NUVEEN TAX EXEMPT UNIT TRUST SERIES 808
497, 1995-06-22
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<PAGE>
NUVEEN  Tax-Exempt Unit Trusts
     NUVEEN
     NATIONAL
     INSURED
     TRUST 298
 
            Estimated Current Return
            5.42% to 5.64%
            as of 06/20/95
 
            Estimated Long Term Return
            5.51% to 5.72%
             100,000 units in a
             diversified $10,000,000
             portfolio of tax-exempt
             bonds rated "AAA"
                  Cusip:
                  6710A4 132 Monthly Payment Option
                  6710A4 140 Quarterly Payment Option
                  6710A4 157 Semi-Annual Payment Option
 
                  Registered in all states
                    John Nuveen & Co. Incorporated
                    Investment Bankers
 
<TABLE>
<S>                           <C>
Chicago:                      Atlanta
333 W. Wacker Dr.             Austin
Chicago, Illinois 60606       Boca Raton
Telephone: 312.917.7700       Boston
                              Columbus
New York:                     Dallas/Ft. Worth
Swiss Bank Tower              Irvine
10 East 50th Street           Philadelphia
New York, New York 10022      Phoenix
Telephone: 212.207.2000       San Francisco
                              Seattle
                              Tampa
                              Washington, D.C.
</TABLE>
 
<PAGE>
- --------------------------------------------------------------------------------
 
NUVEEN TAX-EXEMPT UNIT TRUST--INSURED, NATIONAL INSURED TRUST 298
SCHEDULE OF INVESTMENTS
DATE OF DEPOSIT JUNE 21, 1995
- --------------------------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                                                                                                             Ratings
                                                                                    Optional         -----------------------
  Aggregate            Name of Issuer and Title of Issue Represented               Redemption        Standard
  Principal               by Sponsor's Contracts to Purchase Bonds                 Provisions        & Poor's       Moody's
  <C>       <C> <S>                                                              <C>                 <C>           <C>
  --------------------------------------------------------------------------------------------------------------------------
  $1,000,000    The Special Care Facilities Financing Authority of the City        2005 at 102          AAA           Aaa
                  of Birmingham (Alabama), Baptist Medical Centers, Revenue
                  Bonds, Series 1995-B (Baptist Health System, Inc.), 5.875%
                  Due 11/15/15.
     500,000    State Public Works Board of the State of California, Lease         2003 at 102          AAA           Aaa
                  Revenue Bonds (Department of Corrections), 1993 Series B
                  (California State Prison-Fresno County, Coalinga), 5.375%
                  Due 12/1/19. (Original issue discount bonds delivered on
                  or about April 14, 1993 at a price of 94.522% of principal
                  amount.)
     500,000    Contra Costa Water District (Contra Costa County,                  2004 at 102          AAA           Aaa
                  California), Water Revenue Bonds, Series G, 5.75% Due
                  10/1/14.
   1,000,000    City of Fresno, California, Health Facility Revenue Bonds,         2003 at 102          AAA           Aaa
                  Series 1993B (Holy Cross Health System Corporation),
                  5.625% Due 12/1/15.
   1,000,000    Metropolitan Pier and Exposition Authority (Illinois),             2004 at 102          AAA           Aaa
                  McCormick Place Expansion Project Refunding Bonds, Series
                  1994A, 6.00% Due 6/15/27. (Original issue discount bonds
                  delivered on or about June 23, 1994 at a price of 93.881%
                  of principal amount.)
   1,000,000    Public Building Commission of Chicago (Illinois), Building         2003 at 102          AAA           Aaa
                  Revenue Bonds, Series A of 1993 (Board of Education of the
                  City of Chicago), 5.75% Due 12/1/18. (General Obligation
                  Bonds.)
   1,500,000    City of Bloomington, Indiana, Monroe County, Sewage Works          2005 at 102          AAA           Aaa
                  Revenue Bonds of 1995, 5.875% Due 1/1/25.
   1,000,000    The Pollution Control Financing Authority of Salem County          2003 at 102          AAA           Aaa
                  (New Jersey), Pollution Control Revenue Refunding Bonds,
                  1993 Series C (Public Service Electric and Gas Company
                  Project), 5.55% Due 11/1/33.
     250,000    New York Local Government Assistance Corporation (New York),       2005 at 102          AAA           Aaa
                  Series 1995A Bonds, 6.00% Due 4/1/24.
     250,000    Centre County Higher Education Authority (Pennsylvania),           No Optional          AAA           Aaa
                  Project Revenue Bonds, Series 1992A (Centre Medical                 Call
                  Science Building Project), 0.00% Due 4/1/17. (Original
                  issue discount bonds delivered on or about October 22,
                  1992 at a price of 20.211% of principal amount.)
   1,000,000    King County, Washington, Limited Tax Obligation Bonds, 1995,       2005 at 102          AAA           Aaa
                  6.25% Due 1/1/35. (General Obligation Bonds.)
   1,000,000    Washington Public Power Supply System (Bonneville), Nuclear        2003 at 102          AAA           Aaa
                  Project No. 1 Refunding Revenue Bonds, Series 1993C,
                  5.375% Due 7/1/15.
  ----------
  $10,000,000
  ----------
  ----------
</TABLE>
    
 
<PAGE>
- --------------------------------------------------------------------------------
UNIT PRICE, ESTIMATED CURRENT RETURN AND ESTIMATED LONG TERM RETURN DEPEND ON
AMOUNT PURCHASED AND PAYMENT OPTION    The sales charges/volume discounts below
apply on all concurrent purchases of any Nuveen trust units, unless any such
purchases are made by a class of investors for which a separate sales charge is
applicable as described more fully in the Prospectus. Estimated Current Return
equals net income divided by offering price. Estimated Long Term Return
represents an average of the yields to maturity (or call) of the Bonds in the
Trust adjusted to reflect expenses and sales charges.
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                          Estimated Current Return (2)
                                                              -----------------------------------------------------
          AMOUNT PURCHASED                         Public
- -------------------------------------  Sales      Offering          Monthly         Quarterly       Semi-Annual
     Units              Dollars        Charge     Price (1)         Payment          Payment          Payment
- ----------------  -------------------  ------    -----------     -------------    -------------    -------------
<S>               <C>                  <C>       <C>         <C>                <C>              <C>
50-499                 $5,000-$49,999   4.90 %   $    100.09          5.42%            5.45%            5.47%
500-999                 50,000-99,999   4.75           99.94          5.43             5.46             5.48
1,000-2,499           100,000-249,999   4.50           99.68          5.44             5.48             5.50
2,500-4,999           250,000-499,999   4.25           99.42          5.46             5.49             5.51
5,000-9,999           500,000-999,999   3.50           98.64          5.50             5.53             5.55
10,000-24,999     1,000,000- 2,499,999  3.00           98.13          5.53             5.56             5.58
25,000-49,999     2,500,000- 4,999,999  2.50           97.63          5.56             5.59             5.61
50,000 and over    5,000,000 and over   2.00           97.13          5.59             5.62             5.64
</TABLE>
 
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                         Estimated Long Term Return (3)
                                                              -----------------------------------------------------
          AMOUNT PURCHASED                         Public
- -------------------------------------  Sales      Offering          Monthly         Quarterly       Semi-Annual
     Units              Dollars        Charge     Price (1)         Payment          Payment          Payment
- ----------------  -------------------  ------    -----------     -------------    -------------    -------------
<S>               <C>                  <C>       <C>         <C>                <C>              <C>
50-499                 $5,000-$49,999   4.90 %   $    100.09          5.51%            5.54%            5.55%
500-999                 50,000-99,999   4.75           99.94          5.51             5.54             5.56
1,000-2,499           100,000-249,999   4.50           99.68          5.53             5.56             5.58
2,500-4,999           250,000-499,999   4.25           99.42          5.54             5.57             5.59
5,000-9,999           500,000-999,999   3.50           98.64          5.59             5.62             5.64
10,000-24,999     1,000,000- 2,499,999  3.00           98.13          5.62             5.65             5.67
25,000-49,999     2,500,000- 4,999,999  2.50           97.63          5.65             5.68             5.69
50,000 and over    5,000,000 and over   2.00           97.13          5.67             5.70             5.72
</TABLE>
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
(1) As of the business day prior to the Date of Deposit. Units are offered at
    the Public Offering Price plus accrued interest.
(2) All figures as of the business day prior to Date of Deposit. The estimated
    current return for purchases made on such date will be as shown, as long as
    the portfolio size and composition remain the same.
(3) In contrast to Estimated Current Return, Estimated Long Term Return reflects
    the amortization of premium or accretion of discount, if any, on the bonds
    in the Trust's portfolio.
 
- --------------------------------------------------------------------------------
 
REINVESTMENT OPTIONS   Specify automatic reinvestment of trust income, with no
sales charge, to earn compounded dividends with Nuveen mutual funds.
- --------------------------------------------------------------------------------
 
INTEREST DISTRIBUTIONS TO UNITHOLDERS   Unitholders may elect to have interest
distributions made on a monthly, quarterly, or semi-annual basis. Record Dates
are May 1 and November 1 for semi-annual distributions; February 1, May 1,
August 1 and November 1 for quarterly distributions; and the first of each month
for monthly distributions. Details of interest distributions per unit 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
National Insured Trust                            1995                             1996                 per Year +
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        8/1           11/1            2/1            5/1
Distribution Date.....................       8/15          11/15           2/15           5/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .6028(1)                                                  $  5.4276
                                                          --------  $.4521 every month  --------
Quarterly Distribution Plan...........  $   .6028(1)   $  1.3644(2)   $  1.3644      $  1.3644        $  5.4596
Semi-Annual Distribution Plan.........  $   .6028(1)   $  1.3689(3)                  $  2.7378        $  5.4786
- --------------------------------------------------------------------------------------------------------------------
<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) The second distribution under the semi-annual distribution plan represents a 3-month distribution; subsequent semi-annual
    distributions will be regular 6-month distributions.
</TABLE>
    
 
+ Interest for Unitholders of this series began to accrue as of the Date of
Deposit. Units purchased on the Date of Deposit will have $.08 of accrued
interest that will be added to the Public Offering Price on the Settlement Date.
After provision for expenses of the Fund, the daily rate of accrual from the
Date of Deposit to the first Record Date is $.01507 per unit per day.
Consequently, on the first Record Date (08/01/95), accrued interest will total
$0.6028 per unit for the 40-day period. All interest accrued from the Date of
Deposit to the first Record Date, less expenses, will be distributed on the
first Distribution Date to Unitholders of Record as of the first Record Date.
The first payment to all Unitholders of Record on 08/01/95 is $.6028 per unit.
After the first Record Date daily rates of accrual are:
              Monthly - $0.01507              Quarterly - $0.01516
                             Semi-Annual - $0.01521
This daily rate of accrual, and the annual distributions shown above, will
remain the same as long as the portfolio size and composition remain the same.
 
- --------------------------------------------------------------------------------
<PAGE>
- -------------------------------------------------
 
DIVERSIFICATION OF PORTFOLIO INCOME
 
There are 12 Tax-exempt bond issues in this trust; this diversified portfolio
yields current income from issuers in 7 states.
- -------------------------------------------------------
<TABLE>
<CAPTION>
                   Percent
                   of Total
                   Income
<S>                    <C>        <C>
- ------------------------
                                  %
Alabama                     10.4
California                  19.8
Illinois                    20.9
Indiana                     15.7
 
<CAPTION>
                   Percent
                   of Total
                   Income
- ------------------------
<S>                    <C>        <C>
                                  %
New Jersey                   9.9
New York                     2.7
Washington                  20.6
</TABLE>
 
- -------------------------------------------------
 
AVERAGE PORTFOLIO LIFE The average maturity
of portfolio bonds is 27.3 years. The first bond is scheduled to mature in
October, 2014, with the last bond maturity being January, 2035.
 
- -------------------------------------------------
 
BONDS INSURED BY MBIA   Each bond in this Nuveen Insured series has been
insured* by the Municipal Bond Investors Assurance Corporation, which guarantees
timely payments of principal and interest. Premium payments have been fully paid
by the Date of Deposit.
 
- -------------------------------------------------
 
CALL PROTECTION   Bonds are first subject to optional redemption by the issuers
in the years and at the prices shown under the Redemption Provisions column in
the Schedule of Investments. Unless otherwise stated, in subsequent years, bonds
are redeemable at declining prices, but not usually below par value. Some issues
or some portions of issues may also be subject to sinking fund redemption or
extraordinary redemption without premium prior to the dates shown.
 
- -------------------------------------------------
 
UNITS OF THE TRUST ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
BY, ANY BANK AND ARE NOT FEDERALLY INSURED OR OTHERWISE PROTECTED BY THE FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER AGENCY AND
INVOLVE INVESTMENT RISK, INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.
 
- -------------------------------------------------
 
* Insurance relates specifically to the bonds and not to the units or to the
  market value of units. Terms of the insurance are more fully described in the
  prospectus. No representation is made as to the insurer's ability to meet its
  commitments. See Section 5 of the prospectus for details.
 
- -------------------------------------------------------
 
FOR A PROSPECTUS CONTAINING MORE COMPLETE INFORMATION, INCLUDING CHARGES AND
EXPENSES, ON THIS NUVEEN TAX-EXEMPT UNIT TRUST AND ANY OTHER NUVEEN FUND, CALL
YOUR BROKER . . . OR NUVEEN AT
 
                                 1-800-257-8787
 
READ THE PROSPECTUS CAREFULLY BEFORE YOU INVEST OR SEND MONEY.
 
808
<PAGE>
NUVEEN  Tax-Exempt Unit Trusts
     NUVEEN
     SHORT INTERMEDIATE
     INSURED
     TRUST 42
 
            Estimated Current Return
            First
            Year: 4.04% to 4.15%
            Subsequent
            Years: 4.06% to 4.17%
            as of 06/20/95
 
            Estimated Long Term Return
            4.32% to 4.43%
             60,000 units in a
             diversified $6,000,000
             portfolio of tax-exempt
             bonds rated "AAA"
                  Cusip:
                  6710A0 551 Monthly Payment Option
                  6710A0 569 Quarterly Payment Option
                  6710A0 577 Semi-Annual Payment Option
 
                  Registered in all states
                    John Nuveen & Co. Incorporated
                    Investment Bankers
 
<TABLE>
<S>                           <C>
Chicago:                      Atlanta
333 W. Wacker Dr.             Austin
Chicago, Illinois 60606       Boca Raton
Telephone: 312.917.7700       Boston
                              Columbus
New York:                     Dallas/Ft. Worth
Swiss Bank Tower              Irvine
10 East 50th Street           Philadelphia
New York, New York 10022      Phoenix
Telephone: 212.207.2000       San Francisco
                              Seattle
                              Tampa
                              Washington, D.C.
</TABLE>
 
<PAGE>
- --------------------------------------------------------------------------------
 
NUVEEN TAX-EXEMPT UNIT TRUST--INSURED, SHORT INTERMEDIATE INSURED TRUST 42
SCHEDULE OF INVESTMENTS
DATE OF DEPOSIT JUNE 21, 1995
- --------------------------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                                                                                                             Ratings
                                                                                    Optional         -----------------------
  Aggregate            Name of Issuer and Title of Issue Represented               Redemption        Standard
  Principal               by Sponsor's Contracts to Purchase Bonds                 Provisions        & Poor's       Moody's
  <C>       <C> <S>                                                              <C>                 <C>           <C>
  --------------------------------------------------------------------------------------------------------------------------
  $  265,000    Fresno County Financing Authority (California), Solid Waste        No Optional          AAA           Aaa
                  Revenue Bonds, Series 1995 (American Avenue Landfill                Call
                  Project), 4.70% Due 5/15/00. (When issued.)
     900,000    The Illinois State Toll Highway Authority, Toll Highway            No Optional          AAA           Aaa
                  Refunding Revenue Bonds, 1993 Series A, 4.50% Due 1/1/00.           Call
     600,000    State Building Authority, State of Michigan, 1993 Revenue          No Optional          AAA           Aaa
                  Refunding Bonds, Series I, 4.40% Due 10/1/00.                       Call
     485,000    Southern Minnesota Municipal Power Agency, Power Supply            No Optional          AAA           Aaa
                  System Revenue Bonds, Series 1993 A, 4.40% Due 1/1/00.              Call
     520,000    Anderson County, South Carolina, Hospital Revenue Bonds            No Optional          AAA           Aaa
                  (Anderson Area Medical Center, Inc.), Series 1993, 4.40%            Call
                  Due 2/1/00.
     250,000    Lower Colorado River Authority, Texas, Junior Lien Refunding       No Optional          AAA           Aaa
                  Revenue Bonds, Series 1992, 0.00% Due 1/1/00. (Original             Call
                  issue discount bonds delivered on or about March 19, 1992
                  at a price of 62.408% of principal amount.)
     600,000    City of Dallas, Texas (Dallas, Denton And Collin Counties),        No Optional          AAA           Aaa
                  Waterworks and Sewer System Revenue Refunding Bonds,                Call
                  Series 1993, 4.50% Due 4/1/00.
     600,000    City of Sugar Land, Texas (Fort Bend County), Public               No Optional          AAA           Aaa
                  Improvement and Refunding General Obligation Bonds, Series          Call
                  1995, 4.60% Due 3/15/00. (When issued.)
     330,000    Intermountain Power Agency (Utah), Power Supply Revenue            No Optional          AAA           Aaa
                  Refunding Bonds, 1993 Series C, 4.50% Due 7/1/00.                   Call
     500,000    The City of Seattle, Washington, Water System and Refunding        No Optional          AAA           Aaa
                  Revenue Bonds, 1993, 4.70% Due 12/1/00.                             Call
     500,000    Public Utility District No. 1 of Chelan County, Washington,        No Optional          AAA           Aaa
                  Chelan Hydro Consolidated System Revenue Bonds, Refunding           Call
                  Series 1995B, 4.70% Due 7/1/00. (When issued.)
     450,000    Public Utility District No. 1 of Clark County, Washington,         No Optional          AAA           Aaa
                  Electric System Revenue and Refunding Bonds, Series 1993,           Call
                  4.30% Due 1/1/00.
  ----------
  $6,000,000
  ----------
  ----------
</TABLE>
    
 
<PAGE>
- --------------------------------------------------------------------------------
UNIT PRICE, ESTIMATED CURRENT RETURN AND ESTIMATED LONG TERM RETURN DEPEND ON
AMOUNT PURCHASED AND PAYMENT OPTION    The sales charges/volume discounts below
apply on all concurrent purchases of any Nuveen trust units, unless any such
purchases are made by a class of investors for which a separate sales charge is
applicable as described more fully in the Prospectus. Estimated Current Return
equals net income divided by offering price. Estimated Long Term Return
represents an average of the yields to maturity (or call) of the Bonds in the
Trust adjusted to reflect expenses and sales charges.
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                              Estimated Current Return (2)
          AMOUNT PURCHASED                         Public      -----------------------------------------------------------
- -------------------------------------  Sales      Offering         Monthly           Quarterly            Semi-Annual
     Units              Dollars        Charge     Price (1)        Payment            Payment               Payment
- ----------------  -------------------  ------    -----------   ---------------    ---------------    ---------------------
<S>               <C>                  <C>       <C>           <C>       <C>      <C>       <C>      <C>       <C>
50-499                 $5,000-$49,999   3.00 %   $    101.73     (4.04%)  4.06%     (4.07%)  4.09%     (4.09%)  4.11%
500-999                 50,000-99,999   2.80          101.52     (4.04)   4.06      (4.08)   4.10      (4.09)   4.11
1,000-2,499           100,000-249,999   2.60          101.31     (4.05)   4.07      (4.08)   4.10      (4.10)   4.12
2,500-4,999           250,000-499,999   2.35          101.06     (4.06)   4.08      (4.09)   4.11      (4.11)   4.13
5,000-9,999           500,000-999,999   2.10          100.80     (4.07)   4.09      (4.10)   4.13      (4.12)   4.14
10,000-24,999     1,000,000- 2,499,999  1.85          100.54     (4.08)   4.10      (4.12)   4.14      (4.13)   4.15
25,000-49,999     2,500,000- 4,999,999  1.80          100.49     (4.09)   4.11      (4.12)   4.14      (4.14)   4.16
50,000 and over    5,000,000 and over   1.50          100.18     (4.10)   4.12      (4.13)   4.15      (4.15)   4.17
</TABLE>
 
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                         Estimated Long Term Return (3)
                                                              -----------------------------------------------------
          AMOUNT PURCHASED                         Public
- -------------------------------------  Sales      Offering          Monthly         Quarterly       Semi-Annual
     Units              Dollars        Charge     Price (1)         Payment          Payment          Payment
- ----------------  -------------------  ------    -----------     -------------    -------------    -------------
<S>               <C>                  <C>       <C>         <C>                <C>              <C>
50-499                 $5,000-$49,999   3.00 %   $    101.73          4.32%            4.35%            4.37%
500-999                 50,000-99,999   2.80          101.52          4.33             4.36             4.37
1,000-2,499           100,000-249,999   2.60          101.31          4.33             4.36             4.38
2,500-4,999           250,000-499,999   2.35          101.06          4.34             4.37             4.39
5,000-9,999           500,000-999,999   2.10          100.80          4.36             4.39             4.41
10,000-24,999     1,000,000- 2,499,999  1.85          100.54          4.37             4.40             4.42
25,000-49,999     2,500,000- 4,999,999  1.80          100.49          4.37             4.40             4.42
50,000 and over    5,000,000 and over   1.50          100.18          4.38             4.41             4.43
</TABLE>
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
(1) As of the business day prior to the Date of Deposit. Units are offered at
    the Public Offering Price plus accrued interest.
(2) All figures as of the business day prior to the Date of Deposit. Figures in
    brackets represent the current return. The first year's estimated current
    returns are slightly lower than those for subsequent years because a portion
    of the monies received in the first year only will be treated as a return of
    principal due to the inclusion in the portfolio of "when issued" or other
    Bonds having delivery dates after the date of settlement for a purchase made
    on the Date of Deposit.
(3) In contrast to Estimated Current Return, Estimated Long Term Return reflects
    the amortization of premium or accretion of discount, if any, on the bonds
    in the Trust's portfolio.
 
- --------------------------------------------------------------------------------
 
REINVESTMENT OPTIONS   Specify automatic reinvestment of trust income, with no
sales charge, to earn compounded dividends with Nuveen mutual funds.
- --------------------------------------------------------------------------------
 
INTEREST DISTRIBUTIONS TO UNITHOLDERS   Unitholders may elect to have interest
distributions made on a monthly, quarterly, or semi-annual basis. Record Dates
are May 1 and November 1 for semi-annual distributions; February 1, May 1,
August 1 and November 1 for quarterly distributions; and the first of each month
for monthly distributions. Details of interest distributions per unit 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
Short Intermediate Insured Trust                  1995                             1996                 per Year +
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        8/1           11/1            2/1            5/1
Distribution Date.....................       8/15          11/15           2/15           5/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .4584(1)                                                  $  4.1261
                                                          --------  $.3438 every month  --------
Quarterly Distribution Plan...........  $   .4584(1)   $  1.0395(2)   $  1.0395      $  1.0395        $  4.1581
Semi-Annual Distribution Plan.........  $   .4584(1)   $  1.0440(3)                  $  2.0880        $  4.1771
- --------------------------------------------------------------------------------------------------------------------
<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) The second distribution under the semi-annual distribution plan represents a 3-month distribution; subsequent semi-annual
    distributions will be regular 6-month distributions.
</TABLE>
    
 
+ Interest for Unitholders of this series began to accrue as of the Date of
Deposit. Units purchased on the Date of Deposit will have $.06 of accrued
interest that will be added to the Public Offering Price on the Settlement Date.
After provision for expenses of the Fund, the daily rate of accrual from the
Date of Deposit to the first Record Date is $.01146 per unit per day.
Consequently, on the first Record Date (08/01/95), accrued interest will total
$0.4584 per unit for the 40-day period. All interest accrued from the Date of
Deposit to the first Record Date, less expenses, will be distributed on the
first Distribution Date to Unitholders of Record as of the first Record Date.
The first payment to all Unitholders of Record on 08/01/95 is $.4584 per unit.
After the first Record Date daily rates of accrual are:
              Monthly - $0.01146              Quarterly - $0.01155
                             Semi-Annual - $0.01160
This daily rate of accrual, and the annual distributions shown above, will
remain the same as long as the portfolio size and composition remain the same.
 
- --------------------------------------------------------------------------------
<PAGE>
- -------------------------------------------------
 
DIVERSIFICATION OF PORTFOLIO INCOME
 
There are 12 Tax-exempt bond issues in this trust; this diversified portfolio
yields current income from issuers in 8 states.
- -------------------------------------------------------
<TABLE>
<CAPTION>
                   Percent
                   of Total
                   Income
<S>                    <C>        <C>
- ------------------------
                                  %
California                   4.8
Illinois                    15.6
Michigan                    10.2
Minnesota                    8.2
 
<CAPTION>
                   Percent
                   of Total
                   Income
- ------------------------
<S>                    <C>        <C>
                                  %
South Carolina               8.8
Texas                       21.1
Utah                         5.7
Washington                  25.6
</TABLE>
 
- -------------------------------------------------
 
AVERAGE PORTFOLIO LIFE The average maturity
of portfolio bonds is 4.8 years.
 
<TABLE>
<CAPTION>
Year Bonds Mature                        Amount      Percent
- -------------------------------------  ----------  -----------
<S>                                    <C>         <C>
2000.................................       6,000         100%
</TABLE>
 
- -------------------------------------------------
 
BONDS INSURED BY MBIA   Each bond in this Nuveen Insured series has been
insured* by the Municipal Bond Investors Assurance Corporation, which guarantees
timely payments of principal and interest. Premium payments have been fully paid
by the Date of Deposit.
 
- -------------------------------------------------
 
CALL PROTECTION   Bonds are first subject to optional redemption by the issuers
in the years and at the prices shown under the Redemption Provisions column in
the Schedule of Investments. Unless otherwise stated, in subsequent years, bonds
are redeemable at declining prices, but not usually below par value. Some issues
or some portions of issues may also be subject to sinking fund redemption or
extraordinary redemption without premium prior to the dates shown.
 
- -------------------------------------------------
 
UNITS OF THE TRUST ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
BY, ANY BANK AND ARE NOT FEDERALLY INSURED OR OTHERWISE PROTECTED BY THE FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER AGENCY AND
INVOLVE INVESTMENT RISK, INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.
 
- -------------------------------------------------
 
* Insurance relates specifically to the bonds and not to the units or to the
  market value of units. Terms of the insurance are more fully described in the
  prospectus. No representation is made as to the insurer's ability to meet its
  commitments. See Section 5 of the prospectus for details.
 
- -------------------------------------------------------
 
FOR A PROSPECTUS CONTAINING MORE COMPLETE INFORMATION, INCLUDING CHARGES AND
EXPENSES, ON THIS NUVEEN TAX-EXEMPT UNIT TRUST AND ANY OTHER NUVEEN FUND, CALL
YOUR BROKER . . . OR NUVEEN AT
 
                                 1-800-257-8787
 
READ THE PROSPECTUS CAREFULLY BEFORE YOU INVEST OR SEND MONEY.
 
808
<PAGE>
NUVEEN  Tax-Exempt Unit Trusts
     NUVEEN
     NEW JERSEY
     INSURED
     TRUST 193
 
            Estimated Current Return
            5.20% to 5.41%
            as of 06/20/95
 
            Estimated Long Term Return
            5.34% to 5.55%
             35,000 units in a
             diversified $3,500,000
             portfolio of tax-exempt
             bonds rated "AAA"
                  Cusip:
                  6706L6 828 Monthly Payment Option
                  6706L6 836 Quarterly Payment Option
                  6706L6 844 Semi-Annual Payment Option
 
                  Registered in New Jersey
                    John Nuveen & Co. Incorporated
                    Investment Bankers
 
<TABLE>
<S>                           <C>
Chicago:                      Atlanta
333 W. Wacker Dr.             Austin
Chicago, Illinois 60606       Boca Raton
Telephone: 312.917.7700       Boston
                              Columbus
New York:                     Dallas/Ft. Worth
Swiss Bank Tower              Irvine
10 East 50th Street           Philadelphia
New York, New York 10022      Phoenix
Telephone: 212.207.2000       San Francisco
                              Seattle
                              Tampa
                              Washington, D.C.
</TABLE>
 
<PAGE>
- --------------------------------------------------------------------------------
 
NUVEEN TAX-EXEMPT UNIT TRUST--INSURED, NEW JERSEY INSURED TRUST 193
SCHEDULE OF INVESTMENTS
DATE OF DEPOSIT JUNE 21, 1995
- --------------------------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                                                                                                             Ratings
                                                                                    Optional         -----------------------
  Aggregate            Name of Issuer and Title of Issue Represented               Redemption        Standard
  Principal               by Sponsor's Contracts to Purchase Bonds                 Provisions        & Poor's       Moody's
  <C>       <C> <S>                                                              <C>                 <C>           <C>
  --------------------------------------------------------------------------------------------------------------------------
  $  180,000    New Jersey Building Authority, State Building Revenue Bonds,       2003 at 102          AAA           Aaa
                  1994 Series, 5.00% Due 6/15/11.
     500,000    New Jersey Economic Development Authority, Water Facilities        2004 at 102          AAA           Aaa
                  Revenue Refunding Bonds (Hackensack Water Company
                  Project-1994 Series A), 5.80% Due 3/1/24.
     455,000    New Jersey Economic Development Authority, Parking Facility        2004 at 102          AAA           Aaa
                  Sublease Revenue Bonds (New Jersey Transit Corporation),
                  Series 1994, 5.75% Due 12/15/17.
     500,000    New Jersey Educational Facilities Authority, Revenue Bonds,        2004 at 102          AAA           Aaa
                  New Jersey Institute of Technology Issue, Series 1994A,
                  6.00% Due 7/1/24.
     165,000    New Jersey Health Care Facilities Financing Authority,             2005 at 101          AAA           Aaa
                  Revenue Bonds, JFK Health Systems, Obligated Group Issue,
                  Series 1995, 5.70% Due 7/1/25.
     500,000    New Jersey Health Care Facilities Financing Authority,             2004 at 100          AAA           Aaa
                  Revenue Bonds, Jersey Shore Medical Center Obligated Group
                  Issue, Series 1994, 5.875% Due 7/1/24. (Original issue
                  discount bonds delivered on or about August 2, 1994 at a
                  price of 93.036% of principal amount.)
     200,000    The Camden County Municipal Utilities Authority (New               No Optional          AAA           Aaa
                  Jersey), County Agreement Sewer Revenue Capital                     Call
                  Appreciation Bonds, 1990B Series, 0.00% Due 9/1/16.
                  (Original issue discount bonds delivered on or about
                  February 21, 1990 at a price of 14.736% of principal
                  amount.)(General Obligation Bonds.)
     500,000    The Pollution Control Financing Authority of Salem County          2003 at 102          AAA           Aaa
                  (New Jersey), Pollution Control Revenue Refunding Bonds,
                  1993 Series C (Public Service Electric and Gas Company
                  Project), 5.55% Due 11/1/33.
     500,000    Commonwealth of Puerto Rico, Public Improvement Refunding          2003 at 101          AAA           Aaa
                  Bonds, Series 1993 (General Obligation Bonds.), 5.50% Due            1/2
                  7/1/13.
  ----------
  $3,500,000
  ----------
  ----------
</TABLE>
    
 
<PAGE>
- --------------------------------------------------------------------------------
UNIT PRICE, ESTIMATED CURRENT RETURN AND ESTIMATED LONG TERM RETURN DEPEND ON
AMOUNT PURCHASED AND PAYMENT OPTION    The sales charges/volume discounts below
apply on all concurrent purchases of any Nuveen trust units, unless any such
purchases are made by a class of investors for which a separate sales charge is
applicable as described more fully in the Prospectus. Estimated Current Return
equals net income divided by offering price. Estimated Long Term Return
represents an average of the yields to maturity (or call) of the Bonds in the
Trust adjusted to reflect expenses and sales charges.
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                          Estimated Current Return (2)
                                                              -----------------------------------------------------
          AMOUNT PURCHASED                         Public
- -------------------------------------  Sales      Offering          Monthly         Quarterly       Semi-Annual
     Units              Dollars        Charge     Price (1)         Payment          Payment          Payment
- ----------------  -------------------  ------    -----------     -------------    -------------    -------------
<S>               <C>                  <C>       <C>         <C>                <C>              <C>
50-499                 $5,000-$49,999   4.90 %   $     99.33          5.20%            5.23%            5.25%
500-999                 50,000-99,999   4.75           99.17          5.21             5.24             5.26
1,000-2,499           100,000-249,999   4.50           98.91          5.22             5.25             5.27
2,500-4,999           250,000-499,999   4.25           98.65          5.23             5.27             5.29
5,000-9,999           500,000-999,999   3.50           97.89          5.27             5.31             5.33
10,000-24,999     1,000,000- 2,499,999  3.00           97.38          5.30             5.33             5.35
25,000-49,999     2,500,000- 4,999,999  2.50           96.88          5.33             5.36             5.38
50,000 and over    5,000,000 and over   2.00           96.39          5.36             5.39             5.41
</TABLE>
 
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                         Estimated Long Term Return (3)
                                                              -----------------------------------------------------
          AMOUNT PURCHASED                         Public
- -------------------------------------  Sales      Offering          Monthly         Quarterly       Semi-Annual
     Units              Dollars        Charge     Price (1)         Payment          Payment          Payment
- ----------------  -------------------  ------    -----------     -------------    -------------    -------------
<S>               <C>                  <C>       <C>         <C>                <C>              <C>
50-499                 $5,000-$49,999   4.90 %   $     99.33          5.34%            5.36%            5.38%
500-999                 50,000-99,999   4.75           99.17          5.34             5.37             5.39
1,000-2,499           100,000-249,999   4.50           98.91          5.36             5.39             5.41
2,500-4,999           250,000-499,999   4.25           98.65          5.37             5.40             5.42
5,000-9,999           500,000-999,999   3.50           97.89          5.41             5.44             5.46
10,000-24,999     1,000,000- 2,499,999  3.00           97.38          5.44             5.47             5.49
25,000-49,999     2,500,000- 4,999,999  2.50           96.88          5.47             5.50             5.52
50,000 and over    5,000,000 and over   2.00           96.39          5.50             5.53             5.55
</TABLE>
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
(1) As of the business day prior to the Date of Deposit. Units are offered at
    the Public Offering Price plus accrued interest.
(2) All figures as of the business day prior to Date of Deposit. The estimated
    current return for purchases made on such date will be as shown, as long as
    the portfolio size and composition remain the same.
(3) In contrast to Estimated Current Return, Estimated Long Term Return reflects
    the amortization of premium or accretion of discount, if any, on the bonds
    in the Trust's portfolio.
 
- --------------------------------------------------------------------------------
 
INTEREST DISTRIBUTIONS TO UNITHOLDERS   Unitholders may elect to have interest
distributions made on a monthly, quarterly, or semi-annual basis. Record Dates
are May 1 and November 1 for semi-annual distributions; February 1, May 1,
August 1 and November 1 for quarterly distributions; and the first of each month
for monthly distributions. Details of interest distributions per unit 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 Jersey Insured Trust                          1995                             1996                 per Year +
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        8/1           11/1            2/1            5/1
Distribution Date.....................       8/15          11/15           2/15           5/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .5736(1)                                                  $  5.1627
                                                          --------  $.4302 every month  --------
Quarterly Distribution Plan...........  $   .5736(1)   $  1.2978(2)   $  1.2978      $  1.2978        $  5.1947
Semi-Annual Distribution Plan.........  $   .5736(1)   $  1.3032(3)                  $  2.6064        $  5.2137
- --------------------------------------------------------------------------------------------------------------------
<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) The second distribution under the semi-annual distribution plan represents a 3-month distribution; subsequent semi-annual
    distributions will be regular 6-month distributions.
</TABLE>
    
 
+ Interest for Unitholders of this series began to accrue as of the Date of
Deposit. Units purchased on the Date of Deposit will have $.07 of accrued
interest that will be added to the Public Offering Price on the Settlement Date.
After provision for expenses of the Fund, the daily rate of accrual from the
Date of Deposit to the first Record Date is $.01434 per unit per day.
Consequently, on the first Record Date (08/01/95), accrued interest will total
$0.5736 per unit for the 40-day period. All interest accrued from the Date of
Deposit to the first Record Date, less expenses, will be distributed on the
first Distribution Date to Unitholders of Record as of the first Record Date.
The first payment to all Unitholders of Record on 08/01/95 is $.5736 per unit.
After the first Record Date daily rates of accrual are:
              Monthly - $0.01434              Quarterly - $0.01442
                             Semi-Annual - $0.01448
This daily rate of accrual, and the annual distributions shown above, will
remain the same as long as the portfolio size and composition remain the same.
 
- --------------------------------------------------------------------------------
 
                                                          808
<PAGE>
- -------------------------------------------------------
 
AVERAGE PORTFOLIO LIFE   The average maturity of portfolio bonds is 26.8 years.
The first bond is scheduled to mature in June, 2011, with the last bond maturity
being November, 2033.
 
- -------------------------------------------------------
 
BONDS INSURED BY MBIA   Each bond in this Nuveen Insured series has been
insured* by the Municipal Bond Investors Assurance Corporation, which guarantees
timely payments of principal and interest. Premium payments have been fully paid
by the Date of Deposit.
 
- -------------------------------------------------------
 
CALL PROTECTION   Bonds are first subject to optional redemption by the issuers
in the years and at the prices shown under the Redemption Provisions column in
the Schedule of Investments. Unless otherwise stated, in subsequent years, bonds
are redeemable at declining prices, but not usually below par value. Some issues
or some portions of issues may also be subject to sinking fund redemption or
extraordinary redemption without premium prior to the dates shown.
 
- -------------------------------------------------------
 
NO CHARGE FOR REDEMPTION   The Trustee, United States Trust Company of New York,
will redeem units at net asset value. In addition, John Nuveen & Co.
Incorporated intends to maintain a secondary market for this Nuveen Tax-Exempt
Unit Trust. Inasmuch as all securities investments are subject to market price
fluctuation, net asset value at the time of redemption could be more or less
than the initial investment.
 
- -------------------------------------------------------
 
REINVESTMENT OPTIONS   Specify automatic reinvestment of trust income, with no
sales charge, to earn compounded dividends with Nuveen mutual funds.
 
- -------------------------------------------------------
 
UNITS OF THE TRUST ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
BY, ANY BANK AND ARE NOT FEDERALLY INSURED OR OTHERWISE PROTECTED BY THE FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER AGENCY AND
INVOLVE INVESTMENT RISK, INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.
 
- -------------------------------------------------------
 
* Insurance relates specifically to the bonds and not to the units or to the
  market value of units. Terms of the insurance are more fully described in the
  prospectus. No representation is made as to the insurer's ability to meet its
  commitments. See Section 5 of the prospectus for details.
 
- -------------------------------------------------------
 
FOR A PROSPECTUS CONTAINING MORE COMPLETE INFORMATION, INCLUDING CHARGES AND
EXPENSES, ON THIS NUVEEN TAX-EXEMPT UNIT TRUST AND ANY OTHER NUVEEN FUND, CALL
YOUR BROKER . . . OR NUVEEN AT
 
                                 1-800-257-8787
 
READ THE PROSPECTUS CAREFULLY BEFORE YOU INVEST OR SEND MONEY.
<PAGE>
NUVEEN  Tax-Exempt Unit Trusts
     NUVEEN
     PENNSYLVANIA
     INSURED
     TRUST 198
 
            Estimated Current Return
            5.32% to 5.54%
            as of 06/20/95
 
            Estimated Long Term Return
            5.40% to 5.62%
             35,000 units in a
             diversified $3,500,000
             portfolio of tax-exempt
             bonds rated "AAA"
                  Cusip:
                  6706H8 167 Monthly Payment Option
                  6706H8 175 Quarterly Payment Option
                  6706H8 183 Semi-Annual Payment Option
 
                  Registered in Pennsylvania & Florida
                    John Nuveen & Co. Incorporated
                    Investment Bankers
 
<TABLE>
<S>                           <C>
Chicago:                      Atlanta
333 W. Wacker Dr.             Austin
Chicago, Illinois 60606       Boca Raton
Telephone: 312.917.7700       Boston
                              Columbus
New York:                     Dallas/Ft. Worth
Swiss Bank Tower              Irvine
10 East 50th Street           Philadelphia
New York, New York 10022      Phoenix
Telephone: 212.207.2000       San Francisco
                              Seattle
                              Tampa
                              Washington, D.C.
</TABLE>
 
<PAGE>
- --------------------------------------------------------------------------------
 
NUVEEN TAX-EXEMPT UNIT TRUST--INSURED, PENNSYLVANIA INSURED TRUST 198
SCHEDULE OF INVESTMENTS
DATE OF DEPOSIT JUNE 21, 1995
- --------------------------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                                                                                                             Ratings
                                                                                    Optional         -----------------------
  Aggregate            Name of Issuer and Title of Issue Represented               Redemption        Standard
  Principal               by Sponsor's Contracts to Purchase Bonds                 Provisions        & Poor's       Moody's
  <C>       <C> <S>                                                              <C>                 <C>           <C>
  --------------------------------------------------------------------------------------------------------------------------
  $  500,000    Commonwealth of Pennsylvania, General Obligation Bonds,            2004 at 101          AAA           Aaa
                  Second Series of 1994 (Refunding and Projects), 5.60% Due            1/2
                  6/15/14.
     500,000    Pennsylvania Intergovernmental Cooperation Authority,              2003 at 100          AAA           Aaa
                  Special Tax Revenue Bonds (City of Philadelphia Funding
                  Program), Series of 1993, 5.625% Due 6/15/23.
     500,000    Hampton Township School District (Allegheny County,                2005 at 100          AAA           Aaa
                  Pennsylvania), General Obligation Bonds, Refunding Series
                  A of 1995, 6.00% Due 11/15/21.
     500,000    Montgomery County Higher Education and Health Authority            2004 at 102          AAA           Aaa
                  (Pennsylvania), Hospital Revenue Bonds, Series A of 1994
                  (Abington Memorial Hospital), 5.125% Due 6/1/24.
     500,000    City of Philadelphia, Pennsylvania, Water and Wastewater           2005 at 102          AAA           Aaa
                  Revenue Bonds, Series 1995, 5.60% Due 8/1/18.
     500,000    Punxsutawney Area School District (Jefferson and Indiana           2005 at 100          AAA           Aaa
                  Counties, Pennsylvania), General Obligation Bonds, Series
                  of 1995, 5.90% Due 4/15/20.
     500,000    Commonwealth of Puerto Rico, Public Improvement Refunding          2003 at 100          AAA           Aaa
                  Bonds, Series 1993 (General Obligation Bonds.), 5.00% Due
                  7/1/21. (Original issue discount bonds delivered on or
                  about July 15, 1993 at a price of 90.01% of principal
                  amount.)
  ----------
  $3,500,000
  ----------
  ----------
</TABLE>
    
 
<PAGE>
- --------------------------------------------------------------------------------
UNIT PRICE, ESTIMATED CURRENT RETURN AND ESTIMATED LONG TERM RETURN DEPEND ON
AMOUNT PURCHASED AND PAYMENT OPTION    The sales charges/volume discounts below
apply on all concurrent purchases of any Nuveen trust units, unless any such
purchases are made by a class of investors for which a separate sales charge is
applicable as described more fully in the Prospectus. Estimated Current Return
equals net income divided by offering price. Estimated Long Term Return
represents an average of the yields to maturity (or call) of the Bonds in the
Trust adjusted to reflect expenses and sales charges.
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                          Estimated Current Return (2)
                                                              -----------------------------------------------------
          AMOUNT PURCHASED                         Public
- -------------------------------------  Sales      Offering          Monthly         Quarterly       Semi-Annual
     Units              Dollars        Charge     Price (1)         Payment          Payment          Payment
- ----------------  -------------------  ------    -----------     -------------    -------------    -------------
<S>               <C>                  <C>       <C>         <C>                <C>              <C>
50-499                 $5,000-$49,999   4.90 %   $    100.26          5.32%            5.35%            5.37%
500-999                 50,000-99,999   4.75          100.11          5.33             5.36             5.38
1,000-2,499           100,000-249,999   4.50           99.84          5.34             5.38             5.40
2,500-4,999           250,000-499,999   4.25           99.58          5.36             5.39             5.41
5,000-9,999           500,000-999,999   3.50           98.81          5.40             5.43             5.45
10,000-24,999     1,000,000- 2,499,999  3.00           98.30          5.43             5.46             5.48
25,000-49,999     2,500,000- 4,999,999  2.50           97.79          5.46             5.49             5.51
50,000 and over    5,000,000 and over   2.00           97.30          5.48             5.52             5.54
</TABLE>
 
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                         Estimated Long Term Return (3)
                                                              -----------------------------------------------------
          AMOUNT PURCHASED                         Public
- -------------------------------------  Sales      Offering          Monthly         Quarterly       Semi-Annual
     Units              Dollars        Charge     Price (1)         Payment          Payment          Payment
- ----------------  -------------------  ------    -----------     -------------    -------------    -------------
<S>               <C>                  <C>       <C>         <C>                <C>              <C>
50-499                 $5,000-$49,999   4.90 %   $    100.26          5.40%            5.43%            5.45%
500-999                 50,000-99,999   4.75          100.11          5.41             5.44             5.46
1,000-2,499           100,000-249,999   4.50           99.84          5.42             5.45             5.47
2,500-4,999           250,000-499,999   4.25           99.58          5.44             5.46             5.48
5,000-9,999           500,000-999,999   3.50           98.81          5.48             5.51             5.53
10,000-24,999     1,000,000- 2,499,999  3.00           98.30          5.51             5.54             5.56
25,000-49,999     2,500,000- 4,999,999  2.50           97.79          5.54             5.57             5.59
50,000 and over    5,000,000 and over   2.00           97.30          5.57             5.60             5.62
</TABLE>
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
(1) As of the business day prior to the Date of Deposit. Units are offered at
    the Public Offering Price plus accrued interest.
(2) All figures as of the business day prior to Date of Deposit. The estimated
    current return for purchases made on such date will be as shown, as long as
    the portfolio size and composition remain the same.
(3) In contrast to Estimated Current Return, Estimated Long Term Return reflects
    the amortization of premium or accretion of discount, if any, on the bonds
    in the Trust's portfolio.
 
- --------------------------------------------------------------------------------
 
INTEREST DISTRIBUTIONS TO UNITHOLDERS   Unitholders may elect to have interest
distributions made on a monthly, quarterly, or semi-annual basis. Record Dates
are May 1 and November 1 for semi-annual distributions; February 1, May 1,
August 1 and November 1 for quarterly distributions; and the first of each month
for monthly distributions. Details of interest distributions per unit 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                        1995                             1996                 per Year +
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        8/1           11/1            2/1            5/1
Distribution Date.....................       8/15          11/15           2/15           5/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .5928(1)                                                  $  5.3358
                                                          --------  $.4446 every month  --------
Quarterly Distribution Plan...........  $   .5928(1)   $  1.3419(2)   $  1.3419      $  1.3419        $  5.3678
Semi-Annual Distribution Plan.........  $   .5928(1)   $  1.3464(3)                  $  2.6928        $  5.3868
- --------------------------------------------------------------------------------------------------------------------
<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) The second distribution under the semi-annual distribution plan represents a 3-month distribution; subsequent semi-annual
    distributions will be regular 6-month distributions.
</TABLE>
    
 
+ Interest for Unitholders of this series began to accrue as of the Date of
Deposit. Units purchased on the Date of Deposit will have $.07 of accrued
interest that will be added to the Public Offering Price on the Settlement Date.
After provision for expenses of the Fund, the daily rate of accrual from the
Date of Deposit to the first Record Date is $.01482 per unit per day.
Consequently, on the first Record Date (08/01/95), accrued interest will total
$0.5928 per unit for the 40-day period. All interest accrued from the Date of
Deposit to the first Record Date, less expenses, will be distributed on the
first Distribution Date to Unitholders of Record as of the first Record Date.
The first payment to all Unitholders of Record on 08/01/95 is $.5928 per unit.
After the first Record Date daily rates of accrual are:
              Monthly - $0.01482              Quarterly - $0.01491
                             Semi-Annual - $0.01496
This daily rate of accrual, and the annual distributions shown above, will
remain the same as long as the portfolio size and composition remain the same.
 
- --------------------------------------------------------------------------------
 
                                                          808
<PAGE>
- -------------------------------------------------------
 
AVERAGE PORTFOLIO LIFE   The average maturity of portfolio bonds is 25.2 years.
The first bond is scheduled to mature in June, 2014, with the last bond maturity
being June, 2024.
 
- -------------------------------------------------------
 
BONDS INSURED BY MBIA   Each bond in this Nuveen Insured series has been
insured* by the Municipal Bond Investors Assurance Corporation, which guarantees
timely payments of principal and interest. Premium payments have been fully paid
by the Date of Deposit.
 
- -------------------------------------------------------
 
CALL PROTECTION   Bonds are first subject to optional redemption by the issuers
in the years and at the prices shown under the Redemption Provisions column in
the Schedule of Investments. Unless otherwise stated, in subsequent years, bonds
are redeemable at declining prices, but not usually below par value. Some issues
or some portions of issues may also be subject to sinking fund redemption or
extraordinary redemption without premium prior to the dates shown.
 
- -------------------------------------------------------
 
NO CHARGE FOR REDEMPTION   The Trustee, United States Trust Company of New York,
will redeem units at net asset value. In addition, John Nuveen & Co.
Incorporated intends to maintain a secondary market for this Nuveen Tax-Exempt
Unit Trust. Inasmuch as all securities investments are subject to market price
fluctuation, net asset value at the time of redemption could be more or less
than the initial investment.
 
- -------------------------------------------------------
 
REINVESTMENT OPTIONS   Specify automatic reinvestment of trust income, with no
sales charge, to earn compounded dividends with Nuveen mutual funds.
 
- -------------------------------------------------------
 
UNITS OF THE TRUST ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
BY, ANY BANK AND ARE NOT FEDERALLY INSURED OR OTHERWISE PROTECTED BY THE FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER AGENCY AND
INVOLVE INVESTMENT RISK, INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.
 
- -------------------------------------------------------
 
* Insurance relates specifically to the bonds and not to the units or to the
  market value of units. Terms of the insurance are more fully described in the
  prospectus. No representation is made as to the insurer's ability to meet its
  commitments. See Section 5 of the prospectus for details.
 
- -------------------------------------------------------
 
FOR A PROSPECTUS CONTAINING MORE COMPLETE INFORMATION, INCLUDING CHARGES AND
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