INSURED MUNICIPALS INCOME TRUST 229TH INSURED MULTI SERIES
487, 1998-03-30
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                                                              FILE NO. 333-45163
                                                                     CIK #896375

                       SECURITIES AND EXCHANGE COMMISSION
                           WASHINGTON, D.C. 20549-1004

                                 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:    INSURED MUNICIPALS INCOME TRUST
                              229th INSURED MULTI-SERIES

B.    Name of Depositor:      VAN KAMPEN AMERICAN CAPITAL
                              DISTRIBUTORS, INC.

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

      One Parkview Plaza
      Oakbrook Terrace, Illinois  60181

D. Name and complete address of agents for service:

      CHAPMAN AND CUTLER             VAN KAMPEN AMERICAN CAPITAL
      Attention:  Mark J. Kneedy     DISTRIBUTORS, INC.
      111 W. Monroe Street           Attention:  Don G. Powell, Chairman
      Chicago, Illinois  60603       One Parkview Plaza
                                     Oakbrook Terrace, Illinois  60181

E. Title of securities being registered: Units of fractional undivided
   beneficial interest.

F. Approximate date of proposed sale to the public:

             AS SOON AS PRACTICABLE AFTER THE EFFECTIVE DATE OF THE
                             REGISTRATION STATEMENT

/ X / Check box if it is proposed that this filing will become effective
      on March 30, 1998 pursuant to Rule 487.

<PAGE>
                        INSURED MUNICIPALS INCOME TRUST,

                           229TH INSURED MULTI-SERIES

                              CROSS REFERENCE SHEET

                     Pursuant to Rule 404(c) of Regulation C
                        under the Securities Act of 1933

                   (Form N-8B-2 Items Required by Instruction
                         1 as to Prospectus on Form S-6)

FORM N-8B-2                                                             FORM S-6
ITEM NUMBER                                                HEADING IN PROSPECTUS

                     I. ORGANIZATION AND GENERAL INFORMATION

1.    (a)  Name of trust                 )
      (b)  Title of securities issued    )   Prospectus Part I Front Cover Page

2.    Name and address of Depositor      )   Part II-Introduction
                                         )   Part I-Summary of Essential 
                                               Financial Information
                                         )   Part II-Trust Administration

3.    Name and address of Trustee        )   Part II-Introduction
                                         )   Part I-Summary of Essential 
                                               Financial Information
                                         )   Part II-Trust Administration

4.    Name and address of principal      )   Part I-Other Matters-Underwriting
        underwriter                      )

5.    Organization of trust              )   Part II-Introduction

6.    Execution and termination of       )   Part II-Introduction
        Trust Indenture and Agreement    )   Part II-Trust Administration

7.    Changes of Name                    )   *

8.    Fiscal year                        )   *

9.    Material Litigation                )   *



        II. GENERAL DESCRIPTION OF THE TRUST AND SECURITIES OF THE TRUST

10.     General information regarding    )   Part II-Introduction
          trust's securities and rights  )   Part II-Unitholder Explanations
          of security holders            )   Part II-Trust Administration

11.     Type of securities comprising    )   Part II-Introduction
          units                          )   Part I-Trust Information
                                         )   Part I-Portfolios

12.     Certain information regarding    )   *
          periodic payment certificates  )

13.     (a)  Load, fees, charges and     )   Part II-Introduction
          expenses                       )   Part I-Summary of Essential
                                         )     Financial Information
                                         )   Part II-Unitholder Explanations
                                         )   Part I-Trust Information
                                         )   Part II-Trust Administration

        (b)  Certain information regard- )   *
               ing periodic payment plan )
               certificates              )

        (c)  Certain percentages         )   Part I-Summary of Essential 
                                         )     Financial Information
                                         )   Part II-Unitholder Explanations

        (d)  Certain other fees,         )   Part II-Unitholder Explanations
               expenses or charges       )   Part II-Trust Administration
               payable by holders        )

        (e)  Certain profits to be       )   Part II-Unitholder Explanations
               received by depositor,    )   Part I-Other Matters-Underwriting
               principal underwriter,    )   Part I-Notes to Portfolios
               trustee or affiliated     )
               persons                   )

        (f)  Ratio of annual charges     )   *
               to income                 )

14.     Issuance of trust's securities   )   Part II-Unitholder Explanations

15.     Receipt and handling of payments )   *
          from purchasers                )

16.     Acquisition and disposition of   )   Part II-Introduction
          underlying securities          )   Part II-Unitholder Explanations
                                         )   Part II-Trust Administration

17.     Withdrawal or redemption         )   Part II-Unitholder Explanations
                                         )   Part II-Trust Administration

18.     (a)  Receipt and disposition     )   Part II-Introduction
          of income                      )   Part II-Unitholder Explanations

        (b)  Reinvestment of distribu-   )   *
               tions                     )

        (c)  Reserves or special funds   )   Part II-Unitholder Explanations
                                         )   Part II-Trust Administration

        (d)  Schedule of distributions   )   *

19.     Records, accounts and reports    )   Part II-Unitholder Explanations
                                         )   Part II-Trust Administration

20.     Certain miscellaneous provisions )   Part II-Trust Administration
          of Trust Agreement             )

21.     Loans to security holders        )   *

22.     Limitations on liability         )   Part I-Portfolios
                                         )   Part II-Trust Administration

23.     Bonding arrangements             )   *

24.     Other material provisions of     )   *
          trust indenture or agreement   )


        III. ORGANIZATION, PERSONNEL AND AFFILIATED PERSONS OF DEPOSITOR

25.     Organization of Depositor        )   Part II-Trust Administration

26.     Fees received by Depositor       )   Part II-Trust Administration

27.     Business of Depositor            )   Part II-Trust Administration

28.     Certain information as to        )
          officials and affiliated       )   *
          persons of Depositor           )

29.     Companies owning securities of   )   *
          Depositor                      )

30.     Controlling persons of Depositor )   *

31.     Compensation of Directors        )   *

32.     Compensation of Directors        )   *

33.     Compensation of Employees        )   *

34.     Compensation to other persons    )   Part II-Unitholder Explanations


                  IV. DISTRIBUTION AND REDEMPTION OF SECURITIES

35.     Distribution of trust's          )   Part II-Introduction
          securities by states           )   Part II-Settlement of Bonds in
                                                the Trusts

36.     Suspension of sales of trust's   )   *
          securities                     )

37.     Revocation of authority to       )   *
          distribute                     )

38.     (a)  Method of distribution      )

        (b)  Underwriting agreements     )   Part II-Unitholder Explanations

        (c)  Selling agreements          )

39.     (a)  Organization of principal   )
               underwriter               )
                                         )   Part II-Trust Administration
        (b)  N.A.S.D. membership by      )
               principal underwriter     )

40.     Certain fees received by         )   *
          principal underwriter          )

41.     (a)  Business of principal       )   Part II-Trust Administration
          underwriter                    )

        (b)  Branch offices of principal )   *
          underwriter                    )

        (c)  Salesmen of principal       )   *
          underwriter                    )

42.     Ownership of securities of the   )   *
          trust                          )

43.     Certain brokerage commissions    )
          received by principal          )   *
          underwriter                    )

44.     (a)  Method of valuation         )   Part II-Introduction
                                         )   Part I-Summary of Essential
                                         )      Financial Information
                                         )   Part II-Unitholder Explanations
                                         )   Part II-Trust Administration

        (b)  Schedule as to offering     )   *
               price                     )

        (c)  Variation in offering price )   Part II-Unitholder Explanations
               to certain persons        )

45.     Suspension of redemption rights  )   *

46.     (a)  Redemption valuation        )   Part II-Unitholder Explanations
                                         )   Part II-Trust Administration

        (b)  Schedule as to redemption   )   *
          price                          )

47.     Purchase and sale of interests   )   Part II-Unitholder Explanations
          in underlying securities       )   Part II-Trust Administration


               V. INFORMATION CONCERNING THE TRUSTEE OR CUSTODIAN

48.     Organization and regulation of   )   Part II-Trust Administration
          trustee                        )

49.     Fees and expenses of trustee     )   Part I-Summary of Essential 
                                         )     Financial Information
                                         )   Part II-Trust Administration

50.     Trustee's lien                   )   Part II-Trust Administration


          VI. INFORMATION CONCERNING INSURANCE OF HOLDERS OF SECURITIES

51.     Insurance of holders of trust's  )
          securities                     )   *


                            VII. POLICY OF REGISTRANT

52.     (a)  Provisions of trust agree-  )
               ment with respect to      )
               replacement or elimi-     )   Part II-Trust Administration
               nation of portfolio       )
               securities                )

        (b)  Transactions involving      )
               elimination of underlying )   *
               securities                )

        (c)  Policy regarding substitu-  )   Part II-Trust Administration
               tion or elimination of    )
               underlying securities     )

        (d)  Fundamental policy not      )   *
               otherwise covered         )

53.     Tax Status of trust              )   Part I-Trust Information
                                         )   Part II-Federal Tax Status


                   VIII. Financial and Statistical Information

54.     Trust's securities during        )   *
          last ten years                 )

55.                                      )
                                         )

56.     Certain information regarding    )   *
                                         )

57. Periodic payment certificates )

58.                                      )

59.     Financial statements (Instruc-   )   Part I-Other Matters
          tions 1(c) to Form S-6)        )

- ----------------------------------
* Inapplicable, omitted, answer negative or not required


                           VAN KAMPEN AMERICAN CAPITAL
                                PROSPECTUS PART I

              MISSOURI INSURED MUNICIPALS INCOME TRUST, SERIES 106

- --------------------------------------------------------------------------------



   
   Missouri Insured Municipals Income Trust, Series 106 (the "Trust") (included
in Insured Municipals Income Trust, 229th Insured Multi-Series (the "Fund"))
consists of interest-bearing obligations issued by or on behalf of
municipalities and other governmental authorities, the interest on which is, in
the opinion of bond counsel to the issuer, exempt from all Federal income taxes
under existing law and exempt to the extent described herein from Missouri state
and local taxes when held by residents of Missouri (the "Bonds"). The objective
of the Trust is Federal and Missouri tax-exempt income and conservation of
capital through an investment in a diversified portfolio of tax-exempt bonds.
The Units of the Trust are rated "AAA" by Standard & Poor's. The Trust is
referred to herein as the "State Trust" or "Insured Trust".
   The Trust consists of 9 issues of Bonds. None of the Bonds are general
obligations of the governmental entities issuing them or are backed by the
taxing power thereof. All of the issues are payable from the income of a
specific project or authority and are not supported by the issuer's power to
levy taxes. These issues are divided by purpose of issues (and percentage of
principal amount) as follows: Higher Education, 2 (25%); Retail
Electric/Gas/Telephone, 2 (25%); Airport, 1 (17%); Public Building, 1 (17%);
Certificate of Participation, 1 (8%); Health Care, 1 (5%) and General Purpose, 1
(3%). The dollar weighted average maturity of the Bonds is 25 years.

                                           Monthly                Semi-Annual
                                        -------------             -----------
Estimated Current Return:                   4.55%                    4.59%
Estimated Long Term Return:                 4.59%                    4.64%
CUSIP:                                   606086-67-6              606086-68-4
    
   Estimated Current Return shows the estimated cash to be received each year
from the Bonds (net of estimated annual expenses) divided by the Public Offering
Price (including the sales charge).
   Estimated Long-Term Return shows the estimated return over the estimated life
of the Trust. This is based on an average of the yields to maturity (or an
earlier call date) of the Bonds adjusted to reflect the sales charge and
estimated expenses. The average yield for the portfolio is derived by weighting
each Bond's yield by its value and the time remaining to the call or maturity
date, depending on how the Bond is priced. Unlike Estimated Current Return,
Estimated Long-Term Return accounts for maturities, discounts and premiums of
the Bonds.
   No return calculation can predict your actual return because returns vary
with purchase price, sales charges, the length of the time Units are held and
changes in portfolio composition, interest income and expenses. The estimated
returns are designed to show a comparison rather than a prediction of returns. A
yield calculation, which is more comparable to a calculation of an individual
bond, may be higher or lower than these estimated returns which are more
comparable to return calculations of other investment products.

   
                                 MARCH 30, 1998
    


  THIS PROSPECTUS PART I MAY NOT BE DISTRIBUTED UNLESS ACCOMPANIED BY PART II.
     BOTH PARTS OF THIS PROSPECTUS SHOULD BE RETAINED FOR FUTURE REFERENCE.


THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION NOR HAS THE COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY
OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

<PAGE>
   
                   SUMMARY OF ESSENTIAL FINANCIAL INFORMATION
<TABLE>
<CAPTION>
<S>                                       <C>                 <C>                                              <C>
Initial Date of Deposit:                  March 30, 1998      Principal Amount of Bonds per Unit (1):          $ 998.67
Principal Amount of Bonds:                   $ 3,000,000      Number of Units:                                    3,004
- -----------------------------------------------------------------------------------------------------------------------
<CAPTION>
- ----------------------------------------------------------
PUBLIC OFFERING PRICE
- ----------------------------------------------------------
<S>                                            <C>        
Aggregate Offering Price of Bonds:             $ 2,856,818
Aggregate Offering Price of Bonds per Unit:    $    951.00
  Plus Sales Charge per Unit:                  $     49.00
Public Offering Price per Unit (2):            $  1,000.00
Redemption Price per Unit:                     $    943.86

- ----------------------------------------------------------


<CAPTION>
- ----------------------------------------------------------
ESTIMATED ANNUAL INCOME PER UNIT
- ----------------------------------------------------------
                                                  Semi-
                                    Monthly      Annual
                                  -----------  -----------
<S>                               <C>          <C>        
Estimated Interest Income         $    47.66   $     47.66
  Less Estimated Expenses(4)      $     2.16   $      1.74
  Less Estimated Insurance
    Expenses                      $       --   $        --
Estimated Net Interest Income     $    45.50   $     45.92
- ----------------------------------------------------------


- ----------------------------------------------------------
ESTIMATED DISTRIBUTIONS
- ----------------------------------------------------------
                                              Semi-
                         Monthly             Annual
                    -----------------   -----------------
Initial Distribution  $ 4.80 on         $ 12.50 on
                      May 25, 1998        July 25,1998
Normal Distribution
  (3)                 $ 3.79            $    22.96
Record Dates          10th day of         July 10 and
                      each month          January 10
Distribution Dates    25th day of         July 25 and
                      each month          January 25



- -----------------------------------------------------------
EXPENSES
- -----------------------------------------------------------
                                                  Semi-
                                    Monthly      Annual
                                  -----------  -----------
Sales Charge (% of Public
  Offering Price)                       4.90%         4.90%
Estimated Annual Expenses per Unit
  Trustee's Fee (5) (6)           $     0.91   $      0.51
  Evaluator's Supervisory Fee     $     0.25   $      0.25
  Evaluator's Evaluation Fee (5)  $     0.30   $      0.30
  Other Operating Expenses        $     0.89   $      0.87
                                  -----------  -----------
Total Annual Expenses per Unit    $     2.35   $      1.93
                                  ===========  ===========
    
(1) Because certain of the Bonds may from time to time under certain
    circumstances be sold or redeemed or will be called or mature in accordance
    with their terms (including the call or sale of zero coupon bonds at prices
    less than par value), there is no guarantee that the value of each Unit at
    Trust termination will be equal to the Principal Amount of Bonds per Unit.
   
(2) After the First Settlement Date (April 2, 1998), Unitholders will pay
    accrued interest from such date to the settlement date less distributions
    from the Interest Account after the First Settlement Date.
    
(3) This is based on estimated cash flows per Unit which will vary with changes
    in expenses, interest rates and maturity, call, exchange or sale of the
    Bonds. Estimated cash flows are set forth in the Information Supplement or
    are available upon request.
(4) Excludes insurance expenses.
(5) This fee is assessed per $1,000 principal amount of Bonds. Other fees are
    assessed per Unit.
   
(6) During the first year the Trustee will reduce its fee by approximately $.19
    per Unit (which is the estimated interest to be earned prior to the expected
    delivery dates for the "when, as and if issued" Bonds). Should the interest
    exceed this amount, the Trustee will reduce its fee up to its annual fee.
    After the first year, the Trustee's fee will be the amount indicated above.
    Estimated interest income will increase to $47.85. Estimated General
    Expenses will increase to $2.35 and $1.93 under the monthly and semi-annual
    distribution plans, respectively. Estimated Net Interest Income will remain
    as shown.
    
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
PORTFOLIO
- -------------------------------------------------------------------------------------------------------------------
                                                                                                        OFFERING
                                                                                                        PRICE TO
                                                                                                        MISSOURI
AGGREGATE        NAME OF ISSUER, TITLE, INTEREST RATE AND                              REDEMPTION       IM-IT
PRINCIPAL        MATURITY DATE OF BONDS(1)(2)                               RATING(3)  FEATURE(4)       TRUST (2)
- ---------------  --------------------------------------------------------- ----------  --------------   -----------
   
<S>              <C>                                                         <C>       <C>              <C>
$      250,000   Missouri, School Board Association, Lease Participation
                   Certificates (Lexington R-V School District, Lafayette
                   County, Missouri Project) Series 1998A (FSA Insured)                2008 @ 100
                   #5.10% Due 03/01/2018##                                   AAA       2014 @ 100 S.F. $   249,693
       250,000   Puerto Rico Electric Power Authority, Power Revenue Bonds,
                   Series DD (FSA Insured)                                             2008 @ 101.50
                   #4.50% Due 07/01/2019##                                   AAA       2017 @ 100 S.F.     231,915
       500,000   Kansas City, Missouri, Municipal Assistance Corporation,
                   Leasehold Refunding Revenue Bonds, Series 1996A (H. Roe
                   Bartle Convention Center Project) MBIA Insured                      2006 @ 101
                   #5.00% Due 04/15/2020                                     AAA       2016 @ 100 S.F.     490,740
       150,000   Missouri, Health and Educational Facilities Authority,
                   Health Facilities Revenue Bonds (Lester E. Cox Medical
                   Center Project) Series 1992H (MBIA Insured)
                   #0.00% Due 09/01/2021                                     AAA                            45,751
       500,000   City of Sikeston, Missouri, Electric System Revenue Refunding
                   Bonds, Series 1996 (MBIA Insured)                                   2006 @ 101
                   #5.00% Due 06/01/2022                                     AAA       2017 @ 100 S.F.     490,315
       250,000   Missouri, Southern State College Revenue Bonds, Auxiliary
                   Enterprise System (MBIA Insured)                                    2007 @ 100
                   #5.25% Due 10/01/2022                                     AAA       2019 @ 100 S.F.     252,178
       500,000   Missouri, Health and Educational Facilities Authority,
                   Educational Facilities Revenue Bonds (St. Louis University)
                   Series 1996 (AMBAC Assurance Insured)                               2006 @ 102
                   #5.20% Due 10/01/2026                                     AAA       2017 @ 100 S.F.     503,100
       500,000   St. Louis, Missouri, Airport Revenue Bonds (Capital
                   Improvement Program) Lambert-St. Louis International
                   Airport, Series 1997A (FGIC Insured)                                2007 @ 101
                   #5.125% Due 07/01/2027                                    AAA       2023 @ 100 S.F.     495,370
       100,000   Puerto Rico Commonwealth Infrastructure Financing Authority,
                   Special Series A (AMBAC Assurance Insured)                          2008 @ 101
                   #5.00% Due 07/01/2028                                     AAA       2022 @ 100 S.F.      97,756
- ---------------                                                                                        ------------
$    3,000,000                                                                                         $ 2,856,818
===============                                                                                        ============
    

- --------------------------------------------------------------------------------
All of the Bonds are insured either by one of the Preinsured Bond Insurers as
indicated in the Bond name or by a Portfolio Insurer under a portfolio insurance
policy. See "Insurance on the Bonds in the Insured Trusts" in Prospectus Part
II.

For an explanation of the footnotes used on this page, see "Notes to Portfolio".
</TABLE>
<PAGE>

NOTES TO PORTFOLIO
   
(1) The Bonds are represented by "regular way" or "when issued" contracts for
    the performance of which an irrevocable letter of credit, obtained from an
    affiliate of the Trustee, has been deposited with the Trustee. Contracts to
    acquire the Bonds were entered into during the period from March 23, 1998 to
    March 26, 1998.
(2) Other information regarding the Bonds is as follows:

                             COST TO           PROFIT (LOSS)
                             SPONSOR            TO SPONSOR
                         ---------------      ---------------
                           $ 2,839,661           $ 17,157

    The breakdown of the Preinsured Bond Insurers is as follows: AMBAC Assurance
    20%, Financial Guaranty 16%, MBIA 47% and FSA 17%. 
    
    The Sponsor may have entered into contracts which hedge interest rate 
    fluctuations on certain Bonds. The cost of any such contracts and the
    corresponding gain or loss is included in the Cost to Sponsor. Bonds marked
    by "##" following the maturity date have been purchased on a "when, as and
    if issued" or "delayed delivery" basis. Interest on these Bonds begins
    accruing to the benefit of Unitholders on their respective dates of
    delivery. Delivery is expected to take place at various dates after the
    First Settlement Date. 
    
    "#" prior to the coupon rate indicates that the Bond was issued at an 
    original issue discount. See "The Trusts--Risk Factors" in Prospectus 
    Part II. The tax effect of Bonds issued at an original issue discount is
    described in "Federal Tax Status" in Prospectus Part II.
(3) All ratings are by Standard & Poor's unless otherwise indicated. "*"
    indicates that the rating of the Bond is by Moody's. "o" indicates that the
    rating is contingent upon receipt by the rating agency of a policy of
    insurance obtained by the issuer of the bonds. "N/R" indicates that the
    rating service did not provide a rating for that Bond. For a brief
    description of the ratings see "Description of Ratings" in the Information
    Supplement.
(4) This is the year in which each Bond is initially or currently callable and
    the call price for that year. Each Bond continues to be callable at
    declining prices thereafter (but not below par value) except for original
    issue discount bonds which are redeemable at prices based on the issue price
    plus the amount of original issue discount accreted to redemption date plus,
    if applicable, some premium, the amount of which will decline in subsequent
    years. "S.F." indicates a sinking fund is established with respect to an
    issue of Bonds. Certain Bonds may be subject to redemption without premium
    prior to the date shown pursuant to extraordinary optional or mandatory
    redemptions if certain events occur. See "The Trusts--Risk Factors" in
    Prospectus Part II.
<PAGE>
   
   MISSOURI RISK FACTORS. The financial condition of the State of Missouri is
affected by various national, economic, social and environmental policies and
conditions. Additionally, Constitutional and statutory limitations imposed on
the state and its local governments concerning taxes, bond indebtedness and
other matters may constrain the revenue-generating capacity of the State and its
local governments and, therefore, the ability of the issuers of the Bonds to
satisfy their obligations.
   The economic vitality of the State and its various regions and, therefore,
the ability of the State and its local governments to satisfy the Bonds, are
affected by numerous factors. The State's economic base is diversified,
consisting of manufacturing, agriculture and service industries. The State's
financial situation may be affected by increased costs in court-ordered
desegregation payments in St. Louis.
   The State is a party to numerous lawsuits in which an adverse final decision
could materially affect the State's governmental operations and consequently its
ability to pay debt service on its obligations.
   All outstanding general obligation bonds to the State are rated "AAA" by
Standard and Poor's and "Aaa" by Moody's. 
   Further information concerning Missouri risk factors may be obtained upon
request to the Sponsor as described in "Additional Information" appearing in 
Prospectus Part II.
    
   TAX STATUS. For a discussion of the Federal tax status of income earned on
Missouri IM-IT Trust Units, see "Federal Tax Status" in Prospectus Part II.
   The assets of the Missouri IM-IT Trust will consist of debt obligations
issued by or on behalf of the State of Missouri (the "State") or counties,
municipalities, authorities or political subdivisions thereof (the "Missouri
Bonds") or by the Commonwealth of Puerto Rico or an authority thereof (the
"Possession Bonds") (collectively, the "Bonds").
   Neither the Sponsor nor its counsel have independently examined the Bonds to
be deposited in and held in the Missouri IM-IT Trust. However, although no
opinion is expressed herein regarding such matters, it is assumed that: (i) the
Bonds were validly issued, (ii) the interest thereon is excludable from gross
income for Federal income tax purposes and (iii) interest on the Bonds, if
received directly by a Unitholder, would be exempt from the Missouri income tax
applicable to individuals and corporations ("Missouri State Income Tax"). It is
assumed that, at the respective times of issuance of the Bonds, opinions that
the Bonds were validly issued and that interest on the Bonds is excluded from
gross income for Federal income tax purposes were rendered by bond counsel to
the respective issuing authorities. In addition, with respect to the Missouri
Bonds, bond counsel to the issuing authorities rendered opinions that the
interest on the Missouri Bonds is exempt from the Missouri State Income Tax and,
with respect to the Possession Bonds, bond counsel to the issuing authorities
rendered opinions that the Possession Bonds and the interest thereon is exempt
from all state and local income taxation. Neither the Sponsor nor its counsel
has made any review for the Missouri IM-IT Trust of the proceedings relating to
the issuance of the Bonds or the bases for the opinions rendered in connection
therewith. The opinion set forth below does not address the taxation of persons
other than full time residents of Missouri.
   In the opinion of Chapman and Cutler, counsel to the Sponsor under existing
law:
   (1) The Missouri IM-IT Trust is not an association taxable as a corporation
for Missouri income tax purposes, and each Unitholder of the Missouri IM-IT
Trust will be treated as the owner of a pro rata portion of the Missouri IM-IT
Trust and the income of such portion of the Missouri IM-IT Trust will be treated
as the income of the Unitholder for Missouri State Income Tax purposes.
   (2) Interest paid and original issue discount, if any, on the Bonds which
would be exempt from the Missouri State Income Tax if received directly by a
Unitholder will be exempt from the Missouri State Income Tax when received by
the Missouri IM-IT Trust and distributed to such Unitholder; however, no opinion
is expressed herein regarding taxation of interest paid and original issue
discount, if any, on the Bonds received by the Missouri IM-IT Trust and
distributed to Unitholders under any other tax imposed pursuant to Missouri law,
including but not limited to the franchise tax imposed on financial institutions
pursuant to Chapter 148 of the Missouri Statutes.
   (3) Each Unitholder of the Missouri IM-IT Trust will recognize gain or loss
for Missouri State Income Tax purposes if the Trustee disposes of a Bond
(whether by redemption, sale, or otherwise) or if the Unitholder redeems or
sells Units of the Missouri IM-IT Trust to the extent that such a transaction
results in a recognized gain or loss to such Unitholder for Federal income tax
purposes. Due to the amortization of bond premium and other basis adjustments
required by the Internal Revenue Code, a Unitholder under some circumstances,
may realize taxable gain when his or her Units are sold or redeemed for an
amount less than or equal to their original cost.
<PAGE>
   (4) Any insurance proceeds paid under policies which represent maturing
interest on defaulted obligations which are excludable from gross income for
Federal income tax purposes will be excludable from the Missouri State Income
Tax to the same extent as such interest would have been so excludible if paid by
the issuer of such Bonds held by the Missouri IM-IT Trust; however, no opinion
is expressed herein regarding taxation of interest paid and original issue
discount, if any, on the Bonds received by the Missouri IM-IT Trust and
distributed to Unitholders under any other tax imposed pursuant to Missouri law,
including but not limited to the franchise tax imposed on financial institutions
pursuant to Chapter 148 of the Missouri Statutes.
   (5) The Missouri State Income Tax does not permit a deduction of interest
paid or incurred on indebtedness incurred or continued to purchase or carry
Units in the Trust, the interest on which is exempt from such Tax.
   (6) The Missouri IM-IT Trust will not be subject to the Kansas City, Missouri
Earnings and Profits Tax and each Unitholder's share of income of the Bonds held
by the Missouri IM-IT Trust will not generally be subject to the Kansas City,
Missouri Earnings and Profits Tax or the City of St. Louis Earnings Tax (except
that no opinion is expressed in the case of certain Unitholders, including
corporations, otherwise subject to the St. Louis City Earnings Tax).
   Chapman and Cutler has expressed no opinion with respect to taxation under
any other provision of Missouri law. Ownership of the Units may result in
collateral Missouri tax consequences to certain taxpayers. Prospective investors
should consult their tax advisors as to the applicability of any such collateral
consequences.

   UNDERWRITING. The Underwriters named below have purchased Units in the
following amounts from the Sponsor. For additional information regarding the
Underwriters, including information relating to compensation and benefits
received by the Underwriters, see "Public Offering--Sponsor and Underwriter
Compensation" in Prospectus Part II.

   
<TABLE>
<CAPTION>
    NAME                                      ADDRESS                                                              UNITS
                                                                                                               ---------
<S>                                           <C>                                                                  <C>
   Van Kampen American Capital Dist., Inc.    One Parkview Plaza, Oakbrook Terrace, Illinois 60181                 2,154
   Peacock, Hislop, Staley, & Given, Inc.     122 North Kirkwood Road, St. Louis, Missouri 63122                     250
   Dean Witter Reynolds, Incorporated         2 World Trade Center, 59th Floor, New York, New York 10048             100
   A.G. Edwards & Sons, Inc.                  One North Jefferson Avenue, St. Louis, Missouri 63103                  100
   Gruntal & Co., Incorporated                14 Wall Street, New York, New York 10005                               100
   Edward D. Jones & Co.                      201 Progress Parkway, Maryland Heights, Missouri 63043                 100
   Smith Barney Inc.                          388 Greenwich Street, 23rd Floor, New York, New York 10013             100
   Stifel, Nicolaus & Company, Incorporated   500 North Broadway, St. Louis, Missouri 63102                          100
                                                                                                               ---------
                                                                                                                   3,004
                                                                                                               =========
</TABLE>
    
<PAGE>
                     REPORT OF CERTIFIED PUBLIC ACCOUNTANTS

   
   To the Board of Directors of Van Kampen American Capital Distributors, Inc.
and the Unitholders of Missouri  Insured  Municipals Income Trust, Series 106
(included in Insured Municipals Income Trust, 229th Insured Multi-Series):
   We have audited the accompanying statement of condition and the portfolio of
Missouri Insured Municipals Income Trust, Series 106 (included in Insured
Municipals Income Trust, 229th Insured Multi-Series) as of March 30, 1998. The
statement of condition and portfolio are the responsibility of the Sponsor. Our
responsibility is to express an opinion on such financial statements based on
our audit.
   We conducted our audit 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 an irrevocable letter of credit deposited to purchase tax-exempt
bonds 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 our
audit provides a reasonable basis for our opinion.
   In our opinion, the financial statements referred to above present fairly, in
all material respects, the financial position of Missouri Insured Municipals
Income Trust, Series 106 (included in Insured Municipals Income Trust, 229th
Insured Multi-Series) as of March 30, 1998, in conformity with generally
accepted accounting principles.

   Chicago, Illinois                                        GRANT THORNTON LLP
   March 30, 1998
    
   
<TABLE>
<CAPTION>
                             STATEMENT OF CONDITION
                              AS OF MARCH 30, 1998
<S>                                                           <C>

         INVESTMENT IN BONDS

   Contracts to purchase Bonds (1)(2)                         $          2,856,818
   Accrued interest to the First Settlement Date (1)(2)                     47,869
                                                              --------------------
         Total                                                $          2,904,687
                                                              ====================
         LIABILITY AND INTEREST OF UNITHOLDERS
   Liability--
         Accrued interest payable to Sponsor (1)(2)           $             47,869
   Interest of Unitholders--
         Cost to investors                                               3,004,000
         Less: Gross underwriting commission                               147,182
                                                              --------------------
         Net interest to Unitholders (1)(2)                              2,856,818
                                                              --------------------
         Total                                                $          2,904,687
                                                              ====================
    

- ------------------
(1) The value of the Bonds is determined by Interactive Data Corporation on the
    bases set forth under "Public Offering--Offering Price" in Prospectus Part
    II. The contracts to purchase Bonds are collateralized by an irrevocable
    letter of credit in an amount sufficient to satisfy such contracts.

(2) The Trustee will advance the amount of the net interest accrued to the
    First Settlement Date to the Trust for distribution to the Sponsor as the
    Unitholder of record as of such date.
</TABLE>
<PAGE>
                                   PROSPECTUS
                                     PART I



   
                                 MARCH 30, 1998



                               INSURED MUNICIPALS
                                  INCOME TRUST,
                           229TH INSURED MULTI-SERIES


              MISSOURI INSURED MUNICIPALS INCOME TRUST, SERIES 106
    



          ------ A Wealth of Knowledge oA Knowledge of Wealthsm ------
                           VAN KAMPEN AMERICAN CAPITAL



                               One Parkview Plaza
                        Oakbrook Terrace, Illinois 60181

                             2800 Post Oak Boulevard
                              Houston, Texas 77056



                  THIS PROSPECTUS PART I MAY NOT BE DISTRIBUTED
                  UNLESS ACCOMPANIED BY PART II. 
                    BOTH PARTS OF THIS PROSPECTUS SHOULD BE
                         RETAINED FOR FUTURE REFERENCE.


<PAGE>

                           Van Kampen American Capital
                                Prospectus Part I

             New Jersey Insured Municipals Income Trust, Series 122

- --------------------------------------------------------------------------------



   
   New  Jersey  Insured  Municipals  Income  Trust,  Series  122  (the  "Trust")
(included in Insured  Municipals Income Trust,  229th Insured  Multi-Series (the
"Fund"))  consists  of  interest-bearing  obligations  issued by or on behalf of
municipalities and other governmental authorities,  the interest on which is, in
the opinion of bond counsel to the issuer,  exempt from all Federal income taxes
under  existing  law and exempt to the extent  described  herein from New Jersey
state and local taxes when held by  residents of New Jersey (the  "Bonds").  The
objective  of the  Trust  is  Federal  and  New  Jersey  tax-exempt  income  and
conservation  of capital  through an investment  in a  diversified  portfolio of
tax-exempt  bonds.  The Units of the Trust are rated "AAA" by Standard & Poor's.
The Trust is referred to herein as the "State Trust" or "Insured Trust".

   The  Trust  consists  of 9 issues  of  Bonds.  One of the  Bonds is a general
obligation  of the  governmental  entity  issuing it and is backed by the taxing
power  thereof.  The remaining  issues are payable from the income of a specific
project or authority and are not supported by the issuer's  power to levy taxes.
These  issues are  divided by purpose of issues  (and  percentage  of  principal
amount) as follows:  Higher Education,  3 (34%);  Health Care, 3 (34%);  General
Obligation,  1 (17%);  General Purpose, 1 (10%) and Water and Sewer, 1 (5%). The
dollar weighted average maturity of the Bonds is 26 years.

                                        Monthly                Semi-Annual
                                   -------------            ------------
    Estimated Current Return:            4.56%                    4.60%
    Estimated Long Term Return:          4.59%                    4.63%
    CUSIP:                            64579L-18-3              64579L-19-1
    

   Estimated  Current  Return shows the estimated  cash to be received each year
from the Bonds (net of estimated annual expenses) divided by the Public Offering
Price (including the sales charge).

   Estimated Long-Term Return shows the estimated return over the estimated life
of the  Trust.  This is based on an average  of the  yields to  maturity  (or an
earlier  call  date) of the Bonds  adjusted  to  reflect  the sales  charge  and
estimated expenses.  The average yield for the portfolio is derived by weighting
each Bond's  yield by its value and the time  remaining  to the call or maturity
date,  depending on how the Bond is priced.  Unlike  Estimated  Current  Return,
Estimated  Long-Term  Return accounts for maturities,  discounts and premiums of
the Bonds.
   No return  calculation  can predict your actual return  because  returns vary
with purchase  price,  sales charges,  the length of the time Units are held and
changes in portfolio  composition,  interest income and expenses.  The estimated
returns are designed to show a comparison rather than a prediction of returns. A
yield  calculation,  which is more  comparable to a calculation of an individual
bond,  may be  higher  or lower  than  these  estimated  returns  which are more
comparable to return calculations of other investment products.

   
                                 March 30, 1998
    


                  This Prospectus Part I may not be distributed
                         unless accompanied by Part II.

          Both parts of this Prospectus should be retained for future
                                   reference.


THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE  COMMISSION NOR HAS THE COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY
OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


<TABLE>
<CAPTION>

                   Summary of Essential Financial Information

<S>                                       <C>                 <C>                                              <C>     
   
Initial Date of Deposit:                  March 30, 1998      Principal Amount of Bonds per Unit (1):          $ 999.00
Principal Amount of Bonds:                   $ 3,000,000      Number of Units:                                    3,003
<CAPTION>

- --------------------------------------------------------------------------------
Public Offering Price
- --------------------------------------------------------------------------------
<S>                                            <C>        
Aggregate Offering Price of Bonds:             $ 2,855,867
Aggregate Offering Price of Bonds per Unit:    $    951.00
  Plus Sales Charge per Unit:                  $     49.00
Public Offering Price per Unit (2):            $  1,000.00
Redemption Price per Unit:                     $    943.65
- --------------------------------------------------------------------------------

<CAPTION>
- --------------------------------------------------------------------------------
Estimated Annual Income Per Unit
- --------------------------------------------------------------------------------
                                                      Semi-
                                        Monthly      Annual
                                     -----------  -----------
<S>                                   <C>          <C>        
Estimated Interest Income             $    47.85   $     47.85
  Less Estimated Expenses(4)          $     2.30   $      1.89
  Less Estimated Insurance Expenses   $      --    $      --
Estimated Net Interest Income         $    45.55   $     45.96
- --------------------------------------------------------------------------------
<CAPTION>

- --------------------------------------------------------------------------------
Estimated Distributions
- --------------------------------------------------------------------------------
                                                 Semi-
                            Monthly             Annual
                      -----------------   -----------------
<S>                      <C>               <C>          
Initial Distribution     $ 4.80 on         $    12.51 on
                         May 25, 1998        July 25,1998
Normal Distribution (3)  $ 3.79            $    22.98
Record Dates             10th day of         July 10 and
                         each month          January 10
Distribution Dates       25th day of         July 25 and
                         each month          January 25

<CAPTION>
- --------------------------------------------------------------------------------
Expenses
- --------------------------------------------------------------------------------
                                                  Semi-
                                    Monthly      Annual
                                  -----------  -----------
<S>                               <C>          <C>
Sales Charge (% of Public 
  Offering Price)                      4.90%         4.90%
Estimated Annual Expenses per Unit
  Trustee's Fee (5) (6)           $     0.91   $      0.51
  Evaluator's Supervisory Fee     $     0.25   $      0.25
  Evaluator's Evaluation Fee (5)  $     0.30   $      0.30
  Other Operating Expenses        $     0.98   $      0.97
                                  -----------  -----------
Total Annual Expenses per Unit    $     2.44   $      2.03
                                  ===========  ===========
- --------------------------------------------------------------------------------
    


(1) Because   certain  of  the  Bonds  may  from  time  to  time  under  certain
    circumstances  be sold or redeemed or will be called or mature in accordance
    with their terms  (including the call or sale of zero coupon bonds at prices
    less than par value),  there is no guarantee  that the value of each Unit at
    Trust termination will be equal to the Principal Amount of Bonds per Unit.

   
(2) After the  First  Settlement  Date  (April 2,  1998),  Unitholders  will pay
    accrued  interest from such date to the settlement  date less  distributions
    from the Interest Account after the First Settlement Date.
    

(3) This is based on estimated  cash flows per Unit which will vary with changes
    in expenses,  interest  rates and  maturity,  call,  exchange or sale of the
    Bonds.  Estimated cash flows are set forth in the Information  Supplement or
    are available upon request.

(4) Excludes insurance expenses.

(5) This fee is assessed per $1,000 principal amount of Bonds. Other fees are 
    assessed per Unit.

   
(6) During the first year the Trustee will reduce its fee by approximately  $.14
    per Unit (which is the estimated interest to be earned prior to the expected
    delivery dates for the "when, as and if issued" Bonds).  Should the interest
    exceed this  amount,  the Trustee  will reduce its fee up to its annual fee.
    After the first year, the Trustee's fee will be the amount  indicated above.
    Estimated  interest  income  will  increase  to  $47.99.  Estimated  General
    Expenses will increase to $2.44 and $2.03 under the monthly and  semi-annual
    distribution plans, respectively.  Estimated Net Interest Income will remain
    as shown.
</TABLE>
    

<TABLE>
<CAPTION>

PORTFOLIO
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                        Offering
                                                                                                        Price to
                                                                                                        New Jersey
Aggregate        Name of Issuer, Title, Interest Rate and                              Redemption       IM-IT
Principal        Maturity Date of Bonds(1)(2)                               Rating(3)  Feature(4)       Trust (2)
- ---------------  --------------------------------------------------------- ----------  --------------   -----------
<S>              <C>                                                       <C>         <C>             <C>
   
$      250,000   New Jersey, Educational Facilities Authority, Revenue Bonds,
                   Trenton State College Issue, Series 1996A (MBIA Insured)            2006 @ 101
                   #5.10% Due 07/01/2021                                     AAA       2017 @ 100 S.F. $   250,218
       280,000   New Jersey, Educational Facilities Authority, Revenue
                   Bonds, Kean University Issue, Series A (AMBAC
                   Assurance Insured)                                                  2008 @ 100
                   #5.00% Due 07/01/2021                                     AAA       2019 @ 100 S.F.     276,466
       400,000   New Jersey, Health Care Facilities Financing Authority, Revenue
                   Refunding Bonds (FHA) Cathedral Health Services
                   (MBIA Insured)                                                      2008 @ 102
                   #5.25% Due 08/01/2021                                     AAA       2016 @ 100 S.F.     403,500
       500,000   Vineland, New Jersey, General Obligation Water Utility Bond
                   (FGIC Insured)
                   #4.95% Due 03/01/2023                                     AAA       2008 @ 100          486,485
       300,000   Delaware River and Bay Authority, New Jersey, Revenue Bonds,
                   Series 1993 (MBIA Insured)                                          2004 @ 102
                   #4.75% Due 01/01/2024                                     AAA       2018 @ 100 S.F.     284,466
       110,000   New Jersey, Economic Development Authority, Revenue Bonds (St.
                   Barnabas Medical Center Project) Series 1997A (MBIA Insured)
                   #0.00% Due 07/01/2024                                     AAA                            28,623
       500,000   New Jersey, Health Care Facilities Financing Authority,
                   Revenue Refunding Bonds (Bayonne Hospital Obligated Group)
                   FSA Insured                                                         2008 @ 101
                   #4.75% Due 07/01/2027                                     AAA       2019 @ 100 S.F.     469,920
       160,000   Bayonne, New Jersey, Municipal Utilities Authority, Water
                   System, Revenue Bonds (MBIA Insured)                                2008 @ 101
                   #5.00% Due 01/01/2028                                     AAA       2018 @ 100 S.F.     157,154
       500,000   New Jersey, Educational Facilities Authority, Revenue Bonds,
                   Richard Stockton College of New Jersey Issue, Series 1998C
                   (AMBAC Assurance Insured)                                           2008 @ 100
                   5.125% Due 07/01/2028##                                   AAA       2024 @ 100 S.F.     499,035
- ---------------                                                                                        ------------
$    3,000,000                                                                                         $ 2,855,867
===============                                                                                        ============
    

</TABLE>

- --------------------------------------------------------------------------------
All of the Bonds are insured  either by one of the  Preinsured  Bond Insurers as
indicated in the Bond name or by a Portfolio Insurer under a portfolio insurance
policy.  See "Insurance on the Bonds in the Insured  Trusts" in Prospectus  Part
II.

For an explanation of the footnotes used on this page, see "Notes to Portfolio".


Notes to Portfolio

   
(1) The Bonds are  represented  by "regular way" or "when issued"  contracts for
    the performance of which an irrevocable  letter of credit,  obtained from an
    affiliate of the Trustee, has been deposited with the Trustee.  Contracts to
    acquire the Bonds were entered into during the period from March 24, 1998 to
    March 26, 1998.
    

(2) Other information regarding the Bonds is as follows:

   
             Cost to           Profit (Loss)
             Sponsor            to Sponsor
         ---------------      ---------------
           $ 2,836,612           $ 19,255

    The breakdown of the Preinsured Bond Insurers is as follows: AMBAC Assurance
    26%,  Financial  Guaranty  16%,  MBIA 41% and FSA 17%.

    
    The  Sponsor   may  have entered  into  contracts which hedge  interest rate
    fluctuations  on  certain Bonds.  The cost  of  any  such contracts  and the
    corresponding gain  or loss is included in the Cost to Sponsor. Bonds marked
    by "##" following  the maturity date  have been purchased on a "when, as and
    if issued"  or "delayed delivery" basis.  Interest  on  these  Bonds  begins
    accruing  to  the  benefit  of  Unitholders  on  their  respective  dates of
    delivery.  Delivery  is  expected  to  take place at various dates after the
    First Settlement Date.  "#" prior to the coupon rate indicates that the Bond
    was issued at  an original issue discount. See "The Trusts--Risk Factors" in
    Prospectus Part II.  The tax effect of  Bonds  issued  at an  original issue
    discount is described in "Federal Tax Status" in Prospectus Part II.

(3) All  ratings  are by  Standard  & Poor's  unless  otherwise  indicated.  "*"
    indicates that the rating of the Bond is by Moody's.  "o" indicates that the
    rating  is  contingent  upon  receipt  by the  rating  agency of a policy of
    insurance  obtained  by the issuer of the bonds.  "N/R"  indicates  that the
    rating  service  did  not  provide  a  rating  for  that  Bond.  For a brief
    description of the ratings see  "Description  of Ratings" in the Information
    Supplement.

(4) This is the year in which each Bond is initially  or currently  callable and
    the call  price  for that  year.  Each  Bond  continues  to be  callable  at
    declining  prices  thereafter  (but not below par value) except for original
    issue discount bonds which are redeemable at prices based on the issue price
    plus the amount of original issue discount accreted to redemption date plus,
    if applicable,  some premium, the amount of which will decline in subsequent
    years.  "S.F."  indicates a sinking fund is  established  with respect to an
    issue of Bonds.  Certain Bonds may be subject to redemption  without premium
    prior to the date shown  pursuant to  extraordinary  optional  or  mandatory
    redemptions  if certain  events  occur.  See "The  Trusts--Risk  Factors" in
    Prospectus Part II.

   
   New Jersey Risk Factors.  The financial  condition of the State of New Jersey
is affected by various national, economic, social and environmental policies and
conditions.  Additionally,  Constitutional and statutory  limitations imposed on
the State and its local  governments  concerning  taxes,  bond  indebtedness and
other matters may constrain the revenue-generating capacity of the State and its
local  governments  and,  therefore,  the ability of the issuers of the Bonds to
satisfy their obligations.

   The economic  vitality of the State and its various  regions and,  therefore,
the ability of the State and its local  governments  to satisfy  the Bonds,  are
affected  by  numerous  factors.  The  State's  economic  base  is  diversified,
consisting of manufacturing,  construction and service industries,  supplemented
by rural areas with selective commercial agriculture. The State has a relatively
high wage  labor  market  which has  resulted  in the  State's  business  sector
becoming more vulnerable to competitive pressures.

   The State is a party to numerous  lawsuits in which an adverse final decision
could materially affect the State's governmental operations and consequently its
ability to pay debt service on its obligations.

     All outstanding  general  obligation  bonds to the State are rated "AA+" by
Standard and Poor's and "Aa1" by Moody's.

     Further information concerning New Jersey risk factors may be obtained upon
request to the Sponsor as described  in  "Additional  Information"  appearing in
Prospectus Part II.

   Tax Status.  For a discussion  of the Federal tax status of income  earned on
New Jersey IM-IT Trust Units, see "Federal Tax Status" in Prospectus Part II.

     In the opinion of Pitney, Hardin, Kipp & Szuch, special counsel to the Fund
for New Jersey tax matters, under existing law:

     (1) The New Jersey  IM-IT  Trust will be  recognized  as a trust and not an
association  taxable as a  corporation.  The New Jersey  IM-IT Trust will not be
subject to the New Jersey Corporation Business Tax or the New Jersey Corporation
Income Tax.

     (2) With respect to the non-corporate  Unitholders who are residents of New
Jersey, the income of the New Jersey IM-IT Trust which is allocable to each such
Unitholder will be treated as the income of such Unitholder under the New Jersey
Gross Income Tax.  Interest on the  underlying  Bonds which would be exempt from
New Jersey Gross Income Tax if directly  received by such Unitholder will retain
its status as  tax-exempt  interest  when received by the New Jersey IM-IT Trust
and distributed to such Unitholder. Any proceeds paid under the insurance policy
issued to the Trustee of the New Jersey IM-IT Trust with respect to the Bonds or
under individual  policies obtained by issuers of Bonds which represent maturing
interest on  defaulted  obligations  held by the Trustee will be exempt from New
Jersey Gross 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.

   (3) A  non-corporate  Unitholder  will not be subject to the New Jersey Gross
Income Tax on any gain realized  either when the New Jersey IM-IT Trust disposes
of a Bond (whether by sale, exchange,  redemption, or payment at maturity), when
the Unitholder  redeems or sells his Units or upon payment of any proceeds under
the  insurance  policy  issued to the Trustee of the New Jersey IM-IT Trust with
respect to the Bonds or under individual  policies  obtained by issuers of Bonds
which represent maturing principal on defaulted obligations held by the Trustee.
Any loss  realized  on such  disposition  may not be  utilized  to offset  gains
realized by such  Unitholder on the  disposition  of assets the gain on which is
subject to the New Jersey Gross Income Tax.

   (4) Units of the New  Jersey  IM-IT  Trust may be  taxable  on the death of a
Unitholder  under the New Jersey Transfer  Inheritance Tax Law or the New Jersey
Estate Tax Law.

   (5) If a Unitholder  is a corporation  subject to the New Jersey  Corporation
Business Tax or New Jersey  Corporation  Income Tax,  interest from the Bonds in
the New Jersey  IM-IT  Trust  which is  allocable  to such  corporation  will be
includable  in its entire net income for purposes of the New Jersey  Corporation
Business Tax or New Jersey  Corporation  Income Tax,  less any interest  expense
incurred to carry such  investment to the extent such  interest  expense has not
been deducted in computing  Federal  taxable  income.  Net gains derived by such
corporation on the  disposition of the Bonds by the New Jersey IM-IT Trust or on
the  disposition  of its Units  will be  included  in its  entire net income for
purposes of the New Jersey  Corporation  Business Tax or New Jersey  Corporation
Income Tax. Any proceeds paid under the  insurance  policy issued to the Trustee
of the New  Jersey  IM-IT  Trust with  respect to the Bonds or under  individual
policies  obtained  by issuers of Bonds  which  represent  maturing  interest or
maturing principal on defaulted obligations held by the Trustee will be included
in its entire net income for purposes of the New Jersey Corporation Business Tax
or New  Jersey  Corporation  Income  Tax if,  and to the same  extent  as,  such
interest  or  proceeds  would have been so included if paid by the issuer of the
defaulted obligations.
    

   Underwriting.  The  Underwriters  named  below  have  purchased  Units in the
following  amounts from the Sponsor.  For additional  information  regarding the
Underwriters,  including  information  relating  to  compensation  and  benefits
received by the  Underwriters,  see "Public  Offering--Sponsor  and  Underwriter
Compensation" in Prospectus Part II.

<TABLE>
<CAPTION>

    Name                                      Address                                                         Units
                                                                                                       -----------------

<S>                                           <C>                                                                  <C>  
   
   Van Kampen American Capital Dist., Inc.    One Parkview Plaza, Oakbrook Terrace, Illinois 60181                 2,503
   Dean Witter Reynolds, Incorporated         2 World Trade Center, 59th Floor, New York, New York 10048             100
   Gruntal & Co., Incorporated                14 Wall Street, New York, New York 10005                               100
   CIBC Oppenheimer                           World Financial Center, 8th Floor, New York, New York 10281            100
   Prudential Securities Inc.                 1 New York Plaza, 14th Floor, New York, New York 10292-2014            100
   Ryan, Beck & Co.                           80 Main Street, West Orange, New Jersey 07052                          100
                                                                                                       -----------------
                                                                                                                   3,003
                                                                                                       =================
    

</TABLE>
                     Report of Certified Public Accountants

   
     To the Board of Directors of Van Kampen American Capital Distributors, Inc.
and the Unitholders of New Jersey Insured  Municipals  Income Trust,  Series 122
(included in Insured Municipals Income Trust, 229th Insured Multi-Series):

   We have audited the accompanying  statement of condition and the portfolio of
New Jersey  Insured  Municipals  Income  Trust,  Series 122 (included in Insured
Municipals Income Trust,  229th Insured  Multi-Series) as of March 30, 1998. The
statement of condition and portfolio are the responsibility of the Sponsor.  Our
responsibility  is to express an opinion on such financial  statements  based on
our audit.
    

   We  conducted  our  audit 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 an irrevocable letter of credit deposited to purchase tax-exempt
bonds 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 our
audit provides a reasonable basis for our opinion.

   
   In our opinion, the financial statements referred to above present fairly, in
all material  respects,  the financial position of New Jersey Insured Municipals
Income Trust,  Series 122 (included in Insured  Municipals  Income Trust,  229th
Insured  Multi-Series)  as of March  30,  1998,  in  conformity  with  generally
accepted accounting principles.

   Chicago, Illinois                                        GRANT THORNTON LLP
   March 30, 1998
    

<TABLE>
<CAPTION>


   
                             Statement of Condition
                              As of March 30, 1998
    

         INVESTMENT IN BONDS

<S>                                                                                                <C>                  
   
   Contracts to purchase Bonds (1)(2)                                                              $           2,855,867
   Accrued interest to the First Settlement Date (1)(2)                                                           22,184
                                                                                                   --------------------
         Total                                                                                     $           2,878,051
                                                                                                   ====================
         LIABILITY AND INTEREST OF UNITHOLDERS
   Liability--
         Accrued interest payable to Sponsor (1)(2)                                                $              22,184
   Interest of Unitholders--
         Cost to investors                                                                                     3,003,000
         Less: Gross underwriting commission                                                                     147,133
                                                                                                   --------------------
         Net interest to Unitholders (1)(2)                                                                    2,855,867
                                                                                                   --------------------
         Total                                                                                     $           2,878,051
                                                                                                   ====================
    


- ------------------------------------------------------------------------------------------------------------------------
(1) The value of the Bonds is determined by Interactive  Data Corporation on the
    bases set forth under "Public  Offering--Offering  Price" in Prospectus Part
    II. The contracts to purchase  Bonds are  collateralized  by an  irrevocable
    letter of credit in an amount sufficient to satisfy such contracts.

(2) The Trustee will advance the amount of the net interest accrued to the First
    Settlement  Date  to  the  Trust  for  distribution  to  the  Sponsor as the 
    Unitholder of record as of such date.

</TABLE>





                                   PROSPECTUS
                                     PART I




   
                                 March 30, 1998



           Insured Municipals Income Trust, 229th Insured Multi-Series


             New Jersey Insured Municipals Income Trust, Series 122
    










          ------ A Wealth of Knowledge o Knowledge of Wealth(sm) ------
                           VAN KAMPEN AMERICAN CAPITAL




                               One Parkview Plaza
                        Oakbrook Terrace, Illinois 60181

                             2800 Post Oak Boulevard
                              Houston, Texas 77056












                             This  Prospectus  Part  I may  not  be  distributed
                                unless  accompanied  by Part II.  Both  parts of
                                this  Prospectus  should be retained  for future
                                reference.

<PAGE>


February 1998

                           VAN KAMPEN AMERICAN CAPITAL
                               PROSPECTUS PART II

INSURED MUNICIPALS INCOME TRUST, INSURED MULTI-SERIES AND
INSURED MUNICIPALS INCOME TRUST AND INVESTORS' QUALITY TAX-EXEMPT TRUST,
  MULTI-SERIES
- --------------------------------------------------------------------------------

   THE FUND. The objectives of the Fund are Federal and, in the case of a State
Trust, state tax-exempt income and conservation of capital through an investment
in a diversified portfolio of tax-exempt bonds. The Fund consists of the
underlying separate unit investment trusts set forth in Prospectus Part I. The
Bonds are interest-bearing obligations issued by or on behalf of municipalities
and other governmental authorities, the interest on which is exempt from all
Federal income taxes under existing law in the opinion of bond counsel to the
issuer. In addition, the interest income of each State Trust is, in the opinion
of bond counsel to the issuer, exempt to the extent indicated from state and
local taxes, when held by residents of the state where the issuers of the Bonds
are located. Except in specific instances as noted in Prospectus Part I, the
information contained in this Prospectus Part II shall apply to each Trust in
its entirety.
   "AAA" RATING FOR THE INSURED TRUSTS. Insurance guaranteeing the payments of
principal and interest, when due, on the Bonds in each Insured Trust has been
obtained from a municipal bond insurance company. See "Insurance on the Bonds in
the Insured Trusts". Insurance relates only to the Bonds and not to the Units or
to the market value thereof. As a result of such insurance, the Units of each
Insured Trust have received a rating of "AAA" by Standard & Poor's, A Division
of the McGraw-Hill Companies ("Standard & Poor's"). Units of the Trusts are not
insured by the FDIC, are not deposits or other obligations of, or guaranteed by,
any government agency and are subject to investment risk, including possible
loss of the principal amount invested.
   PUBLIC OFFERING PRICE. The Public Offering Price of Units during the initial
offering period includes the aggregate offering price of the Bonds, the
applicable sales charge, cash, if any, in the Principal Account of the Trust,
and accrued interest, if any. Sales charges for the Trusts are set forth under
"Public Offering--General." During the initial offering period, the sales charge
is reduced for sales involving at least 100 Units.
   ESTIMATED CURRENT AND LONG-TERM RETURNS. The Estimated Current Returns and
Estimated Long-Term Returns to Unitholders are described on the cover of 
Prospectus Part I. See "Estimated Current and Long-Term Returns."
   DISTRIBUTION OPTIONS. Unitholders may elect to receive distributions on a
monthly or semi-annual basis. See "Rights of Unitholders--Distributions of
Interest and Principal". Those indicating no choice will be deemed to have
chosen the monthly distribution plan.
   MARKET FOR UNITS. Although not obligated to do so, the Sponsor intends to,
and certain of the other Underwriters may, maintain a secondary market for the
Units. If a secondary market is not available, a Unitholder will always be able
to redeem his Units through the Trustee on any business day. See "Rights of
Unitholders--Redemption of Units" and "Public Offering--Market for Units".
   REINVESTMENT OPTION. Unitholders may reinvest their distributions into Van
Kampen American Capital or Morgan Stanley mutual funds. See "Rights of
Unitholders--Reinvestment Option". Unitholders may also have the option of
exchanging their investment for units of other Van Kampen American Capital unit
investment trusts at a reduced sales charge. Unitholders may obtain a prospectus
for such trusts from the Sponsor.
   RISK FACTORS. An investment in Units should be made with an understanding of
certain risks, including, among other factors, the inability of the issuer or an
insurer, if any, to pay the principal of or interest on a bond when due,
volatile interest rates, early call provisions, and changes to the tax status of
the Bonds. See "The Trusts--Risk Factors".

THIS PROSPECTUS PART II MAY NOT BE DISTRIBUTED UNLESS ACCOMPANIED BY PART I.
BOTH PARTS OF THIS PROSPECTUS SHOULD BE RETAINED FOR FUTURE REFERENCE.

   An Information Supplement has been filed with the Securities and Exchange
Commission ("SEC") and can be obtained without charge by calling (800) 856-8487
 or is available along with other related materials at the SEC's Internet site
   (http://www.sec.gov). This Prospectus incorporates by reference the entire
                            Information Supplement.

- --------------------------------------------------------------------------------
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION NOR HAS THE COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY
OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
<PAGE>
THE TRUSTS
- --------------------------------------------------------------------------------

         THE FUND. This series of the Insured Municipals Income Trust or the
Insured Municipals Income Trust and Investors' Quality Tax-Exempt Trust (the
"Fund"), consists of the underlying separate unit investment trusts described in
Prospectus Part I. The Fund was created under the laws of the State of New York
pursuant to a Trust Indenture and Agreement (the "Trust Agreement"), dated the
date of Prospectus Part I (the "Date of Deposit") among Van Kampen American
Capital Distributors, Inc., as Sponsor, American Portfolio Evaluation Services,
a division of Van Kampen American Capital Investment Advisory Corp., as
Evaluator, and The Bank of New York, as Trustee.
         The Fund consists of separate portfolios of interest-bearing
obligations issued by or on behalf of states and territories of the United
States, and political subdivisions and authorities thereof, the interest on
which is, in the opinion of recognized bond counsel to the issuing authorities,
excludable from gross income for Federal income tax purposes under existing law.
All issuers of Bonds in a State Trust are located in the state for which the
Trust is named or in United States territories or possessions and their public
authorities; consequently, in the opinion of recognized bond counsel to the Bond
issuers, the interest earned on the Bonds is exempt to the extent indicated in
Prospectus Part I from state and local taxes. Further, in the opinion of bond
counsel to the respective issuers, the interest income of each Bond in a U.S.
Territorial IM-IT Trust is exempt from state, Commonwealth of Puerto Rico and
local income taxation. With the exception of New York and Pennsylvania Trusts,
Units of a State Trust may be purchased only by residents of the state for which
the Trust is named. Units of a New York Trust may be purchased by residents of
New York, Connecticut and Florida. Units of a Pennsylvania Trust may be
purchased by residents of Pennsylvania, Connecticut, Florida, Maryland, New
York, Ohio and West Virginia. State Trusts, other than State Intermediate
Laddered Maturity Trusts or State Intermediate Trusts, are referred to herein as
"Long-Term State Trusts".
         On the Date of Deposit, the Sponsor deposited with the Trustee the
aggregate principal amount of Bonds indicated in the "Summary of Essential
Financial Information" in Prospectus Part I. The Bonds initially consist of
delivery statements relating to contracts for their purchase and cash, cash
equivalents and/or irrevocable letters of credit issued by a financial
institution. Thereafter, the Trustee, in exchange for the Bonds, delivered to
the Sponsor evidence of ownership of the number of Units indicated under
"Summary of Essential Financial Information" in Prospectus Part I.
         The portfolio of any IM-IT, IM-IT Discount, U.S. Territorial IM-IT,
Long-Term State or National Quality Trust consists of Bonds maturing
approximately 15 to 40 years from the Date of Deposit. The approximate range of
maturities from the Date of Deposit for Bonds in any IM-IT Limited Maturity
Trust, IM-IT Intermediate Trust, State Intermediate Laddered Maturity Trust and
IM-IT Short Intermediate Trust is 12 to 15 years, 5 to 15 years, 5 to 10 years
and 3 to 7 years, respectively. The portfolio of any State Intermediate Laddered
Maturity Trust is structured so that approximately 20% of the Bonds will mature
each year, beginning in approximately the fifth year of the Trust, entitling
each Unitholder to a return of principal. This return of principal may offer
Unitholders the opportunity to respond to changing economic conditions and to
specific financial needs that may arise between the fifth and tenth years of the
Trust. However, the flexibility provided by the return of principal may also
eliminate a Unitholder's ability to reinvest at a rate as high as the yield on
the Bonds which matured.
         Each Unit initially offered represents a fractional undivided interest
in the principal and net income of a Trust. To the extent that any Units are
redeemed by the Trustee, the fractional undivided interest in a Trust
represented by each Unit will increase, although the actual interest in the
Trust will remain unchanged. Units will remain outstanding until redeemed by
Unitholders or until the termination of the Trust Agreement.
         OBJECTIVES AND BOND SELECTION. The objectives of the Fund are income
exempt from Federal income taxation and, in the case of a State Trust, Federal
and state income taxation and conservation of capital through an investment in
diversified portfolios of Federal and state tax-exempt obligations. A State
Intermediate Laddered Maturity Trust has additional objectives of providing
protection against changes in interest rates and investment flexibility through
an investment in a laddered portfolio of intermediate-term interest-bearing
obligations with maturities ranging from approximately 5 to 10 years in which
roughly 20% of the Bonds mature each year beginning in approximately the fifth
year of the Trust. There is, of course, no guarantee that the Trusts will
achieve their objectives. The Fund may be an appropriate investment vehicle for
investors who desire to participate in a portfolio of tax-exempt fixed income
bonds with greater diversification than they might be able to acquire
individually. Insurance guaranteeing the timely payment, when due, of all
principal and interest on the Bonds in each Insured Trust has been obtained from
a municipal bond insurance company. For information relating to insurance on the
Bonds, see "Insurance on the Bonds in the Insured Trusts". In addition, these
bonds are often not available in small amounts.
<PAGE>
         In selecting Bonds for the Trusts, the Sponsor considered the following
factors, among others: (a) either the Standard & Poor's rating of the Bonds was
not less than "BBB-" for Insured Trusts and "A-" for Quality Trusts, or the
Moody's Investors Service, Inc. ("Moody's") rating of the Bonds was not less
than "Baa" for Insured Trusts and "A" for the Quality Trusts, including
provisional or conditional ratings, respectively, (or, if not rated, the Bonds
had credit characteristics sufficiently similar to the credit characteristics of
interest-bearing tax-exempt bonds that were so rated as to be acceptable for
acquisition by the Fund in the opinion of the Sponsor), (b) the prices of the
Bonds relative to other bonds of comparable quality and maturity, (c) the
diversification of Bonds as to purpose of issue and location of issuer and (d)
with respect to the Insured Trusts, the availability and cost of insurance.
After the Date of Deposit, a Bond may cease to be rated or its rating may be
reduced below the minimum required as of the Date of Deposit. Neither event
requires elimination of a Bond from a Trust but may be considered in the
Sponsor's determination as to whether or not to direct the Trustee to dispose of
the Bond (see "Fund Administration--Portfolio Administration").
         RISK FACTORS. The Trusts include certain types of bonds as described on
the cover of Prospectus Part I. An investment in Units should be made with an
understanding of the characteristics of and risks associated with such bonds.
The following is a brief summary of certain of these risks. Additional
information is included in Prospectus Part I and in the Information Supplement.
See "Additional Information". Neither the Sponsor nor the Trustee are liable for
any default, failure or defect in any of the Bonds.
         Certain of the Bonds may be general obligations of a governmental
entity that are backed by the taxing power of the entity. All other Bonds are
revenue bonds payable from the income of a specific project or authority and are
not supported by the issuer's power to levy taxes. General obligation bonds are
secured by the issuer's pledge of its faith, credit and taxing power for the
payment of principal and interest. Revenue bonds, on the other hand, are payable
only from the revenues derived from a particular facility or class of facilities
or, in some cases, from the proceeds of a special excise tax or other specific
revenue source. There are, of course, variations in the security of the
different Bonds, both within a particular classification and between
classifications, depending on numerous factors.
         Mortgage loan obligations may be FHA insured or may be single family
mortgage revenue bonds 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. A substantial portion of these bonds
will probably be redeemed prior to their scheduled maturities or even prior to
their ordinary call dates. Additionally, unusually high rates of default on the
underlying mortgage loans may reduce revenues available for the payment of
principal of or interest on mortgage revenue bonds.
         Health care revenue bonds have ratings issued for health care
facilities that are often 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 and the ability of
the facility to provide the services required, competition with other health
care facilities, efforts by insurers and governmental agencies to limit rates
and legislation establishing state rate-setting agencies.
         Public utility bond issuers sell wholesale and retail electric power
and gas. General problems of these issuers include difficulty in financing large
construction programs in an inflationary period, costs and delays attributable
to environmental considerations, the difficulty of the capital market in
absorbing utility debt, difficulty in obtaining fuel at reasonable prices, the
effect of energy conservation and government regulations.
         Water and/or sewerage revenue bonds are generally payable from user
fees. The problems of these issuers include the ability to obtain rate
increases, population decline resulting in decreased user fees, financing,
environmental considerations, discovering fresh water and the impact of
"no-growth" zoning ordinances.
         Industrial revenue bonds ("IRBs") have generally been issued under bond
resolutions under which the revenues and receipts payable have been assigned and
pledged to purchasers. In some cases, a mortgage on the underlying project may
have been granted as security for the IRBs. Regardless of the structure, payment
of IRBs is solely dependent upon the creditworthiness of the corporate operator
of the project or corporate guarantor which may be affected by such things as
cyclicality of revenues and earnings, regulatory and environmental restrictions,
litigation resulting from accidents, extensive competition and financial
deterioration resulting from a corporate restructuring.
         Lease bonds are secured by lease payments of a governmental entity and
are often in the form of certificates of participation. Although the lease bonds
do not constitute general obligations of the municipality for which the
municipality's taxing power is pledged, a lease bond is ordinarily backed by the
municipality's covenant to appropriate for and make the payments due under the
lease bond. However, certain lease bonds contain "non-appropriation" clauses
which provide that the municipality has no obligation to make lease payments in
future years unless money is appropriated for such purpose on a yearly basis. 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 bond could result in
insufficient funds available for payment of the bonds secured thereby. Although
"non-appropriation" lease bonds are secured by the leased property, disposition
of the property in the event of foreclosure might prove difficult.
<PAGE>
         Education bond issuers govern the operation of schools, colleges and
universities and revenues are derived mainly from ad valorem taxes or from
tuition, dormitory revenues, grants and endowments. General problems relating to
school bonds include litigation contesting the financing of public education, a
declining percentage of the population consisting of "college" age individuals,
inability to raise tuitions and fees sufficiently and government legislation or
regulations which may adversely affect the revenues or costs of the issuers.
         Transportation bonds are payable from revenues derived from the
ownership and operation of facilities such as airports, bridges, turnpikes, port
authorities, convention centers and arenas. Airport operating income may be
affected by the ability of the airlines to meet their obligations under use
agreements. Payment on bonds related to other facilities may be adversely
affected by reduction in revenues due to such factors as increased cost of
maintenance, decreased use of a facility, lower cost of alternative modes of
transportation, scarcity of fuel and reduction or loss of rents.
         Certain Bonds are payable from revenues derived from the operation of
resource recovery facilities which are designed to process solid waste, generate
steam and convert steam to electricity. Resource recovery bonds may be subject
to extraordinary optional redemption at par upon the occurrence of circumstances
such as destruction or condemnation of a project, void or unenforceable
contracts, changes in the economic availability of raw materials, and operating
supplies or facilities, or other unavoidable changes adversely affecting the
operation of a project.
         Certain Bonds may have been acquired at a market discount from par
value at maturity. The interest rates on these bonds are lower than current
market interest rates for newly issued bonds of comparable rating and type.
Generally, if interest rates for newly issued comparable bonds increase, the
market discount of previously issued bonds will increase, and if interest rates
for newly issued comparable bonds decline, the market discount of previously
issued bonds will decrease. The value of bonds purchased at a market discount
will generally increase in value faster than bonds purchased at a market premium
if interest rates decrease. Conversely, if interest rates increase, the value of
bonds purchased at a market discount will generally decrease faster than bonds
purchased at a market premium. In addition, if interest rates rise, the
prepayment risk of higher yielding, premium bonds and the prepayment benefit for
lower yielding, discount bonds will be reduced. A bond purchased at a market
discount and held to maturity will have a larger portion of its total return in
the form of taxable income and capital gain and less in the form of tax-exempt
interest income than a comparable bond newly issued at current market rates. See
"Federal Tax Status." Market discount attributable to interest changes does not
indicate a lack of market confidence in the issue.
         Certain Bonds may be "original issue discount" bonds which were issued
with interest rates less than rates offered by comparable bonds and were
originally sold at a discount from their par value. These bonds may include
"zero coupon" bonds which are described below. In a stable interest rate
envronment, the market value of an original issue discount bond would tend to
increase more slowly in the early years and in greater increments as the bond
approached maturity. These bonds may be subject to redemption at prices based on
the issue price plus the amount of original issue discount accreted to
redemption plus some premium, if applicable. Under these call provisions, these
bonds may be called prior to maturity at a price less than par value. See
"Federal Tax Status" for a discussion of the tax consequenses of owning these
bonds.
         Certain Bonds may be "zero coupon" bonds. Zero coupon bonds are
purchased at a deep discount because the buyer receives only the right to
receive a final payment at the maturity of the bond and does not receive any
periodic interest payments. The effect of owning these bonds 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 bond. This implicit reinvestment of
earnings at the same rate eliminates the risk of being unable to reinvest income
at a rate as high as the implicit yield on the discount bond, but at the same
time eliminates the 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 bonds of
comparable quality which pay interest.
         Certain Bonds may have been purchased on a "when, as and if issued" or
"delayed delivery" basis. The delivery of these Bonds may be delayed or may not
occur. Interest on these Bonds begins accruing to the benefit of Unitholders on
their respective dates of delivery. To the extent any Bonds are actually
delivered to a Trust after the expected dates of delivery, Unitholders who
purchase their Units prior to the actual delivery date would be required to
adjust their tax basis in their Units for a portion of the interest accruing on
those Bonds during the interval between their purchase of Units and the actual
delivery of the Bonds. As a result of any adjustment, the Estimated Current
Return during the first year would be slightly lower than stated herein.
Unitholders will be "at risk" with respect to all Bonds (i.e., may derive either
gain or loss from fluctuations in the value of the Bonds) from the date they
order Units.
<PAGE>
         Certain Bonds may be subject to redemption prior to their stated
maturity date pursuant to sinking fund provisions, call provisions or
extraordinary optional or mandatory redemption provisions or otherwise. A
sinking fund is a reserve fund accumulated over a period of time for retirement
of debt. A callable bond is one which is subject to redemption or refunding
prior to maturity at the option of the issuer. A refunding is a method by which
a debt obligation is redeemed, at or before maturity, by the proceeds of a new
debt obligation. In general, call provisions are more likely to be exercised
when the bond price is at a premium over par than when it is at a discount from
par. The exercise of redemption or call provisions generally will 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. See "Portfolio" in Prospectus Part I for a list of the sinking fund and
call provisions, if any, with respect to the Bonds. The Sponsor is unable to
predict all of the circumstances which may result in redemption of a Bond.
         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 upon the Trusts. At any time after
the Date of Deposit, litigation may be initiated on a variety of grounds with
respect to the Bonds. Such litigation may affect the validity of the Bonds or
the tax-free nature of interest payments. While the outcome of litigation can
never be predicted, the Fund has received or will receive opinions of bond
counsel to the issuers of each Bond on the date of issuance to the effect that
the Bonds have been validly issued and interest payments are exempt from Federal
income tax. In addition, other factors may arise from time to time which
potentially may impair the ability of issuers to meet obligations undertaken
with respect to the Bonds.
         Like other investment companies, financial and business organizations
and individuals around the world, the Trusts could be adversely affected if the
computer systems used by the Sponsor, Evaluator or Trustee or other service
providers to the Trusts do not properly process and calculate date-related
information and data from and after January 1, 2000. This is commonly known as
the "Year 2000 Problem." While the Sponsor, Evaluator and Trustee are taking
steps that they believe are reasonably designed to address the Year 2000
Problem, there can be no assurance that these steps will be sufficient to avoid
any adverse impact to the Trusts. The Year 2000 Problem may impact certain
issuers of the Bonds to varying degrees, however, the Sponsor is unable to
predict what impact, if any, the Year 2000 Problem will have on any issuer.

ESTIMATED CURRENT AND LONG-TERM RETURNS
- --------------------------------------------------------------------------------

         The Estimated Current Returns and the Estimated Long-Term Returns as of
the Date of Deposit are set forth on the cover of the Prospectus Part I.
Estimated Current Return is calculated by dividing the estimated net annual
interest income per Unit by the Public Offering Price. The estimated net annual
interest income per Unit will vary with changes in fees and expenses of the
Trust and with the principal prepayment, redemption, maturity, exchange or sale
of Bonds. The Public Offering Price will vary with changes in the price of the
Bonds. Accordingly, there is no assurance that the present Estimated Current
Return will be realized in the future. Estimated Long-Term Return is calculated
using a formula which (1) takes into consideration, and determines and factors
in the relative weightings of, the market values, yields (which takes into
account the amortization of premiums and the accretion of discounts) and
estimated retirements of the Bonds and (2) takes into account the expenses and
sales charge associated with Units. Since the value and estimated retirements of
the Bonds and the expenses of a Trust will change, there is no assurance that
the present Estimated Long-Term Return will be realized in the future. The
Estimated Current Return and Estimated Long-Term Return are expected to differ
because the calculation of Estimated Long-Term Return reflects the estimated
date and amount of principal returned while the Estimated Current Return
calculation includes only net annual interest income and Public Offering Price.
         In order to acquire certain Bonds, it may be necessary for the Sponsor
or Trustee to pay amounts covering accrued interest on the Bonds which exceed
the amounts which will be made available through cash furnished by the Sponsor
on the Date of Deposit. This cash may exceed the interest which would accrue to
the First Settlement Date. The Trustee has agreed to pay for any amounts
necessary to cover any excess and will be reimbursed when funds become available
from interest payments on the related Bonds. Also, since interest on any "when,
as and if issued" Bonds does not begin accruing as tax-exempt interest income to
the benefit of Unitholders until the date of delivery, the Trustee may reduce
its fee and pay Trust expenses in order to maintain or approach the same
estimated net annual interest income during the first year of the Trust's
operations as described under "Summary of Essential Financial Information" in
Prospectus Part I.
<PAGE>
PUBLIC OFFERING
- --------------------------------------------------------------------------------

         GENERAL. Units are offered at the Public Offering Price. During the
initial offering period the Public Offering Price is based on the aggregate
offering price of the Bonds, the sales charge described below, cash, if any, in
the Principal Account and accrued interest, if any. After the initial public
offering period, the secondary market public offering price is based on the bid
prices of the Bonds, the sales charge described below, cash, if any, in the
Principal Account and accrued interest, if any. The minimum purchase in the
primary and secondary market is one Unit.
         The initial offering period sales charges are as follows:
<TABLE>
<CAPTION>
                                                                   INITIAL OFFERING PERIOD SALES CHARGE
                                                                               AS PERCENT OF
                                                                  --------------------------------------
                                                                       PUBLIC OFFERING    OFFERING PRICE
  TRUST                                                                      PRICE            OF BONDS
 -------------------------------------------------------------------------------------------------------
<S>                                                                          <C>                <C>
  IM-IT, U.S. Territorial IM-IT, Long-Term State and National 
    Quality Trusts                                                           4.900%             5.152%
  IM-IT Limited Maturity Trusts                                              4.300              4.493
  IM-IT Discount Trusts                                                      4.000              4.167
  IM-IT Intermediate Trusts                                                  3.900              4.058
  State Intermediate Laddered Maturity Trusts                                3.000              3.093
  IM-IT Short Intermediate Trusts                                            2.000              2.041
</TABLE>
         The sales charge applicable to quantity purchases during the initial
offering period is reduced as follows:
<TABLE>
<CAPTION>
                                                              SALES CHARGE REDUCTION PER UNIT
                                    -----------------------------------------------------------------------------------
                                        IM-IT, U.S.
                                    TERRITORIAL IM-IT,
                                      LONG-TERM STATE
        AGGREGATE NUMBER OF            AND NATIONAL              IM-IT SHORT              IM-IT
         UNITS PURCHASED*             QUALITY TRUSTS         INTERMEDIATE TRUST      DISCOUNT TRUST       OTHER TRUSTS
- -----------------------------       --------------------    --------------------    ----------------      -------------
<S>                                    <C>                       <C>                   <C>                 <C>
100-249 Units                          $      4.00               $     2.00            $    2.00           $    4.00
250-499 Units                          $      6.00               $     3.00            $    4.00           $    6.00
500-999 Units                          $     14.00               $     4.00            $    6.00           $    9.00
1,000 or more Units                    $     19.00               $     6.00            $    8.00           $   11.00
- -----------------------------
</TABLE>
         * The breakpoint sales charges are also applied on a dollar basis
utilizing a breakpoint equivalent in the above table of $1,000 per Unit and will
be applied on whichever basis is more favorable to the investor. The breakpoints
will be adjusted to take into consideration purchase orders stated in dollars
which cannot be completely fulfilled due to the Trusts' requirement that only
whole Units be issued.

         The secondary market sales charge is computed as described in the
following table based upon the estimated long-term return life of a Trust's
portfolio:
<TABLE>
<CAPTION>
 YEARS TO MATURITY    SALES CHARGE     YEARS TO MATURITY       SALES CHARGE   YEARS TO MATURITY      SALES CHARGE
 -----------------    ------------     -----------------       ------------   -----------------      ------------
<S>                   <C>              <C>                     <C>            <C>                    <C>
  1                   1.010%            8                      3.627%         15                     5.042%
  2                   1.523             9                      4.167          16                     5.152
  3                   2.041            10                      4.384          17                     5.263
  4                   2.302            11                      4.603          18                     5.374
  5                   2.564            12                      4.712          19                     5.485
  6                   2.828            13                      4.822          20                     5.597
  7                   3.093            14                      4.932          21 to 30               5.708
</TABLE>
<PAGE>
         For purposes of computation of the estimated long-term return life,
Bonds will be deemed to mature on their expressed maturity dates unless: (a) the
Bonds have been called for redemption or are subject to redemption at an earlier
call date, in which case this call date will be deemed to be the maturity date;
or (b) the Bonds are subject to a "mandatory tender", in which case the
mandatory tender will be deemed to be the maturity date. The sales charges in
the above table are expressed as a percentage of the aggregate bid prices of the
Bonds. Expressed as a percent of the Public Offering Price, the sales charge on
a Trust consisting entirely of Bonds with 15 years to maturity would be 4.80%.
The sales charges in the table above do not apply to IM-IT Discount Trusts. The
applicable secondary market sales charges for an IM-IT Discount Trust are set
forth in the applicable Prospectus Part I.
         Any reduced sales charge is the responsibility of the selling
Underwriter, broker, dealer or agent. The Sponsor will, however, increase the
concession or agency commission for quantity purchases. The reduced sales charge
structure in the initial offering period sales charge table above will apply on
all purchases by the same person from any one Underwriter or dealer of units of
Van Kampen American Capital-sponsored unit investment trusts which are being
offered in the initial offering period (a) on any one day (the "Initial Purchase
Date") or (b) on any day subsequent to the Initial Purchase Date, if (1) the
units purchased are of a unit investment trust purchased on the Initial Purchase
Date, and (2) the person purchasing the units purchased a sufficient amount of
units on the Initial Purchase Date to qualify for a reduced sales charge on such
date. In the event units of more than one trust are purchased on the Initial
Purchase Date, the aggregate dollar amount of such purchases will be used to
determine whether purchasers are eligible for a reduced sales charge. Such
aggregate dollar amount will be divided by the public offering price per unit
(on the day preceding the date of purchase) of each respective trust purchased
to determine the total number of units which such amount could have purchased of
each individual trust. Purchasers must then consult the applicable trust's
prospectus to determine whether the total number of units which could have been
purchased of a specific trust would have qualified for a reduced sales charge
and, if so qualified, the amount of such reduction. Assuming a purchaser
qualifies for a sales charge reduction or reductions, to determine the
applicable sales charge reduction or reductions it is necessary to accumulate
all purchases made on the Initial Purchase Date and all purchases made in
accordance with (b) above. Units purchased in the name of the spouse of a
purchaser or in the name of a child of such purchaser ("immediate family
members") will be deemed for the purposes of calculating the applicable sales
charge to be additional purchases by the purchaser. The reduced sales charges
will also be applicable to a trustee or other fiduciary purchasing Units for one
or more trust, estate or fiduciary accounts.
         Employees, officers and directors (including their spouses, children,
grandchildren, parents, grandparents, siblings, mothers-in-law, fathers-in-law,
sons-in-law and daughters-in-law, and trustees, custodians or fiduciaries for
the benefit of such persons (collectively referred to herein as "related
purchasers")) of Van Kampen American Capital Distributors, Inc. and its
affiliates and Underwriters and their affiliates may purchase Units at the
Public Offering Price less the applicable underwriting commission or less the
applicable dealer concession in the absence of an underwriting commission.
Employees, officers and directors (including related purchasers) of dealers and
their affiliates and vendors providing services to the Sponsor may purchase
Units at the Public Offering Price less the applicable dealer concession.
         Purchasers of units of any two consecutive series of a Trust may
aggregate purchases of units of such series for purposes of the sales charge
reduction for quantity purchases, provided that at the time of the initial
purchase of units such purchaser submitted a purchase order for at least 100
units that was partially unfulfilled due to a lack of units of such Trust series
available for sale at such time. The sales charge reduction shall be applied to
the subsequent purchase of units such that the aggregate sales charge reduction
applicable to both purchases will equal the amount described in the initial
offering period sales charge table above.
         Units may be purchased in the primary or secondary market at the Public
Offering Price (for purchases which do not qualify for a sales charge reduction
for quantity purchases) less the concession the Sponsor typically allows to
brokers and dealers for purchases by (1) investors who purchase Units through
registered investment advisers, certified financial planners and registered
broker-dealers who in each case either charge periodic fees for financial
planning, investment advisory or asset management services, or provide such
services in connection with the establishment of an investment account for which
a comprehensive "wrap fee" charge is imposed, (2) bank trust departments
investing funds over which they exercise exclusive discretionary investment
authority and that are held in a fiduciary, agency, custodial or similar
capacity, (3) any person who for at least 90 days, has been an officer, director
or bona fide employee of any firm offering Units for sale to investors or their
immediate family members (as described above) and (4) officers and directors of
bank holding companies that make Units available directly or through
subsidiaries or bank affiliates. Notwithstanding anything to the contrary in
this Prospectus, such investors, bank trust departments, firm employees and bank
holding company officers and directors who purchase Units through this program
will not receive sales charge reductions for quantity purchases.
<PAGE>
         OFFERING PRICE. The Public Offering Price of Units will vary from the
amounts stated under "Summary of Essential Financial Information" in Prospectus
Part I in accordance with fluctuations in the prices of the Bonds. The price of
Units on the Date of Deposit was determined by adding the applicable sales
charge to the aggregate offering price of the Bonds and dividing the sum by the
number of Units outstanding. This price determination was made on the basis of
an evaluation of the Bonds prepared by Interactive Data Corporation, a firm
regularly engaged in the business of evaluating, quoting or appraising
comparable securities. During the initial offering period, the Evaluator will
value the Bonds as of the Evaluation Time on days the New York Stock Exchange is
open for business and will adjust the Public Offering Price of Units
accordingly. This Public Offering Price will be effective for all orders
received at or prior to the Evaluation Time on each such day. The "Evaluation
Time" is the close of trading on the New York Stock Exchange on each day that
the Exchange is open for trading. Orders received by the Trustee, Sponsor or any
Underwriter for purchases, sales or redemptions after that time, or on a day
when the New York Stock Exchange is closed, will be held until the next
determination of price. The secondary market Public Offering Price per Unit will
be equal to the aggregate bid price of the Bonds plus the applicable secondary
market sales charge and dividing the sum by the number of Units outstanding. For
secondary market purposes, this computation will be made by the Evaluator as of
the Evaluation Time for each day on which any Unit is tendered for redemption
and as necessary. The offering price of Bonds may be expected to average
approximately 0.5%-1% more than the bid price.
         The aggregate price of the Bonds is determined on the basis of bid
prices or offering prices, as is appropriate, (a) on the basis of current market
prices obtained from dealers or brokers who customarily deal in bonds comparable
to those held by the Fund; (b) if these prices are not available, on the basis
of current market prices for comparable bonds; (c) by causing the value of the
Bonds to be determined by others engaged in the practice of evaluation, quoting
or appraising comparable bonds; or (d) by any combination of the above. Market
prices of the Bonds will generally fluctuate with changes in market interest
rates. Unless Bonds are in default in payment of principal or interest or in
significant risk of default, the Evaluator will not attribute any value to the
insurance obtained by an Insured Trust, if any.
         The Evaluator will consider in its evaluation of Bonds which are in
default in payment of principal or interest or, in the Sponsor's opinion, in
significant risk of default (the "Defaulted Bonds") the value of any insurance
guaranteeing interest and principal payments. The value of the insurance will be
equal to the difference between (i) the market value of Defaulted Bonds assuming
the exercise of the right to obtain Permanent Insurance (less the insurance
premiums and related expenses attributable to the purchase of Permanent
Insurance) and (ii) the market value of Defaulted Bonds not covered by Permanent
Insurance. In addition, the Evaluator will consider the ability of a Portfolio
Insurer to meet its commitments under any insurance policy, including
commitments to issue Permanent Insurance. No value has been ascribed to
insurance obtained by an Insured Trust, if any, as of the date of this
Prospectus.
         A person will become the owner of Units on the date of settlement
provided payment has been received. Cash, if any, made available to the Sponsor
prior to the date of settlement for the purchase of Units may be used in the
Sponsor's business and may be deemed to be a benefit to the Sponsor, subject to
the limitations of the Securities Exchange Act of 1934.
         ACCRUED INTEREST. Accrued interest is an accumulation of unpaid
interest on securities which generally is paid semi-annually, although each
Trust accrues interest daily. Because of this, a Trust always has an amount of
interest earned but not yet collected by the Trustee. For this reason, with
respect to sales settling after the First Settlement Date, the proportionate
share of accrued interest to the settlement date is added to the Public Offering
Price of Units. Unitholders will receive the amount of accrued interest paid on
their Units on the next distribution date. In an effort to reduce the accrued
interest which would have to be paid by Unitholders, the Trustee will advance
the amount of accrued interest to the Sponsor as the Unitholder of record as of
the First Settlement Date. Consequently, the accrued interest added to the
Public Offering Price of Units will include only accrued interest from the First
Settlement Date to the date of settlement, less any distributions from the
Interest Account after the First Settlement Date. Because of the varying
interest payment dates of the Bonds, accrued interest at any point in time will
be greater than the amount of interest actually received by a Trust and
distributed to Unitholders. If a Unitholder sells or redeems all or a portion of
his Units, he will be entitled to receive his proportionate share of the accrued
interest from the purchaser of his Units.
         UNIT DISTRIBUTION. Units will be distributed to the public by
Underwriters, broker-dealers and others at the Public Offering Price, plus
accrued interest. The Sponsor intends to qualify Units for sale in a number of
states. Broker-dealers or others will be allowed a concession or agency
commission in connection with the distribution of Units during the initial
offering period for any single transaction as described in the following table,
provided that the Units are acquired from the Sponsor.
<PAGE>
<TABLE>
<CAPTION>
                                            IM-IT, U.S.
                                            TERRITORIAL
                                           IM-IT, LONG-                                              IM-IT                STATE
                              IM-IT      TERM STATE AND     IM-IT SHORT             IM-IT          LIMITED         INTERMEDIATE
                           DISCOUNT            NATIONAL    INTERMEDIATE      INTERMEDIATE         MATURITY             LADDERED
                              TRUST      QUALITY TRUSTS           TRUST             TRUST            TRUST       MATURITY TRUST
                        -----------      --------------    ------------       -----------      -----------       --------------
<S>                     <C>                 <C>             <C>               <C>              <C>               <C>           
  1 - 99 Units          $     18.00         $     30.00     $     10.00       $     25.00      $     27.00       $        20.00
  100 - 249 Units       $     19.00         $     32.00     $     11.00       $     28.00      $     30.00       $        21.00
  250 - 499 Units       $     20.00         $     34.00     $     11.00       $     27.00      $     30.00       $        21.00
  500 - 999 Units       $     20.00         $     35.00     $     12.00       $     30.00      $     32.00       $        23.00
  1,000 - 1,499 Units   $     20.00         $     34.00     $     12.00       $     29.00      $     29.00       $        22.00
  1,500 or more Units   $     20.00         $     34.00     $     12.00       $     29.00      $     29.00       $        22.00
</TABLE>
         The increased concession or agency commission is a result of the
discount given to purchasers for quantity purchases. See "Public
Offering--General". In addition to the concessions and agency commissions
described in the table, volume concessions or agency commissions of an
additional $5.00 per Unit of an IM-IT, a U.S. Territorial IM-IT, a Long-Term
State or a National Quality Trust and $2.00 per Unit of all other Trusts will be
given to any broker/dealer or agent (other than Underwriters) who purchases from
the Sponsor at least 250 Units of such Trust during the initial offering period.
These additional concessions will be allowed at the time of purchase, provided,
however, the additional concession applicable to initial purchases totaling less
than 250 Units will be paid retroactively at the end of the initial offering
period. The breakpoint concessions or agency commissions are also applied on a
dollar basis utilizing a breakpoint equivalent of $1,000 per Unit and will be
applied on whichever basis is more favorable to the distributor. The breakpoints
will be adjusted to take into consideration purchase orders stated in dollars
which cannot be completely fulfilled due to the requirement that only whole
Units be issued. Certain commercial banks may be making Units available to their
customers on an agency basis. A portion of the sales charge paid by these
customers (equal to the agency commission referred to above) is retained by or
remitted to the banks. Any discount provided to investors will be borne by the
selling dealer or agent. For secondary market transactions, the concession or
agency commission will amount to 70% of the applicable sales charge. The Sponsor
reserves the right to reject, in whole or in part, any order for the purchase of
Units and to change the amount of the concession or agency commission to dealers
and others from time to time.
         SPONSOR AND UNDERWRITER COMPENSATION. The Underwriters will receive a
gross sales commission equal to the sales charge applicable to the transaction
involved. "Public Offering--General". The Sponsor will receive from the
Underwriters the excess of this gross sales commission over the amounts set
forth in the following table, as of the Date of Deposit. For a list of the
Underwriters that have purchased Units from the Sponsor, see "Underwriting" in
Prospectus Part I.
<TABLE>
<CAPTION>
                                               IM-IT, U.S.
                                               TERRITORIAL
                                              IM-IT, LONG-                                           IM-IT                STATE
                              IM-IT         TERM STATE AND   IM-IT SHORT            IM-IT          LIMITED         INTERMEDIATE
                           DISCOUNT               NATIONAL  INTERMEDIATE     INTERMEDIATE         MATURITY             LADDERED
                              TRUST         QUALITY TRUSTS         TRUST            TRUST            TRUST       MATURITY TRUST
                        -----------         --------------  ------------      -----------      -----------       --------------
<S>                     <C>                 <C>             <C>               <C>              <C>               <C>           
  1 - 99 Units          $     20.00         $     35.00     $     12.00       $     27.00      $     29.00       $        22.00
  100 - 249 Units       $     21.00         $     37.00     $     13.00       $     30.00      $     32.00       $        23.00
  250 - 499 Units       $     22.00         $     39.00     $     13.50       $     29.50      $     32.00       $        23.00
  500 - 999 Units       $     22.00         $     40.00     $     14.00       $     32.50      $     34.50       $        25.00
  1,000 - 1,499 Units   $     22.00         $     39.00     $     14.00       $     31.00      $     31.00       $        24.00
  1,500 or more Units   $     22.00         $     39.00     $     14.00       $     31.00      $     31.00       $        24.00
</TABLE>
         A. G. Edwards & Sons, Inc. which acts as a Managing Underwriter of
Units of the various series of the IM-IT or National Quality Trust, will receive
from the Sponsor reimbursement for certain costs and further compensation in the
amount of $5.00 for each Unit of the IM-IT or National Quality Trust it
underwrites. In addition, the Sponsor will receive from the Managing
Underwriters of any National Quality, (who underwrite 15% of the Trust involved
or 1,000 Units of such Trust, whichever is greater) the excess of such gross
sales commission over $38.00 per Unit of any such Trust, as of the Date of
Deposit. Also, any such Managing Underwriter that sells a total of 25% or 1,500
Units, whichever is greater, of any individual series of such Trusts will
receive an additional $2.00 per each such Unit. In connection with quantity
sales to purchasers of any Pennsylvania IM-IT Trust the Underwriters will
receive from the Sponsor commissions totalling $35.00 per Unit for any single
transaction of 100 to 249 Units, $36.00 per Unit for any single transaction of
250 to 499 units, $37.00 per Unit for any single transaction of 500 to 999 Units
and $38.00 per Unit for any single transaction of 1,000 or more Units. In
addition, any Underwriter that sells a total of 25% or 1,500 Units, whichever is
greater, of any Pennsylvania IM-IT Trust will receive an additional $2.00 per
each such Unit. In addition, the Sponsor has entered into agreements with
Advest, Inc. ("Advest") and Gruntal & Co., Inc. ("Gruntal") whereby Advest and
Gruntal will receive an additional $2.00 per Unit in connection with a minimum
commitment of 1,500 Units of any New York IM-IT Trust. In addition, the Sponsor
and J. J. B. Hilliard, W. L. Lyons, Inc. ("Hilliard, Lyons") have entered into
an agreement under which Hilliard, Lyons may receive an additional $2.00 for
each Unit of the Kentucky Quality Trust which it underwrites, provided it
underwrites a minimum of 400 Units of such Trust. Further, each Underwriter who
underwrites 1,000 or more Units in any Trust will receive additional
compensation from the Sponsor of $1.00 for each Unit it underwrites. The
breakpoints listed herein will also be applied on a dollar basis utilizing a
breakpoint equivalent of $1,000 per Unit and will be applied on whichever basis
is more favorable to the Underwriter.
<PAGE>
         In addition, the Sponsor and certain Underwriters will realize a profit
or loss, as a result of the difference between the price paid for the Bonds by
the Sponsor and the cost of the Bonds to a Trust. See "Portfolio" and "Notes to
Portfolio" in Prospectus Part I. Underwriters may also realize profits or losses
with respect to Bonds which were acquired by the Sponsor from underwriting
syndicates of which they were members. The Sponsor has not participated as sole
underwriter or as manager or as a member of the underwriting syndicates from
which the Bonds in the Trusts were acquired. Underwriters may further realize
profit or loss during the initial offering period as a result of possible
fluctuations in the market value of the Bonds since all proceeds received from
purchasers of Units (excluding dealer concessions or agency commissions allowed,
if any) will be retained by the Underwriters. Affiliates of an Underwriter are
entitled to the same dealer concessions or agency commissions that are available
to the Underwriter. In addition to any other benefits Underwriters may realize
from the sale of Units, the Sponsor will share on a pro rata basis among senior
Underwriters (those who underwrite at least 250 Units) 50% of any gain (less
deductions for accrued interest and certain costs) represented by the difference
between the cost of the Bonds to the Sponsor and the evaluation of the Bonds on
the Date of Deposit. The Sponsor and certain of the other Underwriters will also
realize profits or losses in the amount of any difference between the price at
which Units are purchased and the price at which Units are resold in connection
with maintaining a secondary market for Units and will also realize profits or
losses resulting from a redemption of repurchased Units at a price above or
below the purchase price.
         Underwriters and broker-dealers of the Trusts, banks and/or others are
eligible to participate in a program in which such firms receive from the
Sponsor a nominal award for each of their representatives who have sold a
minimum number of units of unit investment trusts created by the Sponsor during
a specified time period. In addition, at various times the Sponsor may implement
other programs under which the sales forces of such firms may be eligible to win
other nominal awards for certain sales efforts, or under which the Sponsor will
reallow to any such firms that sponsor sales contests or recognition programs
conforming to criteria established by the Sponsor, or participate in sales
programs sponsored by the Sponsor, an amount not exceeding the total applicable
sales charges on the sales generated by such persons at the public offering
price during such programs. Also, the Sponsor in its discretion may from time to
time pursuant to objective criteria established by the Sponsor pay fees to
qualifying firms for certain services or activities which are primarily intended
to result in sales of Units of the Trusts. Such payments are made by the Sponsor
out of its own assets, and not out of the assets of the Trusts. These programs
will not change the price Unitholders pay for their Units or the amount that the
Trusts will receive from the Units sold. Approximately every eighteen months the
Sponsor holds a business seminar which is open to Underwriters that sell units
of trusts it sponsors. The Sponsor pays substantially all costs associated with
the seminar, excluding Underwriter travel costs. Each Underwriter is invited to
send a certain number of representatives based on the gross number of units such
firm underwrites during a designated time period.
         MARKET FOR UNITS. Although not obligated to do so, the Sponsor intends
to, and certain of the other Underwriters may, maintain a market for Units and
offer to purchase Units at prices, subject to change at any time, based upon the
aggregate bid prices of the Bonds plus accrued interest and any principal cash
on hand, less any amounts representing taxes or other governmental charges
payable out of the Trust and less any accrued Trust expenses. If the supply of
Units exceeds demand or if some other business reason warrants it, the Sponsor
and/or the Underwriters may either discontinue all purchases of Units or
discontinue purchases of Units at these prices. If a market is not maintained
and the Unitholder cannot find another purchaser, a Unitholder will be able to
dispose of Units by tendering them to the Trustee for redemption at the
Redemption Price. See "Rights of Unitholders--Redemption of Units". A Unitholder
who wishes to dispose of his Units should inquire of his broker as to current
market prices in order to determine whether there is in any price in excess of
the Redemption Price and, if so, the amount thereof. 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 per Unit,
it may purchase the Units not later than the day on which the Units would
otherwise have been redeemed by the Trustee.
<PAGE>
RIGHTS OF UNITHOLDERS
- --------------------------------------------------------------------------------

         DISTRIBUTIONS OF INTEREST AND PRINCIPAL. Interest received by a Trust,
pro rated on an annual basis, will be distributed monthly unless a Unitholder
elects to receive semi-annual distributions. The amount and time of the first
distribution is described in Prospectus Part I under "Summary of Essential
Financial Information". The plan of distribution selected by a Unitholder will
remain in effect until changed. Unitholders who purchase Units in the secondary
market will receive distributions in accordance with the election of the prior
owner. Unitholders may change their distribution plan by indicating the change
on a card which may be obtained from the Trustee and return the card to the
Trustee with their certificates and other documentation required by the Trustee.
Certificates should be sent by registered or certified mail to avoid their being
lost or stolen. If the card and certificate are properly presented to the
Trustee, the change will become effective on the first day after the next
semi-annual record date and will remain effective until changed.
         Interest received by a Trust, including that part of the proceeds of
any disposition of Bonds which represents accrued interest, is credited by the
Trustee to the Interest Account. Other receipts are credited to the Principal
Account. After deduction of amounts sufficient to reimburse the Trustee, without
interest, for any amounts advanced and paid to the Sponsor as the Unitholder of
record as of the First Settlement Date, interest received will be distributed on
each distribution date to Unitholders of record as of the preceding record date.
All distributions will be net of estimated expenses. Funds in the Principal
Account will be distributed on each semi-annual distribution date to Unitholders
of record as of the preceding semi-annual record date. The Trustee is not
required to pay interest on funds held in the Principal or Interest Account (but
may itself earn interest thereon and therefore benefits from the use of these
funds) nor to make a distribution from the Principal Account unless the amount
available for distribution therein shall equal at least $1.00 per Unit. However,
should the amount available for distribution in the Principal Account equal or
exceed $10.00 per Unit, the Trustee will make a special distribution from the
Principal Account on the next monthly distribution date to Unitholders of record
on the related monthly record date.
         Because interest payments are not received by a Trust at a constant
rate throughout the year, interest distributions may be more or less than the
amount credited to the Interest Account as of the record date. For the purpose
of minimizing fluctuations in interest distributions, the Trustee is authorized
to advance amounts necessary to provide interest distributions of approximately
equal amounts. The Trustee is reimbursed for these advances from funds in the
Interest Account on the next record date. Persons who purchase Units between a
record date and a distribution date will receive their first distribution on the
second distribution date after the purchase, under the applicable plan of
distribution.
         REINVESTMENT OPTION. Unitholders may elect to have distributions on
their Units automatically reinvested in shares of certain Van Kampen American
Capital or Morgan Stanley mutual funds which are registered in the Unitholder's
state of residence (the "Reinvestment Funds"). Each Reinvestment Fund has
investment objectives that differ from those of the Trusts. The prospectus
relating to each Reinvestment Fund describes its investment policies and the
procedures to follow to begin reinvestment. A Unitholder may obtain a prospectus
for the Reinvestment Funds from Van Kampen American Capital Distributors, Inc.
at One Parkview Plaza, Oakbrook Terrace, Illinois 60181.
         After becoming a participant in a reinvestment plan, each Trust
distribution will automatically be applied on the applicable distribution date
to purchase shares of the applicable Reinvestment Fund at a net asset value
computed on such date. Unitholders with an existing Guaranteed Reinvestment
Option (GRO) Program account (whereby a sales charge is imposed on distribution
reinvestments) may transfer their existing account into a new GRO account which
allows purchases of Reinvestment Fund shares at net asset value. Confirmations
of all reinvestments will be mailed to the Unitholder by the Reinvestment Fund.
A participant may elect to terminate his or her reinvestment plan and receive
future distributions in cash by notifying the Trustee in writing at least five
days before the next distribution date. Each Reinvestment Fund, its sponsor and
investment adviser have the right to terminate its reinvestment plan at any
time. Unitholders of New York Trusts who are New York residents may elect to
have distributions reinvested in shares of First Investors New York Insured Tax
Free Fund, Inc. subject to a sales charge of $1.50 per $100 reinvested (paid to
First Investors Management Company, Inc.).
         REDEMPTION OF UNITS. A Unitholder may redeem all or a portion of his
Units by tender to the Trustee, at its Unit Investment Trust Division, 101
Barclay Street, 20th Floor, New York, New York 10286, of the certificates
representing the Units to be redeemed, duly endorsed or accompanied by proper
instruments of transfer with signature guaranteed (or by providing satisfactory
indemnity, such as in connection with lost, stolen or destroyed certificates)
and by payment of applicable governmental charges, if any. Redemption of Units
cannot occur until certificates representing the Units or satisfactory indemnity
have been received by the Trustee. No later than seven calendar days following
satisfactory tender, the Unitholder will receive an amount for each Unit equal
to the Redemption Price per Unit next computed after receipt by the Trustee of
the tender of Units. The "date of tender" is deemed to be the date on which
Units are received by the Trustee, except that as regards Units received after
the Evaluation Time on days of trading on the New York Stock Exchange, the date
of tender is the next day on which that Exchange is open and the Units will be
deemed to have been tendered to the Trustee on that day for redemption at the
Redemption Price.
<PAGE>
         Under Internal Revenue Service regulations, the Trustee is required to
withhold a specified percentage of a Unit redemption if the Trustee has not
received the Unitholder's tax identification number as required by such
regulations. Any amount withheld is transmitted to the Internal Revenue Service
and may be recovered by the Unitholder only when filing a return. Under normal
circumstances the Trustee obtains the Unitholder's tax identification number
from the selling broker. However, at any time a Unitholder elects to tender
Units for redemption, the Unitholder should provide a tax identification number
to the Trustee in order to avoid this possible "back-up withholding".
         The Redemption Price per Unit (as well as the secondary market Public
Offering Price) will be determined on the basis of the bid price of the Bonds as
of the Evaluation Time on days of trading on the New York Stock Exchange on the
date any such determination is made. The Evaluator determines the Redemption
Price per Unit on days Units are tendered for redemption. The Redemption Price
per Unit is the pro rata share of each Unit on the basis of (i) the cash on hand
in the Trust or moneys in the process of being collected, (ii) the value of the
Bonds based on the bid prices of the Bonds, except for cases in which the value
of insurance has been included, (iii) accrued interest, less (a) amounts
representing taxes or other governmental charges and (b) the accrued Trust
expenses. The Evaluator may determine the value of the Bonds by employing any of
the methods set forth in "Public Offering--Offering Price". In determining the
Redemption Price per Unit no value will be assigned to the portfolio insurance
maintained on the Bonds in an Insured Trust unless the Bonds are in default in
payment of principal or interest or in significant risk of default. For a
description of the situations in which the Evaluator may value the insurance
obtained by the Insured Trusts, see "Public Offering--Offering Price". Accrued
interest paid on redemption shall be withdrawn from the Interest Account or, if
the balance therein is insufficient, from the Principal Account. All other
amounts will be withdrawn from the Principal Account. Units so redeemed shall be
cancelled.
         The price at which Units may be redeemed could be less than the price
paid by the Unitholder and may be less than the par value of the Bonds
represented by the Units redeemed. The Trustee may sell Bonds to cover
redemptions. When Bonds are sold, the size and diversity of the Trust will be
reduced. 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 right of redemption may be suspended and payment postponed for any
period during which the New York Stock Exchange is closed, other than for
customary weekend and holiday closings, or during which the SEC determines that
trading on that Exchange is restricted or an emergency exists, as a result of
which disposal or evaluation of the Bonds is not reasonably practicable, or for
other periods as the SEC may by order permit. Under certain extreme
circumstances the Sponsor may apply to the SEC for an order permitting a full or
partial suspension of the right of Unitholders to redeem their Units.
         CERTIFICATES. Ownership of Units is evidenced by certificates unless a
Unitholder makes a written request to the Trustee that ownership be in book
entry form. Units are transferable by making a written request to the Trustee
and, in the case of Units in certificate form, by presentation and surrender of
the certificate to the Trustee properly endorsed or accompanied by a written
instrument or instruments of transfer. A Unitholder must sign the written
request, or certificate transfer instrument, exactly as his name appears on the
records of the Trustee and on the face of any certificate with the signature
guaranteed by a participant in the Securities Transfer Agents Medallion Program
("STAMP") or a signature guaranty program accepted by the Trustee. 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. Certificates will be issued in denominations of one Unit
or any multiple thereof. Although no such charge is now made, the Trustee may
require a Unitholder to pay a reasonable fee for each certificate re-issued or
transferred and to pay any governmental charge that may be imposed in connection
with each transfer or interchange. Destroyed, stolen, mutilated or lost
certificates will be replaced upon delivery to the Trustee of satisfactory
indemnity, evidence of ownership and payment of expenses incurred. Mutilated
certificates must be surrendered to the Trustee for replacement.
         REPORTS PROVIDED. Unitholders will receive a statement of interest and
other receipts received for each distribution. For as long as the Sponsor deems
it to be in the best interest of Unitholders, the accounts of each Trust will be
audited annually by independent certified public accountants and the report of
the accountants will be furnished to Unitholders upon request. Within a
reasonable period of time after the end of each year, the Trustee will furnish
to each person who was a registered Unitholder during that year a statement
describing the interest and principal received on the Bonds, actual Trust
distributions, Trust expenses, a list of the Bonds and other Trust information.
Unitholders will be furnished the Evaluator's evaluations of the Bonds upon
request.
<PAGE>
INSURANCE ON THE BONDS IN THE INSURED TRUSTS
- --------------------------------------------------------------------------------

         Insurance has been obtained guaranteeing prompt payment of interest and
principal, when due, in respect of the Bonds in each Insured Trust. An insurance
policy obtained by an Insured Trust, if any, is non-cancellable and will
continue in force so long as the Trust is in existence, the respective Portfolio
Insurer is still in business and the Bonds described in the policy continue to
be held by the Trust. Any portfolio insurance premium for an Insured Trust is
paid by the Trust on a monthly basis. The premium for any Preinsured Bond
insurance has been paid by the issuer, by a prior owner of the Bonds or the
Sponsor and any policy is non-cancellable and will continue in force so long as
the Bonds so insured are outstanding and the Preinsured Bond Insurer remains in
business. The Portfolio Insurers and the Preinsured Bond Insurers are described
in "Portfolio" and the notes thereto in Prospectus Part I. The Portfolio
Insurers are either AMBAC Assurance Corporation or Financial Guaranty Insurance
Company. More detailed information regarding insurance on the Bonds and the
Preinsured Bond and Portfolio Insurers is included in the Information
Supplement. See "Additional Information".
         The portfolio insurance obtained by an Insured Trust, if any,
guarantees the timely payment of principal and interest on the Bonds when they
fall due. For this purpose, "when due" generally means the stated payment or
maturity date for the payment of principal and interest. However, in the event
(a) an issuer defaults in the payment of principal or interest, (b) an issuer
enters into a bankruptcy proceeding or (c) the maturity of the Bond is
accelerated, the affected Portfolio Insurer has the option to pay the
outstanding principal amount of the Bond plus accrued interest to the date of
payment and thereby retire the Bond from the Trust prior to the Bond's stated
maturity date. The insurance does not guarantee the market value of the Bonds or
the value of the Units. The Trustee, upon the sale of a Bond covered under a
portfolio insurance policy has the right to obtain permanent insurance with
respect to the Bond (i.e., insurance to maturity of the Bond regardless of the
identity of the holder) (the "Permanent Insurance") upon the payment of a single
predetermined insurance premium and expenses from the proceeds of the sale of
the Bond. It is expected that the Trustee would exercise the right to obtain
Permanent Insurance only if upon exercise the Trust would receive net proceeds
in excess of the sale proceeds if the Bonds were sold on an uninsured basis.
         The following summary information relating to the listed insurance
companies has been obtained from publicly available information:
<TABLE>
<CAPTION>
                                                                        FINANCIAL INFORMATION (IN MILLIONS OF DOLLARS)
                                                                      -------------------------------------------------
                                                                          ADMITTED              POLICYHOLDERS'
                           NAME                                            ASSETS                   SURPLUS
  ---------------------------------------------------------------------------------------------------------------------
<S>                                                                       <C>                     <C>      
  AMBAC Assurance Corporation (at 6/30/97)                                $  2,736                $   1,548
  Capital Markets Assurance Corporation (at 9/30/97)                           351                      192
  Financial Guaranty Insurance Company (at 9/30/97)                          2,531                    1,247
  Financial Security Assurance, Inc. (at 9/30/97)                            1,404                      517
  MBIA Insurance Corporation (at 9/30/97)                                    5,100                    1,700
</TABLE>

         Because the Bonds are insured by Portfolio Insurers or Preinsured Bond
Insurers as to the timely payment of principal and interest, when due, and on
the basis of the various reinsurance agreements in effect, Standard & Poor's has
assigned to the Units of each Insured Trust its "AAA" investment rating. This
rating will be in effect for a period of thirteen months from the Date of
Deposit and will, unless renewed, terminate at the end of such period. See
"Description of Ratings" in the Information Supplement. This rating should not
be construed as an approval of the offering of the Units by Standard & Poor's or
as a guarantee of the market value of the Trust or of the Units.
         Each Portfolio Insurer is subject to regulation by the department of
insurance in the state in which it is qualified to do business. Such regulation,
however, is no guarantee that each Portfolio Insurer will be able to perform on
its contract of insurance in the event a claim should be made. At the date
hereof, it is reported that no claims have been submitted or are expected to be
submitted to any of the Portfolio Insurers which would materially impair the
ability of any such company to meet its commitment pursuant to any contract of
insurance. The information relating to each Portfolio Insurer has been furnished
by such companies. The financial information with respect to each Portfolio
Insurer appears in reports filed with state insurance regulatory authorities and
is subject to audit and review by such authorities. No representation is made
herein as to the accuracy or adequacy of such information or as to the absence
of material adverse changes in such information subsequent to the dates thereof.
<PAGE>


FUND ADMINISTRATION
- --------------------------------------------------------------------------------

         SPONSOR. Van Kampen American Capital Distributors, Inc., a Delaware 
corporation, is the Sponsor of the Trust. The Sponsor is an indirect subsidiary
of VK/AC Holding, Inc. VK/AC Holding, Inc. is a wholly owned subsidiary of MSAM
Holdings II, Inc., which in turn is a wholly owned subsidiary of Morgan Stanley,
Dean Witter, Discover & Co. ("MSDWD").
         MSDWD is a global financial services firm with a market capitalization
of more than $21 billion, which was created by the merger of Morgan Stanley
Group Inc. with Dean Witter, Discover & Co. on May 31, 1997. MSDWD, together
with various of its directly and indirectly owned subsidiaries, is engaged in a
wide range of financial services through three primary businesses: securities,
asset management and credit services. These principal businesses include
securities underwriting, distribution and trading; merger, acquisition,
restructuring and other corporate finance advisory activities; merchant banking;
stock brokerage and research services; asset management; trading of futures,
options, foreign exchange commodities and swaps (involving foreign exchange,
commodities, indices and interest rates); real estate advice, financing and
investing; global custody, securities clearance services and securities lending;
and credit card services. As of June 2, 1997, MSDWD, together with its
affiliated investment advisory companies, had approximately $270 billion of
assets under management, supervision or fiduciary advice.
         Van Kampen American Capital Distributors, Inc. specializes in the
underwriting and distribution of unit investment trusts and mutual funds with
roots in money management dating back to 1926. The Sponsor is a member of the
National Association of Securities Dealers, Inc. and has offices at One Parkview
Plaza, Oakbrook Terrace, Illinois 60181, (630) 684-6000 and 2800 Post Oak
Boulevard, Houston, Texas 77056, (713) 993-0500. It maintains a branch office in
Philadelphia and has regional representatives in Atlanta, Dallas, Los Angeles,
New York, San Francisco, Seattle and Tampa. As of November 30, 1996, the total
stockholders' equity of Van Kampen American Capital Distributors, Inc. was
$129,451,000 (unaudited). (This paragraph relates only to the Sponsor and not to
the Fund or to any other Series thereof. The information is included herein only
for the purpose of informing investors as to the financial responsibility of the
Sponsor and its ability to carry out its contractual obligations. More detailed
financial information will be made available by the Sponsor upon request.)
         As of March 31, 1997, the Sponsor and its Van Kampen American Capital
affiliates managed or supervised approximately $58.45 billion of investment
products, of which over $10.85 billion is invested in municipal bonds. The
Sponsor and its Van Kampen American Capital affiliates managed $47 billion of
assets, consisting of $29.23 billion for 59 open-end mutual funds (of which 46
are distributed by Van Kampen American Capital Distributors, Inc.) $13.4 billion
for 37 closed-end funds and $4.97 billion for 106 institutional accounts. The
Sponsor has also deposited approximately $26 billion of unit investment trusts.
All of Van Kampen American Capital's open-end funds, closed-ended funds and unit
investment trusts are professionally distributed by leading financial firms
nationwide. Based on cumulative assets deposited, the Sponsor believes that it
is the largest sponsor of insured municipal unit investment trusts, primarily
through the success of its Insured Municipals Income Trust(R) or the IM-IT(R)
trust. The Sponsor also provides surveillance and evaluation services at cost
for approximately $13 billion of unit investment trust assets outstanding. Since
1976, the Sponsor has serviced over two million investor accounts, opened
through retail distribution firms.
         If the Sponsor shall fail to perform any of its duties under the Trust
Agreement or become incapable of acting or become bankrupt or its affairs are
taken over by public authorities, then the Trustee may (i) appoint a successor
Sponsor at rates of compensation deemed by the Trustee to be reasonable and not
exceeding amounts prescribed by the SEC, (ii) terminate the Trust Agreement and
liquidate the Fund as provided therein or (iii) continue to act as Trustee
without terminating the Trust Agreement.
         TRUSTEE. The Trustee is The Bank of New York, a trust company organized
under the laws of New York. The Bank of New York has its unit investment trust
division offices at 101 Barclay Street, New York, New York 10286, telephone
(800) 221-7668. The Bank of New York is subject to supervision and examination
by the Superintendent of Banks of the State of New York and the Board of
Governors of the Federal Reserve System, and its deposits are insured by the
Federal Deposit Insurance Corporation to the extent permitted by law. Additional
information regarding the Trustee is set forth in the Information Supplement,
including the Trustee's qualifications and duties, its ability to resign, the
effect of a merger involving the Trustee and the Sponsor's ability to remove and
replace the Trustee. See "Additional Information".
         PORTFOLIO ADMINISTRATION. The Trusts are not managed funds and, except
as provided in the Trust Agreement, Bonds generally will not be sold or
replaced. The Sponsor may, however, direct that Bonds be sold in certain limited
situations to protect to the Trust based on advice from the Evaluator. These
situations may include default in interest or principal payments on the Bonds or
other obligations of an issuer, an advanced refunding or institution of certain
legal proceedings. In addition, the Trustee may sell Bonds designated by the
Evaluator for purposes of redeeming Units or payment of expenses. The Evaluator
will consider a variety of factors in designating Bonds to be sold including
interest rates, market value and marketability. Except in limited circumstances,
the Trustee must reject any offer by an issuer to issue bonds in exchange or
substitution for the Bonds (such as a refunding or refinancing plan). The
Trustee will promptly notify Unitholders of any exchange or substitution. The
Information Supplement contains a more detailed description of circumstances in
which Bonds may be sold or replaced. See "Additional Information".
<PAGE>
         REPLACEMENT BONDS. No assurance can be given that a Trust will retain
its present size or composition because Bonds may be sold, redeemed or mature
from time to time and the proceeds will be distributed to Unitholders and will
not be reinvested. In the event of a failure to deliver any Bond that has been
purchased under a contract ("Failed Bonds"), the Sponsor is authorized under the
Trust Agreement to direct the Trustee to acquire other bonds ("Replacement
Bonds") to make up the original portfolio of a Trust. Replacement Bonds must be
purchased within 20 days after delivery of the notice of the failed contract and
the purchase price (exclusive of accrued interest) may not exceed the amount of
funds reserved for the purchase of the Failed Bonds. The Replacement Bonds must
be substantially identical to the Failed Bonds in terms of (i) the exemption
from federal and state taxation, (ii) maturity, (iii) yield to maturity and
current return, (iv) Standard & Poor's or Moody's ratings, and (v) insurance in
an Insured Trust. The Trustee shall notify all Unitholders of a Trust within
five days after the acquisition of a Replacement Bond and shall make a pro rata
distribution of the amount, if any, by which the cost of the Failed Bond
exceeded the cost of the Replacement Bond plus accrued interest. If Failed Bonds
are not replaced, the Sponsor will refund the sales charge attributable to the
Failed Bonds to all Unitholders of the Trust and distribute the principal and
accrued interest (at the coupon rate of the Failed Bonds to the date of removal
from the Trust) attributable to the Failed Bonds within 30 days after removal.
All interest paid to a Unitholder which accrued after the expected date of
settlement for Units will be paid by the Sponsor and accordingly will not be
treated as tax-exempt income. If Failed Bonds are not replaced, the Estimated
Net Annual Interest Income per Unit would be reduced and the Estimated Current
Return and Estimated Long-Term Return might be lowered. Unitholders may not be
able to reinvest their proceeds in other securities at a yield equal to or in
excess of the yield of the Failed Bonds.
         AMENDMENT OF TRUST AGREEMENT. The Sponsor and the Trustee may amend the
Trust Agreement without the consent of Unitholders to correct any provision
which may be defective or to make other provisions that will not adversely
affect the interest of the Unitholders (as determined in good faith by the
Sponsor and the Trustee). The Trust Agreement may not be amended to increase the
number of Units or to permit the acquisition of Bonds in addition to or in
substitution for any of the Bonds initially deposited in the Trust, except for
the substitution of certain refunding Bonds. The Trustee will notify Unitholders
of any amendment.
         TERMINATION OF TRUST AGREEMENT. A Trust will terminate upon the
redemption, sale or other disposition of the last Bond held in the Trust. A
Trust may also be terminated at any time by consent of Unitholders of 51% of the
Units then outstanding or by the Trustee when the value of the Trust is less
than 20% of the original principal amount of Bonds. The Trustee will notify each
Unitholder of any termination within a reasonable time and will then liquidate
any remaining Bonds. The sale of Bonds upon termination may result in a lower
amount than might otherwise be realized if sale were not required at that time.
For this reason, among others, the amount realized by a Unitholder upon
termination may be less than the principal amount of Bonds per Unit or value at
the time of purchase. The Trustee will distribute to each Unitholder his share
of the balance of the Interest and Principal Accounts after deduction of costs,
expenses or indemnities. The Unitholder will receive a final distribution
statement with this distribution. When the Trustee in its sole discretion
determines that any amounts held in reserve are no longer necessary, it will
distribute these amounts to Unitholders. The Information Supplement contains
further information regarding termination of a Trust.
See "Additional Information".
         LIMITATION ON LIABILITIES. The Sponsor, Evaluator and Trustee shall be
under no liability to Unitholders for taking any action or for refraining from
taking any action in good faith pursuant to the Trust Agreement, or for errors
in judgment, but shall be liable only for their own willful misfeasance, bad
faith or gross negligence (negligence in the case of the Trustee) in the
performance of their duties or by reason of their reckless disregard of their
obligations and duties hereunder. 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 Trust
Agreement, the Trustee may act thereunder and shall not be liable for any action
taken by it in good faith under the Trust Agreement. The Trustee is not liable
for any taxes or governmental charges imposed on the Bonds, on it as Trustee
under the Trust Agreement or on the Fund 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 Trust Agreement
contains other customary provisions limiting the liability of the Trustee. The
Trustee and Sponsor may rely on any evaluation furnished by the Evaluator and
have no responsibility for the accuracy thereof. Determinations by the Evaluator
shall be made in good faith upon the basis of the best information available to
it; provided, however, that the Evaluator shall be under no liability to the
Trustee, Sponsor or Unitholders for errors in judgment.
<PAGE>
FEDERAL TAX STATUS
- --------------------------------------------------------------------------------

         At the respective times of issuance of the Bonds, opinions relating to
the validity thereof and to the exclusion of interest thereon from Federal gross
income 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. Neither the Sponsor nor Chapman and Cutler have made any review of
the Trust proceedings relating to the issuance of the Bonds or of the basis of
such opinions. If the interest on a Bond should be determined to be taxable, the
Bond would generally have to be sold at a substantial discount. In addition,
investors could be required to pay income tax on interest received prior to the
date on which interest is determined to be taxable. Gain realized on the sale or
redemption of the Bonds by the Trustee or of a Unit by a Unitholder is
includible in gross income for Federal income tax purposes and may be includible
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. If a Bond is acquired with accrued interest, that portion of the price paid
for the accrued interest is added to the tax basis of the Bond. When this
accrued interest is received, it is treated as a return of capital and reduces
the tax basis of the Bond. If a Bond is purchased for a premium, the amount of
the premium is added to the tax basis of the Bond. Bond premium is amortized
over the remaining term of the Bond, and the tax basis of the Bond is reduced
each tax year by the amount of the premium amortized in that tax year. For
purposes of the following opinions, it is assumed that each asset of the Trust
is debt, the interest on which is excluded for Federal income tax purposes.
         In the opinion of Chapman and Cutler, counsel for the Sponsor, under
          existing law as of the date of this Prospectus:
   (1)  Each Trust is not an association taxable as a corporation for Federal
        income tax purposes and interest and accrued original issue discount on
        Bonds which is excludable from gross income under the Internal Revenue
        Code of 1986 (the "Code") will retain its status for Federal income tax
        purposes, when received by a Trust and when distributed to Unitholders;
        however such interest may be taken into account in computing the
        alternative minimum tax, an additional tax on branches of foreign 
        corporations and the environmental tax (the "Superfund Tax"), as noted
        below;
   (2)  Each Unitholder is considered to be the owner of a pro rata portion of
        each asset of the respective Trust under subpart E, subchapter J of
        chapter 1 of the Code and will have a taxable event when such Trust
        disposes of a Bond, or when the Unitholder redeems or sells his Units.
        If the Unitholder disposes of a Unit, he is deemed thereby to have
        disposed of his entire pro rata interest in all assets of the Trust
        involved including his pro rata portion of all the Bonds represented by
        a Unit. Legislative proposals have been made that would treat certain
        transactions designed to reduce or eliminate risk of loss and
        opportunities for gain as constructive sales for purposes of recognition
        of gain (but not loss). Unitholders should consult their own tax
        advisors with regard to any such constructive sale rules. Unitholders
        must reduce the tax basis of their Units for their share of accrued
        interest received by the respective Trust, if any, on Bonds delivered
        after the Unitholders pay for their Units to the extent that such
        interest accrued on such Bonds before the date the Trust acquired
        ownership of the Bonds (and the amount of this reduction may exceed the
        amount of accrued interest paid to the seller) 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 on maturity, redemption or
        otherwise), gain or loss is recognized to the Unitholder (subject to
        various non-recognition provisions of the Code). 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
        accrued 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 valuation date nearest the
        date of acquisition of the Units. It should be noted that certain
        legislative proposals have been made which could affect the calculation
        of basis for Unitholders holding securities that are substantially
        identical to the Bonds. Unitholders should consult their own tax
        advisors with regard to the calculation of basis. The tax basis
        reduction requirements of the Code relating to amortization of bond
        premium may, under some circumstances, result in the Unitholder
        realizing a taxable gain when his Units are sold or redeemed for an
        amount less than or equal to his original cost;
   (3)  Any proceeds paid under an insurance policy or policies dated the Date
        of Deposit, issued to an Insured Trust with respect to the Bonds which
        represent 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 in the normal
        course by the issuer of the defaulted obligations provided that, at the
        time such policies are purchased, the amounts paid for such policies are
        reasonable, customary and consistent with the reasonable expectation
        that the issuer of the obligations, rather than the insurer, will pay
        debt service on the obligations; and
<PAGE>
   (4)  Any proceeds paid under individual policies obtained by issuers of Bonds
        which represent maturing interest on defaulted Bonds held by the Trustee
        will be excludable from Federal gross income if, and to the same extent
        as, such interest would have been excludable if paid in the normal
        course by the issuer of the defaulted Bonds provided that, at the time
        such policies are purchased, the amounts paid for such policies are
        reasonable, customary and consistent with the reasonable expectation
        that the issuer of the Bonds, rather than the insurer, will pay debt
        service on the Bonds.
         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") to prior owners. If a Bond is acquired with accrued interest, that
portion of the price paid for the accrued interest is added to the tax basis of
the Bond. When this accrued interest is received, it is treated as a return of
capital and reduces the tax basis of the Bond. If a Bond is purchased for a
premium, the amount of the premium is added to the tax basis of the Bond. Bond
premium is amortized over the remaining term of the Bond, and the tax basis of
the Bond is reduced each tax year by the amount of the premium amortized in that
tax year. 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. Unitholders should consult with their tax
advisers regarding these rules and their application.
         "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), subject to a statutory
de minimis rule. 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. The market discount rules are complex and Unitholders should
consult their tax advisers regarding these rules and their application.
         In the case of certain corporations, the alternative minimum tax and
the Superfund Tax for taxable years beginning after December 31, 1986 depends
upon the corporation's alternative minimum taxable income, which is the
corporation's taxable income with certain adjustments. One of the adjustment
items used in computing the alternative minimum taxable income 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
alternative minimum taxable income (before such adjustment item and the
alternative tax net operating loss deduction). "Adjusted current earnings"
includes all tax exempt interest, including interest on all of the Bonds in the
Fund. Under current Code provisions, the Superfund Tax does not apply to tax
years beginning on or after January 1, 1996. Legislative proposals have been
introduced which would extend the Superfund Tax. Under the provisions of Section
884 of the Code, a branch profits tax is levied on the "effectively connected
earnings and profits" of certain foreign corporations which include tax-exempt
interest such as interest on the Bonds in the Trust. Unitholders should consult
their tax advisers with respect to the particular tax consequences to them
including the corporate alternative minimum tax, the Superfund Tax and the
branch profits tax imposed by Section 884 of the Code.
         Counsel for the Sponsor has also advised that under Section 265 of the
Code, interest on indebtedness incurred or continued to purchase or carry Units
of a Trust is not deductible for Federal income tax purposes. The Internal
Revenue Service has taken the position that such indebtedness need not be
directly traceable to the purchase or carrying of Units (however, these rules
generally do not apply to interest paid on indebtedness incurred to purchase or
improve a personal residence). Also, under Section 265 of the Code, certain
financial institutions that acquire Units would generally not be able to deduct
any of the interest expense attributable to ownership of such Units. Legislative
proposals have been made that would extend the financial institution rules to
all corporations. Investors with questions regarding these issues should consult
their tax advisers.
         In the case of certain of the Bonds in the Fund, the opinions of bond
counsel indicate that interest on such Bonds received by a "substantial user" of
the facilities being financed with the proceeds of these Bonds, or persons
related thereto, for periods while such Bonds are held by such a user or related
person, will not be excludible from Federal gross income, although interest on
such Bonds received by others would be excludible from Federal gross income.
"Substantial user" and "related person" are defined under the Code and U.S.
Treasury Regulations. Any person who believes that he or she may be a
"substantial user" or a "related person" as so defined should contact his or her
tax adviser.
<PAGE>
         In the opinion of special counsel to the Fund for New York tax matters,
under existing law, the Fund and each Trust are not associations taxable as
corporations and the income of each Trust will be treated as the income of the
Unitholders under the income tax laws of the State and City of New York.
         All statements of law in the Prospectus concerning exclusion from gross
income for Federal, state or other tax purposes are the opinions of counsel and
are to be so construed.
         At the respective times of issuance of the Bonds, opinions relating to
the validity thereof and to the exclusion of interest thereon from Federal gross
income are rendered by bond counsel to the respective issuing authorities.
Neither the Sponsor nor Chapman and Cutler has made any special review for the
Fund of the proceedings relating to the issuance of the Bonds or of the basis
for such opinions.
         In the case of corporations, the alternative tax rate applicable to
long-term capital gains is 35%, effective for long-term capital gains realized
in taxable years beginning on or after January 1, 1993. For taxpayers other than
corporations, net capital gains (which are defined as net long-term capital gain
over net short-term capital loss for a taxable year) are subject to a maximum
marginal stated tax rate of 28%. 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. Under the Code, taxpayers must disclose to the Internal Revenue Service
the amount of tax-exempt interest earned during the year. For purposes of
computing the alternative minimum tax for individuals and corporations and the
Superfund Tax for corporations, interest on certain private activity bonds
(which includes most industrial and housing revenue bonds) issued on or after
August 8, 1996 is included as an item of tax preference. Except as otherwise
noted in Prospectus Part I, the Trusts do not include any such private activity
bonds issued on or after that date.
         Section 86 of the Code provides that 50% of Social Security benefits
are includible in gross income to the extent that the sum of "modified adjusted
gross income" plus 50% of the Social Security benefits received exceeds a "base
amount". The base amount is $25,000 for unmarried taxpayers, $32,000 for married
taxpayers filing a joint return and zero for married taxpayers who do not live
apart at all times during the taxable year and who file separate returns.
Modified adjusted gross income is adjusted gross income determined without
regard to certain otherwise allowable deductions and exclusions from gross
income and by including tax-exempt interest. To the extent that Social Security
benefits are includible in gross income, they will be treated as any other item
of gross income.
         In addition, under the Tax Act, for taxable years beginning after
December 31, 1993, up to 85% of Social Security benefits are includible in gross
income to the extent that the sum of "modified adjusted gross income" plus 50%
of Social Security benefits received exceeds an "adjusted base amount." The
adjusted base amount is $34,000 for unmarried taxpayers, $44,000 for married
taxpayers filing a joint return, and zero for married taxpayers who do not live
apart at all times during the taxable year and who file separate returns.
         Although tax-exempt interest is included in modified adjusted gross
income solely for the purpose of determining what portion, if any, of Social
Security benefits will be included in gross income, no tax-exempt interest,
including that received from a Trust, will be subject to tax. A taxpayer whose
adjusted gross income already exceeds the base amount or the adjusted base
amount must include 50% or 85%, respectively, of his Social Security benefits in
gross income whether or not he receives any tax-exempt interest. A taxpayer
whose modified adjusted gross income (after inclusion of tax-exempt interest)
does not exceed the base amount need not include any Social Security benefits in
gross income.
         Ownership of the Units may result in collateral federal income tax
consequences to certain taxpayers, including, without limitation, corporations
subject to either the environmental tax or the branch profits tax, financial
institutions, certain insurance companies, certain S corporations, individual
recipients of Social Security or Railroad Retirement benefits and taxpayers who
may be deemed to have incurred (or continued) indebtedness to purchase or carry
tax-exempt obligations. Prospective investors should consult their tax advisors
as to the applicability of any collateral consequences.
         For a discussion of the state tax status of income earned on Units of a
Trust and recent changes in Federal tax law, see Prospectus Part I. Except as
noted therein, the exemption of interest on state and local obligations for
Federal income tax purposes discussed above 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.
<PAGE>
EXPENSES
- -------------------------------------------------------------------------------

         The Sponsor will not receive any fees in connection with its activities
relating to the Fund. However, American Portfolio Evaluation Services, a
division of Van Kampen American Capital Investment Advisory Corp., which is an
affiliate of the Sponsor, will receive the annual supervisory fee indicated
under "Summary of Essential Financial Information" in Prospectus Part I for
providing portfolio supervisory services for the Fund. In addition, the
Evaluator will receive the annual evaluation fee indicated under "Summary of
Essential Financial Information" in Prospectus Part I for evaluating each
Trust's portfolio. These fees may exceed the actual costs of providing these
services for a Trust but the total amount received by the Evaluator for
providing these services to all Van Kampen American Capital unit investment
trusts will not exceed the total cost of providing the services in any calendar
year. For its services the Trustee will receive the fee indicated under "Summary
of Essential Financial Information" in Prospectus Part I (which may be reduced
as described therein). Part of the Trustee's compensation for its services is
expected to result from the use of the funds being held in the Principal and
Interest Accounts for future distributions, payment of expenses and redemptions
since these Accounts are non-interest bearing to Unitholders. These fees are
based on the outstanding principal amount of Bonds and Units on the Date of
Deposit for the first year and as of the close of business on January 1 for each
year thereafter.
         Premiums for any portfolio insurance are obligations of each Insured
Trust and are payable monthly by the Trustee on behalf of the Trust. As Bonds in
an Insured Trust are redeemed by their respective issuers or are sold by the
Trustee, the amount of the premium will be reduced in respect of those Bonds. If
the Trustee exercises the right to obtain permanent insurance, the premiums
payable for such permanent insurance will be paid solely from the proceeds of
the sale of the related Bonds.
         The following additional charges are or may be incurred by the Trusts:
(a) fees of the Trustee for extraordinary services, (b) expenses of the Trustee
(including legal and auditing expenses) and of counsel designated by the
Sponsor, (c) various governmental charges, (d) expenses and costs of any action
taken by the Trustee to protect the Trusts and the rights and interests of
Unitholders, (e) indemnification of the Trustee for any loss, liability or
expenses incurred by it in the administration of the Fund without negligence,
bad faith or willful misconduct on its part, (f) any special custodial fees
payable in connection with the sale of any of the Bonds in a Trust, (g)
expenditures incurred in contacting Unitholders upon termination of the Trusts
and (h) costs incurred to reimburse the Trustee for advancing funds to the
Trusts to meet scheduled distributions (which costs may be adjusted periodically
in response to fluctuations in short-term interest rates). The fees and expenses
set forth herein are payable out of the Trusts. When such fees and expenses are
paid by or owing to the Trustee, they are secured by a lien on the portfolio of
the applicable Trust. If the balances in the Interest and Principal Accounts are
insufficient to provide for amounts payable by a Trust, the Trustee has the
power to sell Bonds to pay such amounts.
         On or before the twenty-fifth day of each month, the Trustee will
deduct from the Interest Account and, to the extent funds are not sufficient
therein, from the Principal Account, amounts necessary to pay the expenses of
the Fund. The Trustee also may withdraw from these Accounts such amounts, if
any, as it deems necessary to establish a reserve for any governmental charges
payable out of the Fund. Amounts so withdrawn shall not be considered a part of
the Fund's assets until such time as the Trustee shall return all or any part of
such amounts to the appropriate Accounts. All costs and expenses incurred in
creating and establishing the Fund, including the cost of the initial
preparation, printing and execution of the Trust Agreement and the certificates,
legal and accounting expenses, advertising and selling expenses, expenses of the
Trustee, initial evaluation fees and other out-of-pocket expenses have been
borne by the Sponsor at no cost to the Fund.

ADDITIONAL INFORMATION
- -------------------------------------------------------------------------------

         This Prospectus does not contain all the information set forth in the
Registration Statement filed by the Fund with the SEC. The Information
Supplement, which has been filed with the SEC, includes more detailed
information concerning the Bonds, investment risks and general information about
the Fund. This Prospectus incorporates by reference the entire Information
Supplement. The Information Supplement may be obtained by contacting the Trustee
or is available along with other related materials at the SEC's Internet site
(http://www.sec.gov).

OTHER MATTERS
- -------------------------------------------------------------------------------

         LEGAL MATTERS. The legality of the Units offered hereby and certain
matters relating to Federal tax law have been passed upon by Chapman and Cutler,
111 West Monroe Street, Chicago, Illinois 60603, as counsel for the Sponsor.
Winston & Strawn has acted as counsel to the Trustee and Special counsel to the
Fund for New York tax matters. Special counsel to the Fund for certain state tax
matters are named under "Tax Status" appearing in Prospectus Part I.
         INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS. The statement of condition
and the related portfolio at the Date of Deposit included in Prospectus Part I
have been audited by Grant Thornton LLP, independent certified public
accountants, as set forth in their report in Prospectus Part I, and are included
herein in reliance upon the authority of said firm as experts in accounting and
auditing.
<PAGE>
                     TABLE OF CONTENTS
          TITLE                                    PAGE
   The Trusts                                         2
      The Fund                                        2
      Objectives and Bond Selection                   2
      Risk Factors                                    3
   Estimated Current and Long-Term Returns            5
   Public Offering                                    6
      General                                         6
      Offering Price                                  7
      Accrued Interest                                8
      Unit Distribution                               8
      Sponsor and Underwriter Compensation            9
      Market for Units                               10
   Rights of Unitholders                             11
      Distributions of Interest and Principal        11
      Reinvestment Option                            11
      Redemption of Units                            11
      Certificates                                   12
      Reports Provided                               12
   Insurance on the Bonds in the Insured Trusts      13
   Fund Administration                               14
      Sponsor                                        14
      Trustee                                        14
      Portfolio Administration                       14
      Replacement Bonds                              15
      Amendment of Trust Agreement                   15
      Termination of Trust Agreement                 15
      Limitation on Liabilities                      15
   Federal Tax Status                                16
   Expenses                                          18
   Additional Information                            19
   Other Matters                                     19
      Legal Matters                                  19
      Independent Certified Public Accountants       19

- ------------
   No person is authorized to give any information or to make any
representations not contained in this Prospectus; and any information or
representation not contained herein must not be relied upon as having been
authorized by the Fund, the Sponsor or the Underwriters. 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.

   This Prospectus contains information concerning the Fund and the Sponsor, but
does not contain all of the information set forth in the registration statements
and exhibits relating thereto, which the Fund has filed with the Securities and
Exchange Commission, Washington, D.C., under the Securities Act of 1933 and the
Investment Company Act of 1940, and to which reference is hereby made.
<PAGE>
                                   PROSPECTUS
                                     PART II




- -------------------------------------------------------------------------------

                                  FEBRUARY 1998



                               INSURED MUNICIPALS
                                  INCOME TRUST,
                              INSURED MULTI-SERIES

                                       AND

                               INSURED MUNICIPALS
                                INCOME TRUST AND
                             INVESTORS' QUALITY TAX-
                                  EXEMPT TRUST,
                                  MULTI-SERIES



          ------ A Wealth of Knowledge o Knowledge of Wealth(sm) ------
                           VAN KAMPEN AMERICAN CAPITAL



                               One Parkview Plaza
                        Oakbrook Terrace, Illinois 60181

                             2800 Post Oak Boulevard
                              Houston, Texas 77056
<PAGE>

                           Van Kampen American Capital

                             Information Supplement

   
Insured Municipals Income Trust, 229th Insured Multi-Series
    

- --------------------------------------------------------------------------------
   This Information  Supplement provides additional  information  concerning the
risks and  operations of the Fund which is not described in the  Prospectus  for
the Fund. This  Information  Supplement  should be read in conjunction  with the
Fund's  prospectus.  This  Information  Supplement  is not a prospectus  (but is
incorporated  into the  Prospectus  by  reference),  does not include all of the
information that an investor should consider before investing in a Trust and may
not be used to  offer  or sell  Units  without  the  Prospectus.  Copies  of the
Prospectus  can be obtained by  contacting  the Sponsor at One  Parkview  Plaza,
Oakbrook Terrace,  Illinois 60181 or by contacting your broker. This Information
Supplement  is  dated as of the date of  Prospectus  Part I and all  capitalized
terms have been defined in the Prospectus.

                                Table of Contents

   
                                                                      Page
   Municipal Bond Risk Factors.......................................    2
   Insurance on the Bonds in the Insured Trusts......................    6
   Portfolio Administration..........................................   12
   Trustee Information...............................................   13
   Termination of the Trust Agreement................................   13
   Description of Ratings............................................   14
   Equivalent Taxable Estimated Current Return Tables................   16
   Missouri Risk Factors.............................................   17
   New Jersey Risk Factors...........................................   19
   Estimated Cash Flows to Unitholders...............................   23
    

                           Municipal Bond Risk Factors

   The Trusts include certain types of bonds described  below.  Accordingly,  an
investment   in  a  Trust   should  be  made  with  an   understanding   of  the
characteristics  of and risks  associated  with such  bonds.  The types of bonds
included in each Trust are described on the cover of the related Prospectus Part
I.  Neither  the  Sponsor  nor the  Trustee  shall be  liable in any way for any
default, failure or defect in any of the Bonds.
   Certain of the Bonds may be general obligations of a governmental entity that
are backed by the taxing power of such entity. All other Bonds in the Trusts are
revenue bonds payable from the income of a specific project or authority and are
not supported by the issuer's power to levy taxes.  General obligation bonds are
secured by the  issuer's  pledge of its faith,  credit and taxing  power for the
payment of principal and interest. Revenue bonds, on the other hand, are payable
only from the revenues derived from a particular facility or class of facilities
or, in some cases,  from the proceeds of a special  excise tax or other specific
revenue  source.  There  are,  of  course,  variations  in the  security  of the
different Bonds in the Fund, both within a particular classification and between
classifications, depending on numerous factors.
 
   Certain of the Bonds may be  obligations  which  derive their  payments  from
mortgage  loans.  Certain  of such  housing  bonds may be FHA  insured or may be
single family  mortgage  revenue bonds 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.  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.  These  bonds were issued  under  Section  103A of the  Internal
Revenue Code, which Section contains 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.  Certain issuers of housing bonds have considered
various  ways to  redeem  bonds  they  have  issued  prior to the  stated  first
redemption  dates for such bonds.  In connection  with the housing bonds held by
the Fund,  the  Sponsor  at the Date of  Deposit  is not  aware  that any of the
respective issuers of such bonds are actively considering the redemption of such
bonds prior to their respective stated initial call dates.

   Certain  of the Bonds may be health  care  revenue  bonds.  Ratings  of bonds
issued for health care  facilities are often 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
and the ability of the  facility to provide the services  required,  physicians'
confidence  in the facility,  management  capabilities,  competition  with other
health care facilities,  efforts by insurers and governmental  agencies to limit
rates, legislation establishing state rate-setting agencies,  expenses, the cost
and possible  unavailability of malpractice insurance,  the funding of Medicare,
Medicaid and other similar third party payor programs, government regulation and
the termination or restriction of governmental  financial assistance,  including
that  associated  with  Medicare,  Medicaid and other  similar third party payor
programs.

   Certain of the Bonds may be obligations of public utility issuers,  including
those selling  wholesale and retail electric power and gas.  General problems of
such  issuers  would  include the  difficulty  in financing  large  construction
programs in an inflationary  period, 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.  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 to make payments of principal
and/or interest on such Bonds.

   Certain of the Bonds 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.

   Certain of the Bonds may be  industrial  revenue  bonds  ("IRBs").  IRBs have
generally been issued under bond resolutions  pursuant to which the revenues and
receipts  payable  under the  arrangements  with the  operator  of a  particular
project have been assigned and pledged to purchasers.  In some cases, a mortgage
on the  underlying  project  may have been  granted  as  security  for the IRBs.
Regardless  of the  structure,  payment  of IRBs is  solely  dependent  upon the
creditworthiness   of  the  corporate  operator  of  the  project  or  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  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.

   Certain of the Bonds may be obligations that are secured by lease payments of
a  governmental   entity  (hereinafter   called  "lease   obligations").   Lease
obligations are often in the form of certificates of participation. Although the
lease obligations do not constitute general  obligations of the municipality for
which  the  municipality's  taxing  power  is  pledged,  a lease  obligation  is
ordinarily backed by the municipality's covenant to appropriate for and make the
payments due under the lease  obligation.  However,  certain  lease  obligations
contain  "non-appropriation"  clauses which provide that the municipality has no
obligation to make lease  payments in future years unless money is  appropriated
for such purpose on a yearly basis. 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. Although  "non-appropriation" lease obligations are
secured by the leased  property,  disposition  of the  property  in the event of
foreclosure might prove difficult.

   Certain of the Bonds may be obligations of issuers which are, or which govern
the operation of,  schools,  colleges and  universities  and whose  revenues are
derived  mainly  from ad valorem  taxes or for higher  education  systems,  from
tuition, dormitory revenues, grants and endowments. General problems relating to
school  bonds  include  litigation  contesting  the state  constitutionality  of
financing  public  education in part from ad valorem taxes,  thereby  creating a
disparity in educational funds available to schools in wealthy areas and schools
in poor areas. Litigation or legislation on this issue may affect the sources of
funds available for the payment of school bonds in the Trusts.  General problems
relating  to college  and  university  obligations  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.

   Certain of the Bonds in certain  of the Trusts may be  obligations  which are
payable from and secured by revenues derived from the ownership and operation of
facilities such as airports,  bridges,  turnpikes, port authorities,  convention
centers and arenas.  The major portion of an airport's gross operating income is
generally  derived from fees received from  signatory  airlines  pursuant to use
agreements  which  consist of annual  payments for leases,  occupancy of certain
terminal  space and service  fees.  Airport  operating  income may  therefore be
affected by the ability of the airlines to meet their  obligations under the use
agreements.  From  time  to time  the air  transport  industry  has  experienced
significant  variations in earnings and traffic,  due to increased  competition,
excess capacity,  increased costs,  deregulation,  traffic constraints and other
factors,  and several airlines have experienced  severe financial  difficulties.
Similarly, payment on bonds related to other facilities is dependent on revenues
from the projects,  such as user fees from ports, tolls on turnpikes and bridges
and rents from  buildings.  Therefore,  payment  may be  adversely  affected  by
reduction  in revenues due to such  factors as  increased  cost of  maintenance,
decreased use of a facility,  lower cost of alternative modes of transportation,
scarcity of fuel and reduction or loss of rents.

   Certain of the Bonds may be obligations which are payable from and secured by
revenues derived from the operation of resource  recovery  facilities.  Resource
recovery  facilities  are designed to process  solid waste,  generate  steam and
convert  steam  to  electricity.  Resource  recovery  bonds  may be  subject  to
extraordinary  optional  redemption  at  par  upon  the  occurrence  of  certain
circumstances,  including but not limited to:  destruction or  condemnation of a
project;  contracts  relating  to a  project  becoming  void,  unenforceable  or
impossible to perform;  changes in the economic  availability  of raw materials,
operating  supplies or  facilities  necessary  for the operation of a project or
technological or other unavoidable  changes adversely affecting the operation of
a project;  and  administrative  or  judicial  actions  which  render  contracts
relating to the projects void,  unenforceable or impossible to perform or impose
unreasonable  burdens or excessive  liabilities.  The Sponsor cannot predict the
causes or likelihood of the  redemption  of resource  recovery  bonds in a Trust
prior to the stated maturity of the Bonds.

   Certain of the Bonds may have been  acquired  at a market  discount  from par
value at maturity.  The coupon interest rates on discount bonds at the time they
were  purchased  and  deposited  in a Trust were lower than the  current  market
interest  rates for newly issued bonds of  comparable  rating and type.  If such
interest rates for newly issued  comparable bonds increase,  the market discount
of previously  issued bonds will become greater,  and if such interest rates for
newly issued comparable bonds decline,  the market discount of previously issued
bonds will be reduced, other things being equal. Investors should also note that
the value of bonds  purchased at a market discount will increase in value faster
than bonds purchased at a market premium if interest rates decrease. Conversely,
if interest rates  increase,  the value of bonds  purchased at a market discount
will decrease faster than bonds purchased at a market premium.  In addition,  if
interest rates rise, the prepayment risk of higher yielding,  premium Securities
and the prepayment benefit for lower yielding, discount bonds will be reduced. A
bond  purchased  at a market  discount  and held to maturity  will have a larger
portion of its total  return in the form of taxable  income and capital gain and
less in the form of  tax-exempt  interest  income than a  comparable  bond newly
issued at current market rates.  See "Federal Tax Status" in Prospectus Part II.
Market  discount  attributable  to interest  changes does not indicate a lack of
market confidence in the issue.

   Certain  of the Bonds  may be "zero  coupon"  bonds.  Zero  coupon  bonds are
purchased  at a deep  discount  because  the  buyer  receives  only the right to
receive a final  payment at the  maturity  of the bond and does not  receive any
periodic  interest  payments.  The effect of owning deep discount bonds which do
not make current  interest  payments  (such as the zero coupon  bonds) 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 such  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
on the discount obligation, but at the same time 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 which
pay interest.

   Certain of the Bonds may have been purchased on a "when, as and if issued" or
"delayed  delivery"  basis.  See "Notes to Portfolio" in Prospectus  Part I. The
delivery  of any such Bonds may be delayed or may not occur.  Interest  on these
Bonds begins accruing to the benefit of Unitholders on their respective dates of
delivery. To the extent any Bonds are actually delivered to the Fund after their
respective  expected  dates of delivery,  Unitholders  who purchase  their Units
prior to the date such Bonds are  actually  delivered  to the  Trustee  would be
required to adjust  their tax basis in their Units for a portion of the interest
accruing on such Bonds during the interval  between their  purchase of Units and
the actual  delivery  of such  Bonds.  As a result of any such  adjustment,  the
Estimated  Current  Returns  during the first year would be slightly  lower than
those stated in the Prospectus  which would be the returns after the first year,
assuming the portfolio of a Trust and estimated  annual expenses other than that
of the  Trustee  (which  may be reduced in the first year only) do not vary from
that set forth in Prospectus Part I.  Unitholders will be "at risk" with respect
to all Bonds in the portfolios  including  "when, as and if issued" and "delayed
delivery" Bonds (i.e.,  may derive either gain or loss from  fluctuations in the
evaluation of such Bonds) from the date they commit for Units.

   Certain  of the Bonds may be  subject  to  redemption  prior to their  stated
maturity  date  pursuant  to  sinking  fund   provisions,   call  provisions  or
extraordinary  optional or  mandatory  redemption  provisions  or  otherwise.  A
sinking fund is a reserve fund  accumulated over a period of time for retirement
of debt. A callable  debt  obligation  is one which is subject to  redemption or
refunding prior to maturity at the option of the issuer. A refunding is a method
by which a debt obligation is redeemed,  at or before maturity,  by the proceeds
of a new debt  obligation.  In general,  call  provisions  are more likely to be
exercised when the offering side valuation is at a premium over par than when it
is at a discount from par. 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. Each Trust portfolio contains
a listing of the sinking fund and call provisions,  if any, with respect to each
of the  debt  obligations.  Extraordinary  optional  redemptions  and  mandatory
redemptions result from the happening of certain events. Generally,  events that
may permit the  extraordinary  optional  redemption  of bonds or may require the
mandatory redemption of bonds include,  among others: a final determination that
the interest on the bonds is taxable;  the substantial  damage or destruction by
fire or other  casualty of the project for which the  proceeds of the bonds were
used; an 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;  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  uneconomic;  changes in law or an  administrative  or judicial decree
which renders the  performance of the agreement  under which the proceeds of the
bonds were made  available to finance the project  impossible  or which  creates
unreasonable burdens or which imposes 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 of the bonds 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 issuer of certain bonds in a Trust may have sold or
reserved the right to sell,  upon the  satisfaction  of certain  conditions,  to
third parties all or any portion of its rights to call bonds in accordance  with
the stated  redemption  provisions  of such bonds.  In such a case the issuer no
longer has the right to call the bonds for  redemption  unless it reacquires the
rights  from such  third  party.  A third  party  pursuant  to these  rights may
exercise  the  redemption  provisions  with respect to a bond at a time when the
issuer of the bond might not have called a bond for  redemption  had it not sold
such rights. The Sponsor is unable to predict all of the circumstances which may
result in such  redemption  of an issue of  Bonds.  See also the  discussion  of
single family mortgage and multi-family revenue bonds above for more information
on the call provisions of such bonds.

   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 upon the Fund or any of the  Trusts.  At any
time after the Date of  Deposit,  litigation  may be  initiated  on a variety of
grounds with  respect to Bonds in the Fund.  Such  litigation,  as, for example,
suits  challenging  the  issuance  of  pollution  control  revenue  bonds  under
environmental  protection statutes, may affect the validity of such Bonds or the
tax-free nature of the interest thereon. While the outcome of litigation of such
nature can never be entirely  predicted,  the Fund has  received or will receive
opinions of bond counsel to the issuing  authorities of each Bond on the date of
issuance  to the effect  that such Bonds have been  validly  issued and that the
interest  thereon is exempt from Federal income tax. In addition,  other factors
may arise from time to time which  potentially may impair the ability of issuers
to meet obligations undertaken with respect to the Bonds.

                  Insurance on the Bonds in the Insured Trusts

   Insurance has been obtained by each Insured Trust,  by the issuer of Bonds in
an Insured Trust, by a prior owner of such Bonds, or by the Sponsor prior to the
deposit of such Bonds in a Trust  guaranteeing  prompt  payment of interest  and
principal,  when due, in respect of the bonds in such Trust.  See  Settlement of
Bonds in "The  Trusts--Objectives and Bond Selection" in Prospectus Part II. The
Portfolio  Insurers  and  the  Preinsured  Bond  Insurers  are  described  under
"Portfolio"  and  "Notes  to  Portfolio"  in  Prospectus  Part I. The  Portfolio
Insurers are either AMBAC Assurance  Corporation or Financial Guaranty Insurance
Company.  An  insurance  policy  obtained  by  an  Insured  Trust,  if  any,  is
non-cancellable  and  will  continue  in  force  so  long as  such  Trust  is in
existence,  the respective  Portfolio Insurer is still in business and the Bonds
described in such policy continue to be held by such Trust (see  "Portfolio" for
the  respective  Insured  Trust in Prospectus  Part I). Any portfolio  insurance
premium for an Insured Trust,  which is an obligation of such Trust,  is paid by
such Trust on a monthly basis.  Non-payment of premiums on a policy  obtained by
an Insured Trust will not result in the cancellation of insurance but will force
the insurer to take action against the Trustee to recover  premium  payments due
it. The  Trustee in turn will be  entitled to recover  such  payments  from such
Trust.  Premium rates for each issue of Bonds  protected by a policy obtained by
an Insured Trust,  if any, are fixed for the life of the Trust.  The premium for
any Preinsured Bond insurance has been paid by such issuer,  by a prior owner of
such Bonds or the Sponsor and any such  policy or policies  are  non-cancellable
and will continue in force so long as the Bonds so insured are  outstanding  and
the respective  Preinsured Bond Insurer remains in business.  If the provider of
an original  issuance  insurance policy is unable to meet its obligations  under
such policy or if the rating assigned to the  claims-paying  ability of any such
insurer  deteriorates,  the Portfolio  Insurers have no obligation to insure any
issue adversely affected by either of the above described events.

   The aforementioned  portfolio insurance obtained by an Insured Trust, if any,
guarantees  the timely  payment of principal and interest on the Bonds when they
fall due. For the purposes of insurance obtained by an Insured Trust, "when due"
generally means the stated payment or maturity date for the payment of principal
and  interest.  However,  in the event (a) an issuer of a Bond  defaults  in the
payment of  principal  or interest on such Bond,  (b) such issuer  enters into a
bankruptcy  proceeding  or (c) the  maturity  of such Bond is  accelerated,  the
affected  Portfolio  Insurer  has the  option,  in its  sole  discretion,  after
receiving  notice  of the  earliest  to  occur  of  such a  default,  bankruptcy
proceeding or acceleration to pay the outstanding  principal amount of such Bond
plus accrued  interest to the date of such  payment and thereby  retire the Bond
from the affected Trust prior to such Bond's stated maturity date. The insurance
does not  guarantee  the  market  value of the Bonds or the value of the  Units.
Insurance  obtained by an Insured  Trust,  if any, is only effective as to Bonds
owned by and held in such Trust.  In the event of a sale of any such Bond by the
Trustee, such insurance terminates as to such Bond on the date of sale.

   Pursuant to an irrevocable commitment of the Portfolio Insurers, the Trustee,
upon the sale of a Bond covered under a portfolio  insurance  policy obtained by
an Insured Trust,  has the right to obtain  permanent  insurance with respect to
such Bond (i.e., insurance to maturity of the Bond regardless of the identity of
the holder  thereof) (the  "Permanent  Insurance")  upon the payment of a single
predetermined  insurance  premium  and any  expenses  related  thereto  from the
proceeds of the sale of such Bond. Accordingly,  any Bond in an Insured Trust is
eligible to be sold on an insured  basis.  It is expected that the Trustee would
exercise the right to obtain Permanent  Insurance only if upon such exercise the
affected  Trust  would  receive net  proceeds  (sale of Bond  proceeds  less the
insurance premium and related expenses  attributable to the Permanent Insurance)
from  such sale in excess of the sale  proceeds  if such  Bonds  were sold on an
uninsured  basis.  The insurance  premium with respect to each Bond eligible for
Permanent Insurance would be determined based upon the insurability of each Bond
as of the Date of Deposit and would not be increased or decreased for any change
in the creditworthiness of each Bond.

   The  Sponsor  believes  that  the  Permanent  Insurance  option  provides  an
advantage  to an Insured  Trust in that each Bond  insured by a Trust  insurance
policy may be sold out of the affected  Trust with the benefits of the insurance
attaching  thereto.  Thus,  the value of the  insurance,  if any, at the time of
sale,  can be realized in the market value of the Bond so sold (which is not the
case in connection with any value  attributable to an Insured Trust's  portfolio
insurance).  See Public Offering--Offering Price" in Prospectus Part II. Because
any such  insurance  value may be realized in the market  value of the Bond upon
the sale thereof upon exercise of the Permanent  Insurance  option,  the Sponsor
anticipates  that (a) in the event an Insured  Trust were to be  comprised  of a
substantial percentage of Bonds in default or significant risk of default, it is
much less  likely  that such  Trust  would  need at some point in time to seek a
suspension  of  redemptions  of Units  than if such  Trust  were to have no such
option (see "Rights of  Unitholders--Redemption of Units" in Prospectus Part II)
and (b) at the time of  termination  of an  Insured  Trust,  if such  Trust were
holding defaulted Bonds or Bonds in significant risk of default such Trust would
not need to hold such Securities until their  respective  maturities in order to
realize  the  benefits  of  such   Trust's   portfolio   insurance   (see  "Fund
Administration--Termination of Trust Agreement" in Prospectus Part II).

   Except as  indicated  below,  insurance  obtained by an Insured  Trust has no
effect on the price or redemption value of Units. It is the present intention of
the Evaluator to attribute a value for such  insurance  (including  the right to
obtain Permanent Insurance) for the purpose of computing the price or redemption
value of Units if the Bonds covered by such  insurance are in default in payment
of principal or interest or in  significant  risk of such default.  The value of
the  insurance  will be the  difference  between (i) the market  value of a bond
which is in default in payment of principal or interest or in  significant  risk
of such default assuming the exercise of the right to obtain Permanent Insurance
(less the insurance premium and related expenses attributable to the purchase of
Permanent  Insurance)  and (ii) the market  value of such  Bonds not  covered by
Permanent Insurance.  See "Public  Offering--Offering  Price" in Prospectus Part
II. It is also the  present  intention  of the Trustee not to sell such Bonds to
effect  redemptions  or for any other  reason but  rather to retain  them in the
portfolio  because value  attributable to the insurance  cannot be realized upon
sale.  See "Public  Offering--Offering  Price" in Prospectus  Part II for a more
complete description of an Insured Trust's method of valuing defaulted Bonds and
Bonds which have a significant risk of default. Insurance obtained by the issuer
of a Bond is effective so long as such Bond is outstanding.  Therefore, any such
insurance may be considered to represent an element of market value in regard to
the Bonds thus insured,  but the exact effect, if any, of this insurance on such
market value cannot be predicted.

   The portfolio  insurance policy or policies  obtained by an Insured Trust, if
any,  with  respect to the Bonds in such Trust were issued by one or more of the
Portfolio  Insurers.  Any other  Preinsured Bond insurance policy (or commitment
therefor)  was  issued  by  one  of  the  Preinsured  Bond  Insurers.  See  "The
Trusts--Objectives and Bond Selection" in Prospectus Part II.

    Capital Markets  Assurance  Corporation  ("CapMAC") is a New  York-domiciled
monoline stock insurance company which engages only in the business of financial
guaranty and surety  insurance.  CapMAC is licensed in all 50 states in addition
to the District of Columbia,  the  Commonwealth of Puerto Rico and the territory
of Guam. CapMAC insures structured asset-backed,  corporate, municipal and other
financial obligations in the U.S. and international capital markets. CapMAC also
provides financial guarantee reinsurance for structured asset-backed, corporate,
municipal  and other  financial  obligations  written by other  major  insurance
companies.

    CapMAC's  claims-paying ability is rated "Aaa" by Moody's Investors Service,
Inc.  ("Moody's"),  "AAA" by  Standard & Poor's,  "AAA" by Duff & Phelps  Credit
Rating Co. ("Duff & Phelps") and "AAA" by Nippon  Investors  Service,  Inc. Such
ratings  reflect  only the  views of the  respective  rating  agencies,  are not
recommendations  to buy, sell or hold  securities and are subject to revision or
withdrawal at any time by such rating agencies.

   
    Pursuant  to a merger  of a  subsidiary  of MBIA Inc.  with and into  CapMAC
Holdings Inc., CapMAC became an indirect wholly-owned subsidiary of MBIA Inc. on
February  17,  1998.  MBIA  Inc.,  through  its  wholly-owned  subsidiary,  MBIA
Insurance  Corporation,  is a financial  guaranty insurer of municipal bonds and
structured finance transactions.  MBIA Insurance Corporation has a claims paying
rating of  triple-A  from  Moody's  Investor  Service,  Inc.,  Standard & Poor's
Ratings  Services  and  Fitch  Investors  Service.  Pursuant  to  a  reinsurance
agreement, it is anticipated that CapMAC will cede all of its net insured risks,
as well as its unearned  premiums and  contingency  reserves,  to MBIA Insurance
Corporation  and that MBIA  Insurance  Corporation  will  reinsure  CapMAC's net
outstanding exposure. Neither MBIA Inc. nor any of its stockholders is obligated
to pay any claims under any policy issued by CapMAC or any debts of CapMAC or to
make additional capital contributions to CapMAC.
    

    CapMAC is regulated by the  Superintendent  of Insurance of the State of New
York. In addition,  CapMAC is subject to  regulation  by the insurance  laws and
regulations of the other  jurisdictions in which it is licensed.  Such insurance
laws  regulate,  among other  things,  the amount of net  exposure per risk that
CapMAC may retain, capital transfers,  dividends,  investment of assets, changes
in control,  transactions with affiliates and  consolidations  and acquisitions.
CapMAC is subject to periodic  regulatory  examinations  by the same  regulatory
authorities.

    CapMAC's obligations under the Policy(s) may be reinsured.  Such reinsurance
does not relieve CapMAC of any of its obligations under the Policy(s).

     THE POLICY IS NOT COVERED BY THE PROPERTY/CASUALTY  INSURANCE SECURITY FUND
SPECIFIED IN ARTICLE 76 OF THE NEW YORK INSURANCE LAW.

   
     As of December 31, 1995 and 1996,  CapMAC had qualified  statutory  capital
(which consists of policyholders'  surplus,  statutory capital,  and contingency
reserves) of approximately $260 million and $240 million,  respectively, and had
not  incurred  any debt  obligations.  As of  September  30,  1997,  CapMAC  had
qualified  statutory  capital of $278.6  million and had not  incurred  any debt
obligations.  Article 69 of the New York State  Insurance Law requires CapMAC to
establish  and maintain  the  contingency  reserve,  which is available to cover
claims under policies issued by CapMAC.
    

    Copies  of  CapMAC's  financial   statements  prepared  in  accordance  with
statutory accounting standards,  which differ from generally accepted accounting
principles, are filed with the Insurance Department of the State of New York and
are available upon request. CapMAC is located at 885 Third Avenue, New York, New
York 10022, and its telephone is (212) 755-1155.

    Effective July 14, 1997,  AMBAC  Indemnity  Corporation  changed its name to
AMBAC  Assurance   Corporation  ("AMBAC   Assurance").   AMBAC  Assurance  is  a
Wisconsin-domiciled  stock insurance  corporation regulated by the Office of the
Commissioner  of Insurance of the State of Wisconsin and licensed to do business
in 50 states, the District of Columbia and the Commonwealth of Puerto Rico, with
admitted  assets  of   $2,735,772,668   (unaudited)  and  statutory  capital  of
$1,547,693,950  (unaudited) as of June 30, 1997.  Statutory  capital consists of
AMBAC  Assurance's  policyholders'  surplus and statutory  contingency  reserve.
AMBAC Assurance is a wholly owned subsidiary of AMBAC Financial  Group,  Inc., a
100%  publicly-held  company.  Moody's  Investors  Service,  Inc. and Standard &
Poor's  have both  assigned a  triple-A  claims-paying  ability  rating to AMBAC
Assurance.
    Copies of its financial  statements  prepared in accordance  with  statutory
accounting  standards are available from AMBAC  Assurance.  The address of AMBAC
Assurance's administrative offices and its telephone number are One State Street
Plaza, 17th Floor, New York, New York, 10004 and (212) 668-0340.

    AMBAC Assurance has entered into quota share  reinsurance  agreements  under
which a percentage of the insurance  underwritten  pursuant to certain municipal
bond  insurance  programs of AMBAC  Assurance  has been and will be assumed by a
number of foreign and domestic unaffiliated reinsurers.

    MBIA Insurance Corporation ("MBIA") 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  MBIA.  MBIA is domiciled in the State of
New York and licensed to do business in and subject to regulation under the laws
of all fifty states, the District of Columbia,  the Commonwealth of the Northern
Mariana  Islands,  the  Commonwealth  of Puerto Rico,  the Virgin Islands of the
United States and the Territory of Guam. MBIA has two European branches,  one in
the Republic of France and the other in the Kingdom of Spain.  New York has laws
prescribing minimum capital requirements, limiting classes and concentrations of
investments  and  requiring  the approval of policy rates and forms.  State laws
also regulate the amount of both the aggregate and individual  risks that may be
insured,  the  payment of  dividends  by the  insurer,  changes  in control  and
transactions among affiliates. Additionally, the Insurer is required to maintain
contingency  reserves  on its  liabilities  in certain  amounts  and for certain
periods of time.

   
    Effective  February 17, 1998,  MBIA,  Inc.  acquired all of the  outstanding
stock of CapMAC,  through a merger with its parent, CapMAC Holdings,  Inc. MBIA,
Inc.  then  contributed  the  common  stock of  CapMAC  to MBIA.  Pursuant  to a
reinsurance agreement,  CapMAC has ceded all of its net insured risks as well as
its unearned  premiums and  contingency  reserves to MBIA and MBIA has reinsured
CapMAC's net outstanding  exposure.  MBIA, Inc. is not obligated to pay debts of
or claims against CapMAC.

    As of December  31, 1996,  the insurer had  admitted  assets of $4.4 billion
(audited),  total liabilities of $3.0 billion  (audited),  and total capital and
surplus of $1.4  billion  (audited)  determined  in  accordance  with  statutory
accounting   practices   prescribed   or  permitted   by  insurance   regulatory
authorities.  As of September 30, 1997, MBIA had admitted assets of $5.1 billion
(unaudited),  total liabilities of $3.4 billion  (unaudited),  and total capital
and surplus of $1.7 billion (unaudited), determined in accordance with statutory
accounting   practices   prescribed   or  permitted   by  insurance   regulatory
authorities.  Copies of MBIA's financial  statements prepared in accordance with
statutory  accounting  practices are available from MBIA. The address of MBIA is
113 King Street, Armonk, New York 10504.
    

    Effective  December 31, 1989, MBIA, Inc. acquired Bond Investors Group, Inc.
On January 5, 1990, MBIA acquired all of the outstanding stock of Bond Investors
Group,  Inc., the parent of Bond Investors Guaranty Insurance Company (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 MBIA and MBIA has  reinsured  BIG's  net  outstanding
exposure.

     Moody's Investors Service, Inc. rates all bond issues insured by MBIA "Aaa"
and short-term loans "MIG-1," both designated to be of the highest quality.

    Standard & Poor's rates all new issues insured by MBIA "AAA" Prime Grade.

    Moody's,  Standard & Poor's and Fitch IBCA,  Inc.  (formerly Fitch Investors
Service, L.P.), all rate the claims paying ability of MBIA as "Triple A."

    The Moody's  Investors  Service,  Inc.  rating of MBIA  should be  evaluated
independently  of the Standard & Poor's rating of MBIA. No application  has been
made to any other  rating  agency in order to obtain  additional  ratings on the
Obligations.   The  ratings  reflect  the  respective  rating  agency's  current
assessment of the  creditworthiness of MBIA 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.

    The  above  ratings  are  not  recommendations  to buy,  sell  or  hold  the
Obligations  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 Obligations.
   
    Financial Guaranty Insurance Company  ("Financial  Guaranty" or "FGIC") is a
wholly-owned  subsidiary of FGIC  Corporation  (the  "Corporation"),  a Delaware
holding  company.  The Corporation is a subsidiary of General  Electric  Capital
Corporation  ("GECC").  Neither the Corporation nor GECC is obligated to pay the
debts of or the claims  against  Financial  Guaranty.  Financial  Guaranty  is a
monoline  financial  guaranty  insurer  domiciled  in the  State of New York and
subject  to  regulation  by the State of New York  Insurance  Department.  As of
December  31,  1997,  the total  capital and surplus of  Financial  Guaranty was
$1,255,590,411. Copies of Financial Guaranty's financial statements, prepared on
the basis of statutory accounting  principles,  and the Corporation's  financial
statements,  prepared on the basis of generally accepted accounting  principles,
may be obtained by writing to Financial Guaranty at 115 Broadway,  New York, New
York  10006,  Attention:  Communications  Department,  telephone  number:  (212)
312-3000 or to the New York State Insurance  Department at 25 Beaver Street, New
York, New York  10004-2319,  Attention:  Financial  Condition  Property/Casualty
Bureau, telephone number: (212) 480-5187.
    
     In addition, Financial Guaranty is currently licensed to write insurance in
all 50 states and the District of Columbia.

     Financial  Security  Assurance  Inc.  ("Financial  Security" or "FSA") is a
monoline  insurance company  incorporated in 1984 under the laws of the State of
New York.  Financial  Security is licensed to engage in the  financial  guaranty
insurance business in all 50 states, the District of Columbia and Puerto Rico.

    Financial  Security  and its  subsidiaries  are  engaged in the  business of
writing  financial  guaranty  insurance,  principally  in respect of  securities
offered  in  domestic  and  foreign  markets.  In  general,  financial  guaranty
insurance  consists of the  issuance of a guaranty of  scheduled  payments of an
issuer's securities, thereby enhancing the credit rating of those securities, in
consideration  for payment of a premium to the insurer.  Financial  Security and
its subsidiaries  principally insure asset-backed,  collateralized and municipal
securities.  Asset-backed  securities  are  generally  supported by  residential
mortgage loans, consumer or trade receivables, securities or other assets having
an ascertainable  cash flow or market value.  Collateralized  securities include
public  utility  first  mortgage  bonds  and  sale/leaseback  obligation  bonds.
Municipal  securities  consist  largely of  general  obligation  bonds,  special
revenue  bonds and other  special  obligations  of state and local  governments.
Financial  Security  insures  both newly issued  securities  sold in the primary
market and  outstanding  securities  sold in the  secondary  market that satisfy
Financial Security's underwriting criteria.

   
    Financial  Security  is a  wholly-owned  subsidiary  of  Financial  Security
Assurance Holdings Ltd. ("Holdings"),  a New York Stock Exchange listed company.
Major shareholders of Holdings include Fund American Enterprises Holdings, Inc.,
U S WEST Capital  Corporation  and The Tokio Marine and Fire Insurance Co., Ltd.
No shareholder  of Financial  Security is obligated to pay any debt of Financial
Security or its  subsidiaries or any claim under any insurance  policy issued by
Financial Security or its subsidiaries or to make any additional contribution to
the capital of Financial Security or its subsidiaries. As of September 30, 1997,
the total policyholders' surplus and contingency reserves and the total unearned
premium  reserve,  respectively,  of  Financial  Security  and its  consolidated
subsidiaries   were,  in  accordance  with  statutory   accounting   principles,
approximately  $788,108,000  (unaudited) and $461,203,000  (unaudited),  and the
total shareholders' equity and the total unearned premium reserve, respectively,
of Financial Security and its consolidated subsidiaries were, in accordance with
generally accepted accounting principles, approximately $894,461,000 (unaudited)
and  $401,251,000   (unaudited).   Copies  of  Financial   Security's  financial
statements may be obtained by writing to Financial  Security at 350 Park Avenue,
New York, New York, 10022, Attention:  Communications  Department. Its telephone
number is (212) 826-0100.
    

   Pursuant to an  intercompany  agreement,  liabilities  on financial  guaranty
insurance  written or reinsured from third parties by Financial  Security or any
of  its  domestic  operating  insurance  company  subsidiaries   (including  FSA
Maryland)  are  reinsured  among such  companies  on an  agreed-upon  percentage
substantially  proportional to their respective  capital,  surplus and reserves,
subject  to  applicable  statutory  risk  limitations.  In  addition,  Financial
Security and FSA Maryland  reinsure a portion of their liabilities under certain
of their  financial  guaranty  insurance  policies with other  reinsurers  under
various quota share  treaties and on a  transaction-by-transaction  basis.  Such
reinsurance is utilized as a risk  management  device and to comply with certain
statutory  and  rating  agency  requirements;  it does not  alter  or limit  the
obligations of Financial  Security or FSA Maryland under any financial  guaranty
insurance policy.

   The  claims-paying  ability of  Financial  Security and FSA Maryland is rated
"Aaa" by Moody's Investors Service, Inc., and "AAA" by Standard & Poor's Ratings
Services,  Nippon Investors Service Inc. and Standard & Poor's  (Australia) Pty.
Ltd. Such ratings reflect only the views of the respective rating agencies,  are
not  recommendations to buy, sell or hold securities and are subject to revision
or withdrawal at any time by such rating agencies.

   Capital  Guaranty  Insurance  Company was  involved  in a merger in 1995.  On
December 20, 1995, Capital Guaranty Corporation ("CGC") merged with a subsidiary
of Financial  Security  Assurance  Holdings Ltd. and Capital Guaranty  Insurance
Company,  CGC's principal  operating  subsidiary,  changed its name to Financial
Security  Assurance of Maryland Inc. ("FSA  Maryland") and became a wholly owned
subsidiary of Financial Security Assurance Inc.

     The address of FSA Maryland and its telephone number are Steuart Tower, One
Market Plaza, San Francisco, CA 94105-1413 and (415) 995-8000.

   In order to be in an  Insured  Trust,  Bonds  must be  insured  by one of the
Preinsured Bond Insurers or be eligible for the insurance being obtained by such
Trust. In determining  eligibility  for insurance,  the Preinsured Bond Insurers
and the Portfolio  Insurers have applied  their own standards  which  correspond
generally to the standards they normally use in establishing the insurability of
new issues of municipal bonds and which are not necessarily the criteria used in
the  selection  of Bonds by the  Sponsor.  To the  extent the  standards  of the
Preinsured Bond Insurers and the Portfolio  Insurers are more  restrictive  than
those of the Sponsor,  the previously stated Trust investment criteria have been
limited  with respect to the Bonds.  This  decision is made prior to the Date of
Deposit,  as debt obligations not eligible for insurance are not deposited in an
Insured Trust. Thus, all of the Bonds in the portfolios of the Insured Trusts in
the Fund are  insured  either by the  respective  Trust or by the  issuer of the
Bonds,  by a prior owner of such Bonds or by the Sponsor prior to the deposit of
such Bonds in a Trust.

   Because the Bonds are insured by one of the Portfolio  Insurers or one of the
Preinsured  Bond  Insurers as to the timely  payment of principal  and interest,
when due,  and on the basis of the  various  reinsurance  agreements  in effect,
Standard  & Poor's has  assigned  to the Units of each  Insured  Trust its "AAA"
investment rating. Such rating will be in effect for a period of thirteen months
from the Date of Deposit and will, unless renewed,  terminate at the end of such
period. See "Description of Ratings". The obtaining of this rating by an Insured
Trust  should not be  construed  as an approval of the  offering of the Units by
Standard & Poor's or as a guarantee  of the market value of such Trust or of the
Units.

   An objective of portfolio insurance obtained by an Insured Trust is to obtain
a higher yield on the portfolio of such Trust than would be available if all the
Bonds in such  portfolio  had Standard & Poor's "AAA" rating and yet at the same
time to have the  protection  of  insurance  of prompt  payment of interest  and
principal,  when due, on the Bonds.  There is, of course, no certainty that this
result will be achieved.  Preinsured Bonds in an Insured Trust (all of which are
rated  "AAA" by  Standard  &  Poor's)  may or may not have a higher  yield  than
uninsured bonds rated "AAA" by Standard & Poor's. In selecting such Bonds for an
Insured Trust, the Sponsor has applied the criteria hereinbefore described.

   In the event of nonpayment of interest or principal,  when due, in respect of
a Bond,  AMBAC  Indemnity  shall  make such  payment  not later than 30 days and
Financial  Guaranty  shall make such  payment  within one business day after the
respective  insurer has been  notified that such  nonpayment  has occurred or is
threatened (but not earlier than the date such payment is due). The insurer,  as
regards  any payment it may make,  will  succeed to the rights of the Trustee in
respect  thereof.  All  policies  issued  by  the  Portfolio  Insurers  and  the
Preinsured Bond Insurers are  substantially  identical insofar as obligations to
an Insured Trust are concerned.

   The Internal Revenue Service has issued a letter ruling which holds in effect
that insurance proceeds  representing  maturing interest on defaulted  municipal
obligations  paid  to  holders  of  insured  bonds,   under  policy   provisions
substantially  identical to the policies  described  herein,  will be excludable
from Federal gross income under Section  103(a)(1) of the Internal  Revenue Code
to the same extent as if such  payments were made by the issuer of the municipal
obligations.  Holders of Units in an Insured Trust should discuss with their tax
advisers  the degree of  reliance  which they may place on this  letter  ruling.
However,  Chapman and Cutler,  counsel for the Sponsor,  has given an opinion to
the effect such  payment of proceeds  would be  excludable  from  Federal  gross
income to the extent described under "Federal Tax Status" in Prospectus Part II.

   Each  Portfolio  Insurer  is  subject  to  regulation  by the  department  of
insurance in the state in which it is qualified to do business. Such regulation,
however,  is no guarantee that each Portfolio Insurer will be able to perform on
its contract of insurance in the event a claim should be made thereunder at some
time in the future.  At the date hereof, it is reported that no claims have been
submitted or are expected to be submitted to any of the Portfolio Insurers which
would  materially  impair the ability of any such company to meet its commitment
pursuant to any contract of bond or portfolio insurance.

   The information relating to each Portfolio Insurer has been furnished by such
companies.  The financial  information  with respect to each  Portfolio  Insurer
appears in reports  filed with state  insurance  regulatory  authorities  and is
subject  to audit and  review by such  authorities.  No  representation  is made
herein as to the accuracy or adequacy of such  information  or as to the absence
of material adverse changes in such information subsequent to the dates thereof.

                            Portfolio Administration

   The Trustee is empowered to sell, for the purpose of redeeming Units tendered
by any  Unitholder,  and for the payment of expenses  for which funds may not be
available,  such of the Bonds  designated by the Evaluator as the Trustee in its
sole discretion may deem necessary.  The Evaluator,  in designating  such Bonds,
will  consider a variety of factors  including  (a) interest  rates,  (b) market
value and (c) marketability. The Sponsor, in connection with the Quality Trusts,
may direct the Trustee to dispose of Bonds upon  default in payment of principal
or interest,  institution  of certain  legal  proceedings,  default  under other
documents adversely  affecting debt service,  default in payment of principal or
interest or other  obligations of the same issuer,  decline in projected  income
pledged for debt service on revenue bonds or decline in price or the  occurrence
of other  market or credit  factors,  including  advance  refunding  (i.e.,  the
issuance of  refunding  securities  and the deposit of the  proceeds  thereof in
trust or escrow to retire the refunded securities on their respective redemption
dates),  so that in the opinion of the Sponsor the retention of such Bonds would
be  detrimental  to the  interest of the  Unitholders.  In  connection  with the
Insured Trusts to the extent that Bonds are sold which are current in payment of
principal and interest in order to meet redemption  requests and defaulted Bonds
are  retained  in the  portfolio  in order to  preserve  the  related  insurance
protection  applicable to said Bonds, the overall quality of the Bonds remaining
in such Trust's  portfolio  will tend to  diminish.  Except as described in this
section and in certain other unusual circumstances for which it is determined by
the Trustee to be in the best  interests  of the  Unitholders  or if there is no
alternative,  the Trustee is not  empowered to sell Bonds from an Insured  Trust
which are in default in payment of principal or interest or in significant  risk
of such  default  and for which  value  has been  attributed  for the  insurance
obtained by such Insured  Trust.  Because of  restrictions  on the Trustee under
certain circumstances,  the Sponsor may seek a full or partial suspension of the
right of Unitholders  to redeem their Units in an Insured Trust.  See "Rights of
Unitholders--Redemption  of  Units"  in  Prospectus  Part  II.  The  Sponsor  is
empowered,  but not obligated,  to direct the Trustee to dispose of Bonds in the
event of an advanced refunding.

   The Sponsor is  required to instruct  the Trustee to reject any offer made by
an  issuer  of any of  the  Bonds  to  issue  new  obligations  in  exchange  or
substitution  for any Bond pursuant to a refunding or refinancing  plan,  except
that the Sponsor may  instruct  the Trustee to accept or reject such an offer or
to take any other action with respect  thereto as the Sponsor may deem proper if
(1) the issuer is in  default  with  respect to such Bond or (2) in the  written
opinion of the Sponsor the issuer will  probably  default  with  respect to such
Bond in the  reasonably  foreseeable  future.  Any  obligation  so  received  in
exchange or  substitution  will be held by the Trustee  subject to the terms and
conditions  of the  Trust  Agreement  to the same  extent  as  Bonds  originally
deposited  thereunder.  Within  five days after the  deposit of  obligations  in
exchange or substitution  for underlying  Bonds, the Trustee is required to give
notice thereof to each Unitholder of the Trust thereby affected, identifying the
Bonds eliminated and the Bonds substituted therefor. Except as stated herein and
under "Fund  Administration--Replacement  Bonds" in Prospectus Part II regarding
the  substitution of Replacement  Bonds for Failed Bonds, the acquisition by the
Fund  of  any  securities  other  than  the  Bonds  initially  deposited  is not
permitted.

   If any default in the payment of  principal  or interest on any Bonds  occurs
and no provision  for payment is made  therefor  within 30 days,  the Trustee is
required to notify the Sponsor  thereof.  If the Sponsor  fails to instruct  the
Trustee to sell or to hold such Bonds within 30 days after  notification  by the
Trustee to the Sponsor of such default,  the Trustee may in its discretion  sell
the  defaulted  Bond and not be  liable  for any  depreciation  or loss  thereby
incurred.

                               Trustee Information

   The Trustee is The Bank of New York, a trust company organized under the laws
of New York. The Bank of New York has its unit investment trust division offices
at 101 Barclay Street, New York, New York 10286,  telephone (800) 221-7668.  The
Bank of New York is subject to supervision and examination by the Superintendent
of Banks of the  State of New York and the  Board of  Governors  of the  Federal
Reserve System,  and its deposits are insured by the Federal  Deposit  Insurance
Corporation to the extent permitted by law.

   The duties of the Trustee are  primarily  ministerial  in nature.  It did not
participate  in the selection of Bonds for the  portfolios of any of the Trusts.
In accordance with the Trust  Agreement,  the Trustee shall keep proper books of
record and account of all  transactions at its office for the Fund. Such records
shall include the name and address of, and the  certificates  issued by the Fund
to,  every  Unitholder  of the Fund.  Such  books and  records  shall be open to
inspection by any Unitholder at all  reasonable  times during the usual business
hours.  The Trustee  shall make such annual or other reports as may from time to
time be  required  under  any  applicable  state  or  Federal  statute,  rule or
regulation.  The  Trustee is  required  to keep a  certified  copy or  duplicate
original of the Trust  Agreement on file in its office  available for inspection
at all  reasonable  times  during the usual  business  hours by any  Unitholder,
together with a current list of the Bonds held in the Fund.

   Under the Trust  Agreement,  the Trustee or any successor  trustee may resign
and be discharged of the trusts  created by the Trust  Agreement by executing an
instrument  in  writing  and filing the same with the  Sponsor.  The  Trustee or
successor  trustee  must mail a copy of the  notice of  resignation  to all Fund
Unitholders  then of record,  not less than 60 days before the date specified in
such notice when such resignation is to take effect.  The Sponsor upon receiving
notice of such resignation is obligated to appoint a successor trustee promptly.
If, upon such  resignation,  no  successor  trustee 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. The Sponsor may remove the Trustee and appoint a successor trustee as
provided in the Trust  Agreement  at any time with or without  cause.  Notice of
such removal and appointment  shall be mailed to each Unitholder by the Sponsor.
Upon  execution of a written  acceptance of such  appointment  by such successor
trustee, all the rights,  powers, duties and obligations of the original trustee
shall vest in the successor.  The  resignation  or removal of a Trustee  becomes
effective  only when the successor  trustee  accepts its  appointment as such or
when a court  of  competent  jurisdiction  appoints  a  successor  trustee.  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.  The Trustee
must be a banking  corporation  organized under the laws of the United States or
any state and having at all times an aggregate  capital,  surplus and  undivided
profits of not less than $5,000,000.

                       Termination of the Trust Agreement

   A Trust may be terminated at any time by consent of Unitholders of 51% of the
Units of such Trust then  outstanding  or by the Trustee  when the value of such
Trust, as shown by any semi-annual evaluation,  is less than 20% of the original
principal  amount of Bonds.  A Trust will be  liquidated  by the  Trustee in the
event that a sufficient number of Units not yet sold are tendered for redemption
by the Underwriters,  including the Sponsor, so that the net worth of such Trust
would be reduced to less than 40% of the initial principal amount of such Trust.
If a Trust is  liquidated  because  of the  redemption  of  unsold  Units by the
Underwriters,  the  Sponsor  will refund to each  purchaser  of Units the entire
sales charge paid by such  purchaser.  The Trust  Agreement  provides  that each
Trust shall terminate upon the redemption, sale or other disposition of the last
Bond held in such Trust, but in no event shall it continue beyond the end of the
year preceding the fiftieth anniversary of the Trust Agreement in the case of an
IM-IT  Discount,  a U.S.  Territorial  IM-IT,  a  Long-Term  State or a National
Quality Trust, or beyond the end of the year preceding the twentieth anniversary
of  the  Trust  Agreement  in  the  case  of  IM-IT  Limited   Maturity,   IM-IT
Intermediate,  State Intermediate Laddered Maturity and IM-IT Short Intermediate
Trusts. In the event of termination of any Trust, written notice thereof will be
sent by the Trustee to each Unitholder of such Trust at his address appearing on
the  registration  books  of the  Fund  maintained  by  the  Trustee.  Within  a
reasonable  time  thereafter  the Trustee shall  liquidate any Bond then held in
such  Trust and shall  deduct  from the funds of such Trust any  accrued  costs,
expenses or indemnities  provided by the Trust  Agreement,  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  government
charges.  The sale of Bonds in the Trust upon  termination may result in a lower
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  or par  amount  of Bonds
represented  by the  Units  held by such  Unitholder.  The  Trustee  shall  then
distribute  to each  Unitholder  his share of the  balance of the  Interest  and
Principal  Accounts.  With such distribution the Unitholder shall be furnished a
final 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.

   Notwithstanding  the foregoing,  in connection  with final  distributions  to
Unitholders of an Insured  Trust,  it should be noted that because the portfolio
insurance obtained by an Insured Trust is applicable only while Bonds so insured
are  held by such  Trust,  the  price  to be  received  by such  Trust  upon the
disposition  of any such Bond which is in default,  by reason of  nonpayment  of
principal  or  interest,  will not reflect  any value  based on such  insurance.
Therefore, in connection with any liquidation, it shall not be necessary for the
Trustee to, and the Trustee does not currently intend to, dispose of any Bond or
Bonds if  retention of such Bond or Bonds,  until due,  shall be deemed to be in
the best interest of Unitholders,  including,  but not limited to, situations in
which a Bond or Bonds so insured have deteriorated  market prices resulting from
a significant risk of default. Since the Preinsured Bonds will reflect the value
of the  related  insurance,  it is the present  intention  of the Sponsor not to
direct  the  Trustee  to hold any of such  Preinsured  Bonds  after  the date of
termination.  All proceeds received, less applicable expenses, from insurance on
defaulted  Bonds not disposed of at the date of termination  will  ultimately be
distributed  to  Unitholders of record as of such date of termination as soon as
practicable  after  the  date  such  defaulted  Bond  or  Bonds  become  due and
applicable insurance proceeds have been received by the Trustee.

                             Description of Ratings

   Standard & Poor's,  A Division  of the  McGraw-Hill  Companies.  A Standard &
Poor's municipal bond rating is a current assessment of the  creditworthiness of
an obligor  with  respect to a specific  debt  obligation.  This  assessment  of
creditworthiness  may  take  into  consideration  obligors  such as  guarantors,
insurers or lessees.

     The bond  rating is not a  recommendation  to  purchase or sell a security,
inasmuch  as it does not  comment as to market  price.  The ratings are based on
current information furnished to Standard & Poor's by the issuer and obtained by
Standard & Poor's from other sources it considers  reliable.  The ratings may be
changed, suspended or withdrawn as a result of changes in, or unavailability of,
such information.

   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  and  indicates an extremely  strong  capacity to pay  principal  and
interest.

   AA--Bonds rated AA also qualify as high-quality debt obligations. Capacity to
pay principal and interest is very strong, and in the majority of instances they
differ from AAA issues only in small degree.

   A--Bonds  rated A have a  strong  capacity  to pay  principal  and  interest,
although they are somewhat more susceptible to the adverse effects of changes in
circumstances and economic conditions.

   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
debt in this category than in higher rated categories.

   Plus (+) or Minus  (-):  To  provide  more  detailed  indications  of  credit
quality,  the ratings  from "AA" to "BBB" may be  modified by the  addition of a
plus or minus sign to show relative standing within the major rating categories.

   Provisional  Ratings:  A  provisional  rating  ("p")  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,
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.

   Moody's Investors Service, Inc. A brief description of the applicable Moody's
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.  With the occasional
exception of oversupply in a few specific  instances,  the safety of obligations
of this class is so absolute that 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.  These Aa bonds are high grade,  their market value 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 higher 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 credit  circumstances
during a sustained period of depressed  business  conditions.  During periods of
normalcy,  bonds of this  quality  frequently  move in parallel  with Aaa and Aa
obligations,  with the  occasional  exception  of  oversupply  in a few specific
instances.

   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.

   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.

   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 operating 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.

               Equivalent Taxable Estimated Current Return Tables

   As of the date of the Prospectus,  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
(where  applicable)  using the  published  Federal  and  State tax rates  (where
applicable)  scheduled to be in effect in 1998. They  incorporate  increased tax
rates  for  higher   income   taxpayers   that  were  included  in  the  Revenue
Reconciliation Act of 1993. These tables illustrate approximately what you would
have to earn on taxable  investments to equal the tax-exempt  estimated  current
return in your income tax bracket. The tables assume that Federal taxable income
is equal to State  income  subject to tax,  and for cases in which more than one
State rate falls within a Federal bracket,  the State rate  corresponding to the
highest  income  within that Federal  bracket is used.  The  combined  State and
Federal tax rates shown  reflect the fact that State tax payments are  currently
deductible  for Federal tax purposes.  The tables do not reflect any local taxes
or any taxes  other  than  personal  income  taxes.  The  tables do not show the
approximate  taxable  estimated current returns for individuals that are subject
to the alternative minimum tax. The taxable equivalent estimated current returns
may be somewhat  higher than the equivalent  returns  indicated in the following
tables  for those  individuals  who have  adjusted  gross  incomes  in excess of
$124,500.  The tables do not reflect the effect of Federal or State  limitations
(if any) on the amount of allowable  itemized  deductions  and the deduction for
personal or dependent  exemptions or any other credits.  These  limitations were
designed to phase out certain  benefits of these  deductions  for higher  income
taxpayers. These limitations,  in effect, raise the marginal maximum Federal tax
rate to  approximately  44  percent  for  taxpayers  filing a joint  return  and
entitled  to four  personal  exemptions  and to  approximately  41  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 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. See
"Federal Tax Status" in  Prospectus  Part II for a more  detailed  discussion of
recent Federal tax legislation.
<TABLE>
<CAPTION>

   
MISSOURI

         Taxable Income ($1,000's)                                 Tax-Exempt Estimated Current Return
     ----------------------------------        ---------------------------------------------------------------------------
          Single           Joint          Tax          4 1/2%      5%      5 1/2%      6%      6 1/2%      7%   7 1/2%
          Return          Return       Bracket*                 Equivalent Taxable Estimated Current Return
     -----------------------------------------------------------------------------------------------------------------------
<S>  <C>     <C>      <C>       <C>         <C>         <C>       <C>       <C>       <C>       <C>       <C>       <C>  
     $   0 - 25.35    $     0 - 42.35       19.4%       5.58%     6.20%     6.82%     7.44%     8.06%     8.68%     9.31%
     25.35 - 61.40     42.35 - 102.30       32.3        6.65      7.39      8.12      8.86      9.60     10.34     11.08
     61.40 - 128.10   102.30 - 155.95       35.1        6.93      7.70      8.47      9.24     10.02     10.79     11.56
     128.10 - 278.45  155.95 - 278.45       39.8        7.48      8.31      9.14      9.97     10.80     11.63     12.46
       Over 278.45        Over 278.45       43.2        7.92      8.80      9.68     10.56     11.44     12.32     13.20

- -----------------
*Combined  State and Federal tax bracket was computed by taking into account the
deductibility  of  State  tax  in  determining   Federal  tax  and  the  limited
deductibility  of  Federal  tax in  determining  State  tax.  Specifically,  the
deduction  allowed for Federal  income tax  liability  may not exceed $5,000 and
$10,000 for single and joint taxpayers, respectively.  Accordingly, the combined
tax bracket  reflects the  cross-deductibility  of each tax in  determining  the
other only for levels of income corresponding to the 15% Federal tax bracket.
<CAPTION>

NEW JERSEY

         Taxable Income ($1,000's)                                 Tax-Exempt Estimated Current Return
     ----------------------------------        ---------------------------------------------------------------------------
          Single           Joint          Tax          4 1/2%      5%      5 1/2%      6%      6 1/2%      7%       7 1/2%
          Return          Return        Bracket                 Equivalent Taxable Estimated Current Return
     -----------------------------------------------------------------------------------------------------------------------
<S>  <C>     <C>      <C>      <C>          <C>         <C>       <C>       <C>       <C>       <C>       <C>       <C>  
     $   0 - 25.35    $    0 - 42.35        16.5%       5.39%     5.99%     6.59%     7.19%     7.78%     8.38%     8.98%
     25.35 - 61.40     42.35 - 102.30       32          6.62      7.35      8.09      8.82      9.56     10.29     11.03
     61.40 - 128.10   102.30 - 155.95       35.4        6.97      7.74      8.51      9.29     10.06     10.84     11.61
     128.10 - 278.45  155.95 - 278.45       40.1        7.51      8.35      9.18     10.02     10.85     11.69     12.52
       Over 278.45        Over 278.45       43.4        7.95      8.83      9.72     10.60     11.48     12.37     13.25
    
</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 Trusts and  returns  over  specified  periods  on other  similar  Van Kampen
American Capital  sponsored unit investment trusts with inflation rates and with
returns on taxable  investments such as corporate or U.S. Government bonds, bank
CDs and  money  market  accounts  or  money  market  funds,  each of  which  has
investment  characteristics  that may  differ  from  those of the  Trusts.  U.S.
Government  bonds,  for example,  are backed by the full faith and credit 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 Trusts are
described more fully in the Prospectus.
   
                              Missouri Risk Factors

   The following discussion regarding constitutional limitations and the economy
of the state of  Missouri  is  included  for the  purpose of  providing  general
information that may or may not affect issuers of the Bonds in Missouri.

   As a major  manufacturing,  financial,  and  agricultural  state,  Missouri's
economic health is tied closely to that of the nation.  The economic  outlook is
for continued improvement in fiscal year 1998. Missouri's personal income, which
directly impacts individual income tax and sales tax, rose at a 5.9% rate during
fiscal year 1997.  Personal  income in 1996 grew 5.6%. The Missouri  economy has
produced exceptional job growth over the past three years. Missouri's employment
stood at 2.8 million as of November  1997,  an  increase of over  317,000  since
January of 1993. At the end of November  1997, the state  unemployment  rate was
3.5% which compares favorably to the national unemployment rate of 4.3%.

   Agriculture is a significant  part of Missouri's  economy with an industry of
approximately  $5.0 billion in Fiscal Year 1997.  Missouri is among the nation's
leading livestock producers,  with livestock and related products accounting for
$2.5 billion of the state's agricultural receipts in Fiscal Year 1997.

   Balancing  Missouri's  budget in fiscal year 1997 was achieved  through sound
financial  management.  The growing economy  produced general revenues that were
better than projected.  The Governor and General Assembly adopted a conservative
State budget  meeting  mandated  expenditure  increases  and  providing  limited
funding for new and expanded  program.  In future years,  Missouri will focus on
controlling  the growth of mandatory  programs  though welfare  reform,  managed
care,  and  cost-effective   alternatives.   Major  funding  priorities  include
education,   corrections,   economic  development,   mental  health,  children's
services, and repairs and upgrades to existing state facilities.

   The State of Missouri completed fiscal year 1997 in sound financial condition
due to strong revenue  collections  and efficient  management of State programs.
Net general revenue collections  increased over fiscal year 1996 due to a strong
national and state economy.  Expenditures  were lower than anticipated in fiscal
year 1997 as prudent state agency  managers did not use all  available  spending
authority.  General  revenue  collections  in fiscal  year  1997  were  $5,843.4
million,  7.4% above fiscal year 1996 collections.  General Revenue expenditures
in fiscal year 1997 for the operating budget were $5,926.1  million.  The fiscal
year 1998 budget is  conservatively  based upon general  revenue  collections of
$6,029.6 million.

   Preliminary   calculations  made  pursuant  to  Article  X  of  the  Missouri
Constitution  show that total state  revenues for Fiscal Year 1997  exceeded the
total state  revenue limit by $318.8  million.  Therefore,  in  accordance  with
Article X, the entire  amount of excess  revenues  will be  refunded to Missouri
income  taxpayers in calendar year 1998. The Office of  Administration  projects
that  total  state  revenues  will  exceed  the  total  state  revenue  limit by
approximately  $125  million in Fiscal Year 1998.  The Office of  Administration
projects  that revenues will not exceed the revenue limit in Fiscal Year 1999 if
the Governor's recommended tax reductions of $120 million are enacted.  Together
with the 1997 tax cut,  this brings the total tax reduction for Fiscal Year 1999
to $375 million.

     The State ended fiscal year 1997 with an ending balance  (surplus) of $49.5
million for the General  Revenue Fund. An  appropriation  of $86.55  million was
transferred to the Budget  Stabilization  Fund to bring that Fund to 2.5% of net
general  revenue  collections.  The ending  General Fund balance for fiscal year
1998 is projected at $172.4 million.

   Missouri  will  continue  to  see  reduced   desegregation   costs.   Federal
court-ordered  payments  for the St. Louis and Kansas City  desegregation  plans
were  $254.9  million in fiscal  year 1997  which is about  3.9% of the  State's
general revenue budget. The estimate for fiscal year 1998 is $255.9 million.  In
Fiscal Year 1999,  ongoing  savings  totaling $91.7 million from Kansas City and
$2.1  million  from St.  Louis have been used to boost state aid to all Missouri
schools.  In addition,  cumulative  one-time  savings of $77.8 million have been
redirected to Missouri schools. State law requires that desegregation savings go
toward the school foundation formula.

   As  of  December  31,  1997,   the  state  has  spent  $3.1  billion  on  the
desegregation  cases in St.  Louis and Kansas  City.  At the end of Fiscal  Year
1998,  that total will reach an estimated $3.2 billion.  The  appropriation  for
Fiscal Year 1998 is $264  million and the  revised  estimate is $255.9  million.
Desegregation expenditures, court orders, and other developments are continually
monitored  to provide  the best  possible  anticipation  and  forecast of future
costs.

   State  desegregation  costs  could  significantly  be  affected  by  a  state
determination of liability for costs incurred by the Special School District for
Phase I part-time transfer students. If a liability is determined,  amounts from
retroactive  claims and accrued  interest (if any),  could be  significant.  For
Kansas City, under the terms of a settlement  agreement  approved by the federal
district court on March 25, 1997,  state  court-ordered  desegregation  payments
will end in Fiscal Year 1999. The payment schedule is $110 million, $105 million
and $99 million for Fiscal Year's 1997, 1998 and 1999, respectively.
   Missouri  voters have approved  constitutional  amendments  providing for the
issuance of general  obligation bonds used for a number of purposes.  The amount
of  general  obligation  debt that can be issued by the State is  limited to the
amount  approved by popular  vote plus the amount of $1 million.  Total  general
obligation  bonds issued as of November 30, 1997, was $1,147.4  million of which
$979.4 was outstanding.  As of November 30, 1997, total revenue bonds issued was
$148.5 million with $114.68 million outstanding.  Total state indebtedness as of
November 30, 1997, was $1,624,746,207 with $1,289,911,009 outstanding.

   As of January 1, 1998,  $194,465,000  principal  remains  outstanding  of the
$200,000,000  issued fourth state building bonds (approved in August 1994);  and
$128,590,000  principal  remains  outstanding of the  $439,494,240  issued water
pollution control bonds (both amounts excluding refunding  issuances).  With the
final $75 million  issuance on December 1, 1987, all $600 million in third state
building bonds authorized by Missouri voters in 1982 were issued. With the final
issuance in fiscal  year 1998,  Missouri  will have  issued all $250  million in
fourth state building bonds authorized by Missouri voters.

   In fiscal  year  1997,  Missouri  invested  a total of $276.5  million in its
capital assets with  appropriations  for maintenance and  construction  projects
throughout  the State.  Appropriations  for fiscal  year 1998 are  estimated  at
$237.6  million.  Capital  improvements  of $192.5 million are  recommended  for
fiscal years 1998-99 biennial budget. Of this amount, $20.8 million is for vital
maintenance and repairs to state-owned facilities to initiate the voter-approved
maintenance  funding  mechanism.  Also included is $171.8  million for planning,
major renovation,  new construction,  land acquisition,  and other improvements.
Amounts  are  designated  to prison  construction,  projects at  elementary  and
secondary education institutions, and facilities for veterans.

   The State's  general  obligation bond issues received triple "A" ratings from
Moody's Investors Service, Inc., Standard & Poor's Rating Group, and Fitch IBCA,
Inc.  (formerly Fitch Investors  Service,  L.P.).  Missouri is one of only eight
states that have this rating from all three rating organizations. Although these
ratings  indicate  that the State of Missouri  is in  relatively  good  economic
health,  there can be no assurance  that this will  continue or that  particular
bond  issues  may not be  adversely  affected  by  changes in the State or local
economic or political conditions.

   The  foregoing  information  constitutes  only a brief summary of some of the
general  factors which may impact certain  issuers of Bonds and does not purport
to be a complete or exhaustive  description  of all adverse  conditions to which
the  issuers  of  obligations  held by the  Missouri  IM-IT  Trust are  subject.
Additionally, many factors including national economic, social and environmental
policies and conditions,  which are not within the control of the issuers of the
Bonds,  could affect or could have an adverse impact on the financial  condition
of the State and various  agencies  and  political  subdivisions  located in the
State.  The Sponsor is unable to predict  whether or to what extent such factors
or other  factors  may affect the  issuers  of the  Bonds,  the market  value or
marketability of the Bonds or the ability of the respective issuers of the Bonds
acquired by the  Missouri  IM-IT Trust to pay  interest on or  principal  of the
Bonds.

                             New Jersey Risk Factors

   The New Jersey  IM-IT Trust  consists of a portfolio  of Bonds.  The Trust is
therefore  susceptible to political,  economic or regulatory  factors  affecting
issuers of the Bonds. The following information provides only a brief summary of
some of the complex factors affecting the financial situation in New Jersey (the
"State") and is derived from sources that are  generally  available to investors
and is believed to be accurate. It is based in part on information obtained from
various State and local agencies in New Jersey. No independent  verification has
been made of any of the following information.

   New Jersey is the ninth largest state in population and the fifth smallest in
land  area.  With an average of 1,071  people  per square  mile,  it is the most
densely  populated of all the states.  The State's economic base is diversified,
consisting of a variety of manufacturing,  construction and service  industries,
supplemented by rural areas with selective commercial agriculture. Historically,
New Jersey's average per capita income has been well above the national average,
and in 1995,  the State ranked  second  among the states in per capita  personal
income ($29,248).

   The New Jersey  Economic  Policy  Council,  a statutory arm of the New Jersey
Department  of Commerce  and  Economic  Development,  has reported in New Jersey
Economic  Indicators,  a monthly  publication  of the New Jersey  Department  of
Labor, Division of Labor Market and Demographic Research, that in 1988 and 1989,
employment  in New  Jersey's  manufacturing  sector  failed to benefit  from the
export boom  experienced by many Midwest states and the State's service sectors,
which had fueled the  State's  prosperity  since  1982,  lost  momentum.  In the
meantime,  the prolonged fast growth in the State in the mid 1980s resulted in a
tight labor market situation, which has led to relatively high wages and housing
prices.  This  means  that,  while  the  incomes  of New  Jersey  residents  are
relatively  high,  the State's  business  sector has become more  vulnerable  to
competitive pressures.

   The onset of the  national  recession  (which  officially  began in July 1990
according to the National Bureau of Economic Research) caused an acceleration of
New Jersey's job losses in  construction  and  manufacturing.  In addition,  the
national  recession  caused an employment  downturn in such  previously  growing
sectors as wholesale trade,  retail trade,  finance,  utilities and trucking and
warehousing. Reflecting the downturn, the rate of unemployment in the State rose
from a low of 3.6%  during  the first  quarter of 1989 to an  estimated  4.9% in
December  1997,  which is higher than the  national  average of 4.6% in December
1997.  Economic  recovery  is likely to be slow and uneven in New  Jersey,  with
unemployment  receding at a correspondingly slow pace, due to the fact that some
sectors may lag due to continued excess capacity. In addition, employers even in
rebounding  sectors can be expected to remain  cautious  about hiring until they
become convinced that improved business will be sustained.  Also,  certain firms
will continue to merge or downsize to increase profitability.

   Debt Service.  The primary method for State financing of capital  projects is
through the sale of the general  obligation bonds of the State.  These bonds are
backed by the full faith and credit of the State tax revenues and certain  other
fees are pledged to meet the  principal  and interest  payments and if provided,
redemption premium payments, if any, required to repay the bonds. As of June 30,
1996,  there was a total authorized bond  indebtedness of  approximately  $10.31
billion,  of which $3.69 billion was issued and  outstanding,  $4.76 billion was
retired  (including  bonds for which provision for payment has been made through
the sale and issuance of refunding  bonds) and $1.86 billion was  unissued.  The
appropriation for the debt service  obligation on such outstanding  indebtedness
is $446.9 million for Fiscal Year 1997.

   New Jersey's Budget and Appropriation  System. The State operates on a fiscal
year beginning July 1 and ending June 30. At the end of Fiscal Year 1993,  there
was a surplus  in the  State's  general  fund  (the  fund  into  which all State
revenues  not  otherwise  restricted  by statute  are  deposited  and from which
appropriations  are made) of $937.4  million.  At the end of Fiscal  Year  1994,
there was a surplus in the general fund of $926.0 million.  At the end of Fiscal
Year 1995,  there was a surplus in the  general  fund of $569.2  million.  It is
estimated  that New Jersey  closed  its Fiscal  Year 1996 with a surplus of $442
million and Fiscal Year 1997 with a surplus of $276.2 million.

   In order to  provide  additional  revenues  to  balance  future  budgets,  to
redistribute  school aid and to contain real property  taxes,  on June 27, 1990,
and July 12,  1990,  Governor  Florio  signed  into law  legislation  which  was
estimated to raise approximately $2.8 billion in additional taxes (consisting of
$1.5  billion  in sales and use taxes and $1.3  billion  in income  taxes),  the
biggest tax hike in New Jersey history.  There can be no assurance that receipts
and collections of such taxes will meet such estimates.

   The first part of the tax hike took effect on July 1, 1990, with the increase
in the  State's  sales  and use tax rate  from 6% to 7% and the  elimination  of
exemptions for certain products and services not previously  subject to the tax,
such as telephone calls, paper products (which has since been reinstated), soaps
and detergents,  janitorial services, alcoholic beverages and cigarettes. At the
time of enactment,  it was projected that these taxes would raise  approximately
$1.5 billion in additional  revenue.  Projections and estimates of receipts from
sales and use taxes,  however,  have been  subject to variance in recent  fiscal
years.

   The second part of the tax hike took  effect on January 1, 1991,  in the form
of an increased  state income tax on individuals.  At the time of enactment,  it
was  projected  that this  increase  would raise  approximately  $1.3 billion in
additional income taxes to fund a new school aid formula, a new homestead rebate
program and state  assumption of welfare and social services costs.  Projections
and estimates of receipts from income taxes,  however, have also been subject to
variance  in recent  fiscal  years.  Under  the  legislation,  income  tax rates
increased  from their  previous  range of 2% to 3.5% to a new range of 2% to 7%,
with the higher rates applying to married couples with incomes exceeding $70,000
who file joint returns, and to individuals filing single returns with incomes of
more than $35,000.

   The Florio administration had contended that the income tax package will help
reduce   local   property  tax   increases  by  providing   more  state  aid  to
municipalities.  Under  the  income  tax  legislation,  the  State  will  assume
approximately $289 million in social services costs that previously were paid by
counties and municipalities and funded by property taxes. In addition, under the
new formula for funding school aid, an extra $1.1 billion is proposed to be sent
by the State to school  districts  beginning in 1991, thus reducing the need for
property tax increases to support education programs.

   Effective  July 1, 1992, the State's sales and use tax rate decreased from 7%
to 6%. Effective January 1, 1994, an across-the-board 5% reduction in the income
tax rates was enacted and effective January 1, 1995,  further reductions ranging
from 1% up to 10% in income tax rates took  effect.  Governor  Whitman  recently
signed  into  law  further  reductions  up to 15% for some  taxpayers  effective
January 1, 1996, completing her campaign promise to reduce income taxes by up to
30% within three years for most taxpayers.

   In June 1997,  Governor  Whitman  signed the New Jersey  Legislature's  $16.8
billion  budget for Fiscal Year 1998. The balanced  budget,  which includes $442
million in surplus, is $800 million more than the 1997 budget. Whether the State
can  achieve a balanced  budget  depends on its  ability to enact and  implement
expenditure reductions and to collect estimated tax revenues.

   Litigation.  The State is a party 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 cases  challenging  the following:  the
funding of teachers'  pension funds; the hospital  assessment  authorized by the
Health Care Reform Act of 1992;  the State's role in a consent order  concerning
the construction of a resource  facility in Passaic County;  the State's actions
regarding  alleged  chromium  contamination  of  State-owned  property in Hudson
County;  the  constitutionality  of  annual  A-901  hazardous  and  solid  waste
licensure  renewal fees collected by the Department of Environmental  Protection
and Energy;  the State's funding formula that attempts to close the spending gap
between poor urban school districts and wealthy suburban  districts;  the use by
the State of  assessments  on  certain  insurers  to retire  debt of the  Market
Transition  Fund,  the manner in which  mental  health  services are provided to
inmates with serious mental  disorders who are confined within the facilities of
the  Department of  Corrections;  the spousal  impoverishment  provisions of the
Medicare  Catastrophic  Coverage Act;  Medicaid  hospital  reimbursements  since
February,  1995; and the efforts to revitalize  Atlantic City through the design
and construction of a highway and tunnel.  Adverse  judgments in these and other
matters could have the  potential for either a significant  loss of revenue or a
significant unanticipated expenditure by the State.

   At any given  time,  there are  various  numbers of claims and cases  pending
against the State,  State agencies and employees,  seeking  recovery of monetary
damages  that are  primarily  paid out of the fund  created  pursuant to the New
Jersey  Tort  Claims Act.  In  addition,  at any given  time,  there are various
numbers of contract claims against the State and State agencies seeking recovery
of monetary  damages.  The State is unable to estimate  its  exposure  for these
claims.

   Debt Ratings.  For many years prior to 1991, both Moody's Investors  Service,
Inc. and Standard and Poor's Corporation had rated New Jersey general obligation
bonds "Aaa" and "AAA,"  respectively.  On July 3, 1991,  however,  Standard  and
Poor's  Corporation  downgraded New Jersey general obligation bonds to "AA+." On
June 4,  1992,  Standard  and  Poor's  Corporation  placed  New  Jersey  general
obligation  bonds on  CreditWatch  with  negative  implications,  citing  as its
principal reason for its caution the unexpected denial by the Federal Government
of New Jersey's  request for $450 million in retroactive  Medicaid  payments for
psychiatric hospitals.  These funds were critical to closing a $1 billion gap in
the  State's  $15  billion  budget for fiscal  year 1992 which ended on June 30,
1992.  Under New Jersey state law, the gap in the current  budget must be closed
before  the new  budget  year  began  on  July  1,  1992.  Standard  and  Poor's
Corporation  suggested  the State could close fiscal  1992's budget gap and help
fill fiscal 1993's hole by a reversion of $700 million of pension  contributions
to its general fund under a proposal to change the way the State  calculates its
pension liability.  On July 6, 1992, Standard and Poor's Corporation  reaffirmed
its "AA+" rating for New Jersey  general  obligation  bonds and removed the debt
from its  CreditWatch  list,  although  it stated  that New  Jersey's  long-term
financial outlook was negative. Standard & Poor's Corporation was concerned that
the State was entering the 1993 fiscal year that began July 1, 1992, with a slim
$26 million  surplus and  remained  concerned  about  whether the sagging  State
economy would recover quickly enough to meet lawmakers' revenue projections.  It
also remained  concerned  about the recent  federal  ruling leaving in doubt how
much the State was due in retroactive Medicaid  reimbursements and a ruling by a
federal  judge,  now on appeal,  of the State's  method for paying for uninsured
hospital patients. However, on July 27, 1994, S&P announced that it was changing
the State's  outlook from negative to stable due to a brightening of the State's
prospects  as a result of Governor  Whitman's  effort to trim  spending  and cut
taxes, coupled with an improving economy. S&P reaffirmed its "AA+" rating at the
same time.

   On August 24, 1992,  Moody's Investors  Service,  Inc.  downgraded New Jersey
general  obligation  bonds to "Aa1,"  stating  that the  reduction  reflected  a
developing  pattern of reliance on  nonrecurring  measures to achieve  budgetary
balance,  four years of financial  operations  marked by revenue  shortfalls and
operating  deficits,  and the likelihood that serious financial  pressures would
persist.  On August 5, 1994, Moody's reaffirmed its "Aa1" rating,  citing on the
positive side New Jersey's broad-based economy,  high income levels,  history of
maintaining  a positive  financial  position and moderate  (albeit  rising) debt
ratios, and, on the negative side, a continued reliance on one-time revenues and
a dependence on pension-related savings to achieve budgetary balance.
    

                       Estimated Cash Flows to Unitholders

   The tables  below set forth the per Unit  estimated  monthly and  semi-annual
distributions  of interest and  principal to  Unitholders.  The tables assume no
changes in expenses,  no changes in the current  interest  rates,  no exchanges,
redemptions,  sales or prepayments of the underlying  Bonds prior to maturity or
expected  retirement date and the receipt of principal upon maturity or expected
retirement  date.  To  the  extent  the  foregoing   assumptions  change  actual
distributions will vary.
<TABLE>
<CAPTION>
   
   MISSOURI
      Monthly
                                                       Estimated                 Estimated               Estimated
               Distribution Dates                      Interest                  Principal                 Total
                  (Each Month)                       Distribution              Distribution            Distribution
      ----------------------------------------------------------------------------------------------------------------
<S>                <C>                                   <C>                    <C>                      <C>    
      May          1998                                  $ 4.80                                          $  4.80
      June         1998  - September  2007                 3.79                                             3.79
      October      2007                                    3.68                  $ 83.22                   86.90
      November     2007  - September  2008                 3.43                                             3.43
      October      2008                                    3.22                   166.44                  169.66
      November     2008  - February   2018                 2.74                                             2.74
      March        2018                                    2.63                    83.22                   85.85
      April        2018  - June       2019                 2.39                                             2.39
      July         2019                                    2.30                    83.23                   85.53
      August       2019  - April      2020                 2.09                                             2.09
      May          2020                                    1.53                   166.44                  167.97
      June         2020  - August     2021                 1.42                                             1.42
      September    2021                                    1.42                    49.94                   51.36
      October      2021  - May        2022                 1.42                                             1.42
      June         2022                                    1.22                   166.44                  167.66
      July         2022  - June       2027                  .75                                              .75
      July         2027                                     .55                   166.44                  166.99
      August       2027  - June       2028                  .07                                              .07
      July         2028                                     .03                    33.29                   33.32

      Semi-annual
               Distribution Dates
                (Each January and                      Estimated                 Estimated               Estimated
                   July Unless                         Interest                  Principal                 Total
              Otherwise Specified)                   Distribution              Distribution            Distribution
      ----------------------------------------------------------------------------------------------------------------
<S>                <C>                                   <C>                    <C>                      <C>  
      July         1998                                  $12.50                                          $ 12.50
      January      1999  - July       2007                22.96                                            22.96
      October      2007                                                          $ 83.22                   83.22
      January      2008                                   21.78                                            21.78
      July         2008                                   20.82                                            20.82
      October      2008                                                           166.44                  166.44
      January      2009                                   18.50                                            18.50
      July         2009  - January    2018                16.60                                            16.60
      March        2018                                                            83.22                   83.22
      July         2018                                   15.11                                            15.11
      January      2019                                   14.52                                            14.52
      July         2019                                   14.43                    83.23                   97.66
      January      2020                                   12.70                                            12.70
      May          2020                                                           166.44                  166.44
      July         2020                                   10.78                                            10.78
      January      2021  - July       2021                 8.64                                             8.64
      September    2021                                                            49.94                   49.94
      January      2022                                    8.64                                             8.64
      June         2022                                                           166.44                  166.44
      July         2022                                    7.78                                             7.78
      January      2023  - January    2027                 4.60                                             4.60
      July         2027                                    4.39                   166.44                  170.83
      January      2028                                     .44                                              .44
      July         2028                                     .40                    33.29                   33.69
<CAPTION>

   NEWJERSEY
   Monthly
                                                       Estimated                 Estimated               Estimated
               Distribution Dates                      Interest                  Principal                 Total
                  (Each Month)                       Distribution              Distribution            Distribution
      ----------------------------------------------------------------------------------------------------------------
<S>                <C>                                   <C>                    <C>                      <C>  
      May          1998                                  $ 4.80                                          $  4.80
      June         1998  - June       2008                 3.79                                             3.79
      July         2008                                    3.69                  $ 83.25                   86.94
      August       2008  - January    2010                 3.45                                             3.45
      February     2010                                    3.28                   133.20                  136.48
      March        2010  - June       2021                 2.89                                             2.89
      July         2021                                    2.77                    93.24                   96.01
      August       2021  - February   2023                 2.51                                             2.51
      March        2023                                    2.31                   166.50                  168.81
      April        2023  - December   2023                 1.85                                             1.85
      January      2024                                    1.73                    99.90                  101.63
      February     2024  - June       2024                 1.47                                             1.47
      July         2024                                    1.47                    36.63                   38.10
      August       2024  - June       2027                 1.47                                             1.47
      July         2027                                    1.28                   166.50                  167.78
      August       2027  - December   2027                  .83                                              .83
      January      2028                                     .77                    53.28                   54.05
      February     2028  - June       2028                  .62                                              .62
      July         2028                                     .41                   166.50                  166.91
<CAPTION>

      Semi-annual
               Distribution Dates
                 (Each July and                        Estimated                 Estimated               Estimated
                 January Unless                        Interest                  Principal                 Total
              Otherwise Specified)                   Distribution              Distribution            Distribution
      ---------------------------------------------------------------------------------------------------------------
<S>                <C>                                   <C>                    <C>                      <C>  
      July         1998                                  $12.51                                          $ 12.51
      January      1999  - January    2008                22.98                                            22.98
      July         2008                                   22.87                  $ 83.25                  106.12
      January      2009  - January    2010                20.91                                            20.91
      February     2010                                                           133.20                  133.20
      July         2010                                   17.90                                            17.90
      January      2011  - January    2021                17.50                                            17.50
      July         2021                                   17.39                    93.24                  110.63
      January      2022  - January    2023                15.23                                            15.23
      March        2023                                                           166.50                  166.50
      July         2023                                   12.35                                            12.35
      January      2024                                   11.10                    99.90                  111.00
      July         2024                                    8.91                    36.63                   45.54
      January      2025  - January    2027                 8.91                                             8.91
      July         2027                                    8.73                   166.50                  175.23
      January      2028                                    5.01                    53.28                   58.29
      July         2028                                    3.57                   166.50                  170.07
    
</TABLE>

<PAGE>


                                                                             S-1
                       CONTENTS OF REGISTRATION STATEMENT

         This Amendment of Registration Statement comprises the following papers
and documents:

         The facing sheet
         The Cross-Reference sheet
         The Prospectus
         The signatures
         The consents of independent public accountants, ratings services
           and legal counsel

The following exhibits:

1.1 Copy of Trust Agreement.

1.5 Copy of Agreement Among Underwriters.

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

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

3.3 Opinions and consent of counsel as to New York income tax status of the
    Fund under New York law.

3.4 Opinion and consent of counsel as to income tax status to New Jersey 
    residents of Units of the New Jersey IM-IT Trust.

4.1 Consent of Interactive Data Corp.

4.2 Consent of Standard & Poor's.

4.3 Consent of Independent Certified Public Accountants.

EX-27    Financial Data Schedules


<PAGE>


                                   SIGNATURES

         The Registrant, Insured Municipals Income Trust, 229th Insured
Multi-Series hereby identifies Insured Municipals Income Trust, 77th Insured
Multi-Series and Insured Municipals Income Trust and Investors' Quality
Tax-Exempt Trust, Multi-Series 189 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 quality 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.

         P9rsuant to the requirements of the Securities Act of 1933, the
Registrant, Insured Municipals Income Trust, 229th Insured Multi-Series has duly
caused this Amendment to the Registration Statement to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Chicago and State
of Illinois on the 30th day of March, 1998.

                              INSURED MUNICIPALS INCOME TRUST
                                229th
                               INSURED MULTI-SERIES

                              By VAN KAMPEN AMERICAN CAPITAL DISTRIBUTORS, INC.


                              By GINA M. COSTELLO
                                   Assistant Secretary

         Pursuant to the requirements of the Securities Act of 1933, this
Amendment to the Registration Statement has been signed below on March 30, 1998
by the following persons who constitute a majority of the Board of Directors of
Van Kampen American Capital Distributors, Inc.

        SIGNATURE                                  TITLE

Don G. Powell                       Chairman and Chief Executive )
                                      Officer                    )

John H. Zimmerman                   President and Chief          )
                                      Operating Officer

Ronald A. Nyberg                    Executive Vice President and )
                                      General Counsel

William R. Rybak                    Executive Vice President and )
                                      Chief Financial Officer    )

GINA M. COSTELLO                    (Attorney-in-fact*)

- --------------------------------------------------------------------------------
* An executed copy of each of the related powers of attorney was filed with the
Securities and Exchange Commission in connection with the Registration Statement
on Form S-6 of Van Kampen American Capital Equity Opportunity Trust, Series 64
(file No. 33-33087) and Van Kampen American Capital Equity Opportunity Trust,
Series 87 (file No. 333-44581).

<PAGE>


                                                                     EXHIBIT 1.1


                         INSURED MUNICIPALS INCOME TRUST
                           229TH INSURED MULTI-SERIES

                                 TRUST AGREEMENT

                                                          Dated:  March 30, 1998

         This Trust Agreement between Van Kampen American Capital Distributors,
Inc., as Depositor, American Portfolio Evaluation Services, a division of Van
Kampen American Capital Investment Advisory Corp., as Evaluator, and The Bank of
New York, as Trustee, sets forth certain provisions in full and incorporates
other provisions by reference to the document entitled "Standard Terms and
Conditions of Trust, For Van Kampen American Capital Distributors, Inc.
Tax-Exempt Trust, Dated March 16, 1995" (herein called the "Standard Terms and
Conditions of Trust"), and such provisions as are set forth in full and such
provisions as are incorporated by reference constitute a single instrument. All
references herein to Articles and Sections are to Articles and Sections of the
Standard Terms and Conditions of Trust.

                                WITNESSETH THAT:

         In consideration of the premises and of the mutual agreements herein
contained, the Depositor and the Trustee agree as follows:

                                     PART I

                     STANDARD TERMS AND CONDITIONS OF TRUST

         Subject to the provisions of Part II hereof, all the provisions
contained in the Standard Terms and Conditions of Trust are herein incorporated
by reference in their entirety and shall be deemed to be a part of this
instrument as fully and to the same extent as though said provisions had been
set forth in full in this instrument.

                                     PART II

                      SPECIAL TERMS AND CONDITIONS OF TRUST

         The following special terms and conditions are hereby agreed to:

                   (a) The Bonds defined in Section 1.01(4), listed in the
         Schedules hereto, have been deposited in the Trusts under this Trust
         Agreement.

                   (b) The fractional undivided interest in and ownership of the
         various Trusts represented by each Unit thereof is the amount set forth
         under "Summary of Essential Financial Information-Fractional Undivided
         Interest in the Trust per Unit" in Prospectus Part I.

                   (c) The approximate amounts, if any, which the Trustee shall
         be required to advance out of its own funds and cause to be paid to the
         Depositor pursuant to Section 3.05 shall be the amount per Unit that
         the Trustee agreed to reduce its fee or pay Trust expenses set forth in
         the footnotes to the "Per Unit Information" for each Trust in
         Prospectus Part I times the number of units in such Trust referred to
         in Part II (b) of this Trust Agreement.

                   (d) The First General Record Date and the amount of the
         second distribution of funds from the Interest Account of each Trust
         shall be the record date for the Interest Account and the amount set
         forth under "Per Unit Information" for each Trust in Prospectus Part I.

                   (e) The First Settlement Date shall be the date set forth
         under "Summary of Essential Financial Information--First Settlement
         Date" in Prospectus Part I.

                   (f) Any monies held to purchase "when issued" bonds will be
held in noninterest bearing accounts.

                   (g) The Evaluation Time for purpose of sale, purchase or
redemption of Units shall be 4:00 P.M. Eastern time.

                   (h) As set forth in Section 3.05, the Record Dates and
         Distribution Dates for each Trust are those dates set forth in the
         section entitled "Per Unit Information" for each Trust as appears in
         Prospectus Part I.

                   (i) As set forth in Section 3.15, the Evaluator's Annual
         Supervisory Fee shall be that amount set forth in "Summary of Essential
         Financial Information-Evaluator's Annual Supervisory Fee" in Prospectus
         Part I.

                   (j) As set forth in Section 4.03, the Evaluator's Annual
         Evaluation Fee shall be that amount, and computed on that basis, set
         forth in "Summary of Essential Financial Information-Evaluator's Annual
         Evaluation Fee" in Prospectus Part I

                   (k) The Trustee's annual compensation as set forth under
         Section 6.04, under each distribution plan shall be that amount as
         specified in Prospectus Part I under the section entitled "Per Unit
         Information" for each Trust and will include a fee to induce the
         Trustee to advance funds to meet scheduled distributions.

                   (l) The sixth paragraph of Section 3.05 is hereby revoked and
replaced by the following paragraph:

                                    Unitholders desiring to receive semi-annual
                  distributions and who purchase their Units prior to the Record
                  Date for the second distribution under the monthly plan of
                  distribution may elect at the time of purchase to receive
                  distributions on a semi-annual basis by notice to the Trustee.
                  Such notice shall be effective with respect to subsequent
                  distributions until changed by further notice to the Trustee.
                  Unitholders desiring to receive semi-annual distributions and
                  who purchase their Units prior to the Record Date for the
                  first distribution may elect at the time of purchase to
                  receive distributions on a semi-annual basis by notice to the
                  Trustee. Such notice shall be effective with respect to
                  subsequent distributions until changed by further notice to
                  the Trustee. Changes in the plan of distribution will become
                  effective as of opening of business on the day after the next
                  succeeding semi-annual Record Date and such distributions will
                  continue until further notice.

                   (m) Sections 8.02(d) and 8.02(e) are hereby revoked and 
         replaced with the following:

                            (d) distribute to each Unitholder of such Trust such
                  holder's pro rata share of the balance of the Interest Account
                  of such Trust;

                            (e) distribute to each Unitholder of such Trust such
                  holder's pro rata share of the balance of the Principal
                  Account of such Trust; and



<PAGE>





         IN WITNESS WHEREOF, Van Kampen American Capital Distributors, Inc. has
caused this Trust Agreement to be executed by one of its Vice Presidents or
Assistant Vice Presidents and its corporate seal to be hereto affixed and
attested by its Secretary or one of its Vice Presidents or Assistant
Secretaries, American Portfolio Evaluation Services, a division of Van Kampen
American Capital Investment Advisory Corp., has caused this Trust Indenture and
Agreement to be executed by its President or one of its Vice Presidents and its
corporate seal to be hereto affixed and attested to by its Secretary, its
Assistant Secretary or one of its Assistant Vice Presidents and The Bank of New
York, has caused this Trust Agreement to be executed by one of its Vice
Presidents and its corporate seal to be hereto affixed and attested to by one of
its Vice Presidents, Assistant Vice Presidents or Assistant Treasurers; all as
of the day, month and year first above written.

                            VAN KAMPEN AMERICAN CAPITAL DISTRIBUTORS, INC.

                            By JAMES J. BOYNE
                               Vice President, Associate General Counsel
                               and Assistant Secretary
(SEAL)
Attest:

By  CATHY NAPOLI
    Assistant Secretary

                                   AMERICAN PORTFOLIO EVALUATION SERVICE,
                                   a division of Van Kampen American Capital
                                   Investment Advisory Corp.

                            By DENNIS J. MCDONNELL
                               President
(SEAL)
Attest:

By  JAMES J. BOYNE
    Assistant Secretary
                                   THE BANK OF NEW YORK

By  JEFFREY BIESELIN
    Vice President

(SEAL)
Attest:

By  JEFFREY COHEN
    Assistant Treasurer


<PAGE>


                          SCHEDULES TO TRUST AGREEMENT
                         SECURITIES INITIALLY DEPOSITED
                                       IN
           INSURED MUNICIPALS INCOME TRUST, 229TH INSURED MULTI-SERIES

(Note: Incorporated herein and made a part hereof as indicated below are the
corresponding "Portfolios" of each of the Trusts as set forth in the
Prospectus.)
<PAGE>

                                                                     EXHIBIT 1.5

                                                            Dated:  June 1, 1992


March 30, 1998


                       MASTER AGREEMENT AMONG UNDERWRITERS
                     FOR UNIT INVESTMENT TRUSTS SPONSORED BY
                 VAN KAMPEN AMERICAN CAPITAL DISTRIBUTORS, INC.

Van Kampen American Capital Distributors, Inc.
One Parkview Plaza
Oakbrook Terrace, Illinois 60181

Gentlemen:

            1. The Trust. We understand that you, Van Kampen American Capital
Distributors, Inc. (the "Sponsor"), are entering into this agreement (the
"Agreement") in counterparts with us and other firms who may be underwriters for
issues of various series of unit investment trusts for which you will act as
Sponsor. This Agreement shall apply to any offering after May 1, 1992 of units
of fractional undivided interest in such various series unit investment trusts
in which we elect to act as an underwriter (underwriters with respect to each
such trust being hereinafter called "Underwriters") after receipt of a notice
from you stating the name and size of the trust and that our participation as an
Underwriter in the proposed offering shall be subject to the provisions of this
Agreement. The issuer of the units of fractional undivided interests in a series
of a unit investment trust offered in any offering of units made pursuant to
this Agreement is hereinafter referred to as the "Trust" and the reference to
"Trust" in this Agreement applies only to such Trust, and such units of such
Trust offered are hereinafter called the "Units". Each Trust is or will be
registered as a "unit investment trust" under the Investment Company Act of 1940
(the "1940 Act") by appropriate filings with the Securities and Exchange
Commission (the "Commission"). Additionally, each Trust is or will be registered
with the Commission under the Securities Act of 1933 (the "1933 Act") on Form
S-6 or its successor forms, including a proposed form of prospectus (the
"Preliminary Prospectus").

         The registration statement as finally amended and revised at the time
it becomes effective is herein referred to as the "Registration Statement" and
the related prospectus is herein referred to as the "Prospectus", except that if
the prospectus filed by the Trust pursuant to Rule 424(b) under the 1933 Act
shall differ from the prospectus on file at the time the Registration Statement
shall become effective, the term "Prospectus" shall refer to the prospectus
filed pursuant to Rule 424(b) from and after the date on which it shall have
been filed.

         The following provisions of this Agreement shall apply separately to
each individual offering of Units by a Trust.

         We understand that as of the date upon which we have agreed to
underwrite Units of the Trust the Commission shall not have issued any order
preventing or restraining the use of any Preliminary Prospectus and, further,
that each Preliminary Prospectus shall conform in all material respects to the
requirements of the 1933 Act and the Rules and Regulations thereunder and, as of
its date, shall not include any untrue statement of a material fact or omit to
state a material fact necessary to make the statements therein not misleading;
and when the Registration Statement becomes effective, it and the Prospectus,
and any amendments or supplements thereto, will contain all statements that are
required to be stated therein in accordance with the 1933 Act and the Rules and
Regulations thereunder and will in all material respects conform to the
requirements of the 1933 Act and the Rules and Regulations thereunder, and
neither the Registration Statement nor the Prospectus, nor any amendment or
supplement thereto, will contain any untrue statement of a material fact or omit
to state a material fact required to be stated therein or necessary to make the
statements therein not misleading; provided, however, that you make no
representation or warranty as to information contained in or omitted from any
Preliminary Prospectus, the Registration Statement, the Prospectus or any such
amendment or supplement, in reliance upon and in conformity with, written
information furnished to you by or on behalf of any Underwriter specifically for
use in the preparation thereof.

            2. Designation and Authority of Representative. You are hereby
authorized to act as our representative (the "Representative") in connection
with all matters to which this Agreement relates and to take the action provided
herein to be taken by you as you may otherwise deem necessary or advisable. We
understand that we have no obligations under this Agreement with respect to any
Trust in which we choose not to participate as an Underwriter.

         You will be under no liability to us for any act or omission except for
obligations expressly assumed by you herein and no obligations on your part will
be implied or inferred herefrom. The rights and liabilities of the respective
parties hereto are several and not joint, and nothing herein or hereunder will
constitute then a partnership, association or separate entity.

            3. Profit or Loss in Acquisition of Securities. It is understood
that the acquisition of securities (the "Securities") for deposit in the
portfolio of the Trust shall be at your cost and risk. We acknowledge that you
will share with us any net deposit profits in the amounts and to the extent, if
any, indicated under "Sponsor and Underwriter Compensation" in the Prospectus.
For the purposes of determining the number of Units underwritten, we understand
that we will be credited for that number of Units set forth opposite our name in
the section entitled "Underwriting" in the prospectus.

         We agree that you shall have no liability (as Representative or
otherwise) with respect to the issue form, validity, legality, enforceability,
value of, or title to the Securities, except for the exercise of due care in
determining the genuineness of such Securities and the conformance thereof with
the descriptions and qualifications appearing in the Prospectus.

            4. Purchase of Units. Promptly after you make a determination to
offer Units of a Trust and you inquire as to whether we desire to participate in
such offering, we will advise you promptly as to the number of Units which we
will purchase or of our decision not to participate in such offering. Such
advice may be written or oral. The delivery to the Sponsor of a completed
Schedule A to this Agreement shall constitute adequate written advice. Oral
advice shall be binding but shall be promptly confirmed in writing by us by
means of telegraph, telegram or other form of wire or facsimile transmission.
Such written confirmation shall contain the information requested by Schedule A
to this Agreement. You may rely on and we hereby commit on the terms and
conditions of this Agreement to purchase and pay for the number of Units of the
Trust set forth in such advice (the "Unit Commitment"). Our Unit Commitment may
be increased only by mutual agreement between us and you at any time prior to
the date as of which the Trust Agreement for the Trust is executed (the "Date of
Deposit"). We agree that you in your sole discretion reserve the right to
decrease our Unit Commitment at any time prior to the Date of Deposit and if you
so elect to make such a decrease, you will notify us of such an election by
telephone and promptly confirm the same in writing.

         The price to be paid for such Units shall be the Public Offering Price
per Unit (as defined in the Prospectus) as first determined on the Date of
Deposit or such later determination on such Date of Deposit as you shall advise
us, less the sum per Unit indicated under "Sponsor and Underwriter Compensation"
in the Prospectus. Further, each Underwriter who underwrites that number of
Units indicated under "Sponsor and Underwriter Compensation" in the Prospectus
will receive from the Sponsor that additional compensation indicated under such
section of the Prospectus for each Unit it underwrites, providing the Trust size
is in excess of that number of Units, if any, indicated under such section of
the Prospectus. At the Date of Deposit, we will become the owner of the Units
and be entitled to the benefits (except for interest, if any, accruing from the
Date of Deposit to the First Settlement Date) as well as the risks inherent
therein. We acknowledge that those persons, if any, named in the Prospectus
under "Sponsor and Underwriter Compensation" are Managing or Co-Managing
Underwriters of the Trust, as indicated therein, and we acknowledge that those
persons specifically named therein will receive as additional compensation those
respective per Unit amounts set forth in such section of the Prospectus.

         You are authorized to retain custody of our Units until the 
Registration Statement relating thereto has become effective under the 1933 Act
and you shall have received payment from us for such Units.

         You are authorized to file an amendment to said Registration Statement
describing the Securities and furnishing information based thereon or relating
thereto and any further amendments or supplements to the Registration Statement
or Prospectus which you may deem necessary or advisable. We will furnish to you
upon your request such information as will be required to insure that the
Registration Statement and Prospectus are current insofar as they relate to us
and we thereafter continue to furnish you with such information as may be
necessary to keep current and correct the information previously supplied.

         We understand that the Trust will also take action with respect to the
offering and sale of Units in accordance with the Blue Sky or securities laws of
certain states in which it is proposed that the Units may be offered and sold.

            5. Public Offering. You agree that you will advise us promptly when
the Registration Statement has become effective, and we agree that when we are
advised that the Units are released for public offering, we will make a public
offering thereof by means of the Prospectus under the 1933 Act, as amended,
which describes the deposit of Securities and related information. The Public
Offering Price and the terms and conditions of the public offering shall be as
set forth in the Prospectus and shall rely with respect to the offering price of
the Securities upon the determination of the Evaluator named in the Prospectus.
Public advertisement of the offering, if any, shall be made by you on behalf of
the Underwriters on such date as you shall determine. We agree that before we
use any Trust advertising material which we have created, we will obtain your
prior approval to use such advertising materials.

            6. Public Offering Price. We agree that each day while this
Agreement is in effect and the evaluation of the Trust is made by the Evaluator
named in the Prospectus, we will contact you for such evaluation and of the
resultant Public Offering Price for the purpose of the offering and sale of the
respective Units to the public. We agree as required by Section 22(d) of the
1940 Act to offer and sell our Units at the current Public Offering Price
described in the Prospectus.

            7. Permitted Transactions. It is agreed that part or all of the
Units purchased by us may be sold to dealers, or other entities with whom we can
legally grant a concession or agency commission, only at the then effective
Public Offering Price, less the concession described in the Prospectus.

         From time to time prior to the termination of this Agreement, at your
Request, we will advise you of the number of our Units which remain unsold and,
at your request, we agree to deliver to you any of such unsold Units to be sold
for our account to retail accounts or, less the concession or agency commission
then effective, to dealers or others.

         If prior to the termination of this Agreement, or such earlier date as
you may determine and advise us thereof in writing, you shall purchase or
contract to purchase any of our Units or any Units issued in exchange therefor,
in the open market or otherwise, or if any such Units shall be tendered to the
Trustee for redemption because not effectively placed for investment by us, we
agree to repurchase such Units at a price equal to the total cost of such
purchase, including accrued interest and commissions, if any, and transfer taxes
on redelivery. Regardless of the amount paid on the repurchase of any such
Units, it is agreed that they may be resold by us only at the then effective
Public Offering Price.

         Until the termination of this Agreement, we agree that we will make no
purchase of Units other than (i) purchases provided for in this Agreement, (ii)
purchases approved by you and (iii) purchases as broker in executing unsolicited
orders.

            8. Compliance With Commission Order. We hereby agree as follows: (a)
we will refund all sales charges to purchasers of Units from us or any dealer
participating in the distribution of Units who purchased such Units from us if,
within ninety days from the time that the Registration Statement of the
respective Units under the 1933 Act shall have become effective, (i) the net
worth of the trust shall be reduced to less than 20% of the principal amount of
Securities originally deposited therein or (ii) the Trust shall have been
terminated; (b) you may instruct the Trustee on the Date of Deposit that, in the
event that redemption by any Underwriters of Units constituting part of any
unsold allotment of Units shall result in the Trust having a net worth of less
than 40% of the principal amount of Securities originally deposited therein, the
Trustee shall terminate the Trust in the manner provided in the Trust Indenture
and Agreement (as defined in the Prospectus) and distribute the Securities and
other assets of the Trust pursuant to the provisions of the Trust Indenture and
Agreement; and (c) in the event that the Trust shall have been terminated
pursuant to (b) above, we will refund any sales charges to any purchaser of such
Units who purchased from us, or purchased from a dealer participating in the
distribution of such Units who purchased such Units from us.
We authorize you to charge our account for all refunds of sales charges in
respect to our Units.

            9. Substitution of Underwriters. We authorize you to arrange for the
substitution hereunder of other persons, who may include you and us, for all or
any part of the commitment of any nondefaulting Underwriter with the consent of
such Underwriter, and of any defaulting Underwriter without the consent thereof,
upon such terms and conditions as you may deem advisable, provided that the
number of Units to be purchased by us shall not be increased without our consent
and that such substitution shall not in any way affect the liability of any
defaulting Underwriter to the other Underwriters for damages from such default,
nor relieve any other Underwriter of any obligation under this Agreement. The
expenses chargeable to the account of any defaulting Underwriter and not paid
for by it or by a person substituted for such Underwriter and any additional
losses or expenses arising from such default shall be considered to be expenses
under this Agreement and shall be charged against the accounts of the
nondefaulting Underwriters in proportion to their respective commitments.

           10. Termination. This Agreement shall terminate with respect to each
Trust which we have agreed to underwrite 30 days after the date on which the
public offering of the Units of such Trust is made in accordance with Section 5
hereof unless sooner terminated by you, provided that you may extend this
Agreement for not more than eleven successive periods of 30 days each upon
notice to us and each of the other Underwriters.

         Notwithstanding any settlement on the termination of this Agreement, we
agree to pay our share of any amount payable on account of any claim, demand or
liability which may be asserted against the Underwriters, or any of them, based
on the claim that the Underwriters constitute an association, unincorporated
business or other separate entity and our share of any expenses incurred by you
in defending against any such claim, demand or liability. We also agree to pay
any stamp taxes which may be assessed and paid after such settlement on account
of any Units received or sold hereunder for our account.

         Notwithstanding any termination of this Agreement, no sales of the 
Units shall be made by us at any time except in conformity with the provisions 
of Section 22(d) of the 1940 Act.

           11. Default by Other Underwriters. Default by any one or more of the
other Underwriters in respect of their several obligations under this Agreement
shall neither release you nor us from any of our respective obligations
hereunder.

           12. Notices. Notices hereunder shall by deemed to have been duly
given if mailed or telegraphed to us at our address set forth below, in the case
of notices to us, or to you at your address set forth at the head of this
Agreement, in the case of notices to you.

           13. Net Capital. You represent that you, and we represent that we,
are in compliance with the capital requirements of Rule 15c-3-1 promulgated by
the Commission under the Securities and Exchange Act of 1934, and we may, in
accordance with and pursuant to such Rule 15c-3-1, agree to purchase the amount
of Units to be purchased by you and us, respectively, under the Agreement.

           14. Miscellaneous. We confirm that we are a member in good standing
of the National Association of Securities Dealers, Inc.

         We confirm that we will take reasonable steps to provide the
Preliminary Prospectus or final Prospectus to any person making written request
therefor to us and to make the Preliminary Prospectus or the final Prospectus
available to each person associated with us expected to solicit customers'
orders for the Units prior to the effective registration date and the final
Prospectus if he is expected to offer the Units after the effective date. We
understand that you will supply us upon our request with sufficient copies of
such prospectuses to comply with the foregoing.



<PAGE>



         This Agreement is being executed by us and delivered to you in
duplicate. Upon your confirmation hereof and of agreements in identical form
with each of the other Underwriters, this Agreement shall constitute a valid and
binding contract between us.

                                                   Very truly yours,

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

Confirmed as of the date set forth at the          Indicated below our firm name
head of this Agreement                             and address exactly as we 
                                                   wish to appear in the
                                                   Prospectus

VAN KAMPEN AMERICAN CAPITAL DISTRIBUTORS, INC.

By____________________________                     _____________________________

Title__________________________                    _____________________________

                                                   -----------------------------






                                                                     EXHIBIT 3.1

                               CHAPMAN AND CUTLER
                             111 WEST MONROE STREET
                             CHICAGO, ILLINOIS 60603


                                 March 30, 1998


Van Kampen American Capital Distributors, Inc.
One Parkview Plaza
Oakbrook Terrace, Illinois  60181


Re: INSURED MUNICIPALS INCOME TRUST, 229TH INSURED MULTI-SERIES

Gentlemen:

         We have served as counsel for Van Kampen American Capital Distributors,
Inc., as Sponsor and Depositor of Insured Municipals Income Trust, 229th Insured
Multi-Series (hereinafter referred to as the "Fund"), in connection with the
preparation, execution and delivery of a Trust Agreement dated March 30, 1998
between Van Kampen American Capital Distributors, Inc., as Depositor, American
Portfolio Evaluation Services, a division of Van Kampen American Capital
Investment Advisory Corp., as Evaluator, and The Bank of New York, as Trustee,
pursuant to which the Depositor has delivered to and deposited Bonds listed in
the Schedules to the Trust Agreement with the Trustee and pursuant to which the
Trustee has issued to or on the order of the Depositor a certificate or
certificates representing Units of fractional undivided interest in and
ownership of the several Trusts of said Fund (hereinafter referred to as the
"Units") created under said Trust Agreement.

         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 Agreement and the
         execution and issuance of certificates evidencing the Units in the
         several Trusts of the Fund have been duly authorized; and

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



<PAGE>


         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (File No. 333-45163) 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



                                                                     EXHIBIT 3.2


                               CHAPMAN AND CUTLER
                             111 WEST MONROE STREET
                             CHICAGO, ILLINOIS 60603


                                 March 30, 1998


Van Kampen American Capital Distributors, Inc.
One Parkview Plaza
Oakbrook Terrace, Illinois  60181

The Bank of New York
101 Barclay Street
New York, New York 10286


         Re: INSURED MUNICIPALS INCOME TRUST, 229TH INSURED MULTI-SERIES

Gentlemen:

         We have acted as counsel for Van Kampen American Capital Distributors,
Inc., Depositor of Insured Municipals Income Trust, 229th Insured Multi-Series
(the "Fund"), in connection with the issuance of Units of fractional undivided
interest in the several trusts of said Fund (the "Trusts") under a Trust
Agreement dated March 30, 1998 (the "Indenture") between Van Kampen American
Capital Distributors, Inc., as Depositor, American Portfolio Evaluation
Services, a division of Van Kampen American Capital Investment Advisory Corp.,
as Evaluator, and The Bank of New York, as Trustee.

         In this connection, we have examined the Registration Statement, the
form of Prospectus proposed to be filed with the Securities and Exchange
Commission, the Indenture and such other instruments and documents as we have
deemed pertinent. For purposes of the following opinions, it is assumed that
each asset of the Trusts is debt the interest on which is excluded from gross
income for federal income tax purposes.

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

                   (i) Each Trust is not an association taxable as a corporation
         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 in the proportion that the
         number of Units of such Trust held by him bears to the total number of
         Units outstanding 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 of the respective Trust in the proportion described,
         and an 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 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 Unitholders, 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 respective Trust. In the
         case of such Unitholder who is a substantial user (and no other)
         interest received 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 Section 56(c) of the Code, and the branch profits tax
         imposed by Section 884 of the Code with respect 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 the Units represented by his Certificate. If a Bond is
         acquired with accrued interest, that portion of the price paid for the
         accrued interest is added to the tax basis of the Bond. When this
         accrued interest is received, it is treated as a return of capital and
         reduces the tax basis of the Bond. If a Bond is purchased for a
         premium, the amount of the premium is added to the tax basis of the
         Bond. Bond premium is amortized over the remaining term of the Bond,
         and the tax basis of the Bond is reduced each tax year by the amount of
         the premium amortized in that tax year. Accordingly, Unitholders must
         reduce the tax basis of their Units for their share of accrued interest
         received by the respective Trust, if any, on Bonds delivered after the
         Unitholders pay for their Units to the extent that such interest
         accrued on such Bonds before the date the Trust acquired ownership of
         the Bonds (and the amount of this reduction may exceed the amount of
         accrued interest paid to the seller) and, consequently, such
         Unitholders may have an increase in taxable gain or reduction in
         capital loss upon the disposition of such Units. In addition, such
         basis will be increased by the Unitholder's aliquot share of the
         accrued original issue discount (and market discount, if the Unitholder
         elects to include market discount in income as it accrues) with respect
         to each Bond held by the Trust with respect to which there was original
         issue discount at the time the Bond was issued (or which was purchased
         with market discount) and reduced by the annual amortization of bond
         premium, if any, on Bonds held by the Trust.

                  (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
         accrued interest received by the Trust, if any, on Bonds delivered
         after the Unitholders pay for their Units to the extent that such
         interest accrued on the Bonds before the date the Trust acquired
         ownership of the Bonds (and the amount of this reduction may exceed the
         amount of accrued interest paid to the seller), 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 the accrued original
         issue discount (and market discount, if the Unitholder elects to
         include market discount in income as it accrues) with respect to each
         Bond which, at the time the Bond was issued, had original issue
         discount (or which was purchased with market 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) We have examined the Municipal Bond Unit Investment Trust
         Insurance Policies, if any, issued to certain of the Trusts on the Date
         of Deposit by AMBAC Indemnity Assurance Corporation, Financial Guaranty
         Insurance Corporation or a combination thereof. Each such policy, or a
         combination of such policies, insures all bonds held by the Trustee for
         that particular Trust (other than bonds described in paragraph (vii))
         against default in the prompt payment of principal and interest. In our
         opinion, any amount paid under each said policy, or a combination of
         said policies, which represents 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 in normal course by the issuer of the defaulted
         Bonds provided that, at the time such policies are purchased, the
         amounts paid for such policies are reasonable, customary and consistent
         with the reasonable expectation that the issuer of the Bonds, rather
         than the insurer, will pay debt service on the Bonds. Paragraph (ii) of
         this opinion is accordingly applicable to insurance proceeds
         representing maturing interest.

                 (vii) Certain Bonds in the portfolios of certain of the Trusts
         have been insured by the issuers thereof against default in the prompt
         payment of principal and interest (the "Insured Bonds"). Insurance has
         been obtained for such Insured Bonds, or, in the case of a commitment,
         the Bonds will be ultimately insured under the terms of such an
         insurance policy, which are designated as issuer Insured Bonds on the
         portfolio pages of the respective Trusts in the Prospectus for the
         Fund, by the issuer of such Insured Bonds. Insurance on Insured Bonds
         is effective so long as such Insured Bonds remain outstanding. For each
         of these Insured Bonds, we have been advised that the aggregate
         principal amount of such Insured Bonds listed on the portfolio page for
         the respective Trust was acquired by the applicable Trust and are part
         of the series of such Insured Bonds listed in the aggregate principal
         amount. Based upon the assumption that the Insured Bonds of the Trust
         are part of the series covered by an insurance policy or, in the case
         of a commitment, will be ultimately insured under the terms of such an
         insurance policy, it is our opinion that any amounts received by the
         applicable Trust representing maturing interest on such Insured Bonds
         will be excludable from Federal gross income if, and to the same extent
         as, such interest would have been so excludable if paid in normal
         course by the issuer provided that, at the time such policies are
         purchased, the amounts paid for such policies are reasonable, customary
         and consistent with the reasonable expectation that the issuer of the
         Insured Bonds, rather than the insurer, will pay debt service on the
         Insured Bonds. Paragraph (ii) of this opinion is accordingly applicable
         to such payment.

         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 Bonds on the date a Unitholder acquires his Units, and the price
the Unitholder pays for his Units.

         Because the Trusts do not include any "private activity" bonds within
the meaning of Section 141 of the Code issued on or after August 8, 1986, none
of the Trust Funds' 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
alternative minimum tax depends upon the corporation's alternative minimum
taxable income ("AMTI") which is the corporation's taxable income with certain
adjustments.

         Pursuant to Section 56(c) of the Code, one of the adjustment items used
in computing AMTI of a corporation (other than an S Corporation, Regulated
Investment Company, Real Estate Investment Trust or REMIC) for taxable years
beginning after 1989, 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 operating loss
deduction). "Adjusted current earnings" includes 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 provides for a reduction in each taxable year
of 100 percent 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
generally 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.

         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 is not
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 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) subject to a statutory
de minimis rule. 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.

         Chapman and Cutler has expressed no opinion with respect to taxation
under any other provisions of Federal law. Ownership of the Units may result in
collateral Federal income tax consequences to certain taxpayers. Prospective
investors should consult their tax advisors as to the applicability of any such
collateral consequences.

         We have also examined the income tax law of the State of Missouri,
which is based upon the Federal law, to determine its applicability to the
Missouri IM-IT Trust (the "Missouri Trust") being created as part of the Fund
and to the holders of Units in the Missouri Trust who are residents of the State
of Missouri ("Missouri Unitholders").

         The assets of the Trust will consist of interest-bearing obligations
issued by or on behalf of the State of Missouri (the "State") or counties,
municipalities, authorities or political subdivisions thereof (the "Missouri
Bonds") or by the Commonwealth of Puerto Rico or an authority thereof (the
"Possession Bonds") (collectively, the "Bonds").

         Although we express no opinion with respect to the issuance of the
Bonds, in rendering our opinion expressed herein, we have assumed that: (i) the
Bonds were validly issued, (ii) the interest thereon is excludible from gross
income for Federal income tax purposes, (iii) interest on the Bonds, if received
directly by a Unitholder, would be exempt from the income tax imposed by the
State of Missouri that is applicable to individuals and corporations (the
"Missouri State Income Tax"). We have assumed that, at the respective times of
issuance of the Bonds, opinions that the Bonds were validly issued and that
interest on the Bonds is excluded from gross income for Federal income tax
purposes were rendered by bond counsel to the respective issuing authorities. In
addition, we have assumed that with respect to the Missouri Bonds, bond counsel
to the issuing authorities rendered opinions that the interest on the Missouri
Bonds is exempt from the Missouri State Income Tax and, with respect to the
Possession Bonds, bond counsel to the issuing authorities rendered opinions that
the Possession Bonds and the interest thereon is exempt from all state and local
income taxation. Neither the Sponsor nor its counsel has made any review for the
Missouri IM-IT Trust of the proceedings relating to the issuance of the Bonds or
of the bases for the opinions rendered in connection therewith. This opinion
does not address the taxation of persons other than full time residents of
Missouri.

         In the opinion of Chapman and Cutler, counsel to the Sponsor, under
existing law:

                   (1) The Missouri Trust is not an association taxable as a
         corporation for Missouri income tax purposes, and each Unitholder of
         the Missouri Trust will be treated as the owner of a pro rata portion
         of the Trust and the income of such portion of the Trust will be
         treated as the income of the Unitholder for Missouri State Income Tax
         purposes.

                   (2) Interest paid and original issue discount, if any, on the
         Bonds which would be exempt from the Missouri State Income Tax if
         received directly by a Unitholder will be exempt from the Missouri
         State Income Tax when received by the Missouri Trust and distributed to
         such Unitholder; however, no opinion is expressed herein regarding
         taxation of interest paid and original issue discount, if any, on the
         Bonds received by the Missouri Trust and distributed to Unitholders
         under any other tax imposed pursuant to Missouri law, including but not
         limited to the franchise tax imposed on financial institutions pursuant
         to Chapter 148 of the Missouri Statutes.

                   (3) Each Unitholder of the Missouri Trust will recognize gain
         or loss for Missouri State Income Tax purposes if the Trustee disposes
         of a Bond (whether by redemption, sale, or otherwise) or if the
         Unitholder redeems or sells Units of the Missouri Trust to the extent
         that such a transaction results in a recognized gain or loss to such
         Unitholder for Federal income tax purposes. Due to the amortization of
         bond premium and other basis adjustments required by the Internal
         Revenue Code, a Unitholder, under some circumstances, may realize
         taxable gain when his or her Units are sold or redeemed for an amount
         less than or equal to their original cost.

                   (4) Any insurance proceeds paid under policies which
         represent maturing interest on defaulted obligations which are
         excludable from gross income for Federal income tax purposes will be
         excludable from Missouri State Income Tax to the same extent as such
         interest would have been so excluded if paid by the issuer of such
         Bonds held by the Missouri Trust; however, no opinion is expressed
         herein regarding taxation of interest paid and original issue discount,
         if any, on the Bonds received by the Missouri Trust and distributed to
         Unitholders under any other tax imposed pursuant to Missouri law,
         including but not limited to the franchise tax imposed on financial
         institutions pursuant to Chapter 148 of the Missouri Statutes.

                   (5) The Missouri State Income Tax does not permit a deduction
         of interest paid or incurred on indebtedness incurred or continued to
         purchase or carry Units in the Missouri Trust, the interest on which is
         exempt from such Tax.

                   (6) The Missouri Trust will not be subject to the Kansas
         City, Missouri Earnings and Profits Tax and each Unitholder's share of
         income of the Bonds held by the Missouri Trust will not generally be
         subject to the Kansas City, Missouri Earnings and Profits Tax or the
         City of St. Louis Earnings Tax (except that no opinion is expressed in
         the case of certain Unitholders, including corporations, otherwise
         subject to the St. Louis City Earnings Tax).

         Chapman and Cutler has expressed no opinion with respect to taxation
under any other provision of Missouri law. Ownership of the Units may result in
collateral Missouri tax consequences to certain taxpayers. Prospective investors
should consult their tax advisors as to the applicability of any such collateral
consequences.

         Units may be subject to the Missouri Estate Tax. We have not examined
any of the Bonds to be deposited and held in the Missouri Trust or the
proceedings for the issuance thereof or the opinions of bond counsel with
respect thereto, and therefore express no opinion as to the exemption from the
Missouri State Income Tax of interest on the Bonds if received directly by a
Unitholder.


                                                Very truly yours,


                                                CHAPMAN AND CUTLER
MJK/md


The Bank of New York
March 30 1998
Page 1

                                                                     EXHIBIT 3.3

March 30, 1998

                                WINSTON & STRAWN
                                 200 PARK AVENUE
                          NEW YORK, NEW YORK 10166-4193

                                 March 30, 1998


Insured Municipals Income Trust,
  229th Insured Multi-Series
c/o The Bank of New York,
  As Trustee
101 Barclay Street, 17 West
New York, New York 10286

Dear Sirs:

         We have acted as special counsel for the Insured Municipals Income
Trust, 229th Insured Multi-Series (the "Fund") consisting of Missouri Insured
Municipals Income Trust, Series 106 and New Jersey Insured Municipals Income
Trust, Series 122 (in the aggregate "Trusts" and individually "Trust") for the
purpose of determining the applicability of certain New York taxes under the
circumstances hereinafter described.

         The Fund is created pursuant to a Trust Agreement (the "Indenture"),
dated as of today (the "Date of Deposit") among Van Kampen American Capital
Distributors, Inc. (the "Depositor"), American Portfolio Evaluation Services, a
division of Van Kampen American Capital Investment Advisory Corp., as Evaluator,
and The Bank of New York as Trustee (the "Trustee"). As described in the
prospectus relating to the Fund dated today to be filed as an amendment to a
registration statement previously filed with the Securities and Exchange
Commission (File Number 333-45163) under the Securities Act of 1933, as amended
(the "Prospectus" and the "Registration Statement"), the objectives of the Fund
are the generation of income exempt from Federal taxation and as regards each of
the Trusts exempt, to the extent indicated in the Prospectus, from income tax,
if any, of the State denominated in the name of tht Trust. No opinion is
expressed herein with regard to the Federal or State (other than New York) tax
aspects of the bonds, the Fund, the Trusts, units of each Trust (the "Units"),
or any interest, gains or losses in respect thereof.

         As more fully set forth in the Indenture and in the Prospectus, the
activities of the Trustee will include the following:

         On the Date of Deposit, the Depositor will deposit with the Trustee
with respect to each Trust, the total principal amount of interest bearing
obligations and/or contracts for the purchase thereof together with an
irrevocable letter of credit in the amount required for the purchase price and
accrued interest, if any, along with an insurance policy purchased by the
Depositor evidencing the insurance guaranteeing the timely payment of principal
and interest of some of the obligations comprising the corpus of the Trusts
other than those obligations the timely payment of principal and interest of
which are guaranteed by an insurance policy purchased by the issuer thereof or a
prior owner, which may include the Depositor prior to the Date of Deposit, all
as more fully set forth in the Prospectus and the Registration Statement with
respect to each Trust.

         We understand that with respect to the obligations described in the
preceding paragraph all insurance policies, whether purchased by the Depositor,
the issuer or a prior owner, provide, or will provide, that the amount paid by
the insurer in respect of any bond may not exceed the amount of principal and
interest due on the bond and such payment will in no event relieve the issuer
from its continuing obligation to pay such defaulted principal and interest in
accordance with the terms of the obligation.

         The Trustee will not participate in the selection of the obligations to
be deposited in the Fund, and, upon the receipt thereof, will deliver to the
Depositor a registered certificate for the number of Units representing the
entire corpus of each Trust as more fully set forth in the Prospectus and the
Registration Statement. The Units, which are represented by certificates (the
"Certificates"), will be offered to the public by the Prospectus upon the
effectiveness of the Registration Statement.

         The duties of the Trustee, which are ministerial in nature, will
consist primarily of crediting the appropriate accounts with interest received
by each Trust and with the proceeds from the disposition of obligations held in
each Trust and the distribution of such interest and proceeds to the Unit
holders of that Trust. The Trustee will also maintain records of the registered
holders of Certificates representing an interest in each Trust and administer
the redemption of Units by such Certificate holders and may perform certain
administrative functions with respect to an automatic investment option.

         Generally, obligations held in the Fund may be removed therefrom by the
Trustee only upon redemption prior to their stated maturity, at the direction of
the Depositor in the event of an advance refunding or upon the occurrence of
certain other specified events which adversely affect the sound investment
character of the Fund, such as default by the issuer in payment of interest or
principal on the obligation and no provision for payment is made therefor either
pursuant to the portfolio insurance or otherwise and the Depositor fails to
instruct the Trustee, within thirty (30) days after notification, to hold such
obligation.

         Prior to the termination of the Fund, the Trustee is empowered to sell
Bonds, from a list furnished by the Depositor, and only for the purposes of
redeeming Units tendered to it and of paying expenses for which funds are not
available. The Trustee does not have the power to vary the investment of any
Unit holder in the Fund, and under no circumstances may the proceeds of sale of
any obligations held by the Fund be used to purchase new obligations to be held
therein.

         Article 9-A of the New York Tax Law imposes a franchise tax on business
corporations, and, for purposes of that Article, Section 208(1) defines the term
"corporation" to include, among other things, "any business conducted by a
trustee or trustees wherein interest or ownership is evidenced by certificate or
other written instrument."

         The Regulations promulgated under Section 208 provide as follows:

                  The term "trust" includes any business conducted by a trustee
                  or trustees in which interest or ownership is evidenced by
                  certificate or other written instrument. Such a trust
                  includes, but is not limited to, an association commonly
                  referred to as a "business trust" or "Massachusetts trust". In
                  determining whether a trustee or trustees are conducting a
                  business, the form of the agreement is of significance but is
                  not controlling. The actual activities of the trustee or
                  trustees, not their purposes and powers, will be regarded as
                  decisive factors in determining whether a trust is subject to
                  tax under Article 9-A. The mere investment of funds and the
                  collection of income therefrom, with incidental replacement of
                  securities and reinvestment of funds, does not constitute the
                  conduct of a business in the case of a trust. 20 NYCRR
                  1-2.5(b)(2) (July 11, 1990).

         New York cases dealing with the question of whether a trust will be
subject to the franchise tax have also delineated the general rule that where a
trustee merely invests funds and collects and distributes the income therefrom,
the trust is not engaged in business and is not subject to the franchise tax.
BURRELL V. LYNCH, 274 A.D. 347, 84 N.Y.S.2d 171 (3rd Dept. 1948), ORDER
RESETTLED, 274 A.D. 1073, 85 N.Y.S.2d 705 (3rd Dept. 1949).

         In an opinion of the Attorney General of the State of New York, 47 N.Y.
Att'y. Gen. Rep. 213 (Nov. 24, 1942), it was held that where the trustee of an
unincorporated investment trust was without authority to reinvest amounts
received upon the sales of securities and could dispose of securities making up
the trust only upon the happening of certain specified events or the existence
of certain specified conditions, the trust was not subject to the franchise tax.

         In the instant situation, the Trustee is not empowered to, and we
assume will not, sell obligations contained in the corpus of the Fund and
reinvest the proceeds therefrom. Further, the power to sell such obligations is
limited to circumstances in which the creditworthiness or soundness of the
obligation is in question or in which cash is needed to pay redeeming Unit
holders or to pay expenses, or where the Fund is liquidated pursuant to the
termination of the Indenture. Only in circumstances in which the issuer of an
obligation attempts to refinance it can the Trustee exchange an obligation for a
new security. In substance, the Trustee will merely collect and distribute
income and will not reinvest any income or proceeds, and the Trustee has no
power to vary the investment of any Unit holder in the Fund.

         Under Subpart E of Part I, Subchapter J of Chapter 1 of the Internal
Revenue Code of 1986, as amended (the "Code"), the grantor of a trust will be
deemed to be the owner of the trust under certain circumstances, and therefore
taxable on his proportionate interest in the income thereof. Where this Federal
tax rule applies, the income attributed to the grantor will also be income to
him for New York income tax purposes. (See TSB-M-78(9)(C), New York Department
of Taxation and Finance, June 23, 1978.)

         By letter, dated today, Messrs. Chapman and Cutler, counsel for the
Depositor, rendered their opinion that each Unit holder of a Trust will be
considered as owning a share of each asset of that Trust in the proportion that
the number of Units held by such holder bears to the total number of Units
outstanding and the income of a Trust will be treated as the income of each Unit
holder of that Trust in said proportion pursuant to Subpart E of Part I,
Subchapter J of Chapter 1 of the Code.

         Based on the foregoing and on the opinion of Messrs. Chapman and
Cutler, counsel for the Depositor, dated today, upon which we specifically rely,
we are of the opinion that under existing laws, rulings, and court decisions
interpreting the laws of the State and City of New York:

                    1. Each Trust will not constitute an association taxable as
         a corporation under New York law, and, accordingly, will not be subject
         to tax on its income under the New York State franchise tax or the New
         York City general corporation tax.

                    2. The income of each Trust will be treated as the income of
         the Unit holders under the income tax laws of the State and City of
         New York.

                    3. Unit holders who are not residents of the State of New
         York are not subject to the income tax law thereof with respect to any
         interest or gain derived from the Fund or any gain from the sale or
         other disposition of the Units, except to the extent that such interest
         or gain is from property employed in a business, trade, profession or
         occupation carried on in the State of New York.

         In addition, we are of the opinion no New York State stock transfer tax
will be payable in respect of any transfer of the Certificates by reason of the
exemption contained in paragraph (a) of Subdivision 8 of Section 270 of the New
York Tax Law.

         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement relating to the Units and to the use of our name and the
reference to us in the Registration Statement and in the Prospectus.

                                               Very truly yours,

                                               WINSTON & STRAWN

Van Kampen American Capital Distributors, Inc.
March 30, 1998
Page 1

                                                                     EXHIBIT 3.4


                          PITNEY, HARDIN, KIPP & SZUCH
                                  P.O. Box 1945
                        Morristown, New Jersey 07962-1945


                                 March 30, 1998



Van Kampen American Capital Distributors, Inc.
One Parkview Plaza
Oakbrook Terrace, Illinois 60181


Re: Insured Municipals Income Trust, 229th Insured Multi-Series
    (New Jersey Insured Municipals Income Trust, Series 122)

Gentlemen:

         We have acted as special counsel, with respect to New Jersey state tax
matters, to Insured Municipals Income Trust, 229th Insured Multi-Series (the
"Fund") concerning a Registration Statement (No. 333-45163) on Form S-6 under
the Securities Act of 1933, as amended, covering the issuance by the Fund of
units of fractional undivided interest (the "Units") in several state trusts
(the "State Trusts"), one of which is New Jersey Insured Municipals Income
Trust, Series 122 included as a part of the Fund (the "New Jersey Trust"). Such
Units will be purchased by various investors ("Certificateholders").

         The Fund is organized under a Trust Indenture and Agreement (the
"Indenture") of even date herewith (the "Date of Deposit") between Van Kampen
American Capital Distributors, Inc. (the "Depositor") and The Bank of New York
through its Wall Street Trust division (the "Trustee"). Each Unit of the New
Jersey Trust represents a fractional undivided interest in the principal and net
income of the New Jersey Trust. The New Jersey Trust will be comprised of that
number of units which will establish as close as possible as of the Date of
Deposit a Public Offering Price (as defined in the Prospectus) per Unit of
$1,000. The New Jersey Trust will be administered as a distinct entity with
separate certificates, investments, expenses, books and records.

         In acting as special counsel, we have examined such documents and
records with respect to a prior series, Insured Municipals Income Trust, 226th
Insured Multi-Series, as we deem necessary, including, but not limited to, the
Trust Indenture and Agreement (the "226th Insured Multi-Series Indenture") and
the Prospectus. You have advised that the Indenture is identical in all material
respects to the 226th Insured Multi-Series Indenture. You have also advised that
the opinion of Messrs. Chapman and Cutler with respect to the Federal income tax
status of the Fund, its constituent State Trusts and its Certificateholders, is
in all material respects identical to the opinion issued by Messrs. Chapman and
Cutler for the Insured Municipals Income Trust, 226th Insured Multi-Series.

         We note that the assets of the New Jersey Trust will consist of
interest-bearing obligations issued by or on behalf of the State of New Jersey,
and counties, municipalities, authorities and other political subdivisions
thereof, and certain territories of the United States (the "Bonds").
Distributions of the interest received by the New Jersey Trust will be made to
each Certificateholder semi-annually unless the Certificateholder elects to
receive such distributions on a monthly basis. In the opinion of bond counsel to
each issuer, the interest on all Bonds in the New Jersey Trust is exempt from
Federal income tax under existing law.

         We understand that on the Date of Deposit the Depositor has deposited
with the Trustee the total principal amount of interest-bearing obligations
and/or contracts for the purchase thereof together with an irrevocable letter of
credit in the amount required for the purchase price and accrued interest, if
any, and an insurance policy purchased by the Depositor evidencing the insurance
guaranteeing the timely payment of principal and interest of some of the
obligations comprising the corpus of the Fund, as more fully set forth in the
Preliminary Prospectus. All other obligations included in the deposit described
above will be covered by insurance obtained by the issuer of such obligations
guaranteeing timely payment of principal and interest. Such insurance will
provide that the amount paid by the insurer in respect of any Bond may not
exceed the amount of principal and interest due on the Bond and such payment
will in no event relieve the issuer from its continuing obligation to pay such
defaulted principal and interest in accordance with the terms of the obligation.

         Section 2.04 of the Indenture provides that each State Trust is a
separate and distinct trust for all purposes, the assets of one State Trust may
not be commingled with the assets of any other State Trust, and the expenses of
one State Trust shall not be charged against any other State Trust. Section 2.04
further provides that the certificates representing the ownership of an
undivided fractional interest in one State Trust shall not be exchangeable for
certificates representing the ownership of an undivided fractional interest in
any other State Trust.

         The Indenture provides further, among other things, that the Trustee
shall:

                   (a) collect all interest and monies payable to the New Jersey
         Trust, and hold the funds collected in trust on behalf of the
         Certificateholders of the New Jersey Trust;

                   (b) set aside from such funds any amounts necessary for the
         reimbursement of advances and for the payment of expenses, taxes and
         governmental charges in respect of the New Jersey Trust;

                   (c) distribute all remaining amounts semi-annually, or
         monthly if so elected by a Certificateholder, to the Certificateholders
         in proportion to their interest in the New Jersey Trust;

                   (d) redeem any certificates tendered for redemption by a
         Certificateholder provided that the Trustee has notified the Depositor
         of the tender and the Depositor has failed to indicate within a time
         specified in the Indenture that it will purchase the tendered
         certificates from the tendering Certificateholder;

                   (e) sell or liquidate any or all Bonds at the sole direction
         of the Depositor and at such price and time and in such manner as shall
         be determined by the Depositor, provided that the Depositor has
         determined that any one or more of certain conditions specified in the
         Indenture exists;

                   (f) in connection with an offer made by an obligor of any of
         the Bonds to issue new obligations, in exchange and substitution for
         any issue of Bonds pursuant to a plan for the refunding or refinancing
         of such Bonds, pursuant to the sole instruction of the Depositor in
         writing, reject such offer and either hold or sell such Bonds, or
         accept or reject such offer or to take any other action with respect
         thereto as the Depositor may deem proper; and

                   (g) at the direction of the Depositor, acquire Replacement
         Bonds, as defined in the Prospectus, to make up the original corpus of
         the New Jersey Trust in the event of a failure to deliver any Bond that
         has been purchased for the New Jersey Trust under a contract, including
         those Bonds purchased on a "when, as and if issued" basis.

         The Trustee has no power of sale except (a) on order of the Depositor
as stated herein, (b) to provide funds, not otherwise available, to pay taxes,
charges, expenses, fees or indemnities, (c) in case of default on any of the
Bonds, but only after notification of the Depositor, and provided that the
Depositor has not, within 30 days of such notification, given any instructions
to sell or to hold, or has not taken any other action in connection with, such
Bonds, or (d) for the purpose of redeeming certificates tendered by any
Certificateholder. The Trustee has no power to reinvest, except as stated in
Section 3.08 of the Indenture. Such limited power of reinvestment is in
furtherance of the Trustee's obligation to protect the trust assets, and does
not constitute power to vary investments.

         The Indenture provides further, among other things, that the
Certificateholders:

                   (a) may tender their certificate or certificates to the 
         Trustee for redemption except in limited circumstances;

                   (b) will not have any right to vote or in any manner
         otherwise control the operation and management of the Fund, the New
         Jersey Trust, or the obligations of the Depositor or Trustee;

                   (c) may elect to receive distributions from the New Jersey
Trust on a monthly basis;

                   (d) may terminate the New Jersey Trust at any time by written
         consent of Certificateholders representing 51% of the then outstanding
         Units of the New Jersey Trust; and

                   (e) shall be under no liability to any third persons by
         reason of any action taken by the Depositor or Trustee or any other
         Certificateholder, or any other cause whatsoever.

         You have advised that, in the opinion of Messrs. Chapman and Cutler,
for Federal income tax purposes the Fund and New Jersey Trust will not be
taxable as a corporation or 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. Each Certificateholder will be considered the owner of a
pro rata portion of the New Jersey 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, as amended. The New Jersey 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 the
Certificateholder as it would have in the hands of the Trustee. Accordingly, to
the extent that the income of the New Jersey Trust consists of interest
excludable from 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 Certificateholder. Furthermore, any proceeds paid under the insurance policy
issued to the Trustee of the Fund which represent 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 issuer of the defaulted obligations and the excludability from Federal
gross income of interest on Bonds which may be insured by policies issued
directly to the respective Bond issuers will not be affected if the source of
any interest payment is from policy proceeds.

         Based on our examination of the 226th Insured Multi-Series Indenture,
your advice that the Indenture is identical in all material respects to the
226th Insured Multi-Series Indenture, your advice that the opinion of Messrs.
Chapman and Cutler with respect to the Federal income tax status of the Fund,
its constituent State Trusts and its Certificateholders dated as of the date
hereof is identical in all material respects to its counterpart in the prior
issue of Insured Municipals Income Trust, 226th Insured Multi-Series, and, with
respect to Federal income tax matters, with your approval, relying solely upon
the opinion of Messrs. Chapman and Cutler, and our examination of such other
documents, records and matters of law as we deem necessary, we are of the
opinion that for New Jersey state and local tax purposes:

                    1. The New Jersey Trust will be recognized as a trust and
         not an association taxable as a corporation. The New Jersey Trust will
         not be subject to the New Jersey Corporation Business Tax or the New
         Jersey Corporation Income Tax.

                    2. With respect to the non-corporate Certificateholders who
         are residents of New Jersey, the income of the New Jersey Trust which
         is allocable to each such Certificateholder will be treated as the
         income of such Certificateholder under the New Jersey Gross Income Tax.
         Interest on the underlying Bonds which would be exempt from New Jersey
         Gross Income Tax if directly received by such Certificateholder will
         retain its status as tax-exempt interest when received by the New
         Jersey Trust and distributed to such Certificateholder. Any proceeds
         paid under the insurance policy issued to the Trustee of the Fund with
         respect to the Bonds or under individual policies obtained by issuers
         of Bonds which represent maturing interest on defaulted obligations
         held by the Trustee will be exempt from New Jersey Gross 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.

                    3. A non-corporate Certificateholder will not be subject to
         the New Jersey Gross Income Tax on any gain realized either when the
         New Jersey Trust disposes of a Bond (whether by sale, exchange,
         redemption, or payment at maturity) or when the Certificateholder
         redeems or sells his Units, or upon payment of any proceeds under the
         insurance policy issued to the Trustee of the Fund with respect to the
         Bonds or under individual policies obtained by issuers of Bonds which
         represent maturing principal on defaulted obligations held by the
         Trustee. Any loss realized on such disposition may not be utilized to
         offset gains realized by such Certificateholder on the disposition of
         assets the gain on which is subject to the New Jersey Gross Income Tax.

                    4. Units of the New Jersey Trust may be taxable on the death
         of a Certificateholder under the New Jersey Transfer Inheritance Tax
         law or the New Jersey Estate Tax Law.

                    5. If a Certificateholder is a corporation subject to the
         New Jersey Corporation Business Tax or New Jersey Corporation Income
         Tax, interest from the Bonds in the New Jersey Trust which is allocable
         to such corporation will be includable in its entire net income for
         purposes of the New Jersey Corporation Business Tax or New Jersey
         Corporation Income Tax, less any interest expense incurred to carry
         such investment to the extent such interest expense has not been
         deducted in computing Federal taxable income. Net gains derived by such
         corporation on the disposition of the Bonds by the New Jersey Trust or
         on the disposition of its Units will be included in its entire net
         income for purposes of the New Jersey Corporation Business Tax or New
         Jersey Corporation Income Tax. Any proceeds paid under the insurance
         policy issued to the Trustee of the Fund with respect to the Bonds or
         under individual policies obtained by issuers of Bonds which represent
         maturing interest or maturing principal on defaulted obligations held
         by the Trustee will be included in its entire net income for purposes
         of the New Jersey Corporation Business Tax or New Jersey Corporation
         Income Tax if, and to the same extent as, such interest or proceeds
         would have been so included if paid by the issuer of the defaulted
         obligations.

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

         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to our firm and a summary of this
opinion included in such Registration Statement and the related Prospectus. In
giving such consent we do not thereby admit that we are in 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.

         Except as indicated in the immediately preceding paragraph hereof and
except with our prior written consent, this opinion may not be quoted in whole
or in part or otherwise referred to in any document or instrument or be
furnished to or relied upon by any person other than the addressee and The Bank
of New York through its Wall Street Trust division, as Trustee (including any
successor trustee).
                                              Very truly yours,

                                              PITNEY, HARDIN, KIPP & SZUCH






                                                                     EXHIBIT 4.1
March 30, 1998

Interactive Data
14 Wall Street
New York, NY  10005


March 30, 1998


Van Kampen American Capital Distributors, Inc.
One Parkview Plaza
Oakbrook Terrace, IL 60181


Re: Insured Municipals Income Trust, 229th Insured Multi-Series
    (A Unit Investment Trust) Registered Under the Securities Act of 1933
    FILE NO. 333-45163

Gentlemen:

         We have examined the Registration Statement for the above captioned
Fund.

         We hereby consent to the reference in the Prospectus and Registration
Statement for the above captioned Fund to Interactive Data Corporation, as the
Evaluator, and to the use of the obligations prepared by us which are referred
to in such Prospectus and Statement.

         You are authorized to file copies of this letter with the Securities
and Exchange Commission.

Very truly yours,

James Perry
Vice President

March 30, 1998
Page 1

                                                                     EXHIBIT 4.2


Standard & Poor's
A division of The McGraw-Hill Companies, Inc.
25 Broadway
New York, New York  10004-1064


Van Kampen American Capital
One Parkview Plaza
Oakbrook Terrace, Illinois  60181

Re: Insured Municipals Income Trust, 229th Insured Multi-Series - consisting of:
    Missouri Insured Municipals Income Trust, Series 106
    New Jersey Insured Municipals Income Trust, Series 122

         Pursuant to your request for a Standard & Poor's rating on the units of
the above-captioned trust, SEC #333-45163, we have reviewed the information
presented to us and have assigned a `AAA' rating to the units of the trust and a
`AAA' rating to the securities contained in the trust for as long as they remain
in the trust. The ratings are direct reflections, of the portfolio of the trust,
which will be composed solely of securities covered by bond insurance policies
that insure against default in the payment of principal and interest on the
securities so long as they remain in the trust. Since such policies have been
issued by one or more insurance companies which have been assigned a `AAA'
claims paying ability rating by S&P, S&P has assigned a `AAA' rating to the
units of the trust and to the securities contained in the trust for as long as
they remain in the trust.

         Standard & Poor's will maintain surveillance on the "AAA" Rating Until
April 30, 1999. On this date, the rating will be automatically withdrawn by
Standard & Poor's unless a post effective letter is requested by the trust.

         You have permission to use the name of Standard & Poor's Corporation
and the above-assigned ratings in connection with your dissemination of
information relating to these units, provided that it is understood that the
ratings are not "market" ratings nor recommendations to buy, hold, or sell the
units of the trust or the securities contained in the trust. Further, it should
be understood the rating on the units does not take into account the extent to
which fund expenses or portfolio asset sales for less than the fund's purchase
price will reduce payment to the unit holders of the interest and 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 in the
registration statement or prospectus relating to the units or the trust.
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 the name of
Standard & Poor's Corporation in connection with the ratings assigned to the
securities contained in the trust. 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 the representations made to
us, we reserve the right to withdraw the rating.

         We are pleased to have had the opportunity to be of service to you.
If we can be of further help, please do not hesitate to call upon us.

                                   Sincerely,

                                   Sanford B. Bragg
                                   Managing Director




                                                                     EXHIBIT 4.3

                INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS' CONSENT

         We have issued our report dated March 30, 1998 on the statements of
condition and related bond portfolios of Insured Municipals Income Trust, 229th
Insured Multi-Series (Missoouri IM-IT and New Jersey IM-IT Trusts) as of March
30, 1998 contained in the Registration Statement on Form S-6 and Prospectus. We
consent to the use of our report in the Registration Statement and Prospectus
and to the use of our name as it appears under the caption "Trust
Administration-Independent Certified Public Accountants" in Part II of the
Prospectus.



                                                              GRANT THORNTON LLP

Chicago, Illinois
March 30, 1998



<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
This report reflects the current time period taken from 487 on March 30, 1998
it is unaudited
</LEGEND>
<SERIES>
<NUMBER> 106
<NAME> I-MO
       
<S>                            <C>
<PERIOD-TYPE>                          YEAR
<FISCAL-YEAR-END>               FEB-28-1999
<PERIOD-START>                  MAR-30-1998
<PERIOD-END>                    MAR-30-1998
<INVESTMENTS-AT-COST>             2,856,818
<INVESTMENTS-AT-VALUE>            2,856,818
<RECEIVABLES>                        47,869
<ASSETS-OTHER>                            0
<OTHER-ITEMS-ASSETS>                      0
<TOTAL-ASSETS>                    2,904,687
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<SHARES-COMMON-PRIOR>                 3,004
<ACCUMULATED-NII-CURRENT>                 0 
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<OVERDISTRIBUTION-GAINS>                  0
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<NET-ASSETS>                      2,856,818
<DIVIDEND-INCOME>                         0
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<NET-INVESTMENT-INCOME>                   0
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<PER-SHARE-NAV-BEGIN>                     0
<PER-SHARE-NII>                           0
<PER-SHARE-GAIN-APPREC>                   0
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<AVG-DEBT-PER-SHARE>                      0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
This report reflects the current time period taken from 487 on March 30, 1998 it
is unaudited
</LEGEND>
<SERIES>
<NUMBER> 122
<NAME> I-NJ
       
<S>                         <C>
<PERIOD-TYPE>                           YEAR
<FISCAL-YEAR-END>                FEB-28-1999
<PERIOD-START>                   MAR-30-1998
<PERIOD-END>                     MAR-30-1998
<INVESTMENTS-AT-COST>              2,855,867
<INVESTMENTS-AT-VALUE>             2,855,867
<RECEIVABLES>                         22,184
<ASSETS-OTHER>                             0
<OTHER-ITEMS-ASSETS>                       0
<TOTAL-ASSETS>                     2,878,051
<PAYABLE-FOR-SECURITIES>                   0
<SENIOR-LONG-TERM-DEBT>                    0
<OTHER-ITEMS-LIABILITIES>             22,184
<TOTAL-LIABILITIES>                   22,184
<SENIOR-EQUITY>                            0
<PAID-IN-CAPITAL-COMMON>           2,855,867
<SHARES-COMMON-STOCK>                  3,003
<SHARES-COMMON-PRIOR>                      0
<ACCUMULATED-NII-CURRENT>                  0
<OVERDISTRIBUTION-NII>                     0
<ACCUMULATED-NET-GAINS>                    0
<OVERDISTRIBUTION-GAINS>                   0
<ACCUM-APPREC-OR-DEPREC>                   0
<NET-ASSETS>                       2,855,867
<DIVIDEND-INCOME>                          0
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<OTHER-INCOME>                             0
<EXPENSES-NET>                             0
<NET-INVESTMENT-INCOME>                    0
<REALIZED-GAINS-CURRENT>                   0
<APPREC-INCREASE-CURRENT>                  0
<NET-CHANGE-FROM-OPS>                      0
<EQUALIZATION>                             0
<DISTRIBUTIONS-OF-INCOME>                  0
<DISTRIBUTIONS-OF-GAINS>                   0
<DISTRIBUTIONS-OTHER>                      0
<NUMBER-OF-SHARES-SOLD>                    0
<NUMBER-OF-SHARES-REDEEMED>               0
<SHARES-REINVESTED>                       0
<NET-CHANGE-IN-ASSETS>                    0
<ACCUMULATED-NII-PRIOR>                   0
<ACCUMULATED-GAINS-PRIOR>                 0
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<INTEREST-EXPENSE>                        0
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<PER-SHARE-NAV-BEGIN>                     0
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