for the trust. We hereby
consent to the use in the Registration Statement of the reference
to Kenny S&P Evaluation Services, a division of Kenny Information
Systems, Inc. as evaluator.
     In addition, we hereby confirm that the ratings indicated in the
Registration Statement for the respective bonds comprising the trust
portfolio are the ratings currently indicated in our KENNYBASE database.

     You are hereby authorized to file a copy of this letter with the
Securities and Exchange Commission.

Sincerely,


F.A. Shinal



<PAGE>


EXHIBIT 4.3

(ON CARTER LEDYARD & MILBURN LETTERHEAD)

4/13/94


Nuveen Tax-Exempt Unit Trust, Series 724
c/o John Nuveen & Co. Incorporated,
as Depositor of Nuveen Tax-Exempt Unit
Trust, Series 724
333 W. Wacker Drive
Chicago, Illinois  60606

RE:  Nuveen Tax-Exempt Unit Trust, Series 724

Dear Sirs:

    We hereby consent to the reference to our firm under the caption "What is
the Tax Status of Unitholders?" in the Registration Statement and
related Prospectus of Nuveen Tax-Exempt Unit Trust, Series 724 for the
registration of units of fractional undivided interest in the Fund in the 
aggregate principal amount as set forth in the Closing Memorandum dated 
today's date.
 
Very truly yours,


CARTER, LEDYARD & MILBURN
 


<PAGE>

                                   MEMORANDUM

                 Nuveen Tax-Exempt Unit Trust, Series 724
                               File No. 33-52327


    The Prospectus and the Indenture filed with Amendment No. 1 of the
Registration Statement on Form S-6 have been revised to reflect information
regarding the execution of the Indenture and the deposit of bonds on 4/13/94,
and to set forth certain statistical data based thereon.  In addition, there 
are a number of other changes from the Prospectus as originally filed to which
reference is made, including the increase in the size of the Fund, a
corresponding increase in the number of Units and a change in the individual
trusts constituting the Fund.  All references to the Units, prices and related
statistical data will apply to each trust of the Fund and the Units thereof
individually.

    Except for such updating, an effort has been made to set forth below each 
of the changes and also to reflect the same by marking the Prospectus 
transmitted with the Amendment.  Also, differences between the Final 
Prospectus relating to the previous series of the Nuveen Tax-Exempt Unit 
Trust and the subject Prospectus have been indicated.

                                    FORM S-6

    FACING SHEET.  The file number is now shown.

                                 THE PROSPECTUS

     PAGE 3.       The "Estimated Long-Term Return" and "Estimated Current
Return" to Unitholders under each Trust under each of the distribution
plans are stated.

     PAGES 4 - 6.  Essential information for each of the Trusts, including
applicable footnotes, has been completed for this Series.

     PAGES 6 - 7.  The date of the Indenture has been inserted in Section 1
along with the size and number of Units of each of the Trusts.

     PAGE 9 et seq. The following information for each Trust appears on the
pages relating to such trust:

         The estimated daily accrual of interest under the plans of
         distribution for each of the Trusts

         Data regarding the composition of the portfolio of each
         Trust

         Disclosure regarding the states' economic and legislative
         matters relevant to investors of state trusts

         Concentrations of issues by purpose in each Trust

         The approximate percentage of the bonds in the
         portfolio of each Trust acquired in distributions where
         the Sponsor was either the sole underwriter or manager
         or member of the underwriting syndicate

         The percentage of "when issued" bonds in the portfolio
         of each Trust

         The schedule of investments for each Trust, including
         the notes thereto

         Descriptions of the opinions of the special tax
         counsel for state trusts

         The Record Dates and Distribution Dates for
         interest distributions for each Trust

         The distribution table for each Trust

         Taxable Equivalent Estimated Current Return Tables for residents
         of the respective jurisdictions

         The statements of condition for each Trust
         and the accountant's report with regard thereto.

         The Trustee's Fee

                             THE INDENTURE

The Schedules to the Indenture have been completed.


CHAPMAN AND CUTLER


Chicago, Illinois

4/13/94
                                                                      
<PAGE>                                                                        
                                                                              
                                                                              
  STATEMENT OF UNITHOLDER ESTIMATED CASH FLOW                                 
                                                                              
Series:0724   Day of Deposit:April 13, 1994                                   
                                                                              
                                                                              
<TABLE>                                                                       
                                                                              
Virginia Traditional Trust 285                                                
                                                                              
<CAPTION>   MONTHLY   QUARTERLY  SEMI-ANNUALLY                                
          ------------------------------------                                
<S>         <C>         <C>         <C>                                       
IRR:         5.712       5.704       5.677                                    
CUR RET:     5.716       5.748       5.767                                    
L/T RET:     5.763       5.801       5.820                                    
                                                                              
</TABLE>                                                                      
                                                                              
<TABLE>                                                                       
           ESTIMATED PRINCIPAL AND INTEREST                                   
                DISTRIBUTIONS PER UNIT                                        
          ------------------------------------                                
<CAPTION> MON/YR      MONTHLY   QUARTERLY  SEMI-ANNUALLY                      
- ----------------------------------------------                                
          <S>       <C>         <C>         <C>                               
          APR 94    -100.400    -100.400    -100.400                          
                                                                              
          MAY 94       0.2866      0.0955      0.0477                         
          JUN 94       0.4777      0.0000      0.0000                         
          JUL 94       0.4777      0.0000      0.0000                         
          AUG 94       0.4777      1.4412      0.0000                         
          SEP 94       0.4777      0.0000      0.0000                         
          OCT 94       0.4777      0.0000      0.0000                         
          NOV 94       0.4777      1.4412      2.8919                         
          DEC 94       0.4777      0.0000      0.0000                         
          JAN 95       0.4777      0.0000      0.0000                         
          FEB 95       0.4777      1.4412      0.0000                         
          MAR 95       0.4777      0.0000      0.0000                         
                                                                              
          APR 95       0.4777      0.0000      0.0000                         
          MAY 95       0.4777      1.4412      2.8919                         
          JUN 95       0.4777      0.0000      0.0000                         
          JUL 95       0.4777      0.0000      0.0000                         
          AUG 95       0.4777      1.4412      0.0000                         
          SEP 95       0.4777      0.0000      0.0000                         
          OCT 95       0.4777      0.0000      0.0000                         
          NOV 95       0.4777      1.4412      2.8919                         
          DEC 95       0.4777      0.0000      0.0000                         
          JAN 96       0.4777      0.0000      0.0000                         
          FEB 96       0.4777      1.4412      0.0000                         
          MAR 96       0.4777      0.0000      0.0000                         
                                                                              
          APR 96       0.4777      0.0000      0.0000                         
          MAY 96       0.4777      1.4412      2.8919                         
          JUN 96       0.4777      0.0000      0.0000                         
          JUL 96       0.4777      0.0000      0.0000                         
          AUG 96       0.4777      1.4412      0.0000                         
          SEP 96       0.4777      0.0000      0.0000                         
          OCT 96       0.4777      0.0000      0.0000                         
          NOV 96       0.4777      1.4412      2.8919                         
          DEC 96       0.4777      0.0000      0.0000                         
          JAN 97       0.4777      0.0000      0.0000                         
          FEB 97       0.4777      1.4412      0.0000                         
          MAR 97       0.4777      0.0000      0.0000                         
                                                                              
          APR 97       0.4777      0.0000      0.0000                         
          MAY 97       0.4777      1.4412      2.8919                         
          JUN 97       0.4777      0.0000      0.0000                         
          JUL 97       0.4777      0.0000      0.0000                         
          AUG 97       0.4777      1.4412      0.0000                         
          SEP 97       0.4777      0.0000      0.0000                         
          OCT 97       0.4777      0.0000      0.0000                         
          NOV 97       0.4777      1.4412      2.8919                         
          DEC 97       0.4777      0.0000      0.0000                         
          JAN 98       0.4777      0.0000      0.0000                         
          FEB 98       0.4777      1.4412      0.0000                         
          MAR 98       0.4777      0.0000      0.0000                         
                                                                              
          APR 98       0.4777      0.0000      0.0000                         
          MAY 98       0.4777      1.4412      2.8919                         
          JUN 98       0.4777      0.0000      0.0000                         
          JUL 98       0.4777      0.0000      0.0000                         
          AUG 98       0.4777      1.4412      0.0000                         
          SEP 98       0.4777      0.0000      0.0000                         
          OCT 98       0.4777      0.0000      0.0000                         
          NOV 98       0.4777      1.4412      2.8919                         
          DEC 98       0.4777      0.0000      0.0000                         
          JAN 99       0.4777      0.0000      0.0000                         
          FEB 99       0.4777      1.4412      0.0000                         
          MAR 99       0.4777      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 99       0.4777      0.0000      0.0000                         
          MAY 99       0.4777      1.4412      2.8919                         
          JUN 99       0.4777      0.0000      0.0000                         
          JUL 99       0.4777      0.0000      0.0000                         
          AUG 99       0.4777      1.4412      0.0000                         
          SEP 99       0.4777      0.0000      0.0000                         
          OCT 99       0.4777      0.0000      0.0000                         
          NOV 99       0.4777      1.4412      2.8919                         
          DEC 99       0.4777      0.0000      0.0000                         
          JAN 00       0.4777      0.0000      0.0000                         
          FEB 00       0.4777      1.4412      0.0000                         
          MAR 00       0.4777      0.0000      0.0000                         
                                                                              
          APR 00       0.4777      0.0000      0.0000                         
          MAY 00       0.4777      1.4412      2.8919                         
          JUN 00       0.4777      0.0000      0.0000                         
          JUL 00       0.4777      0.0000      0.0000                         
          AUG 00       0.4777      1.4412      0.0000                         
          SEP 00       0.4777      0.0000      0.0000                         
          OCT 00       0.4777      0.0000      0.0000                         
          NOV 00       0.4777      1.4412      2.8919                         
          DEC 00       0.4777      0.0000      0.0000                         
          JAN 01       0.4777      0.0000      0.0000                         
          FEB 01       0.4777      1.4412      0.0000                         
          MAR 01       0.4777      0.0000      0.0000                         
                                                                              
          APR 01       0.4777      0.0000      0.0000                         
          MAY 01       0.4777      1.4412      2.8919                         
          JUN 01       0.4777      0.0000      0.0000                         
          JUL 01       0.4777      0.0000      0.0000                         
          AUG 01       0.4777      1.4412      0.0000                         
          SEP 01       0.4777      0.0000      0.0000                         
          OCT 01       0.4777      0.0000      0.0000                         
          NOV 01       0.4777      1.4412      2.8919                         
          DEC 01       0.4777      0.0000      0.0000                         
          JAN 02       0.4777      0.0000      0.0000                         
          FEB 02       0.4777      1.4412      0.0000                         
          MAR 02       0.4777      0.0000      0.0000                         
                                                                              
          APR 02       0.4777      0.0000      0.0000                         
          MAY 02       0.4777      1.4412      2.8919                         
          JUN 02       0.4777      0.0000      0.0000                         
          JUL 02       0.4777      0.0000      0.0000                         
          AUG 02       0.4777      1.4412      0.0000                         
          SEP 02       0.4777      0.0000      0.0000                         
          OCT 02       0.4777      0.0000      0.0000                         
          NOV 02       0.4777      1.4412      2.8919                         
          DEC 02       0.4777      0.0000      0.0000                         
          JAN 03       0.4777      0.0000      0.0000                         
          FEB 03       0.4777      1.4412      0.0000                         
          MAR 03       0.4777      0.0000      0.0000                         
                                                                              
          APR 03       0.4777      0.0000      0.0000                         
          MAY 03       0.4777      1.4412      2.8919                         
          JUN 03       0.4777      0.0000      0.0000                         
          JUL 03       0.4777      0.0000      0.0000                         
          AUG 03       0.4777      1.4412      0.0000                         
          SEP 03       0.4777      0.0000      0.0000                         
          OCT 03       0.4777      0.0000      0.0000                         
          NOV 03       0.4777      1.4412      2.8919                         
          DEC 03       0.4777      0.0000      0.0000                         
          JAN 04       0.4777      0.0000      0.0000                         
          FEB 04       0.4777      1.4412      0.0000                         
          MAR 04       0.4777      0.0000      0.0000                         
                                                                              
          APR 04      14.7634     14.2857     14.2857                         
          MAY 04       0.3984      1.3615      2.8120                         
          JUN 04       0.3984      0.0000      0.0000                         
          JUL 04      14.6841     14.2857     14.2857                         
          AUG 04       0.3266      1.1300      0.0000                         
          SEP 04       0.3266      0.0000      0.0000                         
          OCT 04       0.3266      0.0000      0.0000                         
          NOV 04       0.3266      0.9856      2.1229                         
          DEC 04       0.3266      0.0000      0.0000                         
          JAN 05       0.3266      0.0000      0.0000                         
          FEB 05       0.3266      0.9856      0.0000                         
          MAR 05       0.3266      0.0000      0.0000                         
                                                                              
          APR 05       0.3266      0.0000      0.0000                         
          MAY 05       0.3266      0.9856      1.9781                         
          JUN 05       0.3266      0.0000      0.0000                         
          JUL 05       0.3266      0.0000      0.0000                         
          AUG 05       0.3266      0.9856      0.0000                         
          SEP 05       0.3266      0.0000      0.0000                         
          OCT 05       0.3266      0.0000      0.0000                         
          NOV 05       0.3266      0.9856      1.9781                         
          DEC 05       0.3266      0.0000      0.0000                         
          JAN 06       0.3266      0.0000      0.0000                         
          FEB 06       0.3266      0.9856      0.0000                         
          MAR 06       0.3266      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 06       0.3266      0.0000      0.0000                         
          MAY 06       0.3266      0.9856      1.9781                         
          JUN 06       0.3266      0.0000      0.0000                         
          JUL 06       0.3266      0.0000      0.0000                         
          AUG 06      14.6123     15.2713     14.2857                         
          SEP 06       0.2554      0.0000      0.0000                         
          OCT 06       0.2554      0.0000      0.0000                         
          NOV 06       0.2554      0.7708      1.7626                         
          DEC 06       0.2554      0.0000      0.0000                         
          JAN 07       0.2554      0.0000      0.0000                         
          FEB 07       0.2554      0.7708      0.0000                         
          MAR 07       0.2554      0.0000      0.0000                         
                                                                              
          APR 07       0.2554      0.0000      0.0000                         
          MAY 07       0.2554      0.7708      1.5471                         
          JUN 07       0.2554      0.0000      0.0000                         
          JUL 07       0.2554      0.0000      0.0000                         
          AUG 07       0.2554      0.7708      0.0000                         
          SEP 07       0.2554      0.0000      0.0000                         
          OCT 07       0.2554      0.0000      0.0000                         
          NOV 07       0.2554      0.7708      1.5471                         
          DEC 07       0.2554      0.0000      0.0000                         
          JAN 08       0.2554      0.0000      0.0000                         
          FEB 08       0.2554      0.7708      0.0000                         
          MAR 08       0.2554      0.0000      0.0000                         
                                                                              
          APR 08       0.2554      0.0000      0.0000                         
          MAY 08       0.2554      0.7708      1.5471                         
          JUN 08       0.2554      0.0000      0.0000                         
          JUL 08       0.2554      0.0000      0.0000                         
          AUG 08       0.2554      0.7708      0.0000                         
          SEP 08       0.2554      0.0000      0.0000                         
          OCT 08       0.2554      0.0000      0.0000                         
          NOV 08       0.2554      0.7708      1.5471                         
          DEC 08       0.2554      0.0000      0.0000                         
          JAN 09       0.2554      0.0000      0.0000                         
          FEB 09       0.2554      0.7708      0.0000                         
          MAR 09       0.2554      0.0000      0.0000                         
                                                                              
          APR 09       0.2554      0.0000      0.0000                         
          MAY 09       0.2554      0.7708      1.5471                         
          JUN 09       0.2554      0.0000      0.0000                         
          JUL 09       0.2554      0.0000      0.0000                         
          AUG 09       0.2554      0.7708      0.0000                         
          SEP 09       0.2554      0.0000      0.0000                         
          OCT 09       0.2554      0.0000      0.0000                         
          NOV 09       0.2554      0.7708      1.5471                         
          DEC 09       0.2554      0.0000      0.0000                         
          JAN 10       0.2554      0.0000      0.0000                         
          FEB 10       0.2554      0.7708      0.0000                         
          MAR 10       0.2554      0.0000      0.0000                         
                                                                              
          APR 10       0.2554      0.0000      0.0000                         
          MAY 10       0.2554      0.7708      1.5471                         
          JUN 10       0.2554      0.0000      0.0000                         
          JUL 10       0.2554      0.0000      0.0000                         
          AUG 10       0.2554      0.7708      0.0000                         
          SEP 10       0.2554      0.0000      0.0000                         
          OCT 10       0.2554      0.0000      0.0000                         
          NOV 10       0.2554      0.7708      1.5471                         
          DEC 10       0.2554      0.0000      0.0000                         
          JAN 11       0.2554      0.0000      0.0000                         
          FEB 11       0.2554      0.7708      0.0000                         
          MAR 11       0.2554      0.0000      0.0000                         
                                                                              
          APR 11       0.2554      0.0000      0.0000                         
          MAY 11       0.2554      0.7708      1.5471                         
          JUN 11       0.2554      0.0000      0.0000                         
          JUL 11       0.2554      0.0000      0.0000                         
          AUG 11       0.2554      0.7708      0.0000                         
          SEP 11       0.2554      0.0000      0.0000                         
          OCT 11       0.2554      0.0000      0.0000                         
          NOV 11       0.2554      0.7708      1.5471                         
          DEC 11       0.2554      0.0000      0.0000                         
          JAN 12       0.2554      0.0000      0.0000                         
          FEB 12       0.2554      0.7708      0.0000                         
          MAR 12       0.2554      0.0000      0.0000                         
                                                                              
          APR 12       5.9697      5.7142      5.7142                         
          MAY 12       0.2296      0.7449      1.5211                         
          JUN 12       0.2296      0.0000      0.0000                         
          JUL 12       0.2296      0.0000      0.0000                         
          AUG 12       0.2296      0.6931      0.0000                         
          SEP 12       0.2296      0.0000      0.0000                         
          OCT 12       0.2296      0.0000      0.0000                         
          NOV 12       0.2296      0.6931      1.3911                         
          DEC 12       0.2296      0.0000      0.0000                         
          JAN 13       0.2296      0.0000      0.0000                         
          FEB 13       0.2296      0.6931      0.0000                         
          MAR 13       0.2296      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 13       0.2296      0.0000      0.0000                         
          MAY 13       0.2296      0.6931      1.3911                         
          JUN 13       0.2296      0.0000      0.0000                         
          JUL 13       0.2296      0.0000      0.0000                         
          AUG 13       0.2296      0.6931      0.0000                         
          SEP 13       0.2296      0.0000      0.0000                         
          OCT 13       0.2296      0.0000      0.0000                         
          NOV 13       0.2296      0.6931      1.3911                         
          DEC 13       8.8011      8.5714      8.5714                         
          JAN 14       0.1901      0.0000      0.0000                         
          FEB 14       0.1901      0.6136      0.0000                         
          MAR 14       0.1901      0.0000      0.0000                         
                                                                              
          APR 14       0.1901      0.0000      0.0000                         
          MAY 14       0.1901      0.5739      1.1917                         
          JUN 14       0.1901      0.0000      0.0000                         
          JUL 14       0.1901      0.0000      0.0000                         
          AUG 14       0.1901      0.5739      0.0000                         
          SEP 14       0.1901      0.0000      0.0000                         
          OCT 14       0.1901      0.0000      0.0000                         
          NOV 14       0.1901      0.5739      1.1518                         
          DEC 14       0.1901      0.0000      0.0000                         
          JAN 15       0.1901      0.0000      0.0000                         
          FEB 15       0.1901      0.5739      0.0000                         
          MAR 15       0.1901      0.0000      0.0000                         
                                                                              
          APR 15       0.1901      0.0000      0.0000                         
          MAY 15       0.1901      0.5739      1.1518                         
          JUN 15       0.1901      0.0000      0.0000                         
          JUL 15       0.1901      0.0000      0.0000                         
          AUG 15       0.1901      0.5739      0.0000                         
          SEP 15       0.1901      0.0000      0.0000                         
          OCT 15       0.1901      0.0000      0.0000                         
          NOV 15       0.1901      0.5739      1.1518                         
          DEC 15       0.1901      0.0000      0.0000                         
          JAN 16       0.1901      0.0000      0.0000                         
          FEB 16       0.1901      0.5739      0.0000                         
          MAR 16       0.1901      0.0000      0.0000                         
                                                                              
          APR 16       0.1901      0.0000      0.0000                         
          MAY 16       0.1901      0.5739      1.1518                         
          JUN 16       0.1901      0.0000      0.0000                         
          JUL 16       0.1901      0.0000      0.0000                         
          AUG 16       0.1901      0.5739      0.0000                         
          SEP 16       0.1901      0.0000      0.0000                         
          OCT 16       0.1901      0.0000      0.0000                         
          NOV 16       0.1901      0.5739      1.1518                         
          DEC 16       0.1901      0.0000      0.0000                         
          JAN 17       0.1901      0.0000      0.0000                         
          FEB 17       0.1901      0.5739      0.0000                         
          MAR 17       0.1901      0.0000      0.0000                         
                                                                              
          APR 17       0.1901      0.0000      0.0000                         
          MAY 17       0.1901      0.5739      1.1518                         
          JUN 17       0.1901      0.0000      0.0000                         
          JUL 17       0.1901      0.0000      0.0000                         
          AUG 17       0.1901      0.5739      0.0000                         
          SEP 17       0.1901      0.0000      0.0000                         
          OCT 17       0.1901      0.0000      0.0000                         
          NOV 17       0.1901      0.5739      1.1518                         
          DEC 17       0.1901      0.0000      0.0000                         
          JAN 18       0.1901      0.0000      0.0000                         
          FEB 18       0.1901      0.5739      0.0000                         
          MAR 18       0.1901      0.0000      0.0000                         
                                                                              
          APR 18       0.1901      0.0000      0.0000                         
          MAY 18      14.4758     14.8596     15.4376                         
          JUN 18       0.1272      0.0000      0.0000                         
          JUL 18       0.1272      0.0000      0.0000                         
          AUG 18       0.1272      0.3840      0.0000                         
          SEP 18       0.1272      0.0000      0.0000                         
          OCT 18       0.1272      0.0000      0.0000                         
          NOV 18       0.1272      0.3840      0.7709                         
          DEC 18       0.1272      0.0000      0.0000                         
          JAN 19       0.1272      0.0000      0.0000                         
          FEB 19       0.1272      0.3840      0.0000                         
          MAR 19       0.1272      0.0000      0.0000                         
                                                                              
          APR 19       0.1272      0.0000      0.0000                         
          MAY 19       0.1272      0.3840      0.7709                         
          JUN 19       0.1272      0.0000      0.0000                         
          JUL 19       0.1272      0.0000      0.0000                         
          AUG 19       0.1272      0.3840      0.0000                         
          SEP 19       0.1272      0.0000      0.0000                         
          OCT 19       0.1272      0.0000      0.0000                         
          NOV 19       0.1272      0.3840      0.7709                         
          DEC 19       0.1272      0.0000      0.0000                         
          JAN 20       0.1272      0.0000      0.0000                         
          FEB 20       0.1272      0.3840      0.0000                         
          MAR 20       0.1272      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 20       0.1272      0.0000      0.0000                         
          MAY 20       0.1272      0.3840      0.7709                         
          JUN 20       0.1272      0.0000      0.0000                         
          JUL 20       0.1272      0.0000      0.0000                         
          AUG 20       0.1272      0.3840      0.0000                         
          SEP 20       0.1272      0.0000      0.0000                         
          OCT 20       0.1272      0.0000      0.0000                         
          NOV 20       0.1272      0.3840      0.7709                         
          DEC 20       0.1272      0.0000      0.0000                         
          JAN 21       0.1272      0.0000      0.0000                         
          FEB 21       0.1272      0.3840      0.0000                         
          MAR 21       0.1272      0.0000      0.0000                         
                                                                              
          APR 21       0.1272      0.0000      0.0000                         
          MAY 21       0.1272      0.3840      0.7709                         
          JUN 21       0.1272      0.0000      0.0000                         
          JUL 21       0.1272      0.0000      0.0000                         
          AUG 21       0.1272      0.3840      0.0000                         
          SEP 21       0.1272      0.0000      0.0000                         
          OCT 21       0.1272      0.0000      0.0000                         
          NOV 21       0.1272      0.3840      0.7709                         
          DEC 21       0.1272      0.0000      0.0000                         
          JAN 22       0.1272      0.0000      0.0000                         
          FEB 22       0.1272      0.3840      0.0000                         
          MAR 22       0.1272      0.0000      0.0000                         
                                                                              
          APR 22       0.1272      0.0000      0.0000                         
          MAY 22       0.1272      0.3840      0.7709                         
          JUN 22       0.1272      0.0000      0.0000                         
          JUL 22       0.1272      0.0000      0.0000                         
          AUG 22       0.1272      0.3840      0.0000                         
          SEP 22       0.1272      0.0000      0.0000                         
          OCT 22       0.1272      0.0000      0.0000                         
          NOV 22       0.1272      0.3840      0.7709                         
          DEC 22       0.1272      0.0000      0.0000                         
          JAN 23       0.1272      0.0000      0.0000                         
          FEB 23       0.1272      0.3840      0.0000                         
          MAR 23       0.1272      0.0000      0.0000                         
                                                                              
          APR 23       0.1272      0.0000      0.0000                         
          MAY 23       0.1272      0.3840      0.7709                         
          JUN 23       0.1272      0.0000      0.0000                         
          JUL 23       0.1272      0.0000      0.0000                         
          AUG 23       0.1272      0.3840      0.0000                         
          SEP 23       0.1272      0.0000      0.0000                         
          OCT 23       0.1272      0.0000      0.0000                         
          NOV 23       0.1272      0.3840      0.7709                         
          DEC 23       0.1272      0.0000      0.0000                         
          JAN 24       0.1272      0.0000      0.0000                         
          FEB 24      14.4129     14.6698     14.2857                         
          MAR 24       0.0658      0.0000      0.0000                         
                                                                              
          APR 24       0.0658      0.0000      0.0000                         
          MAY 24       0.0658      0.1987      0.5848                         
          JUN 24       0.0658      0.0000      0.0000                         
          JUL 24       0.0658      0.0000      0.0000                         
          AUG 24       0.0658      0.1987      0.0000                         
          SEP 24       0.0658      0.0000      0.0000                         
          OCT 24       0.0658      0.0000      0.0000                         
          NOV 24       0.0658      0.1987      0.3988                         
          DEC 24       0.0658      0.0000      0.0000                         
          JAN 25       0.0658      0.0000      0.0000                         
          FEB 25       0.0658      0.1987      0.0000                         
          MAR 25       0.0658      0.0000      0.0000                         
                                                                              
          APR 25       0.0658      0.0000      0.0000                         
          MAY 25       0.0658      0.1987      0.3988                         
          JUN 25       0.0658      0.0000      0.0000                         
          JUL 25       0.0658      0.0000      0.0000                         
          AUG 25       0.0658      0.1987      0.0000                         
          SEP 25       0.0658      0.0000      0.0000                         
          OCT 25       0.0658      0.0000      0.0000                         
          NOV 25       0.0658      0.1987      0.3988                         
          DEC 25       0.0658      0.0000      0.0000                         
          JAN 26       0.0658      0.0000      0.0000                         
          FEB 26       0.0658      0.1987      0.0000                         
          MAR 26       0.0658      0.0000      0.0000                         
                                                                              
          APR 26       0.0658      0.0000      0.0000                         
          MAY 26       0.0658      0.1987      0.3988                         
          JUN 26       0.0658      0.0000      0.0000                         
          JUL 26       0.0658      0.0000      0.0000                         
          AUG 26       0.0658      0.1987      0.0000                         
          SEP 26       0.0658      0.0000      0.0000                         
          OCT 26       0.0658      0.0000      0.0000                         
          NOV 26       0.0658      0.1987      0.3988                         
          DEC 26       0.0658      0.0000      0.0000                         
          JAN 27       0.0658      0.0000      0.0000                         
          FEB 27       0.0658      0.1987      0.0000                         
          MAR 27       0.0658      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 27       0.0658      0.0000      0.0000                         
          MAY 27       0.0658      0.1987      0.3988                         
          JUN 27       0.0658      0.0000      0.0000                         
          JUL 27       0.0658      0.0000      0.0000                         
          AUG 27       0.0658      0.1987      0.0000                         
          SEP 27       0.0658      0.0000      0.0000                         
          OCT 27       0.0658      0.0000      0.0000                         
          NOV 27       0.0658      0.1987      0.3988                         
          DEC 27       0.0658      0.0000      0.0000                         
          JAN 28       0.0658      0.0000      0.0000                         
          FEB 28       0.0658      0.1987      0.0000                         
          MAR 28       0.0658      0.0000      0.0000                         
                                                                              
          APR 28       0.0658      0.0000      0.0000                         
          MAY 28       0.0658      0.1987      0.3988                         
          JUN 28       0.0658      0.0000      0.0000                         
          JUL 28       0.0658      0.0000      0.0000                         
          AUG 28       0.0658      0.1987      0.0000                         
          SEP 28       0.0658      0.0000      0.0000                         
          OCT 28       0.0658      0.0000      0.0000                         
          NOV 28       0.0658      0.1987      0.3988                         
          DEC 28       0.0658      0.0000      0.0000                         
          JAN 29       0.0658      0.0000      0.0000                         
          FEB 29       0.0658      0.1987      0.0000                         
          MAR 29       0.0658      0.0000      0.0000                         
                                                                              
          APR 29      14.3515     14.4182     14.6180                         
                                                                              
</TABLE>                                                                      
                                                                              
                                                                              
                                                                              
<PAGE>                                                                        
                                                                              
                                                                              
<TABLE>                                                                       
                                                                              
California Insured Trust 223                                                  
                                                                              
<CAPTION>   MONTHLY   QUARTERLY  SEMI-ANNUALLY                                
          ------------------------------------                                
<S>         <C>         <C>         <C>                                       
IRR:         5.754       5.747       5.723                                    
CUR RET:     5.551       5.585       5.605                                    
L/T RET:     5.706       5.735       5.754                                    
                                                                              
</TABLE>                                                                      
                                                                              
<TABLE>                                                                       
           ESTIMATED PRINCIPAL AND INTEREST                                   
                DISTRIBUTIONS PER UNIT                                        
          ------------------------------------                                
<CAPTION> MON/YR      MONTHLY   QUARTERLY  SEMI-ANNUALLY                      
- ----------------------------------------------                                
          <S>       <C>         <C>         <C>                               
          APR 94     -95.890     -95.890     -95.890                          
                                                                              
          MAY 94       0.2658      0.0886      0.0443                         
          JUN 94       0.4431      0.0000      0.0000                         
          JUL 94       0.4431      0.0000      0.0000                         
          AUG 94       0.4431      1.3373      0.0000                         
          SEP 94       0.4431      0.0000      0.0000                         
          OCT 94       0.4431      0.0000      0.0000                         
          NOV 94       0.4431      1.3373      2.6842                         
          DEC 94       0.4431      0.0000      0.0000                         
          JAN 95       0.4431      0.0000      0.0000                         
          FEB 95       0.4431      1.3373      0.0000                         
          MAR 95       0.4431      0.0000      0.0000                         
                                                                              
          APR 95       0.4431      0.0000      0.0000                         
          MAY 95       0.4431      1.3373      2.6842                         
          JUN 95       0.4431      0.0000      0.0000                         
          JUL 95       0.4431      0.0000      0.0000                         
          AUG 95       0.4431      1.3373      0.0000                         
          SEP 95       0.4431      0.0000      0.0000                         
          OCT 95       0.4431      0.0000      0.0000                         
          NOV 95       0.4431      1.3373      2.6842                         
          DEC 95       0.4431      0.0000      0.0000                         
          JAN 96       0.4431      0.0000      0.0000                         
          FEB 96       0.4431      1.3373      0.0000                         
          MAR 96       0.4431      0.0000      0.0000                         
                                                                              
          APR 96       0.4431      0.0000      0.0000                         
          MAY 96       0.4431      1.3373      2.6842                         
          JUN 96       0.4431      0.0000      0.0000                         
          JUL 96       0.4431      0.0000      0.0000                         
          AUG 96       0.4431      1.3373      0.0000                         
          SEP 96       0.4431      0.0000      0.0000                         
          OCT 96       0.4431      0.0000      0.0000                         
          NOV 96       0.4431      1.3373      2.6842                         
          DEC 96       0.4431      0.0000      0.0000                         
          JAN 97       0.4431      0.0000      0.0000                         
          FEB 97       0.4431      1.3373      0.0000                         
          MAR 97       0.4431      0.0000      0.0000                         
                                                                              
          APR 97       0.4431      0.0000      0.0000                         
          MAY 97       0.4431      1.3373      2.6842                         
          JUN 97       0.4431      0.0000      0.0000                         
          JUL 97       0.4431      0.0000      0.0000                         
          AUG 97       0.4431      1.3373      0.0000                         
          SEP 97       0.4431      0.0000      0.0000                         
          OCT 97       0.4431      0.0000      0.0000                         
          NOV 97       0.4431      1.3373      2.6842                         
          DEC 97       0.4431      0.0000      0.0000                         
          JAN 98       0.4431      0.0000      0.0000                         
          FEB 98       0.4431      1.3373      0.0000                         
          MAR 98       0.4431      0.0000      0.0000                         
                                                                              
          APR 98       0.4431      0.0000      0.0000                         
          MAY 98       0.4431      1.3373      2.6842                         
          JUN 98       0.4431      0.0000      0.0000                         
          JUL 98       0.4431      0.0000      0.0000                         
          AUG 98       0.4431      1.3373      0.0000                         
          SEP 98       0.4431      0.0000      0.0000                         
          OCT 98       0.4431      0.0000      0.0000                         
          NOV 98       0.4431      1.3373      2.6842                         
          DEC 98       0.4431      0.0000      0.0000                         
          JAN 99       0.4431      0.0000      0.0000                         
          FEB 99       0.4431      1.3373      0.0000                         
          MAR 99       0.4431      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 99       0.4431      0.0000      0.0000                         
          MAY 99       0.4431      1.3373      2.6842                         
          JUN 99       0.4431      0.0000      0.0000                         
          JUL 99       0.4431      0.0000      0.0000                         
          AUG 99       0.4431      1.3373      0.0000                         
          SEP 99       0.4431      0.0000      0.0000                         
          OCT 99       0.4431      0.0000      0.0000                         
          NOV 99       0.4431      1.3373      2.6842                         
          DEC 99       0.4431      0.0000      0.0000                         
          JAN 00       0.4431      0.0000      0.0000                         
          FEB 00       0.4431      1.3373      0.0000                         
          MAR 00       0.4431      0.0000      0.0000                         
                                                                              
          APR 00       0.4431      0.0000      0.0000                         
          MAY 00       0.4431      1.3373      2.6842                         
          JUN 00       0.4431      0.0000      0.0000                         
          JUL 00       0.4431      0.0000      0.0000                         
          AUG 00       0.4431      1.3373      0.0000                         
          SEP 00       0.4431      0.0000      0.0000                         
          OCT 00       0.4431      0.0000      0.0000                         
          NOV 00       0.4431      1.3373      2.6842                         
          DEC 00       0.4431      0.0000      0.0000                         
          JAN 01       0.4431      0.0000      0.0000                         
          FEB 01       0.4431      1.3373      0.0000                         
          MAR 01       0.4431      0.0000      0.0000                         
                                                                              
          APR 01       0.4431      0.0000      0.0000                         
          MAY 01       0.4431      1.3373      2.6842                         
          JUN 01       0.4431      0.0000      0.0000                         
          JUL 01       0.4431      0.0000      0.0000                         
          AUG 01       0.4431      1.3373      0.0000                         
          SEP 01       0.4431      0.0000      0.0000                         
          OCT 01       0.4431      0.0000      0.0000                         
          NOV 01       0.4431      1.3373      2.6842                         
          DEC 01       0.4431      0.0000      0.0000                         
          JAN 02       0.4431      0.0000      0.0000                         
          FEB 02       0.4431      1.3373      0.0000                         
          MAR 02       0.4431      0.0000      0.0000                         
                                                                              
          APR 02       0.4431      0.0000      0.0000                         
          MAY 02       0.4431      1.3373      2.6842                         
          JUN 02       0.4431      0.0000      0.0000                         
          JUL 02       0.4431      0.0000      0.0000                         
          AUG 02       0.4431      1.3373      0.0000                         
          SEP 02       0.4431      0.0000      0.0000                         
          OCT 02       0.4431      0.0000      0.0000                         
          NOV 02       0.4431      1.3373      2.6842                         
          DEC 02       0.4431      0.0000      0.0000                         
          JAN 03       0.4431      0.0000      0.0000                         
          FEB 03       0.4431      1.3373      0.0000                         
          MAR 03       0.4431      0.0000      0.0000                         
                                                                              
          APR 03       0.4431      0.0000      0.0000                         
          MAY 03       0.4431      1.3373      2.6842                         
          JUN 03       0.4431      0.0000      0.0000                         
          JUL 03       0.4431      0.0000      0.0000                         
          AUG 03       0.4431      1.3373      0.0000                         
          SEP 03       0.4431      0.0000      0.0000                         
          OCT 03       0.4431      0.0000      0.0000                         
          NOV 03       0.4431      1.3373      2.6842                         
          DEC 03       0.4431      0.0000      0.0000                         
          JAN 04       0.4431      0.0000      0.0000                         
          FEB 04       0.4431      1.3373      0.0000                         
          MAR 04       0.4431      0.0000      0.0000                         
                                                                              
          APR 04       0.4431      0.0000      0.0000                         
          MAY 04       0.4431      1.3373      2.6842                         
          JUN 04       0.4431      0.0000      0.0000                         
          JUL 04       0.4431      0.0000      0.0000                         
          AUG 04       0.4431      1.3373      0.0000                         
          SEP 04       0.4431      0.0000      0.0000                         
          OCT 04       0.4431      0.0000      0.0000                         
          NOV 04       0.4431      1.3373      2.6842                         
          DEC 04       0.4431      0.0000      0.0000                         
          JAN 05       0.4431      0.0000      0.0000                         
          FEB 05       0.4431      1.3373      0.0000                         
          MAR 05       0.4431      0.0000      0.0000                         
                                                                              
          APR 05       0.4431      0.0000      0.0000                         
          MAY 05       0.4431      1.3373      2.6842                         
          JUN 05       0.4431      0.0000      0.0000                         
          JUL 05       0.4431      0.0000      0.0000                         
          AUG 05       0.4431      1.3373      0.0000                         
          SEP 05       0.4431      0.0000      0.0000                         
          OCT 05       0.4431      0.0000      0.0000                         
          NOV 05       0.4431      1.3373      2.6842                         
          DEC 05       0.4431      0.0000      0.0000                         
          JAN 06       0.4431      0.0000      0.0000                         
          FEB 06       0.4431      1.3373      0.0000                         
          MAR 06       0.4431      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 06       0.4431      0.0000      0.0000                         
          MAY 06       0.4431      1.3373      2.6842                         
          JUN 06       0.4431      0.0000      0.0000                         
          JUL 06       0.4431      0.0000      0.0000                         
          AUG 06       0.4431      1.3373      0.0000                         
          SEP 06       0.4431      0.0000      0.0000                         
          OCT 06       0.4431      0.0000      0.0000                         
          NOV 06       0.4431      1.3373      2.6842                         
          DEC 06       0.4431      0.0000      0.0000                         
          JAN 07       0.4431      0.0000      0.0000                         
          FEB 07       0.4431      1.3373      0.0000                         
          MAR 07       0.4431      0.0000      0.0000                         
                                                                              
          APR 07       0.4431      0.0000      0.0000                         
          MAY 07       0.4431      1.3373      2.6842                         
          JUN 07       0.4431      0.0000      0.0000                         
          JUL 07       0.4431      0.0000      0.0000                         
          AUG 07       0.4431      1.3373      0.0000                         
          SEP 07       0.4431      0.0000      0.0000                         
          OCT 07       0.4431      0.0000      0.0000                         
          NOV 07       0.4431      1.3373      2.6842                         
          DEC 07       0.4431      0.0000      0.0000                         
          JAN 08       0.4431      0.0000      0.0000                         
          FEB 08       0.4431      1.3373      0.0000                         
          MAR 08       0.4431      0.0000      0.0000                         
                                                                              
          APR 08       0.4431      0.0000      0.0000                         
          MAY 08       0.4431      1.3373      2.6842                         
          JUN 08       0.4431      0.0000      0.0000                         
          JUL 08       0.4431      0.0000      0.0000                         
          AUG 08       0.4431      1.3373      0.0000                         
          SEP 08       0.4431      0.0000      0.0000                         
          OCT 08       0.4431      0.0000      0.0000                         
          NOV 08       0.4431      1.3373      2.6842                         
          DEC 08       0.4431      0.0000      0.0000                         
          JAN 09       0.4431      0.0000      0.0000                         
          FEB 09       0.4431      1.3373      0.0000                         
          MAR 09       0.4431      0.0000      0.0000                         
                                                                              
          APR 09       0.4431      0.0000      0.0000                         
          MAY 09       0.4431      1.3373      2.6842                         
          JUN 09       0.4431      0.0000      0.0000                         
          JUL 09       0.4431      0.0000      0.0000                         
          AUG 09       0.4431      1.3373      0.0000                         
          SEP 09       0.4431      0.0000      0.0000                         
          OCT 09       0.4431      0.0000      0.0000                         
          NOV 09       0.4431      1.3373      2.6842                         
          DEC 09       0.4431      0.0000      0.0000                         
          JAN 10       0.4431      0.0000      0.0000                         
          FEB 10       0.4431      1.3373      0.0000                         
          MAR 10       0.4431      0.0000      0.0000                         
                                                                              
          APR 10       0.4431      0.0000      0.0000                         
          MAY 10       0.4431      1.3373      2.6842                         
          JUN 10       0.4431      0.0000      0.0000                         
          JUL 10       0.4431      0.0000      0.0000                         
          AUG 10       0.4431      1.3373      0.0000                         
          SEP 10       0.4431      0.0000      0.0000                         
          OCT 10       0.4431      0.0000      0.0000                         
          NOV 10       0.4431      1.3373      2.6842                         
          DEC 10       0.4431      0.0000      0.0000                         
          JAN 11       0.4431      0.0000      0.0000                         
          FEB 11       0.4431      1.3373      0.0000                         
          MAR 11       0.4431      0.0000      0.0000                         
                                                                              
          APR 11       0.4431      0.0000      0.0000                         
          MAY 11       0.4431      1.3373      2.6842                         
          JUN 11       0.4431      0.0000      0.0000                         
          JUL 11       0.4431      0.0000      0.0000                         
          AUG 11       0.4431      1.3373      0.0000                         
          SEP 11       0.4431      0.0000      0.0000                         
          OCT 11       0.4431      0.0000      0.0000                         
          NOV 11       0.4431      1.3373      2.6842                         
          DEC 11       0.4431      0.0000      0.0000                         
          JAN 12       0.4431      0.0000      0.0000                         
          FEB 12       0.4431      1.3373      0.0000                         
          MAR 12       0.4431      0.0000      0.0000                         
                                                                              
          APR 12       0.4431      0.0000      0.0000                         
          MAY 12       0.4431      1.3373      2.6842                         
          JUN 12       0.4431      0.0000      0.0000                         
          JUL 12       0.4431      0.0000      0.0000                         
          AUG 12       0.4431      1.3373      0.0000                         
          SEP 12       0.4431      0.0000      0.0000                         
          OCT 12       0.4431      0.0000      0.0000                         
          NOV 12       0.4431      1.3373      2.6842                         
          DEC 12       0.4431      0.0000      0.0000                         
          JAN 13       0.4431      0.0000      0.0000                         
          FEB 13       0.4431      1.3373      0.0000                         
          MAR 13       0.4431      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 13       0.4431      0.0000      0.0000                         
          MAY 13       0.4431      1.3373      2.6842                         
          JUN 13       0.4431      0.0000      0.0000                         
          JUL 13       0.4431      0.0000      0.0000                         
          AUG 13       0.4431      1.3373      0.0000                         
          SEP 13       0.4431      0.0000      0.0000                         
          OCT 13       0.4431      0.0000      0.0000                         
          NOV 13       0.4431      1.3373      2.6842                         
          DEC 13       0.4431      0.0000      0.0000                         
          JAN 14       0.4431      0.0000      0.0000                         
          FEB 14       0.4431      1.3373      0.0000                         
          MAR 14       0.4431      0.0000      0.0000                         
                                                                              
          APR 14       0.4431      0.0000      0.0000                         
          MAY 14       0.4431      1.3373      2.6842                         
          JUN 14       0.4431      0.0000      0.0000                         
          JUL 14       0.4431      0.0000      0.0000                         
          AUG 14       0.4431      1.3373      0.0000                         
          SEP 14       0.4431      0.0000      0.0000                         
          OCT 14      14.7288     14.2857     14.2857                         
          NOV 14       0.3803      1.2742      2.6208                         
          DEC 14       0.3803      0.0000      0.0000                         
          JAN 15       0.3803      0.0000      0.0000                         
          FEB 15       0.3803      1.1478      0.0000                         
          MAR 15       0.3803      0.0000      0.0000                         
                                                                              
          APR 15       0.3803      0.0000      0.0000                         
          MAY 15       0.3803      1.1478      2.3038                         
          JUN 15      14.6660     14.2857     14.2857                         
          JUL 15       0.3145      0.0000      0.0000                         
          AUG 15       0.3145      1.0155      0.0000                         
          SEP 15       0.3145      0.0000      0.0000                         
          OCT 15       0.3145      0.0000      0.0000                         
          NOV 15       0.3145      0.9494      1.9719                         
          DEC 15       0.3145      0.0000      0.0000                         
          JAN 16       0.3145      0.0000      0.0000                         
          FEB 16       0.3145      0.9494      0.0000                         
          MAR 16       0.3145      0.0000      0.0000                         
                                                                              
          APR 16       0.3145      0.0000      0.0000                         
          MAY 16       0.3145      0.9494      1.9056                         
          JUN 16       0.3145      0.0000      0.0000                         
          JUL 16       0.3145      0.0000      0.0000                         
          AUG 16       0.3145      0.9494      0.0000                         
          SEP 16       0.3145      0.0000      0.0000                         
          OCT 16       0.3145      0.0000      0.0000                         
          NOV 16       0.3145      0.9494      1.9056                         
          DEC 16       0.3145      0.0000      0.0000                         
          JAN 17       0.3145      0.0000      0.0000                         
          FEB 17       0.3145      0.9494      0.0000                         
          MAR 17       0.3145      0.0000      0.0000                         
                                                                              
          APR 17       0.3145      0.0000      0.0000                         
          MAY 17       0.3145      0.9494      1.9056                         
          JUN 17       0.3145      0.0000      0.0000                         
          JUL 17       0.3145      0.0000      0.0000                         
          AUG 17       0.3145      0.9494      0.0000                         
          SEP 17       0.3145      0.0000      0.0000                         
          OCT 17       0.3145      0.0000      0.0000                         
          NOV 17       0.3145      0.9494      1.9056                         
          DEC 17       0.3145      0.0000      0.0000                         
          JAN 18       0.3145      0.0000      0.0000                         
          FEB 18       0.3145      0.9494      0.0000                         
          MAR 18       0.3145      0.0000      0.0000                         
                                                                              
          APR 18       0.3145      0.0000      0.0000                         
          MAY 18       0.3145      0.9494      1.9056                         
          JUN 18      14.6002     14.2857     14.2857                         
          JUL 18       0.2532      0.0000      0.0000                         
          AUG 18       0.2532      0.8260      0.0000                         
          SEP 18       0.2532      0.0000      0.0000                         
          OCT 18       0.2532      0.0000      0.0000                         
          NOV 18       0.2532      0.7643      1.5960                         
          DEC 18       0.2532      0.0000      0.0000                         
          JAN 19       0.2532      0.0000      0.0000                         
          FEB 19       0.2532      0.7643      0.0000                         
          MAR 19       0.2532      0.0000      0.0000                         
                                                                              
          APR 19       0.2532      0.0000      0.0000                         
          MAY 19       0.2532      0.7643      1.5341                         
          JUN 19       0.2532      0.0000      0.0000                         
          JUL 19       0.2532      0.0000      0.0000                         
          AUG 19       0.2532      0.7643      0.0000                         
          SEP 19       0.2532      0.0000      0.0000                         
          OCT 19       0.2532      0.0000      0.0000                         
          NOV 19       0.2532      0.7643      1.5341                         
          DEC 19       0.2532      0.0000      0.0000                         
          JAN 20       0.2532      0.0000      0.0000                         
          FEB 20      14.5389     15.0500     14.2857                         
          MAR 20       0.1964      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 20       0.1964      0.0000      0.0000                         
          MAY 20       0.1964      0.5926      1.3617                         
          JUN 20       0.1964      0.0000      0.0000                         
          JUL 20       0.1964      0.0000      0.0000                         
          AUG 20       0.1964      0.5926      0.0000                         
          SEP 20       0.1964      0.0000      0.0000                         
          OCT 20       0.1964      0.0000      0.0000                         
          NOV 20       0.1964      0.5926      1.1894                         
          DEC 20       0.1964      0.0000      0.0000                         
          JAN 21       0.1964      0.0000      0.0000                         
          FEB 21       0.1964      0.5926      0.0000                         
          MAR 21       0.1964      0.0000      0.0000                         
                                                                              
          APR 21       0.1964      0.0000      0.0000                         
          MAY 21       0.1964      0.5926      1.1894                         
          JUN 21       0.1964      0.0000      0.0000                         
          JUL 21       0.1964      0.0000      0.0000                         
          AUG 21       0.1964      0.5926      0.0000                         
          SEP 21       0.1964      0.0000      0.0000                         
          OCT 21       0.1964      0.0000      0.0000                         
          NOV 21       0.1964      0.5926      1.1894                         
          DEC 21       0.1964      0.0000      0.0000                         
          JAN 22       0.1964      0.0000      0.0000                         
          FEB 22       0.1964      0.5926      0.0000                         
          MAR 22       0.1964      0.0000      0.0000                         
                                                                              
          APR 22       0.1964      0.0000      0.0000                         
          MAY 22       0.1964      0.5926      1.1894                         
          JUN 22       0.1964      0.0000      0.0000                         
          JUL 22       0.1964      0.0000      0.0000                         
          AUG 22       0.1964      0.5926      0.0000                         
          SEP 22       0.1964      0.0000      0.0000                         
          OCT 22       0.1964      0.0000      0.0000                         
          NOV 22       0.1964      0.5926      1.1894                         
          DEC 22       0.1964      0.0000      0.0000                         
          JAN 23       0.1964      0.0000      0.0000                         
          FEB 23       0.1964      0.5926      0.0000                         
          MAR 23       0.1964      0.0000      0.0000                         
                                                                              
          APR 23       0.1964      0.0000      0.0000                         
          MAY 23       0.1964      0.5926      1.1894                         
          JUN 23      14.4821     14.2857     14.2857                         
          JUL 23       0.1312      0.0000      0.0000                         
          AUG 23       0.1312      0.4615      0.0000                         
          SEP 23       0.1312      0.0000      0.0000                         
          OCT 23       0.1312      0.0000      0.0000                         
          NOV 23       0.1312      0.3960      0.8605                         
          DEC 23       0.1312      0.0000      0.0000                         
          JAN 24       0.1312      0.0000      0.0000                         
          FEB 24       0.1312      0.3960      0.0000                         
          MAR 24       0.1312      0.0000      0.0000                         
                                                                              
          APR 24       0.1312      0.0000      0.0000                         
          MAY 24       0.1312      0.3960      0.7947                         
          JUN 24       0.1312      0.0000      0.0000                         
          JUL 24       0.1312      0.0000      0.0000                         
          AUG 24       0.1312      0.3960      0.0000                         
          SEP 24       0.1312      0.0000      0.0000                         
          OCT 24       0.1312      0.0000      0.0000                         
          NOV 24       0.1312      0.3960      0.7947                         
          DEC 24       0.1312      0.0000      0.0000                         
          JAN 25       0.1312      0.0000      0.0000                         
          FEB 25       0.1312      0.3960      0.0000                         
          MAR 25       0.1312      0.0000      0.0000                         
                                                                              
          APR 25       0.1312      0.0000      0.0000                         
          MAY 25       0.1312      0.3960      0.7947                         
          JUN 25       0.1312      0.0000      0.0000                         
          JUL 25       0.1312      0.0000      0.0000                         
          AUG 25       0.1312      0.3960      0.0000                         
          SEP 25       0.1312      0.0000      0.0000                         
          OCT 25       0.1312      0.0000      0.0000                         
          NOV 25       0.1312      0.3960      0.7947                         
          DEC 25       0.1312      0.0000      0.0000                         
          JAN 26       0.1312      0.0000      0.0000                         
          FEB 26       0.1312      0.3960      0.0000                         
          MAR 26       0.1312      0.0000      0.0000                         
                                                                              
          APR 26       0.1312      0.0000      0.0000                         
          MAY 26       0.1312      0.3960      0.7947                         
          JUN 26       0.1312      0.0000      0.0000                         
          JUL 26       0.1312      0.0000      0.0000                         
          AUG 26       0.1312      0.3960      0.0000                         
          SEP 26       0.1312      0.0000      0.0000                         
          OCT 26       0.1312      0.0000      0.0000                         
          NOV 26       0.1312      0.3960      0.7947                         
          DEC 26       0.1312      0.0000      0.0000                         
          JAN 27       0.1312      0.0000      0.0000                         
          FEB 27       0.1312      0.3960      0.0000                         
          MAR 27       0.1312      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 27       0.1312      0.0000      0.0000                         
          MAY 27       0.1312      0.3960      0.7947                         
          JUN 27       0.1312      0.0000      0.0000                         
          JUL 27       0.1312      0.0000      0.0000                         
          AUG 27       0.1312      0.3960      0.0000                         
          SEP 27       0.1312      0.0000      0.0000                         
          OCT 27       0.1312      0.0000      0.0000                         
          NOV 27       0.1312      0.3960      0.7947                         
          DEC 27       0.1312      0.0000      0.0000                         
          JAN 28       0.1312      0.0000      0.0000                         
          FEB 28       0.1312      0.3960      0.0000                         
          MAR 28       0.1312      0.0000      0.0000                         
                                                                              
          APR 28       0.1312      0.0000      0.0000                         
          MAY 28       0.1312      0.3960      0.7947                         
          JUN 28       0.1312      0.0000      0.0000                         
          JUL 28       0.1312      0.0000      0.0000                         
          AUG 28       0.1312      0.3960      0.0000                         
          SEP 28       0.1312      0.0000      0.0000                         
          OCT 28       0.1312      0.0000      0.0000                         
          NOV 28       0.1312      0.3960      0.7947                         
          DEC 28       0.1312      0.0000      0.0000                         
          JAN 29       0.1312      0.0000      0.0000                         
          FEB 29       0.1312      0.3960      0.0000                         
          MAR 29       0.1312      0.0000      0.0000                         
                                                                              
          APR 29       0.1312      0.0000      0.0000                         
          MAY 29       0.1312      0.3960      0.7947                         
          JUN 29       0.1312      0.0000      0.0000                         
          JUL 29       0.1312      0.0000      0.0000                         
          AUG 29       0.1312      0.3960      0.0000                         
          SEP 29       0.1312      0.0000      0.0000                         
          OCT 29       0.1312      0.0000      0.0000                         
          NOV 29       0.1312      0.3960      0.7947                         
          DEC 29       0.1312      0.0000      0.0000                         
          JAN 30       0.1312      0.0000      0.0000                         
          FEB 30       0.1312      0.3960      0.0000                         
          MAR 30       0.1312      0.0000      0.0000                         
                                                                              
          APR 30       0.1312      0.0000      0.0000                         
          MAY 30       0.1312      0.3960      0.7947                         
          JUN 30       0.1312      0.0000      0.0000                         
          JUL 30       0.1312      0.0000      0.0000                         
          AUG 30       0.1312      0.3960      0.0000                         
          SEP 30      14.4169     14.2857     14.2857                         
          OCT 30       0.0639      0.0000      0.0000                         
          NOV 30       0.0639      0.2607      0.6590                         
          DEC 30       0.0639      0.0000      0.0000                         
          JAN 31       0.0639      0.0000      0.0000                         
          FEB 31       0.0639      0.1930      0.0000                         
          MAR 31       0.0639      0.0000      0.0000                         
                                                                              
          APR 31       0.0639      0.0000      0.0000                         
          MAY 31       0.0639      0.1930      0.3875                         
          JUN 31       0.0639      0.0000      0.0000                         
          JUL 31       0.0639      0.0000      0.0000                         
          AUG 31       0.0639      0.1930      0.0000                         
          SEP 31       0.0639      0.0000      0.0000                         
          OCT 31       0.0639      0.0000      0.0000                         
          NOV 31       0.0639      0.1930      0.3875                         
          DEC 31       0.0639      0.0000      0.0000                         
          JAN 32       0.0639      0.0000      0.0000                         
          FEB 32       0.0639      0.1930      0.0000                         
          MAR 32       0.0639      0.0000      0.0000                         
                                                                              
          APR 32       0.0639      0.0000      0.0000                         
          MAY 32       0.0639      0.1930      0.3875                         
          JUN 32       0.0639      0.0000      0.0000                         
          JUL 32       0.0639      0.0000      0.0000                         
          AUG 32       0.0639      0.1930      0.0000                         
          SEP 32       0.0639      0.0000      0.0000                         
          OCT 32       0.0639      0.0000      0.0000                         
          NOV 32       0.0639      0.1930      0.3875                         
          DEC 32       0.0639      0.0000      0.0000                         
          JAN 33       0.0639      0.0000      0.0000                         
          FEB 33       0.0639      0.1930      0.0000                         
          MAR 33       0.0639      0.0000      0.0000                         
                                                                              
          APR 33       0.0639      0.0000      0.0000                         
          MAY 33      14.3496     14.4788     14.6732                         
                                                                              
</TABLE>                                                                      
                                                                              
                                                                              
                                                                              
<PAGE>                                                                        
                                                                              
                                                                              
<TABLE>                                                                       
                                                                              
Florida Insured Trust 188                                                     
                                                                              
<CAPTION>   MONTHLY   QUARTERLY  SEMI-ANNUALLY                                
          ------------------------------------                                
<S>         <C>         <C>         <C>                                       
IRR:         5.712       5.705       5.680                                    
CUR RET:     5.586       5.619       5.638                                    
L/T RET:     5.687       5.725       5.744                                    
                                                                              
</TABLE>                                                                      
                                                                              
<TABLE>                                                                       
           ESTIMATED PRINCIPAL AND INTEREST                                   
                DISTRIBUTIONS PER UNIT                                        
          ------------------------------------                                
<CAPTION> MON/YR      MONTHLY   QUARTERLY  SEMI-ANNUALLY                      
- ----------------------------------------------                                
          <S>       <C>         <C>         <C>                               
          APR 94     -97.780     -97.780     -97.780                          
                                                                              
          MAY 94       0.2727      0.0909      0.0454                         
          JUN 94       0.4546      0.0000      0.0000                         
          JUL 94       0.4546      0.0000      0.0000                         
          AUG 94       0.4546      1.3719      0.0000                         
          SEP 94       0.4546      0.0000      0.0000                         
          OCT 94       0.4546      0.0000      0.0000                         
          NOV 94       0.4546      1.3719      2.7534                         
          DEC 94       0.4546      0.0000      0.0000                         
          JAN 95       0.4546      0.0000      0.0000                         
          FEB 95       0.4546      1.3719      0.0000                         
          MAR 95       0.4546      0.0000      0.0000                         
                                                                              
          APR 95       0.4546      0.0000      0.0000                         
          MAY 95       0.4546      1.3719      2.7534                         
          JUN 95       0.4546      0.0000      0.0000                         
          JUL 95       0.4546      0.0000      0.0000                         
          AUG 95       0.4546      1.3719      0.0000                         
          SEP 95       0.4546      0.0000      0.0000                         
          OCT 95       0.4546      0.0000      0.0000                         
          NOV 95       0.4546      1.3719      2.7534                         
          DEC 95       0.4546      0.0000      0.0000                         
          JAN 96       0.4546      0.0000      0.0000                         
          FEB 96       0.4546      1.3719      0.0000                         
          MAR 96       0.4546      0.0000      0.0000                         
                                                                              
          APR 96       0.4546      0.0000      0.0000                         
          MAY 96       0.4546      1.3719      2.7534                         
          JUN 96       0.4546      0.0000      0.0000                         
          JUL 96       0.4546      0.0000      0.0000                         
          AUG 96       0.4546      1.3719      0.0000                         
          SEP 96       0.4546      0.0000      0.0000                         
          OCT 96       0.4546      0.0000      0.0000                         
          NOV 96       0.4546      1.3719      2.7534                         
          DEC 96       0.4546      0.0000      0.0000                         
          JAN 97       0.4546      0.0000      0.0000                         
          FEB 97       0.4546      1.3719      0.0000                         
          MAR 97       0.4546      0.0000      0.0000                         
                                                                              
          APR 97       0.4546      0.0000      0.0000                         
          MAY 97       0.4546      1.3719      2.7534                         
          JUN 97       0.4546      0.0000      0.0000                         
          JUL 97       0.4546      0.0000      0.0000                         
          AUG 97       0.4546      1.3719      0.0000                         
          SEP 97       0.4546      0.0000      0.0000                         
          OCT 97       0.4546      0.0000      0.0000                         
          NOV 97       0.4546      1.3719      2.7534                         
          DEC 97       0.4546      0.0000      0.0000                         
          JAN 98       0.4546      0.0000      0.0000                         
          FEB 98       0.4546      1.3719      0.0000                         
          MAR 98       0.4546      0.0000      0.0000                         
                                                                              
          APR 98       0.4546      0.0000      0.0000                         
          MAY 98       0.4546      1.3719      2.7534                         
          JUN 98       0.4546      0.0000      0.0000                         
          JUL 98       0.4546      0.0000      0.0000                         
          AUG 98       0.4546      1.3719      0.0000                         
          SEP 98       0.4546      0.0000      0.0000                         
          OCT 98       0.4546      0.0000      0.0000                         
          NOV 98       0.4546      1.3719      2.7534                         
          DEC 98       0.4546      0.0000      0.0000                         
          JAN 99       0.4546      0.0000      0.0000                         
          FEB 99       0.4546      1.3719      0.0000                         
          MAR 99       0.4546      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 99       0.4546      0.0000      0.0000                         
          MAY 99       0.4546      1.3719      2.7534                         
          JUN 99       0.4546      0.0000      0.0000                         
          JUL 99       0.4546      0.0000      0.0000                         
          AUG 99       0.4546      1.3719      0.0000                         
          SEP 99       0.4546      0.0000      0.0000                         
          OCT 99       0.4546      0.0000      0.0000                         
          NOV 99       0.4546      1.3719      2.7534                         
          DEC 99       0.4546      0.0000      0.0000                         
          JAN 00       0.4546      0.0000      0.0000                         
          FEB 00       0.4546      1.3719      0.0000                         
          MAR 00       0.4546      0.0000      0.0000                         
                                                                              
          APR 00       0.4546      0.0000      0.0000                         
          MAY 00       0.4546      1.3719      2.7534                         
          JUN 00       0.4546      0.0000      0.0000                         
          JUL 00       0.4546      0.0000      0.0000                         
          AUG 00       0.4546      1.3719      0.0000                         
          SEP 00       0.4546      0.0000      0.0000                         
          OCT 00       0.4546      0.0000      0.0000                         
          NOV 00       0.4546      1.3719      2.7534                         
          DEC 00       0.4546      0.0000      0.0000                         
          JAN 01       0.4546      0.0000      0.0000                         
          FEB 01       0.4546      1.3719      0.0000                         
          MAR 01       0.4546      0.0000      0.0000                         
                                                                              
          APR 01       0.4546      0.0000      0.0000                         
          MAY 01       0.4546      1.3719      2.7534                         
          JUN 01       0.4546      0.0000      0.0000                         
          JUL 01       0.4546      0.0000      0.0000                         
          AUG 01       0.4546      1.3719      0.0000                         
          SEP 01       0.4546      0.0000      0.0000                         
          OCT 01       0.4546      0.0000      0.0000                         
          NOV 01       0.4546      1.3719      2.7534                         
          DEC 01       0.4546      0.0000      0.0000                         
          JAN 02       0.4546      0.0000      0.0000                         
          FEB 02       0.4546      1.3719      0.0000                         
          MAR 02       0.4546      0.0000      0.0000                         
                                                                              
          APR 02       0.4546      0.0000      0.0000                         
          MAY 02       0.4546      1.3719      2.7534                         
          JUN 02       0.4546      0.0000      0.0000                         
          JUL 02       0.4546      0.0000      0.0000                         
          AUG 02       0.4546      1.3719      0.0000                         
          SEP 02       0.4546      0.0000      0.0000                         
          OCT 02       0.4546      0.0000      0.0000                         
          NOV 02       0.4546      1.3719      2.7534                         
          DEC 02       0.4546      0.0000      0.0000                         
          JAN 03       0.4546      0.0000      0.0000                         
          FEB 03       0.4546      1.3719      0.0000                         
          MAR 03       0.4546      0.0000      0.0000                         
                                                                              
          APR 03       0.4546      0.0000      0.0000                         
          MAY 03       0.4546      1.3719      2.7534                         
          JUN 03       0.4546      0.0000      0.0000                         
          JUL 03       0.4546      0.0000      0.0000                         
          AUG 03       0.4546      1.3719      0.0000                         
          SEP 03       0.4546      0.0000      0.0000                         
          OCT 03       0.4546      0.0000      0.0000                         
          NOV 03       0.4546      1.3719      2.7534                         
          DEC 03       0.4546      0.0000      0.0000                         
          JAN 04       0.4546      0.0000      0.0000                         
          FEB 04       0.4546      1.3719      0.0000                         
          MAR 04       0.4546      0.0000      0.0000                         
                                                                              
          APR 04      14.7403     14.2857     14.2857                         
          MAY 04       0.3829      1.2998      2.6811                         
          JUN 04       0.3829      0.0000      0.0000                         
          JUL 04       0.3829      0.0000      0.0000                         
          AUG 04       0.3829      1.1555      0.0000                         
          SEP 04       0.3829      0.0000      0.0000                         
          OCT 04       0.3829      0.0000      0.0000                         
          NOV 04       0.3829      1.1555      2.3193                         
          DEC 04       0.3829      0.0000      0.0000                         
          JAN 05       0.3829      0.0000      0.0000                         
          FEB 05       0.3829      1.1555      0.0000                         
          MAR 05       0.3829      0.0000      0.0000                         
                                                                              
          APR 05       0.3829      0.0000      0.0000                         
          MAY 05       0.3829      1.1555      2.3193                         
          JUN 05       0.3829      0.0000      0.0000                         
          JUL 05       0.3829      0.0000      0.0000                         
          AUG 05       0.3829      1.1555      0.0000                         
          SEP 05       0.3829      0.0000      0.0000                         
          OCT 05       0.3829      0.0000      0.0000                         
          NOV 05       0.3829      1.1555      2.3193                         
          DEC 05       0.3829      0.0000      0.0000                         
          JAN 06       0.3829      0.0000      0.0000                         
          FEB 06       0.3829      1.1555      0.0000                         
          MAR 06       0.3829      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 06       0.3829      0.0000      0.0000                         
          MAY 06       0.3829      1.1555      2.3193                         
          JUN 06       0.3829      0.0000      0.0000                         
          JUL 06       0.3829      0.0000      0.0000                         
          AUG 06       0.3829      1.1555      0.0000                         
          SEP 06       0.3829      0.0000      0.0000                         
          OCT 06       0.3829      0.0000      0.0000                         
          NOV 06       0.3829      1.1555      2.3193                         
          DEC 06       0.3829      0.0000      0.0000                         
          JAN 07       0.3829      0.0000      0.0000                         
          FEB 07       0.3829      1.1555      0.0000                         
          MAR 07       0.3829      0.0000      0.0000                         
                                                                              
          APR 07       0.3829      0.0000      0.0000                         
          MAY 07       0.3829      1.1555      2.3193                         
          JUN 07       0.3829      0.0000      0.0000                         
          JUL 07       0.3829      0.0000      0.0000                         
          AUG 07       0.3829      1.1555      0.0000                         
          SEP 07       0.3829      0.0000      0.0000                         
          OCT 07       0.3829      0.0000      0.0000                         
          NOV 07       0.3829      1.1555      2.3193                         
          DEC 07       0.3829      0.0000      0.0000                         
          JAN 08       0.3829      0.0000      0.0000                         
          FEB 08       0.3829      1.1555      0.0000                         
          MAR 08       0.3829      0.0000      0.0000                         
                                                                              
          APR 08       0.3829      0.0000      0.0000                         
          MAY 08       0.3829      1.1555      2.3193                         
          JUN 08       0.3829      0.0000      0.0000                         
          JUL 08       0.3829      0.0000      0.0000                         
          AUG 08       0.3829      1.1555      0.0000                         
          SEP 08       0.3829      0.0000      0.0000                         
          OCT 08       0.3829      0.0000      0.0000                         
          NOV 08       0.3829      1.1555      2.3193                         
          DEC 08       0.3829      0.0000      0.0000                         
          JAN 09       0.3829      0.0000      0.0000                         
          FEB 09       0.3829      1.1555      0.0000                         
          MAR 09       0.3829      0.0000      0.0000                         
                                                                              
          APR 09       0.3829      0.0000      0.0000                         
          MAY 09       0.3829      1.1555      2.3193                         
          JUN 09       0.3829      0.0000      0.0000                         
          JUL 09       0.3829      0.0000      0.0000                         
          AUG 09       0.3829      1.1555      0.0000                         
          SEP 09       0.3829      0.0000      0.0000                         
          OCT 09       0.3829      0.0000      0.0000                         
          NOV 09       0.3829      1.1555      2.3193                         
          DEC 09       0.3829      0.0000      0.0000                         
          JAN 10       0.3829      0.0000      0.0000                         
          FEB 10       0.3829      1.1555      0.0000                         
          MAR 10       0.3829      0.0000      0.0000                         
                                                                              
          APR 10       0.3829      0.0000      0.0000                         
          MAY 10       0.3829      1.1555      2.3193                         
          JUN 10       0.3829      0.0000      0.0000                         
          JUL 10       0.3829      0.0000      0.0000                         
          AUG 10       0.3829      1.1555      0.0000                         
          SEP 10       0.3829      0.0000      0.0000                         
          OCT 10       0.3829      0.0000      0.0000                         
          NOV 10       0.3829      1.1555      2.3193                         
          DEC 10       0.3829      0.0000      0.0000                         
          JAN 11       0.3829      0.0000      0.0000                         
          FEB 11       0.3829      1.1555      0.0000                         
          MAR 11       0.3829      0.0000      0.0000                         
                                                                              
          APR 11       0.3829      0.0000      0.0000                         
          MAY 11       0.3829      1.1555      2.3193                         
          JUN 11       0.3829      0.0000      0.0000                         
          JUL 11       0.3829      0.0000      0.0000                         
          AUG 11       0.3829      1.1555      0.0000                         
          SEP 11       0.3829      0.0000      0.0000                         
          OCT 11       0.3829      0.0000      0.0000                         
          NOV 11       0.3829      1.1555      2.3193                         
          DEC 11       0.3829      0.0000      0.0000                         
          JAN 12       0.3829      0.0000      0.0000                         
          FEB 12       0.3829      1.1555      0.0000                         
          MAR 12       0.3829      0.0000      0.0000                         
                                                                              
          APR 12       0.3829      0.0000      0.0000                         
          MAY 12       0.3829      1.1555      2.3193                         
          JUN 12       0.3829      0.0000      0.0000                         
          JUL 12       0.3829      0.0000      0.0000                         
          AUG 12       0.3829      1.1555      0.0000                         
          SEP 12       0.3829      0.0000      0.0000                         
          OCT 12       0.3829      0.0000      0.0000                         
          NOV 12       0.3829      1.1555      2.3193                         
          DEC 12       0.3829      0.0000      0.0000                         
          JAN 13       0.3829      0.0000      0.0000                         
          FEB 13       0.3829      1.1555      0.0000                         
          MAR 13       0.3829      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 13       0.3829      0.0000      0.0000                         
          MAY 13       0.3829      1.1555      2.3193                         
          JUN 13       0.3829      0.0000      0.0000                         
          JUL 13       0.3829      0.0000      0.0000                         
          AUG 13       0.3829      1.1555      0.0000                         
          SEP 13       0.3829      0.0000      0.0000                         
          OCT 13       0.3829      0.0000      0.0000                         
          NOV 13       0.3829      1.1555      2.3193                         
          DEC 13       0.3829      0.0000      0.0000                         
          JAN 14       0.3829      0.0000      0.0000                         
          FEB 14       0.3829      1.1555      0.0000                         
          MAR 14       0.3829      0.0000      0.0000                         
                                                                              
          APR 14       0.3829      0.0000      0.0000                         
          MAY 14       0.3829      1.1555      2.3193                         
          JUN 14       0.3829      0.0000      0.0000                         
          JUL 14       0.3829      0.0000      0.0000                         
          AUG 14       0.3829      1.1555      0.0000                         
          SEP 14       0.3829      0.0000      0.0000                         
          OCT 14       0.3829      0.0000      0.0000                         
          NOV 14       0.3829      1.1555      2.3193                         
          DEC 14       0.3829      0.0000      0.0000                         
          JAN 15       0.3829      0.0000      0.0000                         
          FEB 15       0.3829      1.1555      0.0000                         
          MAR 15       0.3829      0.0000      0.0000                         
                                                                              
          APR 15       0.3829      0.0000      0.0000                         
          MAY 15       0.3829      1.1555      2.3193                         
          JUN 15       0.3829      0.0000      0.0000                         
          JUL 15       0.3829      0.0000      0.0000                         
          AUG 15       0.3829      1.1555      0.0000                         
          SEP 15       0.3829      0.0000      0.0000                         
          OCT 15       0.3829      0.0000      0.0000                         
          NOV 15       0.3829      1.1555      2.3193                         
          DEC 15       0.3829      0.0000      0.0000                         
          JAN 16       0.3829      0.0000      0.0000                         
          FEB 16       0.3829      1.1555      0.0000                         
          MAR 16       0.3829      0.0000      0.0000                         
                                                                              
          APR 16       0.3829      0.0000      0.0000                         
          MAY 16       0.3829      1.1555      2.3193                         
          JUN 16       0.3829      0.0000      0.0000                         
          JUL 16       0.3829      0.0000      0.0000                         
          AUG 16       0.3829      1.1555      0.0000                         
          SEP 16       0.3829      0.0000      0.0000                         
          OCT 16       0.3829      0.0000      0.0000                         
          NOV 16       0.3829      1.1555      2.3193                         
          DEC 16       0.3829      0.0000      0.0000                         
          JAN 17       0.3829      0.0000      0.0000                         
          FEB 17       0.3829      1.1555      0.0000                         
          MAR 17       0.3829      0.0000      0.0000                         
                                                                              
          APR 17       0.3829      0.0000      0.0000                         
          MAY 17       0.3829      1.1555      2.3193                         
          JUN 17       0.3829      0.0000      0.0000                         
          JUL 17       0.3829      0.0000      0.0000                         
          AUG 17       0.3829      1.1555      0.0000                         
          SEP 17       0.3829      0.0000      0.0000                         
          OCT 17       0.3829      0.0000      0.0000                         
          NOV 17       0.3829      1.1555      2.3193                         
          DEC 17       0.3829      0.0000      0.0000                         
          JAN 18       0.3829      0.0000      0.0000                         
          FEB 18       0.3829      1.1555      0.0000                         
          MAR 18       0.3829      0.0000      0.0000                         
                                                                              
          APR 18       0.3829      0.0000      0.0000                         
          MAY 18       0.3829      1.1555      2.3193                         
          JUN 18       0.3829      0.0000      0.0000                         
          JUL 18       0.3829      0.0000      0.0000                         
          AUG 18       0.3829      1.1555      0.0000                         
          SEP 18       0.3829      0.0000      0.0000                         
          OCT 18       0.3829      0.0000      0.0000                         
          NOV 18       0.3829      1.1555      2.3193                         
          DEC 18       0.3829      0.0000      0.0000                         
          JAN 19       0.3829      0.0000      0.0000                         
          FEB 19       0.3829      1.1555      0.0000                         
          MAR 19       0.3829      0.0000      0.0000                         
                                                                              
          APR 19       0.3829      0.0000      0.0000                         
          MAY 19       0.3829      1.1555      2.3193                         
          JUN 19       0.3829      0.0000      0.0000                         
          JUL 19       0.3829      0.0000      0.0000                         
          AUG 19       0.3829      1.1555      0.0000                         
          SEP 19       0.3829      0.0000      0.0000                         
          OCT 19       0.3829      0.0000      0.0000                         
          NOV 19       0.3829      1.1555      2.3193                         
          DEC 19       0.3829      0.0000      0.0000                         
          JAN 20       0.3829      0.0000      0.0000                         
          FEB 20       0.3829      1.1555      0.0000                         
          MAR 20       0.3829      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 20       0.3829      0.0000      0.0000                         
          MAY 20       0.3829      1.1555      2.3193                         
          JUN 20       0.3829      0.0000      0.0000                         
          JUL 20       0.3829      0.0000      0.0000                         
          AUG 20       0.3829      1.1555      0.0000                         
          SEP 20       0.3829      0.0000      0.0000                         
          OCT 20      14.6686     14.2857     14.2857                         
          NOV 20       0.3141      1.0864      2.2499                         
          DEC 20       0.3141      0.0000      0.0000                         
          JAN 21       0.3141      0.0000      0.0000                         
          FEB 21       0.3141      0.9481      0.0000                         
          MAR 21       0.3141      0.0000      0.0000                         
                                                                              
          APR 21       0.3141      0.0000      0.0000                         
          MAY 21      14.5998     15.2338     16.1887                         
          JUN 21       0.2542      0.0000      0.0000                         
          JUL 21       0.2542      0.0000      0.0000                         
          AUG 21       0.2542      0.7674      0.0000                         
          SEP 21       0.2542      0.0000      0.0000                         
          OCT 21      28.8257     28.5714     28.5714                         
          NOV 21       0.1271      0.6395      1.4119                         
          DEC 21       0.1271      0.0000      0.0000                         
          JAN 22       0.1271      0.0000      0.0000                         
          FEB 22       0.1271      0.3837      0.0000                         
          MAR 22       0.1271      0.0000      0.0000                         
                                                                              
          APR 22       0.1271      0.0000      0.0000                         
          MAY 22      14.4128     14.6694     15.0558                         
          JUN 22       0.0643      0.0000      0.0000                         
          JUL 22       0.0643      0.0000      0.0000                         
          AUG 22       0.0643      0.1940      0.0000                         
          SEP 22       0.0643      0.0000      0.0000                         
          OCT 22       0.0643      0.0000      0.0000                         
          NOV 22       0.0643      0.1940      0.3895                         
          DEC 22       0.0643      0.0000      0.0000                         
          JAN 23       0.0643      0.0000      0.0000                         
          FEB 23       0.0643      0.1940      0.0000                         
          MAR 23       0.0643      0.0000      0.0000                         
                                                                              
          APR 23       0.0643      0.0000      0.0000                         
          MAY 23       0.0643      0.1940      0.3895                         
          JUN 23       0.0643      0.0000      0.0000                         
          JUL 23       0.0643      0.0000      0.0000                         
          AUG 23       0.0643      0.1940      0.0000                         
          SEP 23       0.0643      0.0000      0.0000                         
          OCT 23       0.0643      0.0000      0.0000                         
          NOV 23      14.3178     14.5099     14.7055                         
                                                                              
</TABLE>                                                                      
                                                                              
                                                                              
                                                                              
<PAGE>                                                                        
                                                                              
                                                                              
<TABLE>                                                                       
                                                                              
Massachusetts Insured Trust 112                                               
                                                                              
<CAPTION>   MONTHLY   QUARTERLY  SEMI-ANNUALLY                                
          ------------------------------------                                
<S>         <C>         <C>         <C>                                       
IRR:         5.695       5.683       5.662                                    
CUR RET:     5.693       5.725       5.744                                    
L/T RET:     5.725       5.754       5.773                                    
                                                                              
</TABLE>                                                                      
                                                                              
<TABLE>                                                                       
           ESTIMATED PRINCIPAL AND INTEREST                                   
                DISTRIBUTIONS PER UNIT                                        
          ------------------------------------                                
<CAPTION> MON/YR      MONTHLY   QUARTERLY  SEMI-ANNUALLY                      
- ----------------------------------------------                                
          <S>       <C>         <C>         <C>                               
          APR 94    -101.080    -101.080    -101.080                          
                                                                              
          MAY 94       0.2874      0.0958      0.0479                         
          JUN 94       0.4790      0.0000      0.0000                         
          JUL 94       0.4790      0.0000      0.0000                         
          AUG 94       0.4790      1.4451      0.0000                         
          SEP 94       0.4790      0.0000      0.0000                         
          OCT 94       0.4790      0.0000      0.0000                         
          NOV 94       0.4790      1.4451      2.8998                         
          DEC 94       0.4790      0.0000      0.0000                         
          JAN 95       0.4790      0.0000      0.0000                         
          FEB 95       0.4790      1.4451      0.0000                         
          MAR 95       0.4790      0.0000      0.0000                         
                                                                              
          APR 95       0.4790      0.0000      0.0000                         
          MAY 95       0.4790      1.4451      2.8998                         
          JUN 95       0.4790      0.0000      0.0000                         
          JUL 95       0.4790      0.0000      0.0000                         
          AUG 95       0.4790      1.4451      0.0000                         
          SEP 95       0.4790      0.0000      0.0000                         
          OCT 95       0.4790      0.0000      0.0000                         
          NOV 95       0.4790      1.4451      2.8998                         
          DEC 95       0.4790      0.0000      0.0000                         
          JAN 96       0.4790      0.0000      0.0000                         
          FEB 96       0.4790      1.4451      0.0000                         
          MAR 96       0.4790      0.0000      0.0000                         
                                                                              
          APR 96       0.4790      0.0000      0.0000                         
          MAY 96       0.4790      1.4451      2.8998                         
          JUN 96       0.4790      0.0000      0.0000                         
          JUL 96       0.4790      0.0000      0.0000                         
          AUG 96       0.4790      1.4451      0.0000                         
          SEP 96       0.4790      0.0000      0.0000                         
          OCT 96       0.4790      0.0000      0.0000                         
          NOV 96       0.4790      1.4451      2.8998                         
          DEC 96       0.4790      0.0000      0.0000                         
          JAN 97       0.4790      0.0000      0.0000                         
          FEB 97       0.4790      1.4451      0.0000                         
          MAR 97       0.4790      0.0000      0.0000                         
                                                                              
          APR 97       0.4790      0.0000      0.0000                         
          MAY 97       0.4790      1.4451      2.8998                         
          JUN 97       0.4790      0.0000      0.0000                         
          JUL 97       0.4790      0.0000      0.0000                         
          AUG 97       0.4790      1.4451      0.0000                         
          SEP 97       0.4790      0.0000      0.0000                         
          OCT 97       0.4790      0.0000      0.0000                         
          NOV 97       0.4790      1.4451      2.8998                         
          DEC 97       0.4790      0.0000      0.0000                         
          JAN 98       0.4790      0.0000      0.0000                         
          FEB 98       0.4790      1.4451      0.0000                         
          MAR 98       0.4790      0.0000      0.0000                         
                                                                              
          APR 98       0.4790      0.0000      0.0000                         
          MAY 98       0.4790      1.4451      2.8998                         
          JUN 98       0.4790      0.0000      0.0000                         
          JUL 98       0.4790      0.0000      0.0000                         
          AUG 98       0.4790      1.4451      0.0000                         
          SEP 98       0.4790      0.0000      0.0000                         
          OCT 98       0.4790      0.0000      0.0000                         
          NOV 98       0.4790      1.4451      2.8998                         
          DEC 98       0.4790      0.0000      0.0000                         
          JAN 99       0.4790      0.0000      0.0000                         
          FEB 99       0.4790      1.4451      0.0000                         
          MAR 99       0.4790      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 99       0.4790      0.0000      0.0000                         
          MAY 99       0.4790      1.4451      2.8998                         
          JUN 99       0.4790      0.0000      0.0000                         
          JUL 99       0.4790      0.0000      0.0000                         
          AUG 99       0.4790      1.4451      0.0000                         
          SEP 99       0.4790      0.0000      0.0000                         
          OCT 99       0.4790      0.0000      0.0000                         
          NOV 99       0.4790      1.4451      2.8998                         
          DEC 99       0.4790      0.0000      0.0000                         
          JAN 00       0.4790      0.0000      0.0000                         
          FEB 00       0.4790      1.4451      0.0000                         
          MAR 00       0.4790      0.0000      0.0000                         
                                                                              
          APR 00       0.4790      0.0000      0.0000                         
          MAY 00       0.4790      1.4451      2.8998                         
          JUN 00       0.4790      0.0000      0.0000                         
          JUL 00       0.4790      0.0000      0.0000                         
          AUG 00       0.4790      1.4451      0.0000                         
          SEP 00       0.4790      0.0000      0.0000                         
          OCT 00       0.4790      0.0000      0.0000                         
          NOV 00       0.4790      1.4451      2.8998                         
          DEC 00       0.4790      0.0000      0.0000                         
          JAN 01       0.4790      0.0000      0.0000                         
          FEB 01       0.4790      1.4451      0.0000                         
          MAR 01       0.4790      0.0000      0.0000                         
                                                                              
          APR 01       0.4790      0.0000      0.0000                         
          MAY 01       0.4790      1.4451      2.8998                         
          JUN 01       0.4790      0.0000      0.0000                         
          JUL 01       0.4790      0.0000      0.0000                         
          AUG 01       0.4790      1.4451      0.0000                         
          SEP 01       0.4790      0.0000      0.0000                         
          OCT 01       0.4790      0.0000      0.0000                         
          NOV 01       0.4790      1.4451      2.8998                         
          DEC 01       0.4790      0.0000      0.0000                         
          JAN 02       0.4790      0.0000      0.0000                         
          FEB 02       0.4790      1.4451      0.0000                         
          MAR 02       0.4790      0.0000      0.0000                         
                                                                              
          APR 02       0.4790      0.0000      0.0000                         
          MAY 02       0.4790      1.4451      2.8998                         
          JUN 02       0.4790      0.0000      0.0000                         
          JUL 02       0.4790      0.0000      0.0000                         
          AUG 02       0.4790      1.4451      0.0000                         
          SEP 02       0.4790      0.0000      0.0000                         
          OCT 02       0.4790      0.0000      0.0000                         
          NOV 02       0.4790      1.4451      2.8998                         
          DEC 02       0.4790      0.0000      0.0000                         
          JAN 03       0.4790      0.0000      0.0000                         
          FEB 03       0.4790      1.4451      0.0000                         
          MAR 03       0.4790      0.0000      0.0000                         
                                                                              
          APR 03       0.4790      0.0000      0.0000                         
          MAY 03       0.4790      1.4451      2.8998                         
          JUN 03       0.4790      0.0000      0.0000                         
          JUL 03       0.4790      0.0000      0.0000                         
          AUG 03       0.4790      1.4451      0.0000                         
          SEP 03       0.4790      0.0000      0.0000                         
          OCT 03       0.4790      0.0000      0.0000                         
          NOV 03       0.4790      1.4451      2.8998                         
          DEC 03       0.4790      0.0000      0.0000                         
          JAN 04       0.4790      0.0000      0.0000                         
          FEB 04       0.4790      1.4451      0.0000                         
          MAR 04       0.4790      0.0000      0.0000                         
                                                                              
          APR 04       0.4790      0.0000      0.0000                         
          MAY 04       0.4790      1.4451      2.8998                         
          JUN 04       0.4790      0.0000      0.0000                         
          JUL 04      14.7647     14.2857     14.2857                         
          AUG 04       0.4043      1.3700      0.0000                         
          SEP 04       0.4043      0.0000      0.0000                         
          OCT 04      14.6900     14.2857     14.2857                         
          NOV 04       0.3289      1.1441      2.5225                         
          DEC 04       0.3289      0.0000      0.0000                         
          JAN 05       0.3289      0.0000      0.0000                         
          FEB 05       0.3289      0.9927      0.0000                         
          MAR 05       0.3289      0.0000      0.0000                         
                                                                              
          APR 05       0.3289      0.0000      0.0000                         
          MAY 05       0.3289      0.9927      1.9922                         
          JUN 05       0.3289      0.0000      0.0000                         
          JUL 05       0.3289      0.0000      0.0000                         
          AUG 05       0.3289      0.9927      0.0000                         
          SEP 05       0.3289      0.0000      0.0000                         
          OCT 05       0.3289      0.0000      0.0000                         
          NOV 05       0.3289      0.9927      1.9922                         
          DEC 05       0.3289      0.0000      0.0000                         
          JAN 06       0.3289      0.0000      0.0000                         
          FEB 06       0.3289      0.9927      0.0000                         
          MAR 06       0.3289      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 06       0.3289      0.0000      0.0000                         
          MAY 06       0.3289      0.9927      1.9922                         
          JUN 06       0.3289      0.0000      0.0000                         
          JUL 06       0.3289      0.0000      0.0000                         
          AUG 06       0.3289      0.9927      0.0000                         
          SEP 06       0.3289      0.0000      0.0000                         
          OCT 06       0.3289      0.0000      0.0000                         
          NOV 06       0.3289      0.9927      1.9922                         
          DEC 06       0.3289      0.0000      0.0000                         
          JAN 07       0.3289      0.0000      0.0000                         
          FEB 07       0.3289      0.9927      0.0000                         
          MAR 07       0.3289      0.0000      0.0000                         
                                                                              
          APR 07       0.3289      0.0000      0.0000                         
          MAY 07       0.3289      0.9927      1.9922                         
          JUN 07       0.3289      0.0000      0.0000                         
          JUL 07       0.3289      0.0000      0.0000                         
          AUG 07       0.3289      0.9927      0.0000                         
          SEP 07       0.3289      0.0000      0.0000                         
          OCT 07       0.3289      0.0000      0.0000                         
          NOV 07       0.3289      0.9927      1.9922                         
          DEC 07       0.3289      0.0000      0.0000                         
          JAN 08       0.3289      0.0000      0.0000                         
          FEB 08       0.3289      0.9927      0.0000                         
          MAR 08       0.3289      0.0000      0.0000                         
                                                                              
          APR 08       0.3289      0.0000      0.0000                         
          MAY 08       0.3289      0.9927      1.9922                         
          JUN 08       0.3289      0.0000      0.0000                         
          JUL 08       0.3289      0.0000      0.0000                         
          AUG 08       0.3289      0.9927      0.0000                         
          SEP 08       0.3289      0.0000      0.0000                         
          OCT 08       0.3289      0.0000      0.0000                         
          NOV 08       0.3289      0.9927      1.9922                         
          DEC 08       0.3289      0.0000      0.0000                         
          JAN 09       0.3289      0.0000      0.0000                         
          FEB 09       0.3289      0.9927      0.0000                         
          MAR 09       0.3289      0.0000      0.0000                         
                                                                              
          APR 09       0.3289      0.0000      0.0000                         
          MAY 09       0.3289      0.9927      1.9922                         
          JUN 09       0.3289      0.0000      0.0000                         
          JUL 09       0.3289      0.0000      0.0000                         
          AUG 09       0.3289      0.9927      0.0000                         
          SEP 09       0.3289      0.0000      0.0000                         
          OCT 09       0.3289      0.0000      0.0000                         
          NOV 09       0.3289      0.9927      1.9922                         
          DEC 09       0.3289      0.0000      0.0000                         
          JAN 10       0.3289      0.0000      0.0000                         
          FEB 10       0.3289      0.9927      0.0000                         
          MAR 10       0.3289      0.0000      0.0000                         
                                                                              
          APR 10       0.3289      0.0000      0.0000                         
          MAY 10       0.3289      0.9927      1.9922                         
          JUN 10       0.3289      0.0000      0.0000                         
          JUL 10       0.3289      0.0000      0.0000                         
          AUG 10       0.3289      0.9927      0.0000                         
          SEP 10       0.3289      0.0000      0.0000                         
          OCT 10       0.3289      0.0000      0.0000                         
          NOV 10       0.3289      0.9927      1.9922                         
          DEC 10       0.3289      0.0000      0.0000                         
          JAN 11       0.3289      0.0000      0.0000                         
          FEB 11       0.3289      0.9927      0.0000                         
          MAR 11       0.3289      0.0000      0.0000                         
                                                                              
          APR 11       0.3289      0.0000      0.0000                         
          MAY 11       0.3289      0.9927      1.9922                         
          JUN 11       0.3289      0.0000      0.0000                         
          JUL 11       0.3289      0.0000      0.0000                         
          AUG 11       0.3289      0.9927      0.0000                         
          SEP 11       0.3289      0.0000      0.0000                         
          OCT 11       0.3289      0.0000      0.0000                         
          NOV 11       0.3289      0.9927      1.9922                         
          DEC 11       0.3289      0.0000      0.0000                         
          JAN 12       0.3289      0.0000      0.0000                         
          FEB 12       0.3289      0.9927      0.0000                         
          MAR 12       0.3289      0.0000      0.0000                         
                                                                              
          APR 12       0.3289      0.0000      0.0000                         
          MAY 12       0.3289      0.9927      1.9922                         
          JUN 12       0.3289      0.0000      0.0000                         
          JUL 12       0.3289      0.0000      0.0000                         
          AUG 12       0.3289      0.9927      0.0000                         
          SEP 12       0.3289      0.0000      0.0000                         
          OCT 12       0.3289      0.0000      0.0000                         
          NOV 12       0.3289      0.9927      1.9922                         
          DEC 12       0.3289      0.0000      0.0000                         
          JAN 13      14.6147     14.2857     14.2857                         
          FEB 13       0.2602      0.9235      0.0000                         
          MAR 13       0.2602      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 13       0.2602      0.0000      0.0000                         
          MAY 13       0.2602      0.7852      1.7146                         
          JUN 13       0.2602      0.0000      0.0000                         
          JUL 13       0.2602      0.0000      0.0000                         
          AUG 13       0.2602      0.7852      0.0000                         
          SEP 13       0.2602      0.0000      0.0000                         
          OCT 13       0.2602      0.0000      0.0000                         
          NOV 13       0.2602      0.7852      1.5759                         
          DEC 13       0.2602      0.0000      0.0000                         
          JAN 14       0.2602      0.0000      0.0000                         
          FEB 14       0.2602      0.7852      0.0000                         
          MAR 14       0.2602      0.0000      0.0000                         
                                                                              
          APR 14       0.2602      0.0000      0.0000                         
          MAY 14       0.2602      0.7852      1.5759                         
          JUN 14       0.2602      0.0000      0.0000                         
          JUL 14       0.2602      0.0000      0.0000                         
          AUG 14       0.2602      0.7852      0.0000                         
          SEP 14       0.2602      0.0000      0.0000                         
          OCT 14       0.2602      0.0000      0.0000                         
          NOV 14       0.2602      0.7852      1.5759                         
          DEC 14       0.2602      0.0000      0.0000                         
          JAN 15       0.2602      0.0000      0.0000                         
          FEB 15       0.2602      0.7852      0.0000                         
          MAR 15       0.2602      0.0000      0.0000                         
                                                                              
          APR 15       0.2602      0.0000      0.0000                         
          MAY 15       0.2602      0.7852      1.5759                         
          JUN 15       0.2602      0.0000      0.0000                         
          JUL 15       0.2602      0.0000      0.0000                         
          AUG 15       0.2602      0.7852      0.0000                         
          SEP 15       0.2602      0.0000      0.0000                         
          OCT 15       0.2602      0.0000      0.0000                         
          NOV 15       0.2602      0.7852      1.5759                         
          DEC 15       0.2602      0.0000      0.0000                         
          JAN 16       0.2602      0.0000      0.0000                         
          FEB 16       0.2602      0.7852      0.0000                         
          MAR 16       0.2602      0.0000      0.0000                         
                                                                              
          APR 16       0.2602      0.0000      0.0000                         
          MAY 16       0.2602      0.7852      1.5759                         
          JUN 16       0.2602      0.0000      0.0000                         
          JUL 16      14.5459     14.2857     14.2857                         
          AUG 16       0.1944      0.7190      0.0000                         
          SEP 16       0.1944      0.0000      0.0000                         
          OCT 16       0.1944      0.0000      0.0000                         
          NOV 16       0.1944      0.5867      1.3102                         
          DEC 16       0.1944      0.0000      0.0000                         
          JAN 17       0.1944      0.0000      0.0000                         
          FEB 17       0.1944      0.5867      0.0000                         
          MAR 17       0.1944      0.0000      0.0000                         
                                                                              
          APR 17       0.1944      0.0000      0.0000                         
          MAY 17       0.1944      0.5867      1.1774                         
          JUN 17       0.1944      0.0000      0.0000                         
          JUL 17       0.1944      0.0000      0.0000                         
          AUG 17       0.1944      0.5867      0.0000                         
          SEP 17       0.1944      0.0000      0.0000                         
          OCT 17       0.1944      0.0000      0.0000                         
          NOV 17       0.1944      0.5867      1.1774                         
          DEC 17       0.1944      0.0000      0.0000                         
          JAN 18       0.1944      0.0000      0.0000                         
          FEB 18       0.1944      0.5867      0.0000                         
          MAR 18       0.1944      0.0000      0.0000                         
                                                                              
          APR 18       0.1944      0.0000      0.0000                         
          MAY 18       0.1944      0.5867      1.1774                         
          JUN 18       0.1944      0.0000      0.0000                         
          JUL 18       0.1944      0.0000      0.0000                         
          AUG 18       0.1944      0.5867      0.0000                         
          SEP 18       0.1944      0.0000      0.0000                         
          OCT 18       0.1944      0.0000      0.0000                         
          NOV 18       0.1944      0.5867      1.1774                         
          DEC 18       0.1944      0.0000      0.0000                         
          JAN 19       0.1944      0.0000      0.0000                         
          FEB 19       0.1944      0.5867      0.0000                         
          MAR 19       0.1944      0.0000      0.0000                         
                                                                              
          APR 19       0.1944      0.0000      0.0000                         
          MAY 19       0.1944      0.5867      1.1774                         
          JUN 19       0.1944      0.0000      0.0000                         
          JUL 19      14.4801     14.2857     14.2857                         
          AUG 19       0.1241      0.5160      0.0000                         
          SEP 19       0.1241      0.0000      0.0000                         
          OCT 19       0.1241      0.0000      0.0000                         
          NOV 19       0.1241      0.3747      0.8939                         
          DEC 19       0.1241      0.0000      0.0000                         
          JAN 20       0.1241      0.0000      0.0000                         
          FEB 20       0.1241      0.3747      0.0000                         
          MAR 20       0.1241      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 20       0.1241      0.0000      0.0000                         
          MAY 20       0.1241      0.3747      0.7522                         
          JUN 20       0.1241      0.0000      0.0000                         
          JUL 20       0.1241      0.0000      0.0000                         
          AUG 20       0.1241      0.3747      0.0000                         
          SEP 20       0.1241      0.0000      0.0000                         
          OCT 20       0.1241      0.0000      0.0000                         
          NOV 20       0.1241      0.3747      0.7522                         
          DEC 20       0.1241      0.0000      0.0000                         
          JAN 21       0.1241      0.0000      0.0000                         
          FEB 21       0.1241      0.3747      0.0000                         
          MAR 21       0.1241      0.0000      0.0000                         
                                                                              
          APR 21       0.1241      0.0000      0.0000                         
          MAY 21       0.1241      0.3747      0.7522                         
          JUN 21       0.1241      0.0000      0.0000                         
          JUL 21       0.1241      0.0000      0.0000                         
          AUG 21       0.1241      0.3747      0.0000                         
          SEP 21       0.1241      0.0000      0.0000                         
          OCT 21       0.1241      0.0000      0.0000                         
          NOV 21       0.1241      0.3747      0.7522                         
          DEC 21       0.1241      0.0000      0.0000                         
          JAN 22       0.1241      0.0000      0.0000                         
          FEB 22       0.1241      0.3747      0.0000                         
          MAR 22      14.4098     14.2857     14.2857                         
                                                                              
          APR 22       0.0613      0.0000      0.0000                         
          MAY 22       0.0613      0.2483      0.6253                         
          JUN 22       0.0613      0.0000      0.0000                         
          JUL 22       0.0613      0.0000      0.0000                         
          AUG 22       0.0613      0.1851      0.0000                         
          SEP 22       0.0613      0.0000      0.0000                         
          OCT 22       0.0613      0.0000      0.0000                         
          NOV 22       0.0613      0.1851      0.3716                         
          DEC 22       0.0613      0.0000      0.0000                         
          JAN 23       0.0613      0.0000      0.0000                         
          FEB 23       0.0613      0.1851      0.0000                         
          MAR 23       0.0613      0.0000      0.0000                         
                                                                              
          APR 23       0.0613      0.0000      0.0000                         
          MAY 23       0.0613      0.1851      0.3716                         
          JUN 23       0.0613      0.0000      0.0000                         
          JUL 23       0.0613      0.0000      0.0000                         
          AUG 23       0.0613      0.1851      0.0000                         
          SEP 23       0.0613      0.0000      0.0000                         
          OCT 23       0.0613      0.0000      0.0000                         
          NOV 23       0.0613      0.1851      0.3716                         
          DEC 23       0.0613      0.0000      0.0000                         
          JAN 24       0.0613      0.0000      0.0000                         
          FEB 24       0.0613      0.1851      0.0000                         
          MAR 24       0.0613      0.0000      0.0000                         
                                                                              
          APR 24       0.0613      0.0000      0.0000                         
          MAY 24       0.0613      0.1851      0.3716                         
          JUN 24       0.0613      0.0000      0.0000                         
          JUL 24      14.3470     14.4091     14.4096                         
                                                                              
</TABLE>                                                                      
                                                                              
                                                                              
                                                                              
<PAGE>                                                                        
                                                                              
                                                                              
<TABLE>                                                                       
                                                                              
New York Insured Trust 215                                                    
                                                                              
<CAPTION>   MONTHLY   QUARTERLY  SEMI-ANNUALLY                                
          ------------------------------------                                
<S>         <C>         <C>         <C>                                       
IRR:         5.601       5.594       5.570                                    
CUR RET:     5.581       5.613       5.632                                    
L/T RET:     5.620       5.649       5.668                                    
                                                                              
</TABLE>                                                                      
                                                                              
<TABLE>                                                                       
           ESTIMATED PRINCIPAL AND INTEREST                                   
                DISTRIBUTIONS PER UNIT                                        
          ------------------------------------                                
<CAPTION> MON/YR      MONTHLY   QUARTERLY  SEMI-ANNUALLY                      
- ----------------------------------------------                                
          <S>       <C>         <C>         <C>                               
          APR 94     -99.980     -99.980     -99.980                          
                                                                              
          MAY 94       0.2786      0.0928      0.0464                         
          JUN 94       0.4644      0.0000      0.0000                         
          JUL 94       0.4644      0.0000      0.0000                         
          AUG 94       0.4644      1.4014      0.0000                         
          SEP 94       0.4644      0.0000      0.0000                         
          OCT 94       0.4644      0.0000      0.0000                         
          NOV 94       0.4644      1.4014      2.8123                         
          DEC 94       0.4644      0.0000      0.0000                         
          JAN 95       0.4644      0.0000      0.0000                         
          FEB 95       0.4644      1.4014      0.0000                         
          MAR 95       0.4644      0.0000      0.0000                         
                                                                              
          APR 95       0.4644      0.0000      0.0000                         
          MAY 95       0.4644      1.4014      2.8123                         
          JUN 95       0.4644      0.0000      0.0000                         
          JUL 95       0.4644      0.0000      0.0000                         
          AUG 95       0.4644      1.4014      0.0000                         
          SEP 95       0.4644      0.0000      0.0000                         
          OCT 95       0.4644      0.0000      0.0000                         
          NOV 95       0.4644      1.4014      2.8123                         
          DEC 95       0.4644      0.0000      0.0000                         
          JAN 96       0.4644      0.0000      0.0000                         
          FEB 96       0.4644      1.4014      0.0000                         
          MAR 96       0.4644      0.0000      0.0000                         
                                                                              
          APR 96       0.4644      0.0000      0.0000                         
          MAY 96       0.4644      1.4014      2.8123                         
          JUN 96       0.4644      0.0000      0.0000                         
          JUL 96       0.4644      0.0000      0.0000                         
          AUG 96       0.4644      1.4014      0.0000                         
          SEP 96       0.4644      0.0000      0.0000                         
          OCT 96       0.4644      0.0000      0.0000                         
          NOV 96       0.4644      1.4014      2.8123                         
          DEC 96       0.4644      0.0000      0.0000                         
          JAN 97       0.4644      0.0000      0.0000                         
          FEB 97       0.4644      1.4014      0.0000                         
          MAR 97       0.4644      0.0000      0.0000                         
                                                                              
          APR 97       0.4644      0.0000      0.0000                         
          MAY 97       0.4644      1.4014      2.8123                         
          JUN 97       0.4644      0.0000      0.0000                         
          JUL 97       0.4644      0.0000      0.0000                         
          AUG 97       0.4644      1.4014      0.0000                         
          SEP 97       0.4644      0.0000      0.0000                         
          OCT 97       0.4644      0.0000      0.0000                         
          NOV 97       0.4644      1.4014      2.8123                         
          DEC 97       0.4644      0.0000      0.0000                         
          JAN 98       0.4644      0.0000      0.0000                         
          FEB 98       0.4644      1.4014      0.0000                         
          MAR 98       0.4644      0.0000      0.0000                         
                                                                              
          APR 98       0.4644      0.0000      0.0000                         
          MAY 98       0.4644      1.4014      2.8123                         
          JUN 98       0.4644      0.0000      0.0000                         
          JUL 98       0.4644      0.0000      0.0000                         
          AUG 98       0.4644      1.4014      0.0000                         
          SEP 98       0.4644      0.0000      0.0000                         
          OCT 98       0.4644      0.0000      0.0000                         
          NOV 98       0.4644      1.4014      2.8123                         
          DEC 98       0.4644      0.0000      0.0000                         
          JAN 99       0.4644      0.0000      0.0000                         
          FEB 99       0.4644      1.4014      0.0000                         
          MAR 99       0.4644      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 99       0.4644      0.0000      0.0000                         
          MAY 99       0.4644      1.4014      2.8123                         
          JUN 99       0.4644      0.0000      0.0000                         
          JUL 99       0.4644      0.0000      0.0000                         
          AUG 99       0.4644      1.4014      0.0000                         
          SEP 99       0.4644      0.0000      0.0000                         
          OCT 99       0.4644      0.0000      0.0000                         
          NOV 99       0.4644      1.4014      2.8123                         
          DEC 99       0.4644      0.0000      0.0000                         
          JAN 00       0.4644      0.0000      0.0000                         
          FEB 00       0.4644      1.4014      0.0000                         
          MAR 00       0.4644      0.0000      0.0000                         
                                                                              
          APR 00       0.4644      0.0000      0.0000                         
          MAY 00       0.4644      1.4014      2.8123                         
          JUN 00       0.4644      0.0000      0.0000                         
          JUL 00       0.4644      0.0000      0.0000                         
          AUG 00       0.4644      1.4014      0.0000                         
          SEP 00       0.4644      0.0000      0.0000                         
          OCT 00       0.4644      0.0000      0.0000                         
          NOV 00       0.4644      1.4014      2.8123                         
          DEC 00       0.4644      0.0000      0.0000                         
          JAN 01       0.4644      0.0000      0.0000                         
          FEB 01       0.4644      1.4014      0.0000                         
          MAR 01       0.4644      0.0000      0.0000                         
                                                                              
          APR 01       0.4644      0.0000      0.0000                         
          MAY 01       0.4644      1.4014      2.8123                         
          JUN 01       0.4644      0.0000      0.0000                         
          JUL 01       0.4644      0.0000      0.0000                         
          AUG 01       0.4644      1.4014      0.0000                         
          SEP 01       0.4644      0.0000      0.0000                         
          OCT 01       0.4644      0.0000      0.0000                         
          NOV 01       0.4644      1.4014      2.8123                         
          DEC 01       0.4644      0.0000      0.0000                         
          JAN 02       0.4644      0.0000      0.0000                         
          FEB 02       0.4644      1.4014      0.0000                         
          MAR 02       0.4644      0.0000      0.0000                         
                                                                              
          APR 02       0.4644      0.0000      0.0000                         
          MAY 02       0.4644      1.4014      2.8123                         
          JUN 02       0.4644      0.0000      0.0000                         
          JUL 02       0.4644      0.0000      0.0000                         
          AUG 02       0.4644      1.4014      0.0000                         
          SEP 02       0.4644      0.0000      0.0000                         
          OCT 02      14.9644     14.5000     14.5000                         
          NOV 02       0.3837      1.3203      2.7310                         
          DEC 02       0.3837      0.0000      0.0000                         
          JAN 03       0.3837      0.0000      0.0000                         
          FEB 03       0.3837      1.1582      0.0000                         
          MAR 03       0.3837      0.0000      0.0000                         
                                                                              
          APR 03       0.3837      0.0000      0.0000                         
          MAY 03       0.3837      1.1582      2.3245                         
          JUN 03       0.3837      0.0000      0.0000                         
          JUL 03       0.3837      0.0000      0.0000                         
          AUG 03       0.3837      1.1582      0.0000                         
          SEP 03       0.3837      0.0000      0.0000                         
          OCT 03       0.3837      0.0000      0.0000                         
          NOV 03       0.3837      1.1582      2.3245                         
          DEC 03       0.3837      0.0000      0.0000                         
          JAN 04       0.3837      0.0000      0.0000                         
          FEB 04       0.3837      1.1582      0.0000                         
          MAR 04       0.3837      0.0000      0.0000                         
                                                                              
          APR 04       0.3837      0.0000      0.0000                         
          MAY 04       0.3837      1.1582      2.3245                         
          JUN 04       0.3837      0.0000      0.0000                         
          JUL 04       0.3837      0.0000      0.0000                         
          AUG 04       0.3837      1.1582      0.0000                         
          SEP 04       0.3837      0.0000      0.0000                         
          OCT 04       0.3837      0.0000      0.0000                         
          NOV 04       0.3837      1.1582      2.3245                         
          DEC 04       0.3837      0.0000      0.0000                         
          JAN 05       0.3837      0.0000      0.0000                         
          FEB 05       0.3837      1.1582      0.0000                         
          MAR 05       0.3837      0.0000      0.0000                         
                                                                              
          APR 05       0.3837      0.0000      0.0000                         
          MAY 05       0.3837      1.1582      2.3245                         
          JUN 05       0.3837      0.0000      0.0000                         
          JUL 05       0.3837      0.0000      0.0000                         
          AUG 05       0.3837      1.1582      0.0000                         
          SEP 05       0.3837      0.0000      0.0000                         
          OCT 05       0.3837      0.0000      0.0000                         
          NOV 05       0.3837      1.1582      2.3245                         
          DEC 05       0.3837      0.0000      0.0000                         
          JAN 06       0.3837      0.0000      0.0000                         
          FEB 06       0.3837      1.1582      0.0000                         
          MAR 06       0.3837      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 06       0.3837      0.0000      0.0000                         
          MAY 06       0.3837      1.1582      2.3245                         
          JUN 06       0.3837      0.0000      0.0000                         
          JUL 06       0.3837      0.0000      0.0000                         
          AUG 06       0.3837      1.1582      0.0000                         
          SEP 06       0.3837      0.0000      0.0000                         
          OCT 06       0.3837      0.0000      0.0000                         
          NOV 06       0.3837      1.1582      2.3245                         
          DEC 06       0.3837      0.0000      0.0000                         
          JAN 07       0.3837      0.0000      0.0000                         
          FEB 07       0.3837      1.1582      0.0000                         
          MAR 07       0.3837      0.0000      0.0000                         
                                                                              
          APR 07       0.3837      0.0000      0.0000                         
          MAY 07       0.3837      1.1582      2.3245                         
          JUN 07       0.3837      0.0000      0.0000                         
          JUL 07       0.3837      0.0000      0.0000                         
          AUG 07       0.3837      1.1582      0.0000                         
          SEP 07       0.3837      0.0000      0.0000                         
          OCT 07       0.3837      0.0000      0.0000                         
          NOV 07       0.3837      1.1582      2.3245                         
          DEC 07       0.3837      0.0000      0.0000                         
          JAN 08       0.3837      0.0000      0.0000                         
          FEB 08       0.3837      1.1582      0.0000                         
          MAR 08       0.3837      0.0000      0.0000                         
                                                                              
          APR 08       0.3837      0.0000      0.0000                         
          MAY 08       0.3837      1.1582      2.3245                         
          JUN 08       0.3837      0.0000      0.0000                         
          JUL 08       0.3837      0.0000      0.0000                         
          AUG 08       0.3837      1.1582      0.0000                         
          SEP 08       0.3837      0.0000      0.0000                         
          OCT 08       0.3837      0.0000      0.0000                         
          NOV 08       0.3837      1.1582      2.3245                         
          DEC 08       0.3837      0.0000      0.0000                         
          JAN 09       0.3837      0.0000      0.0000                         
          FEB 09       0.3837      1.1582      0.0000                         
          MAR 09       0.3837      0.0000      0.0000                         
                                                                              
          APR 09       0.3837      0.0000      0.0000                         
          MAY 09       0.3837      1.1582      2.3245                         
          JUN 09       0.3837      0.0000      0.0000                         
          JUL 09       0.3837      0.0000      0.0000                         
          AUG 09       0.3837      1.1582      0.0000                         
          SEP 09       0.3837      0.0000      0.0000                         
          OCT 09       0.3837      0.0000      0.0000                         
          NOV 09       0.3837      1.1582      2.3245                         
          DEC 09       0.3837      0.0000      0.0000                         
          JAN 10       0.3837      0.0000      0.0000                         
          FEB 10       0.3837      1.1582      0.0000                         
          MAR 10       0.3837      0.0000      0.0000                         
                                                                              
          APR 10       0.3837      0.0000      0.0000                         
          MAY 10       0.3837      1.1582      2.3245                         
          JUN 10       0.3837      0.0000      0.0000                         
          JUL 10       0.3837      0.0000      0.0000                         
          AUG 10       0.3837      1.1582      0.0000                         
          SEP 10       0.3837      0.0000      0.0000                         
          OCT 10       0.3837      0.0000      0.0000                         
          NOV 10       0.3837      1.1582      2.3245                         
          DEC 10       0.3837      0.0000      0.0000                         
          JAN 11       0.3837      0.0000      0.0000                         
          FEB 11       0.3837      1.1582      0.0000                         
          MAR 11       0.3837      0.0000      0.0000                         
                                                                              
          APR 11       0.3837      0.0000      0.0000                         
          MAY 11      14.6695     15.4439     16.6103                         
          JUN 11       0.3164      0.0000      0.0000                         
          JUL 11       0.3164      0.0000      0.0000                         
          AUG 11       0.3164      0.9552      0.0000                         
          SEP 11       0.3164      0.0000      0.0000                         
          OCT 11       0.3164      0.0000      0.0000                         
          NOV 11       0.3164      0.9552      1.9172                         
          DEC 11       0.3164      0.0000      0.0000                         
          JAN 12       0.3164      0.0000      0.0000                         
          FEB 12       0.3164      0.9552      0.0000                         
          MAR 12       0.3164      0.0000      0.0000                         
                                                                              
          APR 12       0.3164      0.0000      0.0000                         
          MAY 12       0.3164      0.9552      1.9172                         
          JUN 12       0.3164      0.0000      0.0000                         
          JUL 12       0.3164      0.0000      0.0000                         
          AUG 12       0.3164      0.9552      0.0000                         
          SEP 12       0.3164      0.0000      0.0000                         
          OCT 12       0.3164      0.0000      0.0000                         
          NOV 12       0.3164      0.9552      1.9172                         
          DEC 12       0.3164      0.0000      0.0000                         
          JAN 13       0.3164      0.0000      0.0000                         
          FEB 13       0.3164      0.9552      0.0000                         
          MAR 13       0.3164      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 13       0.3164      0.0000      0.0000                         
          MAY 13       0.3164      0.9552      1.9172                         
          JUN 13       0.3164      0.0000      0.0000                         
          JUL 13       0.3164      0.0000      0.0000                         
          AUG 13       0.3164      0.9552      0.0000                         
          SEP 13       0.3164      0.0000      0.0000                         
          OCT 13       0.3164      0.0000      0.0000                         
          NOV 13       0.3164      0.9552      1.9172                         
          DEC 13       0.3164      0.0000      0.0000                         
          JAN 14       0.3164      0.0000      0.0000                         
          FEB 14       0.3164      0.9552      0.0000                         
          MAR 14       0.3164      0.0000      0.0000                         
                                                                              
          APR 14       0.3164      0.0000      0.0000                         
          MAY 14       0.3164      0.9552      1.9172                         
          JUN 14       0.3164      0.0000      0.0000                         
          JUL 14       0.3164      0.0000      0.0000                         
          AUG 14       0.3164      0.9552      0.0000                         
          SEP 14       0.3164      0.0000      0.0000                         
          OCT 14       0.3164      0.0000      0.0000                         
          NOV 14       0.3164      0.9552      1.9172                         
          DEC 14       0.3164      0.0000      0.0000                         
          JAN 15       0.3164      0.0000      0.0000                         
          FEB 15       0.3164      0.9552      0.0000                         
          MAR 15       0.3164      0.0000      0.0000                         
                                                                              
          APR 15       0.3164      0.0000      0.0000                         
          MAY 15       0.3164      0.9552      1.9172                         
          JUN 15       0.3164      0.0000      0.0000                         
          JUL 15      14.6022     14.2857     14.2857                         
          AUG 15       0.2506      0.8890      0.0000                         
          SEP 15       0.2506      0.0000      0.0000                         
          OCT 15       0.2506      0.0000      0.0000                         
          NOV 15       0.2506      0.7566      1.6515                         
          DEC 15       0.2506      0.0000      0.0000                         
          JAN 16       0.2506      0.0000      0.0000                         
          FEB 16       0.2506      0.7566      0.0000                         
          MAR 16       0.2506      0.0000      0.0000                         
                                                                              
          APR 16       0.2506      0.0000      0.0000                         
          MAY 16       0.2506      0.7566      1.5187                         
          JUN 16       0.2506      0.0000      0.0000                         
          JUL 16       0.2506      0.0000      0.0000                         
          AUG 16       0.2506      0.7566      0.0000                         
          SEP 16       0.2506      0.0000      0.0000                         
          OCT 16       0.2506      0.0000      0.0000                         
          NOV 16       0.2506      0.7566      1.5187                         
          DEC 16       0.2506      0.0000      0.0000                         
          JAN 17       0.2506      0.0000      0.0000                         
          FEB 17       0.2506      0.7566      0.0000                         
          MAR 17       0.2506      0.0000      0.0000                         
                                                                              
          APR 17       0.2506      0.0000      0.0000                         
          MAY 17       0.2506      0.7566      1.5187                         
          JUN 17       0.2506      0.0000      0.0000                         
          JUL 17       0.2506      0.0000      0.0000                         
          AUG 17       0.2506      0.7566      0.0000                         
          SEP 17       0.2506      0.0000      0.0000                         
          OCT 17       0.2506      0.0000      0.0000                         
          NOV 17       0.2506      0.7566      1.5187                         
          DEC 17       0.2506      0.0000      0.0000                         
          JAN 18       0.2506      0.0000      0.0000                         
          FEB 18       0.2506      0.7566      0.0000                         
          MAR 18       0.2506      0.0000      0.0000                         
                                                                              
          APR 18       4.9649      4.7142      4.7142                         
          MAY 18       0.2299      0.7358      1.4978                         
          JUN 18       0.2299      0.0000      0.0000                         
          JUL 18       0.2299      0.0000      0.0000                         
          AUG 18       0.2299      0.6940      0.0000                         
          SEP 18       0.2299      0.0000      0.0000                         
          OCT 18       0.2299      0.0000      0.0000                         
          NOV 18       0.2299      0.6940      1.3931                         
          DEC 18       0.2299      0.0000      0.0000                         
          JAN 19       0.2299      0.0000      0.0000                         
          FEB 19       0.2299      0.6940      0.0000                         
          MAR 19       0.2299      0.0000      0.0000                         
                                                                              
          APR 19       0.2299      0.0000      0.0000                         
          MAY 19       0.2299      0.6940      1.3931                         
          JUN 19      14.5156     14.2857     14.2857                         
          JUL 19       0.1671      0.0000      0.0000                         
          AUG 19       0.1671      0.5676      0.0000                         
          SEP 19       0.1671      0.0000      0.0000                         
          OCT 19       0.1671      0.0000      0.0000                         
          NOV 19       0.1671      0.5044      1.0760                         
          DEC 19       0.1671      0.0000      0.0000                         
          JAN 20       0.1671      0.0000      0.0000                         
          FEB 20       0.1671      0.5044      0.0000                         
          MAR 20       0.1671      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 20       0.1671      0.0000      0.0000                         
          MAY 20       0.1671      0.5044      1.0125                         
          JUN 20       0.1671      0.0000      0.0000                         
          JUL 20       0.1671      0.0000      0.0000                         
          AUG 20       0.1671      0.5044      0.0000                         
          SEP 20       0.1671      0.0000      0.0000                         
          OCT 20       0.1671      0.0000      0.0000                         
          NOV 20       0.1671      0.5044      1.0125                         
          DEC 20       0.1671      0.0000      0.0000                         
          JAN 21       0.1671      0.0000      0.0000                         
          FEB 21       0.1671      0.5044      0.0000                         
          MAR 21       0.1671      0.0000      0.0000                         
                                                                              
          APR 21       0.1671      0.0000      0.0000                         
          MAY 21       0.1671      0.5044      1.0125                         
          JUN 21       0.1671      0.0000      0.0000                         
          JUL 21      14.4528     14.2857     14.2857                         
          AUG 21       0.1019      0.4388      0.0000                         
          SEP 21       0.1019      0.0000      0.0000                         
          OCT 21       0.1019      0.0000      0.0000                         
          NOV 21       0.1019      0.3077      0.7493                         
          DEC 21       0.1019      0.0000      0.0000                         
          JAN 22       0.1019      0.0000      0.0000                         
          FEB 22       0.1019      0.3077      0.0000                         
          MAR 22       0.1019      0.0000      0.0000                         
                                                                              
          APR 22       0.1019      0.0000      0.0000                         
          MAY 22       0.1019      0.3077      0.6177                         
          JUN 22       0.1019      0.0000      0.0000                         
          JUL 22       0.1019      0.0000      0.0000                         
          AUG 22       0.1019      0.3077      0.0000                         
          SEP 22       0.1019      0.0000      0.0000                         
          OCT 22       0.1019      0.0000      0.0000                         
          NOV 22       0.1019      0.3077      0.6177                         
          DEC 22       0.1019      0.0000      0.0000                         
          JAN 23       0.1019      0.0000      0.0000                         
          FEB 23       0.1019      0.3077      0.0000                         
          MAR 23       0.1019      0.0000      0.0000                         
                                                                              
          APR 23       9.6733      9.5714      9.5714                         
          MAY 23       0.0598      0.2653      0.5752                         
          JUN 23       0.0598      0.0000      0.0000                         
          JUL 23       0.0598      0.0000      0.0000                         
          AUG 23      14.3156     14.4945     14.5444                         
                                                                              
</TABLE>                                                                      
                                                                              
                                                                              
                                                                              
<PAGE>                                                                        
                                                                              
                                                                              
<TABLE>                                                                       
                                                                              
Ohio Insured Trust 113                                                        
                                                                              
<CAPTION>   MONTHLY   QUARTERLY  SEMI-ANNUALLY                                
          ------------------------------------                                
<S>         <C>         <C>         <C>                                       
IRR:         5.627       5.618       5.599                                    
CUR RET:     5.561       5.593       5.612                                    
L/T RET:     5.649       5.687       5.706                                    
                                                                              
</TABLE>                                                                      
                                                                              
<TABLE>                                                                       
           ESTIMATED PRINCIPAL AND INTEREST                                   
                DISTRIBUTIONS PER UNIT                                        
          ------------------------------------                                
<CAPTION> MON/YR      MONTHLY   QUARTERLY  SEMI-ANNUALLY                      
- ----------------------------------------------                                
          <S>       <C>         <C>         <C>                               
          APR 94     -98.680     -98.680     -98.680                          
                                                                              
          MAY 94       0.2740      0.0913      0.0456                         
          JUN 94       0.4567      0.0000      0.0000                         
          JUL 94       0.4567      0.0000      0.0000                         
          AUG 94       0.4567      1.3782      0.0000                         
          SEP 94       0.4567      0.0000      0.0000                         
          OCT 94       0.4567      0.0000      0.0000                         
          NOV 94       0.4567      1.3782      2.7660                         
          DEC 94       0.4567      0.0000      0.0000                         
          JAN 95       0.4567      0.0000      0.0000                         
          FEB 95       0.4567      1.3782      0.0000                         
          MAR 95       0.4567      0.0000      0.0000                         
                                                                              
          APR 95       0.4567      0.0000      0.0000                         
          MAY 95       0.4567      1.3782      2.7660                         
          JUN 95       0.4567      0.0000      0.0000                         
          JUL 95       0.4567      0.0000      0.0000                         
          AUG 95       0.4567      1.3782      0.0000                         
          SEP 95       0.4567      0.0000      0.0000                         
          OCT 95       0.4567      0.0000      0.0000                         
          NOV 95       0.4567      1.3782      2.7660                         
          DEC 95       0.4567      0.0000      0.0000                         
          JAN 96       0.4567      0.0000      0.0000                         
          FEB 96       0.4567      1.3782      0.0000                         
          MAR 96       0.4567      0.0000      0.0000                         
                                                                              
          APR 96       0.4567      0.0000      0.0000                         
          MAY 96       0.4567      1.3782      2.7660                         
          JUN 96       0.4567      0.0000      0.0000                         
          JUL 96       0.4567      0.0000      0.0000                         
          AUG 96       0.4567      1.3782      0.0000                         
          SEP 96       0.4567      0.0000      0.0000                         
          OCT 96       0.4567      0.0000      0.0000                         
          NOV 96       0.4567      1.3782      2.7660                         
          DEC 96       0.4567      0.0000      0.0000                         
          JAN 97       0.4567      0.0000      0.0000                         
          FEB 97       0.4567      1.3782      0.0000                         
          MAR 97       0.4567      0.0000      0.0000                         
                                                                              
          APR 97       0.4567      0.0000      0.0000                         
          MAY 97       0.4567      1.3782      2.7660                         
          JUN 97       0.4567      0.0000      0.0000                         
          JUL 97       0.4567      0.0000      0.0000                         
          AUG 97       0.4567      1.3782      0.0000                         
          SEP 97       0.4567      0.0000      0.0000                         
          OCT 97       0.4567      0.0000      0.0000                         
          NOV 97       0.4567      1.3782      2.7660                         
          DEC 97       0.4567      0.0000      0.0000                         
          JAN 98       0.4567      0.0000      0.0000                         
          FEB 98       0.4567      1.3782      0.0000                         
          MAR 98       0.4567      0.0000      0.0000                         
                                                                              
          APR 98       0.4567      0.0000      0.0000                         
          MAY 98       0.4567      1.3782      2.7660                         
          JUN 98       0.4567      0.0000      0.0000                         
          JUL 98       0.4567      0.0000      0.0000                         
          AUG 98       0.4567      1.3782      0.0000                         
          SEP 98       0.4567      0.0000      0.0000                         
          OCT 98       0.4567      0.0000      0.0000                         
          NOV 98       0.4567      1.3782      2.7660                         
          DEC 98       0.4567      0.0000      0.0000                         
          JAN 99       0.4567      0.0000      0.0000                         
          FEB 99       0.4567      1.3782      0.0000                         
          MAR 99       0.4567      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 99       0.4567      0.0000      0.0000                         
          MAY 99       0.4567      1.3782      2.7660                         
          JUN 99       0.4567      0.0000      0.0000                         
          JUL 99       0.4567      0.0000      0.0000                         
          AUG 99       0.4567      1.3782      0.0000                         
          SEP 99       0.4567      0.0000      0.0000                         
          OCT 99       0.4567      0.0000      0.0000                         
          NOV 99       0.4567      1.3782      2.7660                         
          DEC 99       0.4567      0.0000      0.0000                         
          JAN 00       0.4567      0.0000      0.0000                         
          FEB 00       0.4567      1.3782      0.0000                         
          MAR 00       0.4567      0.0000      0.0000                         
                                                                              
          APR 00       0.4567      0.0000      0.0000                         
          MAY 00       0.4567      1.3782      2.7660                         
          JUN 00       0.4567      0.0000      0.0000                         
          JUL 00       0.4567      0.0000      0.0000                         
          AUG 00       0.4567      1.3782      0.0000                         
          SEP 00       0.4567      0.0000      0.0000                         
          OCT 00       0.4567      0.0000      0.0000                         
          NOV 00       0.4567      1.3782      2.7660                         
          DEC 00       0.4567      0.0000      0.0000                         
          JAN 01       0.4567      0.0000      0.0000                         
          FEB 01       0.4567      1.3782      0.0000                         
          MAR 01       0.4567      0.0000      0.0000                         
                                                                              
          APR 01       0.4567      0.0000      0.0000                         
          MAY 01       0.4567      1.3782      2.7660                         
          JUN 01       0.4567      0.0000      0.0000                         
          JUL 01       0.4567      0.0000      0.0000                         
          AUG 01       0.4567      1.3782      0.0000                         
          SEP 01       0.4567      0.0000      0.0000                         
          OCT 01       0.4567      0.0000      0.0000                         
          NOV 01       0.4567      1.3782      2.7660                         
          DEC 01       0.4567      0.0000      0.0000                         
          JAN 02       0.4567      0.0000      0.0000                         
          FEB 02       0.4567      1.3782      0.0000                         
          MAR 02       0.4567      0.0000      0.0000                         
                                                                              
          APR 02       0.4567      0.0000      0.0000                         
          MAY 02       0.4567      1.3782      2.7660                         
          JUN 02       0.4567      0.0000      0.0000                         
          JUL 02       0.4567      0.0000      0.0000                         
          AUG 02       0.4567      1.3782      0.0000                         
          SEP 02       0.4567      0.0000      0.0000                         
          OCT 02       0.4567      0.0000      0.0000                         
          NOV 02       0.4567      1.3782      2.7660                         
          DEC 02       0.4567      0.0000      0.0000                         
          JAN 03       0.4567      0.0000      0.0000                         
          FEB 03       0.4567      1.3782      0.0000                         
          MAR 03       0.4567      0.0000      0.0000                         
                                                                              
          APR 03       0.4567      0.0000      0.0000                         
          MAY 03       0.4567      1.3782      2.7660                         
          JUN 03       0.4567      0.0000      0.0000                         
          JUL 03       0.4567      0.0000      0.0000                         
          AUG 03       0.4567      1.3782      0.0000                         
          SEP 03       0.4567      0.0000      0.0000                         
          OCT 03       0.4567      0.0000      0.0000                         
          NOV 03       0.4567      1.3782      2.7660                         
          DEC 03       0.4567      0.0000      0.0000                         
          JAN 04       0.4567      0.0000      0.0000                         
          FEB 04       0.4567      1.3782      0.0000                         
          MAR 04       0.4567      0.0000      0.0000                         
                                                                              
          APR 04       0.4567      0.0000      0.0000                         
          MAY 04       0.4567      1.3782      2.7660                         
          JUN 04       0.4567      0.0000      0.0000                         
          JUL 04      14.7424     14.2857     14.2857                         
          AUG 04       0.3849      1.3060      0.0000                         
          SEP 04       0.3849      0.0000      0.0000                         
          OCT 04       0.3849      0.0000      0.0000                         
          NOV 04       0.3849      1.1615      2.4762                         
          DEC 04       0.3849      0.0000      0.0000                         
          JAN 05       0.3849      0.0000      0.0000                         
          FEB 05      14.6706     15.4473     14.2857                         
          MAR 05       0.3124      0.0000      0.0000                         
                                                                              
          APR 05       0.3124      0.0000      0.0000                         
          MAY 05       0.3124      0.9431      2.1122                         
          JUN 05       0.3124      0.0000      0.0000                         
          JUL 05       0.3124      0.0000      0.0000                         
          AUG 05       0.3124      0.9431      0.0000                         
          SEP 05       0.3124      0.0000      0.0000                         
          OCT 05       0.3124      0.0000      0.0000                         
          NOV 05       0.3124      0.9431      1.8930                         
          DEC 05       0.3124      0.0000      0.0000                         
          JAN 06       0.3124      0.0000      0.0000                         
          FEB 06       0.3124      0.9431      0.0000                         
          MAR 06       0.3124      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 06       0.3124      0.0000      0.0000                         
          MAY 06       0.3124      0.9431      1.8930                         
          JUN 06       0.3124      0.0000      0.0000                         
          JUL 06       0.3124      0.0000      0.0000                         
          AUG 06       0.3124      0.9431      0.0000                         
          SEP 06       0.3124      0.0000      0.0000                         
          OCT 06       0.3124      0.0000      0.0000                         
          NOV 06       0.3124      0.9431      1.8930                         
          DEC 06       0.3124      0.0000      0.0000                         
          JAN 07       0.3124      0.0000      0.0000                         
          FEB 07       0.3124      0.9431      0.0000                         
          MAR 07       0.3124      0.0000      0.0000                         
                                                                              
          APR 07       0.3124      0.0000      0.0000                         
          MAY 07       0.3124      0.9431      1.8930                         
          JUN 07       0.3124      0.0000      0.0000                         
          JUL 07       0.3124      0.0000      0.0000                         
          AUG 07       0.3124      0.9431      0.0000                         
          SEP 07       0.3124      0.0000      0.0000                         
          OCT 07       0.3124      0.0000      0.0000                         
          NOV 07       0.3124      0.9431      1.8930                         
          DEC 07       0.3124      0.0000      0.0000                         
          JAN 08       0.3124      0.0000      0.0000                         
          FEB 08       0.3124      0.9431      0.0000                         
          MAR 08       0.3124      0.0000      0.0000                         
                                                                              
          APR 08       0.3124      0.0000      0.0000                         
          MAY 08       0.3124      0.9431      1.8930                         
          JUN 08       0.3124      0.0000      0.0000                         
          JUL 08       0.3124      0.0000      0.0000                         
          AUG 08       0.3124      0.9431      0.0000                         
          SEP 08       0.3124      0.0000      0.0000                         
          OCT 08       0.3124      0.0000      0.0000                         
          NOV 08       0.3124      0.9431      1.8930                         
          DEC 08       0.3124      0.0000      0.0000                         
          JAN 09       0.3124      0.0000      0.0000                         
          FEB 09       0.3124      0.9431      0.0000                         
          MAR 09       0.3124      0.0000      0.0000                         
                                                                              
          APR 09       0.3124      0.0000      0.0000                         
          MAY 09       0.3124      0.9431      1.8930                         
          JUN 09       0.3124      0.0000      0.0000                         
          JUL 09       0.3124      0.0000      0.0000                         
          AUG 09       0.3124      0.9431      0.0000                         
          SEP 09       0.3124      0.0000      0.0000                         
          OCT 09       0.3124      0.0000      0.0000                         
          NOV 09       0.3124      0.9431      1.8930                         
          DEC 09       0.3124      0.0000      0.0000                         
          JAN 10       0.3124      0.0000      0.0000                         
          FEB 10       0.3124      0.9431      0.0000                         
          MAR 10       0.3124      0.0000      0.0000                         
                                                                              
          APR 10       0.3124      0.0000      0.0000                         
          MAY 10       0.3124      0.9431      1.8930                         
          JUN 10       0.3124      0.0000      0.0000                         
          JUL 10       0.3124      0.0000      0.0000                         
          AUG 10       0.3124      0.9431      0.0000                         
          SEP 10       0.3124      0.0000      0.0000                         
          OCT 10       0.3124      0.0000      0.0000                         
          NOV 10       0.3124      0.9431      1.8930                         
          DEC 10       0.3124      0.0000      0.0000                         
          JAN 11       0.3124      0.0000      0.0000                         
          FEB 11       0.3124      0.9431      0.0000                         
          MAR 11       0.3124      0.0000      0.0000                         
                                                                              
          APR 11       0.3124      0.0000      0.0000                         
          MAY 11       0.3124      0.9431      1.8930                         
          JUN 11       0.3124      0.0000      0.0000                         
          JUL 11       0.3124      0.0000      0.0000                         
          AUG 11       0.3124      0.9431      0.0000                         
          SEP 11       0.3124      0.0000      0.0000                         
          OCT 11       0.3124      0.0000      0.0000                         
          NOV 11       0.3124      0.9431      1.8930                         
          DEC 11       0.3124      0.0000      0.0000                         
          JAN 12       0.3124      0.0000      0.0000                         
          FEB 12       0.3124      0.9431      0.0000                         
          MAR 12       0.3124      0.0000      0.0000                         
                                                                              
          APR 12       0.3124      0.0000      0.0000                         
          MAY 12       0.3124      0.9431      1.8930                         
          JUN 12       0.3124      0.0000      0.0000                         
          JUL 12       0.3124      0.0000      0.0000                         
          AUG 12       0.3124      0.9431      0.0000                         
          SEP 12       0.3124      0.0000      0.0000                         
          OCT 12       0.3124      0.0000      0.0000                         
          NOV 12       0.3124      0.9431      1.8930                         
          DEC 12       0.3124      0.0000      0.0000                         
          JAN 13       0.3124      0.0000      0.0000                         
          FEB 13       0.3124      0.9431      0.0000                         
          MAR 13       0.3124      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 13       0.3124      0.0000      0.0000                         
          MAY 13       0.3124      0.9431      1.8930                         
          JUN 13       0.3124      0.0000      0.0000                         
          JUL 13       0.3124      0.0000      0.0000                         
          AUG 13       0.3124      0.9431      0.0000                         
          SEP 13       0.3124      0.0000      0.0000                         
          OCT 13       0.3124      0.0000      0.0000                         
          NOV 13       0.3124      0.9431      1.8930                         
          DEC 13       0.3124      0.0000      0.0000                         
          JAN 14       0.3124      0.0000      0.0000                         
          FEB 14       0.3124      0.9431      0.0000                         
          MAR 14       0.3124      0.0000      0.0000                         
                                                                              
          APR 14       0.3124      0.0000      0.0000                         
          MAY 14       0.3124      0.9431      1.8930                         
          JUN 14       0.3124      0.0000      0.0000                         
          JUL 14       0.3124      0.0000      0.0000                         
          AUG 14       0.3124      0.9431      0.0000                         
          SEP 14       0.3124      0.0000      0.0000                         
          OCT 14       0.3124      0.0000      0.0000                         
          NOV 14       0.3124      0.9431      1.8930                         
          DEC 14       0.3124      0.0000      0.0000                         
          JAN 15       0.3124      0.0000      0.0000                         
          FEB 15       0.3124      0.9431      0.0000                         
          MAR 15       0.3124      0.0000      0.0000                         
                                                                              
          APR 15       0.3124      0.0000      0.0000                         
          MAY 15       0.3124      0.9431      1.8930                         
          JUN 15       0.3124      0.0000      0.0000                         
          JUL 15       0.3124      0.0000      0.0000                         
          AUG 15       0.3124      0.9431      0.0000                         
          SEP 15       0.3124      0.0000      0.0000                         
          OCT 15       0.3124      0.0000      0.0000                         
          NOV 15       0.3124      0.9431      1.8930                         
          DEC 15       0.3124      0.0000      0.0000                         
          JAN 16       0.3124      0.0000      0.0000                         
          FEB 16       0.3124      0.9431      0.0000                         
          MAR 16       0.3124      0.0000      0.0000                         
                                                                              
          APR 16       0.3124      0.0000      0.0000                         
          MAY 16       0.3124      0.9431      1.8930                         
          JUN 16       0.3124      0.0000      0.0000                         
          JUL 16       0.3124      0.0000      0.0000                         
          AUG 16       0.3124      0.9431      0.0000                         
          SEP 16       0.3124      0.0000      0.0000                         
          OCT 16       0.3124      0.0000      0.0000                         
          NOV 16       0.3124      0.9431      1.8930                         
          DEC 16       0.3124      0.0000      0.0000                         
          JAN 17       0.3124      0.0000      0.0000                         
          FEB 17       0.3124      0.9431      0.0000                         
          MAR 17       0.3124      0.0000      0.0000                         
                                                                              
          APR 17       0.3124      0.0000      0.0000                         
          MAY 17       0.3124      0.9431      1.8930                         
          JUN 17       0.3124      0.0000      0.0000                         
          JUL 17       0.3124      0.0000      0.0000                         
          AUG 17      14.5981     15.2288     14.2857                         
          SEP 17       0.2510      0.0000      0.0000                         
          OCT 17       0.2510      0.0000      0.0000                         
          NOV 17       0.2510      0.7577      1.7069                         
          DEC 17       0.2510      0.0000      0.0000                         
          JAN 18       0.2510      0.0000      0.0000                         
          FEB 18       0.2510      0.7577      0.0000                         
          MAR 18       0.2510      0.0000      0.0000                         
                                                                              
          APR 18       0.2510      0.0000      0.0000                         
          MAY 18       0.2510      0.7577      1.5208                         
          JUN 18       0.2510      0.0000      0.0000                         
          JUL 18       0.2510      0.0000      0.0000                         
          AUG 18       0.2510      0.7577      0.0000                         
          SEP 18       0.2510      0.0000      0.0000                         
          OCT 18       0.2510      0.0000      0.0000                         
          NOV 18       0.2510      0.7577      1.5208                         
          DEC 18      28.8224     28.5714     28.5714                         
          JAN 19       0.1192      0.0000      0.0000                         
          FEB 19       0.1192      0.4926      0.0000                         
          MAR 19       0.1192      0.0000      0.0000                         
                                                                              
          APR 19       0.1192      0.0000      0.0000                         
          MAY 19       0.1192      0.3601      0.8559                         
          JUN 19       0.1192      0.0000      0.0000                         
          JUL 19       0.1192      0.0000      0.0000                         
          AUG 19       0.1192      0.3601      0.0000                         
          SEP 19       0.1192      0.0000      0.0000                         
          OCT 19       0.1192      0.0000      0.0000                         
          NOV 19       0.1192      0.3601      0.7229                         
          DEC 19       0.1192      0.0000      0.0000                         
          JAN 20       0.1192      0.0000      0.0000                         
          FEB 20       0.1192      0.3601      0.0000                         
          MAR 20       0.1192      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 20       0.1192      0.0000      0.0000                         
          MAY 20       0.1192      0.3601      0.7229                         
          JUN 20       0.1192      0.0000      0.0000                         
          JUL 20       0.1192      0.0000      0.0000                         
          AUG 20       0.1192      0.3601      0.0000                         
          SEP 20       0.1192      0.0000      0.0000                         
          OCT 20       0.1192      0.0000      0.0000                         
          NOV 20       0.1192      0.3601      0.7229                         
          DEC 20       0.1192      0.0000      0.0000                         
          JAN 21       0.1192      0.0000      0.0000                         
          FEB 21       0.1192      0.3601      0.0000                         
          MAR 21       0.1192      0.0000      0.0000                         
                                                                              
          APR 21       0.1192      0.0000      0.0000                         
          MAY 21       0.1192      0.3601      0.7229                         
          JUN 21       0.1192      0.0000      0.0000                         
          JUL 21       0.1192      0.0000      0.0000                         
          AUG 21       0.1192      0.3601      0.0000                         
          SEP 21       0.1192      0.0000      0.0000                         
          OCT 21       0.1192      0.0000      0.0000                         
          NOV 21       0.1192      0.3601      0.7229                         
          DEC 21       0.1192      0.0000      0.0000                         
          JAN 22       0.1192      0.0000      0.0000                         
          FEB 22       0.1192      0.3601      0.0000                         
          MAR 22       0.1192      0.0000      0.0000                         
                                                                              
          APR 22       0.1192      0.0000      0.0000                         
          MAY 22       0.1192      0.3601      0.7229                         
          JUN 22       0.1192      0.0000      0.0000                         
          JUL 22       0.1192      0.0000      0.0000                         
          AUG 22       0.1192      0.3601      0.0000                         
          SEP 22       0.1192      0.0000      0.0000                         
          OCT 22       0.1192      0.0000      0.0000                         
          NOV 22      14.4049     14.6458     15.0086                         
          DEC 22       0.0623      0.0000      0.0000                         
          JAN 23       0.0623      0.0000      0.0000                         
          FEB 23       0.0623      0.1880      0.0000                         
          MAR 23       0.0623      0.0000      0.0000                         
                                                                              
          APR 23       0.0623      0.0000      0.0000                         
          MAY 23       0.0623      0.1880      0.3775                         
          JUN 23       0.0623      0.0000      0.0000                         
          JUL 23       0.0623      0.0000      0.0000                         
          AUG 23       0.0623      0.1880      0.0000                         
          SEP 23       0.0623      0.0000      0.0000                         
          OCT 23       0.0623      0.0000      0.0000                         
          NOV 23       0.0623      0.1880      0.3775                         
          DEC 23       0.0623      0.0000      0.0000                         
          JAN 24      14.3480     14.4111     14.4115                         
                                                                              
</TABLE>                                                                      
                                                                              
                                                                              
                                                                              
<PAGE>                                                                        
                                                                              
                                                                              
<TABLE>                                                                       
                                                                              
Pennsylvania Insured Trust 178                                                
                                                                              
<CAPTION>   MONTHLY   QUARTERLY  SEMI-ANNUALLY                                
          ------------------------------------                                
<S>         <C>         <C>         <C>                                       
IRR:         5.669       5.660       5.639                                    
CUR RET:     5.606       5.638       5.657                                    
L/T RET:     5.687       5.716       5.735                                    
                                                                              
</TABLE>                                                                      
                                                                              
<TABLE>                                                                       
           ESTIMATED PRINCIPAL AND INTEREST                                   
                DISTRIBUTIONS PER UNIT                                        
          ------------------------------------                                
<CAPTION> MON/YR      MONTHLY   QUARTERLY  SEMI-ANNUALLY                      
- ----------------------------------------------                                
          <S>       <C>         <C>         <C>                               
          APR 94    -100.820    -100.820    -100.820                          
                                                                              
          MAY 94       0.2822      0.0940      0.0470                         
          JUN 94       0.4704      0.0000      0.0000                         
          JUL 94       0.4704      0.0000      0.0000                         
          AUG 94       0.4704      1.4194      0.0000                         
          SEP 94       0.4704      0.0000      0.0000                         
          OCT 94       0.4704      0.0000      0.0000                         
          NOV 94       0.4704      1.4194      2.8483                         
          DEC 94       0.4704      0.0000      0.0000                         
          JAN 95       0.4704      0.0000      0.0000                         
          FEB 95       0.4704      1.4194      0.0000                         
          MAR 95       0.4704      0.0000      0.0000                         
                                                                              
          APR 95       0.4704      0.0000      0.0000                         
          MAY 95       0.4704      1.4194      2.8483                         
          JUN 95       0.4704      0.0000      0.0000                         
          JUL 95       0.4704      0.0000      0.0000                         
          AUG 95       0.4704      1.4194      0.0000                         
          SEP 95       0.4704      0.0000      0.0000                         
          OCT 95       0.4704      0.0000      0.0000                         
          NOV 95       0.4704      1.4194      2.8483                         
          DEC 95       0.4704      0.0000      0.0000                         
          JAN 96       0.4704      0.0000      0.0000                         
          FEB 96       0.4704      1.4194      0.0000                         
          MAR 96       0.4704      0.0000      0.0000                         
                                                                              
          APR 96       0.4704      0.0000      0.0000                         
          MAY 96       0.4704      1.4194      2.8483                         
          JUN 96       0.4704      0.0000      0.0000                         
          JUL 96       0.4704      0.0000      0.0000                         
          AUG 96       0.4704      1.4194      0.0000                         
          SEP 96       0.4704      0.0000      0.0000                         
          OCT 96       0.4704      0.0000      0.0000                         
          NOV 96       0.4704      1.4194      2.8483                         
          DEC 96       0.4704      0.0000      0.0000                         
          JAN 97       0.4704      0.0000      0.0000                         
          FEB 97       0.4704      1.4194      0.0000                         
          MAR 97       0.4704      0.0000      0.0000                         
                                                                              
          APR 97       0.4704      0.0000      0.0000                         
          MAY 97       0.4704      1.4194      2.8483                         
          JUN 97       0.4704      0.0000      0.0000                         
          JUL 97       0.4704      0.0000      0.0000                         
          AUG 97       0.4704      1.4194      0.0000                         
          SEP 97       0.4704      0.0000      0.0000                         
          OCT 97       0.4704      0.0000      0.0000                         
          NOV 97       0.4704      1.4194      2.8483                         
          DEC 97       0.4704      0.0000      0.0000                         
          JAN 98       0.4704      0.0000      0.0000                         
          FEB 98       0.4704      1.4194      0.0000                         
          MAR 98       0.4704      0.0000      0.0000                         
                                                                              
          APR 98       0.4704      0.0000      0.0000                         
          MAY 98       0.4704      1.4194      2.8483                         
          JUN 98       0.4704      0.0000      0.0000                         
          JUL 98       0.4704      0.0000      0.0000                         
          AUG 98       0.4704      1.4194      0.0000                         
          SEP 98       0.4704      0.0000      0.0000                         
          OCT 98       0.4704      0.0000      0.0000                         
          NOV 98       0.4704      1.4194      2.8483                         
          DEC 98       0.4704      0.0000      0.0000                         
          JAN 99       0.4704      0.0000      0.0000                         
          FEB 99       0.4704      1.4194      0.0000                         
          MAR 99       0.4704      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 99       0.4704      0.0000      0.0000                         
          MAY 99       0.4704      1.4194      2.8483                         
          JUN 99       0.4704      0.0000      0.0000                         
          JUL 99       0.4704      0.0000      0.0000                         
          AUG 99       0.4704      1.4194      0.0000                         
          SEP 99       0.4704      0.0000      0.0000                         
          OCT 99       0.4704      0.0000      0.0000                         
          NOV 99       0.4704      1.4194      2.8483                         
          DEC 99       0.4704      0.0000      0.0000                         
          JAN 00       0.4704      0.0000      0.0000                         
          FEB 00       0.4704      1.4194      0.0000                         
          MAR 00       0.4704      0.0000      0.0000                         
                                                                              
          APR 00       0.4704      0.0000      0.0000                         
          MAY 00       0.4704      1.4194      2.8483                         
          JUN 00       0.4704      0.0000      0.0000                         
          JUL 00       0.4704      0.0000      0.0000                         
          AUG 00       0.4704      1.4194      0.0000                         
          SEP 00       0.4704      0.0000      0.0000                         
          OCT 00       0.4704      0.0000      0.0000                         
          NOV 00       0.4704      1.4194      2.8483                         
          DEC 00       0.4704      0.0000      0.0000                         
          JAN 01       0.4704      0.0000      0.0000                         
          FEB 01       0.4704      1.4194      0.0000                         
          MAR 01       0.4704      0.0000      0.0000                         
                                                                              
          APR 01       0.4704      0.0000      0.0000                         
          MAY 01       0.4704      1.4194      2.8483                         
          JUN 01       0.4704      0.0000      0.0000                         
          JUL 01       0.4704      0.0000      0.0000                         
          AUG 01       0.4704      1.4194      0.0000                         
          SEP 01       0.4704      0.0000      0.0000                         
          OCT 01       0.4704      0.0000      0.0000                         
          NOV 01       0.4704      1.4194      2.8483                         
          DEC 01       0.4704      0.0000      0.0000                         
          JAN 02       0.4704      0.0000      0.0000                         
          FEB 02       0.4704      1.4194      0.0000                         
          MAR 02       0.4704      0.0000      0.0000                         
                                                                              
          APR 02       0.4704      0.0000      0.0000                         
          MAY 02       0.4704      1.4194      2.8483                         
          JUN 02      14.7561     14.2857     14.2857                         
          JUL 02       0.3987      0.0000      0.0000                         
          AUG 02       0.3987      1.2751      0.0000                         
          SEP 02       0.3987      0.0000      0.0000                         
          OCT 02       0.3987      0.0000      0.0000                         
          NOV 02       0.3987      1.2030      2.4865                         
          DEC 02       0.3987      0.0000      0.0000                         
          JAN 03       0.3987      0.0000      0.0000                         
          FEB 03       0.3987      1.2030      0.0000                         
          MAR 03       0.3987      0.0000      0.0000                         
                                                                              
          APR 03       0.3987      0.0000      0.0000                         
          MAY 03       0.3987      1.2030      2.4141                         
          JUN 03       0.3987      0.0000      0.0000                         
          JUL 03       0.3987      0.0000      0.0000                         
          AUG 03       0.3987      1.2030      0.0000                         
          SEP 03       0.3987      0.0000      0.0000                         
          OCT 03       0.3987      0.0000      0.0000                         
          NOV 03       0.3987      1.2030      2.4141                         
          DEC 03       0.3987      0.0000      0.0000                         
          JAN 04       0.3987      0.0000      0.0000                         
          FEB 04       0.3987      1.2030      0.0000                         
          MAR 04       0.3987      0.0000      0.0000                         
                                                                              
          APR 04       0.3987      0.0000      0.0000                         
          MAY 04       0.3987      1.2030      2.4141                         
          JUN 04       0.3987      0.0000      0.0000                         
          JUL 04       0.3987      0.0000      0.0000                         
          AUG 04       0.3987      1.2030      0.0000                         
          SEP 04       0.3987      0.0000      0.0000                         
          OCT 04       0.3987      0.0000      0.0000                         
          NOV 04       0.3987      1.2030      2.4141                         
          DEC 04       0.3987      0.0000      0.0000                         
          JAN 05       0.3987      0.0000      0.0000                         
          FEB 05       0.3987      1.2030      0.0000                         
          MAR 05       0.3987      0.0000      0.0000                         
                                                                              
          APR 05       0.3987      0.0000      0.0000                         
          MAY 05       0.3987      1.2030      2.4141                         
          JUN 05       0.3987      0.0000      0.0000                         
          JUL 05       0.3987      0.0000      0.0000                         
          AUG 05       0.3987      1.2030      0.0000                         
          SEP 05       0.3987      0.0000      0.0000                         
          OCT 05       0.3987      0.0000      0.0000                         
          NOV 05       0.3987      1.2030      2.4141                         
          DEC 05       0.3987      0.0000      0.0000                         
          JAN 06       0.3987      0.0000      0.0000                         
          FEB 06       0.3987      1.2030      0.0000                         
          MAR 06       0.3987      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 06       0.3987      0.0000      0.0000                         
          MAY 06       0.3987      1.2030      2.4141                         
          JUN 06       0.3987      0.0000      0.0000                         
          JUL 06       0.3987      0.0000      0.0000                         
          AUG 06       0.3987      1.2030      0.0000                         
          SEP 06       0.3987      0.0000      0.0000                         
          OCT 06       0.3987      0.0000      0.0000                         
          NOV 06       0.3987      1.2030      2.4141                         
          DEC 06       0.3987      0.0000      0.0000                         
          JAN 07       0.3987      0.0000      0.0000                         
          FEB 07       0.3987      1.2030      0.0000                         
          MAR 07       0.3987      0.0000      0.0000                         
                                                                              
          APR 07       0.3987      0.0000      0.0000                         
          MAY 07       0.3987      1.2030      2.4141                         
          JUN 07       0.3987      0.0000      0.0000                         
          JUL 07       0.3987      0.0000      0.0000                         
          AUG 07       0.3987      1.2030      0.0000                         
          SEP 07       0.3987      0.0000      0.0000                         
          OCT 07       0.3987      0.0000      0.0000                         
          NOV 07       0.3987      1.2030      2.4141                         
          DEC 07       0.3987      0.0000      0.0000                         
          JAN 08       0.3987      0.0000      0.0000                         
          FEB 08       0.3987      1.2030      0.0000                         
          MAR 08       0.3987      0.0000      0.0000                         
                                                                              
          APR 08       0.3987      0.0000      0.0000                         
          MAY 08       0.3987      1.2030      2.4141                         
          JUN 08       0.3987      0.0000      0.0000                         
          JUL 08       0.3987      0.0000      0.0000                         
          AUG 08       0.3987      1.2030      0.0000                         
          SEP 08       0.3987      0.0000      0.0000                         
          OCT 08       0.3987      0.0000      0.0000                         
          NOV 08       0.3987      1.2030      2.4141                         
          DEC 08       0.3987      0.0000      0.0000                         
          JAN 09       0.3987      0.0000      0.0000                         
          FEB 09       0.3987      1.2030      0.0000                         
          MAR 09       0.3987      0.0000      0.0000                         
                                                                              
          APR 09       0.3987      0.0000      0.0000                         
          MAY 09       0.3987      1.2030      2.4141                         
          JUN 09       0.3987      0.0000      0.0000                         
          JUL 09       0.3987      0.0000      0.0000                         
          AUG 09       0.3987      1.2030      0.0000                         
          SEP 09       0.3987      0.0000      0.0000                         
          OCT 09       0.3987      0.0000      0.0000                         
          NOV 09       0.3987      1.2030      2.4141                         
          DEC 09       0.3987      0.0000      0.0000                         
          JAN 10       0.3987      0.0000      0.0000                         
          FEB 10       0.3987      1.2030      0.0000                         
          MAR 10       0.3987      0.0000      0.0000                         
                                                                              
          APR 10       0.3987      0.0000      0.0000                         
          MAY 10       0.3987      1.2030      2.4141                         
          JUN 10       0.3987      0.0000      0.0000                         
          JUL 10       0.3987      0.0000      0.0000                         
          AUG 10       0.3987      1.2030      0.0000                         
          SEP 10       0.3987      0.0000      0.0000                         
          OCT 10       0.3987      0.0000      0.0000                         
          NOV 10       0.3987      1.2030      2.4141                         
          DEC 10       0.3987      0.0000      0.0000                         
          JAN 11       0.3987      0.0000      0.0000                         
          FEB 11       0.3987      1.2030      0.0000                         
          MAR 11       0.3987      0.0000      0.0000                         
                                                                              
          APR 11       0.3987      0.0000      0.0000                         
          MAY 11       0.3987      1.2030      2.4141                         
          JUN 11       0.3987      0.0000      0.0000                         
          JUL 11       0.3987      0.0000      0.0000                         
          AUG 11       0.3987      1.2030      0.0000                         
          SEP 11       0.3987      0.0000      0.0000                         
          OCT 11       0.3987      0.0000      0.0000                         
          NOV 11       0.3987      1.2030      2.4141                         
          DEC 11       0.3987      0.0000      0.0000                         
          JAN 12       0.3987      0.0000      0.0000                         
          FEB 12       0.3987      1.2030      0.0000                         
          MAR 12       0.3987      0.0000      0.0000                         
                                                                              
          APR 12       0.3987      0.0000      0.0000                         
          MAY 12       0.3987      1.2030      2.4141                         
          JUN 12       0.3987      0.0000      0.0000                         
          JUL 12       0.3987      0.0000      0.0000                         
          AUG 12      14.6844     15.4887     14.2857                         
          SEP 12       0.3299      0.0000      0.0000                         
          OCT 12       0.3299      0.0000      0.0000                         
          NOV 12       0.3299      0.9955      2.2059                         
          DEC 12       0.3299      0.0000      0.0000                         
          JAN 13       0.3299      0.0000      0.0000                         
          FEB 13       0.3299      0.9955      0.0000                         
          MAR 13       0.3299      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 13       0.3299      0.0000      0.0000                         
          MAY 13       0.3299      0.9955      1.9978                         
          JUN 13       0.3299      0.0000      0.0000                         
          JUL 13       0.3299      0.0000      0.0000                         
          AUG 13       0.3299      0.9955      0.0000                         
          SEP 13       0.3299      0.0000      0.0000                         
          OCT 13       0.3299      0.0000      0.0000                         
          NOV 13       0.3299      0.9955      1.9978                         
          DEC 13       0.3299      0.0000      0.0000                         
          JAN 14       0.3299      0.0000      0.0000                         
          FEB 14       0.3299      0.9955      0.0000                         
          MAR 14       0.3299      0.0000      0.0000                         
                                                                              
          APR 14       0.3299      0.0000      0.0000                         
          MAY 14       0.3299      0.9955      1.9978                         
          JUN 14       0.3299      0.0000      0.0000                         
          JUL 14       0.3299      0.0000      0.0000                         
          AUG 14       0.3299      0.9955      0.0000                         
          SEP 14       0.3299      0.0000      0.0000                         
          OCT 14       0.3299      0.0000      0.0000                         
          NOV 14       0.3299      0.9955      1.9978                         
          DEC 14       0.3299      0.0000      0.0000                         
          JAN 15       0.3299      0.0000      0.0000                         
          FEB 15       0.3299      0.9955      0.0000                         
          MAR 15       0.3299      0.0000      0.0000                         
                                                                              
          APR 15       0.3299      0.0000      0.0000                         
          MAY 15       0.3299      0.9955      1.9978                         
          JUN 15       0.3299      0.0000      0.0000                         
          JUL 15       0.3299      0.0000      0.0000                         
          AUG 15       0.3299      0.9955      0.0000                         
          SEP 15       0.3299      0.0000      0.0000                         
          OCT 15       0.3299      0.0000      0.0000                         
          NOV 15       0.3299      0.9955      1.9978                         
          DEC 15       0.3299      0.0000      0.0000                         
          JAN 16       0.3299      0.0000      0.0000                         
          FEB 16       0.3299      0.9955      0.0000                         
          MAR 16       0.3299      0.0000      0.0000                         
                                                                              
          APR 16       0.3299      0.0000      0.0000                         
          MAY 16       0.3299      0.9955      1.9978                         
          JUN 16       0.3299      0.0000      0.0000                         
          JUL 16       0.3299      0.0000      0.0000                         
          AUG 16       0.3299      0.9955      0.0000                         
          SEP 16       0.3299      0.0000      0.0000                         
          OCT 16       0.3299      0.0000      0.0000                         
          NOV 16       0.3299      0.9955      1.9978                         
          DEC 16       0.3299      0.0000      0.0000                         
          JAN 17       0.3299      0.0000      0.0000                         
          FEB 17       0.3299      0.9955      0.0000                         
          MAR 17       0.3299      0.0000      0.0000                         
                                                                              
          APR 17       0.3299      0.0000      0.0000                         
          MAY 17       0.3299      0.9955      1.9978                         
          JUN 17       0.3299      0.0000      0.0000                         
          JUL 17       0.3299      0.0000      0.0000                         
          AUG 17       0.3299      0.9955      0.0000                         
          SEP 17      14.6156     14.2857     14.2857                         
          OCT 17       0.2596      0.0000      0.0000                         
          NOV 17       0.2596      0.8542      1.8560                         
          DEC 17       0.2596      0.0000      0.0000                         
          JAN 18      14.5453     14.2857     14.2857                         
          FEB 18       0.1968      0.7203      0.0000                         
          MAR 18       0.1968      0.0000      0.0000                         
                                                                              
          APR 18       0.1968      0.0000      0.0000                         
          MAY 18      14.4825     14.8796     15.6045                         
          JUN 18       0.1345      0.0000      0.0000                         
          JUL 18       0.1345      0.0000      0.0000                         
          AUG 18       0.1345      0.4060      0.0000                         
          SEP 18       0.1345      0.0000      0.0000                         
          OCT 18       0.1345      0.0000      0.0000                         
          NOV 18       0.1345      0.4060      0.8148                         
          DEC 18       0.1345      0.0000      0.0000                         
          JAN 19       0.1345      0.0000      0.0000                         
          FEB 19       0.1345      0.4060      0.0000                         
          MAR 19       0.1345      0.0000      0.0000                         
                                                                              
          APR 19       0.1345      0.0000      0.0000                         
          MAY 19       0.1345      0.4060      0.8148                         
          JUN 19       0.1345      0.0000      0.0000                         
          JUL 19       0.1345      0.0000      0.0000                         
          AUG 19       0.1345      0.4060      0.0000                         
          SEP 19       0.1345      0.0000      0.0000                         
          OCT 19       0.1345      0.0000      0.0000                         
          NOV 19       0.1345      0.4060      0.8148                         
          DEC 19       0.1345      0.0000      0.0000                         
          JAN 20       0.1345      0.0000      0.0000                         
          FEB 20       0.1345      0.4060      0.0000                         
          MAR 20       0.1345      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 20       0.1345      0.0000      0.0000                         
          MAY 20       0.1345      0.4060      0.8148                         
          JUN 20       0.1345      0.0000      0.0000                         
          JUL 20       0.1345      0.0000      0.0000                         
          AUG 20       0.1345      0.4060      0.0000                         
          SEP 20       0.1345      0.0000      0.0000                         
          OCT 20       0.1345      0.0000      0.0000                         
          NOV 20       0.1345      0.4060      0.8148                         
          DEC 20       0.1345      0.0000      0.0000                         
          JAN 21       0.1345      0.0000      0.0000                         
          FEB 21       0.1345      0.4060      0.0000                         
          MAR 21       0.1345      0.0000      0.0000                         
                                                                              
          APR 21       0.1345      0.0000      0.0000                         
          MAY 21       0.1345      0.4060      0.8148                         
          JUN 21       0.1345      0.0000      0.0000                         
          JUL 21       0.1345      0.0000      0.0000                         
          AUG 21       0.1345      0.4060      0.0000                         
          SEP 21       0.1345      0.0000      0.0000                         
          OCT 21       0.1345      0.0000      0.0000                         
          NOV 21       0.1345      0.4060      0.8148                         
          DEC 21       0.1345      0.0000      0.0000                         
          JAN 22       0.1345      0.0000      0.0000                         
          FEB 22       0.1345      0.4060      0.0000                         
          MAR 22       0.1345      0.0000      0.0000                         
                                                                              
          APR 22       0.1345      0.0000      0.0000                         
          MAY 22       0.1345      0.4060      0.8148                         
          JUN 22       0.1345      0.0000      0.0000                         
          JUL 22       0.1345      0.0000      0.0000                         
          AUG 22       0.1345      0.4060      0.0000                         
          SEP 22       0.1345      0.0000      0.0000                         
          OCT 22       0.1345      0.0000      0.0000                         
          NOV 22       0.1345      0.4060      0.8148                         
          DEC 22       0.1345      0.0000      0.0000                         
          JAN 23       0.1345      0.0000      0.0000                         
          FEB 23       0.1345      0.4060      0.0000                         
          MAR 23       0.1345      0.0000      0.0000                         
                                                                              
          APR 23       0.1345      0.0000      0.0000                         
          MAY 23       0.1345      0.4060      0.8148                         
          JUN 23       0.1345      0.0000      0.0000                         
          JUL 23       0.1345      0.0000      0.0000                         
          AUG 23       0.1345      0.4060      0.0000                         
          SEP 23       0.1345      0.0000      0.0000                         
          OCT 23       0.1345      0.0000      0.0000                         
          NOV 23      14.4203     14.6917     15.1005                         
          DEC 23       0.0628      0.0000      0.0000                         
          JAN 24       0.0628      0.0000      0.0000                         
          FEB 24       0.0628      0.1896      0.0000                         
          MAR 24       0.0628      0.0000      0.0000                         
                                                                              
          APR 24       0.0628      0.0000      0.0000                         
          MAY 24       0.0628      0.1896      0.3806                         
          JUN 24       0.0628      0.0000      0.0000                         
          JUL 24       0.0628      0.0000      0.0000                         
          AUG 24       0.0628      0.1896      0.0000                         
          SEP 24       0.0628      0.0000      0.0000                         
          OCT 24       0.0628      0.0000      0.0000                         
          NOV 24       0.0628      0.1896      0.3806                         
          DEC 24       0.0628      0.0000      0.0000                         
          JAN 25       0.0628      0.0000      0.0000                         
          FEB 25       0.0628      0.1896      0.0000                         
          MAR 25       0.0628      0.0000      0.0000                         
                                                                              
          APR 25       0.0628      0.0000      0.0000                         
          MAY 25       0.0628      0.1896      0.3806                         
          JUN 25       0.0628      0.0000      0.0000                         
          JUL 25       0.0628      0.0000      0.0000                         
          AUG 25       0.0628      0.1896      0.0000                         
          SEP 25       0.0628      0.0000      0.0000                         
          OCT 25       0.0628      0.0000      0.0000                         
          NOV 25       0.0628      0.1896      0.3806                         
          DEC 25       0.0628      0.0000      0.0000                         
          JAN 26       0.0628      0.0000      0.0000                         
          FEB 26       0.0628      0.1896      0.0000                         
          MAR 26       0.0628      0.0000      0.0000                         
                                                                              
          APR 26       0.0628      0.0000      0.0000                         
          MAY 26       0.0628      0.1896      0.3806                         
          JUN 26       0.0628      0.0000      0.0000                         
          JUL 26       0.0628      0.0000      0.0000                         
          AUG 26       0.0628      0.1896      0.0000                         
          SEP 26       0.0628      0.0000      0.0000                         
          OCT 26       0.0628      0.0000      0.0000                         
          NOV 26       0.0628      0.1896      0.3806                         
          DEC 26       0.0628      0.0000      0.0000                         
          JAN 27       0.0628      0.0000      0.0000                         
          FEB 27      14.3171     14.5048     14.5056                         
                                                                              
</TABLE>                                                                      
                                                                              


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