INSURED MUNICIPALS INC TR & INV QUAL TAX EX TR MULTI SER 291
497, 1997-05-22
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                              May 23, 1997
                                    
                                    
                                    
Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C.  20549-1004
Attn:  Filing Desk, Stop 1-4

     
     
     Re: Insured Municipals Income Trust and Investors' Quality Tax-
         Exempt Trust, Multi-Series 291 (File No. 333-23483) 
         CIK #896951

Gentlemen:
     
     In  accordance with the requirements of Rule 497(b) of  the  General
Rules  and Regulations under the Securities Act of 1933, there is  hereby
filed a copy of the form of Prospectus to be used in connection with  the
public  offering  of  the securities covered by the subject  Registration
Statement in the exact form in which such Prospectus will be used.
                                    
                                    Very truly yours,
                                    
                                    
                                    
                                    
                                    Van Kampen American Capital
                                       Distributors, Inc.


May 22, 1997

Van Kampen American Capital
Prospectus Part I 

Insured Municipals Income Trust and Investors' Quality Tax-Exempt Trust, 
Multi-Series 291  
         
California IM-IT 166         Colorado IM-IT 84    Florida IM-IT 115   
South Carolina Quality 86                                             


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

In the opinion of counsel, interest to the Fund and to Unitholders, with
certain exceptions, is excludable under existing law from gross income for
Federal income taxes. In addition, the interest income of each State Trust is,
in the opinion of counsel, exempt to the extent indicated from state and local
taxes, when held by residents of the state where the issuers of Bonds in such
Trust are located. Capital gains, if any, are subject to Federal tax.


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 four underlying separate unit investment trusts designated as California
Insured Municipals Income Trust, Series 166 (the "California IM-IT
Trust" ), Colorado Insured Municipals Income Trust, Series 84 (the "
Colorado IM-IT Trust" ), Florida Insured Municipals Income Trust, Series
115 (the "Florida IM-IT Trust" ) and South Carolina Investors' Quality
Tax-Exempt Trust, Series 86 (the "South Carolina Quality Trust" ). The
various trusts are collectively referred to herein as the "Trusts" and
the "State Trusts" . The California IM-IT, Colorado IM-IT and Florida
IM-IT Trusts are sometimes collectively referred to herein as the "Insured
Trusts" and the South Carolina Quality Trust is sometimes referred to
herein as the "Quality Trust" . Each Trust initially consists of
delivery statements relating to contracts to purchase securities and,
thereafter, will consist of such securities as may continue to be held (the
"Bonds" or "Securities" ). Such Securities are interest-bearing
obligations issued by or on behalf of municipalities and other governmental
authorities, the interest on which is, in the opinion of recognized bond
counsel to the issuing governmental authority, exempt from all Federal income
taxes under existing law. In addition, the interest income of each State Trust
is, in the opinion of counsel, exempt to the extent indicated from state and
local taxes, when held by residents of the state where the issuers of Bonds in
such Trust are located.



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

  

INSURED MUNICIPALS INCOME TRUST
AND INVESTORS' QUALITY TAX-EXEMPT TRUST, Multi-Series 291
At the Close of Business on the day before the Date of Deposit: May 21, 1997
   Sponsor:      Van Kampen American Capital Distributors, Inc.   
 Evaluator:      American Portfolio Evaluation Services           
                 (A division of an affiliate of the Sponsor)      
   Trustee:      The Bank of New York                            
<TABLE>
<CAPTION>
                                                                                                                      South        
                                                                            California    Colorado      Florida       Carolina     
GENERAL INFORMATION                                                         IM-IT  Trust  IM-IT  Trust  IM-IT  Trust  Quality Trust
                                                                            ------------- ------------- ------------- -------------
<S>                                                                         <C>           <C>           <C>           <C>          
Principal Amount (Par Value) of Securities in Trust <F1>................... $   3,020,000 $   3,005,000 $   3,085,000 $   3,090,000
Number of Units............................................................         3,017         3,067         3,087         3,133
Fractional Undivided Interest in the Trust per Unit .......................       1/3,017       1/3,067       1/3,087       1/3,133
Principal Amount (Par Value) of Securities per Unit........................ $    1,000.99 $      979.78 $      999.35 $      986.28
Public Offering Price: ....................................................                                                        
 Aggregate Offering Price of Securities in Portfolio....................... $   2,869,178 $   2,916,731 $   2,935,749 $   2,979,497
 Aggregate Offering Price of Securities per Unit........................... $      951.00 $      951.00 $      951.00 $      951.00
 Sales Charge <F2>......................................................... $       49.00 $       49.00 $       49.00 $       49.00
 Public Offering Price per Unit <F3>....................................... $    1,000.00 $    1,000.00 $    1,000.00 $    1,000.00
Redemption Price per Unit <F3>............................................. $      943.53 $      943.66 $      943.61 $      943.61
Secondary Market Repurchase Price per Unit <F3>............................ $      951.00 $      951.00 $      951.00 $      951.00
Excess of Public Offering Price per Unit Over Redemption Price per Unit.... $       56.47 $       56.34 $       56.39 $       56.39
Excess of Sponsor's Initial Repurchase Price per Unit Over Redemption                                                              
Price per Unit............................................................. $        7.47 $        7.34 $        7.39 $        7.39
Minimum Value of the Trust under which Trust Agreement may be terminated... $     604,000 $     601,000 $     617,000 $     618,000
</TABLE>

<TABLE>
<CAPTION>
<S>                                  <C>                                          
First Settlement Date................May 28, 1997                                 
Evaluator's Annual Supervisory Fee...Maximum of $0.25 per Unit                    
Evaluator's Annual Evaluation Fee....$0.30 per $1,000 principal amount of Bonds   
Evaluation Time......................4:00 p.m. Eastern Time                       


- ----------
<FN>
<F1>Because certain of the Securities in certain Trusts 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 the respective Trust's termination will be equal to the Principal
Amount (Par Value) of Securities per Unit stated above.

<F2>Sales charges for the Trusts, expressed as a percentage of the Public Offering
Price per Unit and as a percentage of the aggregate offering price of the
Securities are set forth under "Unitholder Explanations--Public
Offering--General" in Part II of this Prospectus. Notwithstanding anything
to the contrary in Part II of this Prospectus, 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 and 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.

<F3>Anyone ordering Units for settlement after the First Settlement Date will pay
accrued interest from such date to the date of settlement (normally three
business days after order) less distributions from the Interest Account
subsequent to the First Settlement Date. For purchases settling on the First
Settlement Date, no accrued interest will be added to the Public Offering
Price. After the initial offering period, the Sponsor's Repurchase Price per
Unit will be determined as described under the caption "Unitholder
Explanations--Public Offering--Market for Units" in Part II of this
Prospectus.      
</TABLE>




CALIFORNIA IM-IT TRUST  

- --------------------------------------------------------------------------
General. The California IM-IT Trust consists of 9 issues of Securities. Five
of the Bonds in the California IM-IT Trust are general obligations of the
governmental entities issuing them and are 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 to
total California IM-IT Trust) as follows: General Obligation, 5 (42%);
Certificate of Participation, 2 (25%); Higher Education, 1 (17%) and Water and
Sewer, 1 (16%).  No Bond issue has received a provisional rating.

Risk Factors. The Trust will invest substantially all of its assets in
California Municipal Obligations. The Trust is therefore susceptible to
political, economic or regulatory factors affecting issuers of California
Municipal Obligations. These include the possible adverse effects of certain
California constitutional amendments, legislative measures, voter initiatives
and other matters that are described below. The following information provides
only a brief summary of the complex factors affecting the financial situation
in California (the "State" ) and is derived from sources that are
generally available to investors and are believed to be accurate. No
independent verification has been made of the accuracy or completeness of any
of the following information. It is based in part on information obtained from
various State and local agencies in California or contained in official
statements for various California Municipal Obligations. 

There can be no assurance that future statewide or regional economic
difficulties, and the resulting impact on State or local governmental finances
generally, will not adversely affect the market value of California Municipal
Obligations held in the portfolio of the Trust or the ability of particular
obligors to make timely payments of debt service on (or relating to) those
obligations. 

California's economy is the largest among the 50 states and one of the largest
in the world. The State's population of almost 32 million represents 12.3% of
the total United States population and grew by 27% in the 1980s. While the
State's substantial population growth during the 1980s stimulated local
economic growth and diversification and sustained a real estate boom between
1984 and 1990, it has increased strains on the State's limited water resources
and its infrastructure. Resultant traffic congestion, school over-crowding and
high housing costs have increased demands for government services and may
impede future economic growth. Population growth has slowed between 1991 and
1993 even while substantial immigration has continued, due to a significant
increase in outmigration by California residents. Generally, the household
incomes of new residents have been departing households, which may have a
major long-term socioeconomic and fiscal impact. However, with the California
economy improving, the recent net outmigration within the Continental U.S. is
expected to decrease or be reversed.

From mid-1990 to late 1993, the State's economy suffered its worst recession
since the 1930s, with recovery starting later than for the nation as a whole.
The State has experienced the worst job losses of any post-war recession.
Prerecession job levels may not be realized until near the end of the decade.
The largest job losses have been in Southern California, led by declines in
the aerospace and construction industries. Weakness statewide occurred in
manufacturing, construction, services and trade. Additional military base
closures will have further adverse effects on the State's economy later in the
decade.

Since the start of 1994, the California economy has shown signs of steady
recovery and growth. The State Department of Finance reports net job growth,
particularly in construction and related manufacturing, wholesale and retail
trade, transportation, recreation and services. This growth has offset the
continuing but slowing job losses in the aerospace industry and restructuring
of the finance and utility sectors, Unemployment in the State was down
substantially in 1994 from its 10% peak in January, 1994, but still remains
higher than the national average rate. Retail sales were up strongly in 1994
from year-earlier figures. Delay or slowdown in recovery will adversely affect
State revenues.

Certain California Municipal Obligations may be obligations of issuers which
rely in whole or in part, directly or indirectly, on ad valorem property taxes
as a source of revenue. The taxing powers of California local governments and
districts are limited by Article XIIIA of the California Constitution, enacted
by the voters in 1978 and commonly known as "Proposition 13." Briefly,
Article XIIIA limits to 1% of full cash value the rate of ad valorem property
taxes on real property and generally restricts the reassessment of property to
2% per year, except upon new construction or change of ownership (subject to a
number of exemptions). Taxing entities may, however, raise ad valorem taxes
above the 1% limit to pay debt service on voter-approved bonded indebtedness. 

Under Article XIIIA, the basic 1% ad valorem tax levy is applied against the
assessed value of property as of the owner's date of acquisition (or as of
March 1, 1975, if acquired earlier), subject to certain adjustments. This
system has resulted in widely varying amounts of tax on similarly situated
properties. Several lawsuits have been filed challenging the acquisition-based
assessment system of Proposition 13, and on June 18, 1992 the U.S. Supreme
Court announced a decision upholding Proposition 13. 

Article XIIIA prohibits local governments from raising revenues through ad
valorem property taxes above the 1% limit; it also requires voters of any
governmental unit to give two-thirds approval to levy any "special
tax." Court decisions, however, allowed non-voter approved levy of "
general taxes" which were not dedicated to a specific use. In response to
these decisions, the voters of the State in 1986 adopted an initiative statute
which imposed significant new limits on the ability of local entities to raise
or levy general taxes, except by receiving majority local voter approval.
Significant elements of this initiative, "Proposition 62," have been
overturned in recent court cases. An initiative proposed to re-enact the
provisions of Proposition 62 as a constitutional amendment was defeated by the
voters in November 1990, but such a proposal may be renewed in the future. 

California and its local governments are subject to an annual "
appropriations limit" imposed by Article XIIIB of the California
Constitution, enacted by the voters in 1979 and significantly amended by
Propositions 98 and 111 in 1988 and 1990, respectively. Article XIIIB
prohibits the State or any covered local government from spending "
appropriations subject to limitation" in excess of the appropriations
limit imposed. "Appropriations subject to limitation" are
authorizations to spend "proceeds of taxes," which consists of tax
revenues and certain other funds, including proceeds from regulatory licenses,
user charges or other fees, to the extent that such proceeds exceed the cost
of providing the product or service, but "proceeds of taxes" excludes
most State subventions to local governments. No limit is imposed on
appropriations of funds which are not "proceeds of taxes," such as
reasonable user charges or fees and certain other non-tax funds, including
bond proceeds. 

Among the expenditures not included in the Article XIIIB appropriations limit
are (1) the debt service cost of bonds issued or authorized prior to January
1, 1979, or subsequently authorized by the voters, (2) appropriations arising
from certain emergencies declared by the Governor, (3) appropriations for
certain capital outlay projects, (4) appropriations by the State of post-1989
increases in gasoline taxes and vehicle weight fees, and (5) appropriations
made in certain cases of emergency. 

The appropriations limit for each year is adjusted annually to reflect changes
in cost of living and population, and any transfers of service
responsibilities between government units. The definitions for such
adjustments were liberalized in 1990 by Proposition 111 to follow more closely
growth in California's economy. 

"Excess" revenues are measured over a two-year cycle. With respect to
local governments, excess revenues must be returned by a revision of tax rates
or fee schedules within the two subsequent fiscal years. The appropriations
limit for a local government may be overridden by referendum under certain
conditions for up to four years at a time. With respect to the State, 50% of
any excess revenues is to be distributed to K-12 school districts and
community college districts (collectively, "K-14 districts" ) and the
other 50% is to be refunded to taxpayers. With more liberal annual adjustment
factors since 1988, and depressed revenues since 1990 because of the
recession, few governments, including the State, are currently operating near
their spending limits, but this condition may change over time. Local
governments may by voter approval exceed their spending limits for up to four
years.

Because of the complex nature of Articles XIIIA and XIIIB of the California
Constitution, the ambiguities and possible inconsistencies in their terms, and
the impossibility of predicting future appropriations or changes in population
and cost of living, and the probability of continuing legal challenges, it is
not currently possible to determine fully the impact of Article XIIIA or
Article XIIIB on California Municipal Obligations or on the ability of
California or local governments to pay debt service on such California
Municipal Obligations. It is not presently possible to predict the outcome of
any pending litigation with respect to the ultimate scope, impact or
constitutionality of either Article XIIIA or Article XIIIB, or the impact of
any such determinations upon State agencies or local governments, or upon
their ability to pay debt service on their obligations. Future initiative or
legislative changes in laws or the California Constitution may also affect the
ability of the State or local issuers to repay their obligations. 

Under the California Constitution, debt service on outstanding general
obligation bonds is the second charge to the General Fund after support of the
public school system and public institutions of higher education. Total
outstanding general obligation bond and lease purchase debt of the State
increased from $9.4 billion at June 30, 1987 to $23.5 billion at June 30,
1994. In FY 1993-94, debt service on general obligation bonds and lease
purchase debt was approximately 5.2% of General Fund revenues.

The principal sources of General Fund revenues in 1993-94 were the California
personal income tax (44% of total revenues), the sales tax (35%), bank and
corporation taxes (12%), and the gross premium tax on insurance (3%).
California maintains a Special Fund for Economic Uncertainties (the "
Economic Uncertainties Fund" ), derived from General Fund revenues, as a
reserve to meet cash needs of the General Fund. 

Throughout the 1980s, State spending increased rapidly as the State population
and economy also grew rapidly, including increased spending for many
assistance programs to local governments, which were constrained by
Proposition 13 and other laws. The largest State program is assistance to
local public school districts. In 1988, an initiative (Proposition 98) was
enacted which (subject to suspension by a two-thirds vote of the Legislature
and the Governor) guarantees local school districts and community college
districts a minimum share of State General Fund revenues (currently about
33%). 

Since the start of 1990-91 Fiscal Year, the State has faced adverse economic,
fiscal and budget conditions. The economic recession seriously affected State
tax revenues. It also caused increased expenditures for health and welfare
programs. The State is also facing a structural imbalance in its budget with
the largest programs supported by the General Fund (education, health, welfare
and corrections) growing at rates significantly higher than the growth rates
for the principal revenue sources of the General Fund. These structural
concerns will be exacerbated in coming years by the expected need to
substantially increase capital and operating funds for corrections as a result
of a "Three Strikes" law enacted in 1994. 

As a result of these factors, among others, from the late 1980's until
1992-1993, the State had a period of nearly chronic budget imbalance, with
expenditures exceeding revenues in four out of six years, and the State
accumulated and sustained a budget deficit in the budget reserve, the Special
Fund for Economic Uncertainties ("SFEU" ) approaching $2.8 billion at
its peak at June 30, 1993. Starting in the 1990-91 Fiscal Year and for each
year thereafter, each budget required multibillion dollar actions to bring
projected revenues and expenditures into balance and to close large "
budget gaps" which were identified. The Legislature and Governor
eventually agreed on a number of different steps to produce Budget Acts in the
years 1991-92 to 1994-95, including: significant cuts in health and welfare
program expenditures; transfers of program responsibilities and funding from
the State to local governments, coupled with some reduction in mandates on
local government; transfer of about $3.6 billion in annual local property tax
revenues from cities, counties, redevelopment agencies and some other
districts to local school districts, thereby reducing State funding for
schools; reduction in growth of support for higher education programs, coupled
with increases in student fees; revenue increases (particularly in the 1992-93
Fiscal Year budget), most of which were for a short duration; increased
reliance on aid from the federal government to offset the costs of
incarcerating, educating and providing health and welfare services to
undocumented aliens (although these efforts have produced much less federal
aid than the State Administration has requested) and various on-time
adjustments and accounting changes.

Despite these budget actions, the effects of the recession led to large,
unanticipated deficits in the SFEU, as compared to projected positive
balances. By the start of the 1993-94 Fiscal Year, the accumulated deficit was
so large (almost $2.8 billion) that it was impractical to budget to retire it
in one year, so a two-year program was implemented, using the issuance of
revenue anticipation warrants to carry a portion of the deficit over the end
of the fiscal year. When the economy failed to recover sufficiently in
1993-94, a second two-year plan was implemented in 1994-95, to carry the final
retirement of the deficit into 1995-96.

The combination of stringent budget actions cutting State expenditures, and
the turnaround of the economy by late 1993, finally led to the restoration of
positive financial results. While General Fund revenues and expenditures were
essentially equal in FY 1992-93 (following two years of excess expenditures
over revenues), the General Fund had positive operating results in FY 1993-94
and 1994-95, which have reduced the accumulated budget deficit to around $600
million as of June 30, 1995.

A consequence of the accumulated budget deficits in the early 1990's, together
with other factors such as disbursement of funds to local school districts
"borrowed" from future fiscal years and hence not shown in the annual
budget, was to significantly reduce the State's cash resources available to
pay its ongoing obligations. When the Legislature and the Governor failed to
adopt a budget for the 1992-93 Fiscal Year by July 1, 1992, which would have
allowed the State to carry out its normal annual cash flow borrowing to
replenish its cash reserves, the State Controller was forced to issue
registered warrants ("IOUs" ) to pay a variety of obligations
representing prior years' or continuing appropriations, and mandates from
court orders. Available funds were used to make constitutionally-mandated
payments, such as debt service on bonds and warrants. Between July 1 and
September 4, 1992 the State Controller issued a total of approximately $3.8
billion of registered warrants. After that date, all remaining outstanding
registered warrants (about $2.9 billion) were called for redemptions from
proceeds of the issuance of 1992 Interim Notes after the budget was adopted.

The State's cash condition became so serious in late spring of 1992 that the
State Controller was required to issue revenue anticipation warrants maturing
in the following fiscal year in order to pay the State's continuing
obligations. The State was forced to rely increasingly on external debt
markets to meet its cash needs, as a succession of notes and warrants (both
forms of short-term cash flow financing) were issued in the period from June
1992 to July 1994, often needed to pay previously-maturing notes or warrants.
These borrowings were used also in part to spread out the repayment of the
accumulated budget deficit over the end of a fiscal year.

The State issued $7.0 billion of short-term debt in July, 1994 to meet its
cash flow needs and to finance the deferral of part of the accumulated budget
deficit to the 1995-96 fiscal year. In order to assure repayment of the $4
billion, 22-month part of this borrowing, the State enacted legislation (the
"Trigger Law" ) which can lead to automatic, across-the-board cuts in
General Fund expenditures in either the 1994-95 or 1995-96 fiscal years if
cash flow projections made at certain times during those years show
deterioration from the projections made in July 1994 when the borrowings were
made. On November 15, 1994, the State Controller as part of the Trigger Law
reported that the cash position of the General Fund on June 30, 1995 would be
about $580 million better than earlier projected, so no automatic budget
adjustments were required in 1994-95. The Controller's report showed that loss
of federal funds was offset by higher revenues, lower expenditures, and
certain other increases in cash resources.

For the first time in four years, the State entered the 1995-96 fiscal year
with strengthening revenues based on an improving economy. The major feature
of the Governor's proposed Budget, a 15% phased tax cut, was rejected by the
Legislature.

The 1995-96 Budget Act was signed by the Governor on August 3, 1995, 34 days
after the start of the fiscal year. The Budget Act projects General Fund
revenues and transfers of $44.1 billion. Expenditures are budgeted at $43.4
billion. The Department of Finance projects that, after repaying the last of
the carryover budget deficit, there will be positive balance of less than $30
million in the budget reserve, the Special Fund for Economic Uncertainties, at
June 30, 1996, providing no margin for adverse results during the year.

The Department of Finance projects cash flow borrowings in the 1995-96 Fiscal
Year will be the smallest in many years, comprising about $2 billion of notes
to be issued in April, 1996, and maturing by June 30, 1996. With full payment
of $4 billion of revenue anticipation warrants on April 25, 1996, the
Department sees no further need for borrowing over the end of the fiscal year.
The Department projects that available cash resources to pay State obligations
will be almost $2 billion at June 30, 1996. This "cushion" will be
re-examined by the State Controller on October 15, 1995, in the third step in
the Budget Adjustment Law process. If the Controller believes the available
cash resources on June 30, 1996 will, in fact, be zero or less, her report
would start a process which could lead to automatic budget cuts starting in
December, 1995.

The principal features of the 1995-96 Budget Act, in addition to those noted
above, are additional cuts in health and welfare expenditures (some of which
are subject to approvals or waivers by the federal government); assumed
further federal aid for illegal immigrant costs; and an increase in per-pupil
funding for public schools and community colleges, the first such significant
increase in four years.

State general obligation bonds ratings were reduced in July, 1994 to "
A1" by Moody's and "A" by S&P. Both of these ratings were reduced
from "AAA" levels which the State held until late 1991. There can be
no assurance that such ratings will be maintained in the future. It should be
noted that the creditworthiness of obligations issued by local California
issuers may be unrelated to the creditworthiness of obligations issued by the
State of California, and that there is no obligation on the part of the State
to make payment on such local obligations in the event of default.

The State is involved in certain legal proceedings (described in the State's
recent financial statements) that, if decided against the State, may require
the State to make significant future expenditures or may substantially impair
revenues. Trial courts have recently entered tentative decisions or
injunctions which would overturn several parts of the State's recent budget
compromises. The matters covered by these lawsuits include a deferral of
payments by the State to the Public Employees Retirement System, reductions in
welfare payments, and the use of certain cigarette tax funds for health costs.
All of these cases are subject to further proceedings and appeals, and if the
State eventually loses, the final remedies may not have to be implemented in
one year.

There are a number of State agencies, instrumentalities and political
subdivisions of the State that issue Municipal Obligations, some of which may
be conduit revenue obligations payable from payments from private borrowers.
These entities are subject to various economic risks and uncertainties, and
the credit quality of the securities issued by them may vary considerably from
the credit quality of the obligations backed by the full faith and credit of
the State.

Property tax revenues received by local governments declined more than 50%
following passage of Proposition 13. Subsequently, the California Legislature
enacted measures to provide for the redistribution of the State's General Fund
surplus to local agencies, the reallocation of certain State revenues to local
agencies and the assumption of certain governmental functions by the State to
assist municipal issuers to raise revenues. Total local assistance from the
State's General Fund was budgeted at approximately 75% of General Fund
expenditures in recent years, including the effect of implementing reductions
in certain aid programs. To reduce State General Fund support for school
districts, the 1992-93 and 1993-94 Budget Acts caused local governments to
transfer $3.9 billion of property tax revenues to school districts,
representing loss of the post-Proposition 13 "bailout" aid. The
largest share of these transfers came from counties, and the balance from
cities, special districts and redevelopment agencies. In order to make up this
shortfall, the Legislature proposed and voters approved in 1993 dedicating
0.5% of the sales tax to counties and cities for public safety purposes. In
addition, the Legislature has changed laws to relieve local governments of
certain mandates, allowing them to reduce costs.

To the extent the State should be constrained by its Article XIII
appropriations limit, or its obligation to conform to Proposition 98, or other
fiscal considerations, the absolute level, or the rate of growth, of State
assistance to local governments may be further reduced. Any such reductions in
State aid could compound the serious fiscal constraints already experienced by
many local governments, particularly counties. At lease one rural county
(Butte) publicly announced that it might enter bankruptcy proceedings in
August 1990, although such plans were put off after the Governor approved
legislation to provide additional funds for the county. Other counties have
also indicated that their budgetary condition is extremely grave. The Richmond
Unified School District (Contra Costa County) entered bankruptcy proceedings
in May 1991 but the proceedings have been dismissed. Los Angeles County, the
largest in the State, has reported severe fiscal problems, leading to a
nominal $1.2 billion deficit in its $11 billion budget for the 1995-96 Fiscal
Year. To balance the budget, the county has imposed severe cuts in services,
particularly for health care. The Legislature is considering actions to help
alleviate the County's fiscal problems, but none were completed before August
15, 1995. As a result of its bankruptcy proceedings (discussed further below)
Orange County also has implemented stringent cuts in services and has laid off
workers.

California Municipal Obligations which are assessment bonds may be adversely
affected by a general decline in real estate values or a slowdown in real
estate sales activity. In many cases, such bonds are secured by land which is
undeveloped at the time of issuance but anticipated to be developed within a
few years after issuance. In the event of such reduction or slowdown, such
development may not occur or may be delayed, thereby increasing the risk of a
default on the bonds. Because the special assessments or taxes securing these
bonds are not the personal liability of the owners of the property assessed,
the lien on the property is the only security for the bonds. Moreover, in most
cases the issuer of these bonds is not required to make payments on the bonds
in the event of delinquency in the payment of assessments or taxes, except
from amounts, if any, in a reserve fund established for the bonds. 

Certain California long-term lease obligations, though typically payable from
the general fund of the municipality, are subject to "abatement" in
the event the facility being leased is unavailable for beneficial use and
occupancy by the municipality during the term of the lease. Abatement is not a
default, and there may be no remedies available to the holders of the
certificates evidencing the lease obligation in the event abatement occurs.
The most common cases of abatement are failure to complete construction of the
facility before the end of the period during which lease payments have been
capitalized and uninsured casualty losses to the facility (e.g., due to
earthquake). In the event abatement occurs with respect to a lease obligation,
lease payments may be interrupted (if all available insurance proceeds and
reserves are exhausted) and the certificates may not be paid when due. 

Several years ago the Richmond Unified School District (the "District" 
) entered into a lease transaction in which certain existing properties of the
District were sold and leased back in order to obtain funds to cover operating
deficits. Following a fiscal crisis in which the District's finances were
taken over by a State receiver (including a brief period under bankruptcy
court protection), the District failed to make rental payments on this lease,
resulting in a lawsuit by the Trustee for the Certificate of Participation
holders, in which the State was a named defendant (on the grounds that it
controlled the District's finances). One of the defenses raised in answer to
this lawsuit was the invalidity of the original lease transaction. The trial
court has upheld the validity of the District's lease, and the case has been
settled. Any judgment in any future case against the position asserted by the
Trustee in the Richmond case may have adverse implications for lease
transactions of a similar nature by other California entities. 

The repayment of industrial development securities secured by real property
may be affected by California laws limiting foreclosure rights of creditors.
Securities backed by health care and hospital revenues may be affected by
changes in State regulations governing cost reimbursements to health care
providers under Medi-Cal (the State's Medicaid program), including risks
related to the policy of awarding exclusive contracts to certain hospitals. 

Limitations on ad valorem property taxes may particularly affect "tax
allocation" bonds issued by California redevelopment agencies. Such bonds
are secured solely by the increase in assessed valuation of a redevelopment
project area after the start of redevelopment activity. In the event that
assessed values in the redevelopment project decline (e.g., because of a major
natural disaster such as an earthquake), the tax increment revenue may be
insufficient to make principal and interest payments on these bonds. Both
Moody's and S&P suspended ratings on California tax allocation bonds after the
enactment of Articles XIIIA and XIIIB, and only resumed such ratings on a
selective basis. 

Proposition 87, approved by California voters in 1988, requires that all
revenues produced by a tax rate increase go directly to the taxing entity
which increased such tax rate to repay that entity's general obligation
indebtedness. As a result, redevelopment agencies (which, typically, are the
Issuers of tax allocation securities) no longer receive an increase in tax
increment when taxes on property in the project area are increased to repay
voter-approved bonded indebtedness. 

The effect of these various constitutional and statutory changes upon the
ability of California municipal securities issuers to pay interest and
principal on their obligations remains unclear. Furthermore, other measures
affecting the taxing or spending authority of California or its political
subdivisions may be approved or enacted in the future. Legislation has been or
may be introduced which would modify existing taxes or other revenue-raising
measures or which either would further limit or, alternatively, would increase
the abilities of state and local governments to impose new taxes or increase
existing taxes. It is not presently possible to determine the impact of any
such legislation on California Municipal Obligations in which the Fund may
invest, future allocations of state revenues to local governments or the
abilities of state or local governments to pay the interest on, or repay the
principal of, such California Municipal Obligations. 

Substantially all of California is within an active geologic region subject to
major seismic activity. Northern California in 1989 and Southern California in
1994 experienced major earthquakes causing billions of dollars in damages. The
federal government provided more than $1.8 billion in aid for both
earthquakes, and neither event is expected to have any long-term negative
economic impact. Any California Municipal Obligation in the Portfolio could be
affected by an interruption of revenues because of damaged facilities, or,
consequently, income tax deductions for casualty losses or property tax
assessment reductions. Compensatory financial assistance could be constrained
by the inability of (i) an issuer to have obtained earthquake insurance
coverage at reasonable rates; (ii) an insurer to perform on its contracts of
insurance in the event of widespread losses; or (iii) the Federal or State
government to appropriate sufficient funds within their respective budget
limitations. 

On January 17, 1994, a major earthquake with an estimated magnitude 6.8 on the
Richter scale struck the Los Angeles area, causing significant property damage
to public and private facilities, presently estimated at $15-20 billion. While
over $9.5 billion of federal aid, and a projected $1.9 billion of State aid,
plus insurance proceeds, will reimburse much of that loss, there were bill be
come ultimate loss of health and income in the region, in addition to costs of
the disruption caused by the event. Short-term economic projections are
generally neutral, as the infusion of aid will restore billions of dollars to
the local economy within a few months; already the local construction industry
has picked up. Although the earthquake will hinder recovery from the recession
in Southern California, already hard-hit, its long-term impact is not expected
to be material in the context of the overall wealth of the region. Almost five
years after the event, there are few remaining effects of the 1989 Loma Prieta
earthquake in northern California (which, however, caused less severe damage
than Northridge).

On December 7, 1994, Orange County, California (the "County" ),
together with its pooled investment fund (the "Pools" ) filed for
protection under Chapter 9 of the federal Bankruptcy Code, after reports that
the Pools had suffered significant market losses in its investments caused a
liquidity crisis for the Pools and the County. Approximately 180 other public
entities, most but not all located in the County, were also depositors in the
Pools. The County estimated the Pools' loss at about $1.64 billion, or 23%, of
its initial deposits of around $7.5 billion. Many of the entities which kept
moneys in the Pools, including the County, faced cash flow difficulties
because of the bankruptcy filing and may be required to reduce programs or
capital projects. Moody's and Standard & Poor's have suspended, reduced to
below investment grade levels, or placed on "Credit Watch" various
securities of the County and the entities participating in the Pools.

On May 2, 1995, the Bankruptcy Court approved a settlement agreement covering
claims of the other participating entities against the County and the Pools.
Most participants have received in cash 80% (90% for school districts) of
their Pools' investment; the balance is to be paid in the future. The County
succeeded in deferring, by consent, until June 30, 1996, the repayment of $800
million of short-term obligations due in July and August, 1995; these notes
are, however, considered to be in default by Moody's and S&P. On June 27,
1995, County voters turned down a proposal for a temporary 0.5% increase in
the local sales tax, making the County's fiscal recovery much harder.

The State of California has no obligation with respect to any obligations or
securities of the County or any of the other participating entities, although
under existing legal precedents, the State may be obligated to ensure that
school districts have sufficient funds to operate. All school districts were
able to meet their obligations in the 1994-95 Fiscal Year.

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

In the opinion of Orrick, Herrington & Sutcliffe, LLP, special counsel to the
Fund for California tax matters, under existing California income and property
tax law applicable to individuals who are California residents: 

(1)the California IM-IT Trust is not an association taxable as a corporation
and the income of the California IM-IT Trust will be treated as the income of
the Unitholders under the income tax laws of California; 

(2)amounts treated as interest on the underlying Securities in the California
IM-IT Trust which are exempt from tax under California personal income tax and
property tax laws when received by the California IM-IT Trust will, under such
laws, retain their status as tax-exempt interest when distributed to
Unitholders. However, interest on the underlying Securities attributed to a
Unitholder which is a corporation subject to the California franchise tax laws
may be includable in its gross income for purposes of determining its
California franchise tax. Further, certain interest which is attributable to a
Unitholder subject to the California personal income tax and which is treated
as an item of tax preference for purposes of the federal alternative minimum
tax pursuant to Section 57(a)(5) of the Internal Revenue Code of 1986 may also
be treated as an item of tax preference that must be taken into account in
computing such Unitholder's alternative minimum taxable income for purposes of
the California alternative minimum tax enacted by 1987 California Statutes,
chapter 1138. However, because of the provisions of the California
Constitution exempting the interest on bonds issued by the State of
California, or by local governments within the state, from taxes levied on
income, the application of the new California alternative minimum tax to
interest otherwise exempt from the California personal income tax in some
cases may be unclear; 

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

(4)under the California personal property tax laws, bonds (including the
Securities in the California IM-IT Trust) or any interest therein is exempt
from such tax; 

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

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

At the respective times of issuance of the Securities, opinions relating to
the validity thereof and to the exemption of interest thereon from Federal
income tax and California personal income tax are rendered by bond counsel to
the respective issuing authorities. Except in certain instances in which
Orrick, Herrington & Sutcliffe acted as bond counsel to issuers of Securities,
and as such made a review of proceedings relating to the issuance of certain
Securities at the time of their issuance, Orrick, Herrington & Sutcliffe has
not made any special review for the California IM-IT Trust of the proceedings
relating to the issuance of the Securities or of the basis for such opinions.


<TABLE>
<CAPTION>
Per Unit Information:                                                         Semi-     
                                                                 Monthly      Annual    
                                                                ------------ -----------
<S>                                                             <C>          <C>        
Calculation of Estimated Net Annual Unit Income:                                        
 Estimated Annual Interest Income per Unit..................... $     53.21  $    53.21 
 Less: Estimated Annual Expense per Unit <F1>.................. $      2.47  $     2.01 
 Less: Annual Premium on Portfolio Insurance per Unit..........          --          -- 
 Estimated Net Annual Interest Income per Unit................. $     50.74  $    51.20 
Calculation of Estimated Interest Earnings per Unit:                                    
 Estimated Net Annual Interest Income per Unit................. $     50.74  $    51.20 
 Divided by 12 and 2, respectively............................. $      4.22  $    25.60 
Estimated Daily Rate of Net Interest Accrual per Unit.......... $    .14096  $   .14224 
Estimated Current Return Based on Public Offering Price <F2>...        5.07%       5.12%
Estimated Long-Term Return <F2>................................        5.12%       5.17%
Estimated Initial Monthly Distribution (June 1997)............. $      1.69             
Estimated Initial Semi-annual Distribution (July 1997).........              $     5.97 
Estimated Normal Distribution per Unit <F2>.................... $      4.22  $    25.60 
</TABLE>


<TABLE>
<CAPTION>
<S>                             <C>                                                                                            
Trustee's Annual Fee <F3>...... $.91 and $.51 per $1,000 principal amount of Bonds, respectively, for those portions of the    
                                California IM-IT Trust under the monthly and semi-annual distribution plans                    
Record and Computation Dates... TENTH day of the month as follows: monthly--each month; semi-annual--January and July          
Distribution Dates............. TWENTY-FIFTH day of the month as follows: monthly--each month; semi-annual--                   
                                January and July                                                                               

- ----------
<FN>
<F1>Excluding insurance costs. The Estimated Annual Expenses are expected to
fluctuate periodically (see "Trust Administration--Fund Administration and
Expenses--Miscellaneous Expenses" in Part II of this Prospectus).

<F2>The Estimated Current Returns and Estimated Long-Term Returns are increased
for transactions entitled to a reduced sales charge. See "Unitholder
Explanations--Public Offering--General" in Part II of this Prospectus. For
a discussion of how these returns are calculated, see "Unitholder
Explanations--Estimated Current Returns and Estimated Long-Term Returns" 
in Part II of this Prospectus. These figures are based on estimated per Unit
cash flows. Estimated cash flows will vary with changes in fees and expenses,
with changes in current interest rates and with the principal prepayment,
redemption, maturity, call, exchange or sale of the underlying Securities. The
estimated cash flows for this Series are set forth under "Other
Matters--Estimated Cash Flows to Unitholders" .

<F3>Based on the size of the Trust on the Date of Deposit and assuming all
Unitholders had chosen the semi-annual distribution plan, the Trustee's
estimated annual fees for ordinary recurring services would initially amount
to $1,540. Assuming in the alternative that all Unitholders had elected the
monthly distribution plan, such fees would initially amount to $2,748.
</TABLE>



<TABLE>
CALIFORNIA INSURED MUNICIPALS INCOME TRUST
SERIES 166 (IM-IT AND QUALITY MULTI-SERIES 291)
PORTFOLIO As of May 22, 1997

<CAPTION>
                                                                                                               Offering            
                                                                                                               Price To            
                                                                                                               California          
Aggregate     Name of Issuer, Title, Interest Rate and Maturity Date of                     Redemption         IM-IT               
              either Bonds Deposited or Bonds Contracted for<F1><F5>            Rating<F2>  Feature<F3>        Trust<F4>           
- ------------- -------------------------------------------------------------- -------------- ------------------ -------------       
<S>           <C>                                                            <C>            <C>                <C>          <C>    
$     100,000 Los Alamitos Unified School District, Orange County,                                                                 
              California, Community Facilities District No. 90-1, Special                                                          
              General Obligation Tax Bonds, Refunding Series 1997  (AMBAC                   2007 @ 101                             
              Insured)  5.70% Due 8/15/2019.................................            AAA 2018 @ 100 S.F.    $     100,500       
      500,000 Los Angeles, California, Department of Water and Power,                                                              
              Electric Plant Revenue Refunding Bonds, Second Issue (FGIC                    2003 @ 102                             
              Insured)  #4.75% Due 11/15/2019...............................            AAA 2015 @ 100 S.F.          437,800       
      500,000 Baldwin Park Unified School District (Los Angeles County,                                                            
              California) General Obligation Bonds (1996 Election)   FGIC                   2006 @ 102                             
              Insured  5.80% Due 8/1/2021...................................            AAA 2018 @ 100 S.F.          506,545       
      410,000 Central Union High School District, Imperial County,                                                                 
              California, General Obligation-Unlimited Tax Bonds (MBIA                      2007 @ 102                             
              Insured)  #5.60% Due 8/1/2021.................................            AAA 2018 @ 100 S.F.          406,663       
       25,000 Center Unified School District, Sacramento County,                                                                   
              California, Election of 1992 General Obligation Bonds, Series                                                        
              1997C (MBIA Insured)  #0.00% Due 9/1/2021.....................            AAA                            6,270 <F6> 
      250,000 Contra Costa County, California, Public Facilities                                                                   
              Corporation, Certificates of Participation (Merrithew                                                                
              Memorial Hospital Replacement Project) Refunding Series 1997                  2007 @ 102                             
              (MBIA Insured)  #5.50% Due 11/1/2022..........................            AAA 2018 @ 100 S.F.          242,937       
      500,000 University of California, California, Revenue Refunding                                                              
              Multiple Purpose Project Bonds, Series C (AMBAC Indemnity                     2003 @ 102                             
              Insured)  #5.00% Due 9/1/2023.................................            AAA 2020 @ 100 S.F.          451,945       
      235,000 City of San Carlos, California, General Obligation Bonds,                     2006 @ 102                             
              Series 1996, (Bank Qualified) MBIA Insured  5.75% Due 8/1/2026            AAA 2022 @ 100 S.F.          237,113       
      500,000 City of Visalia, California, Refunding Certificates of                                                               
              Participation, Visalia Public Finance Authority, Series 1996A                 2006 @ 102                             
              (MBIA Insured)  #5.375% Due 12/1/2026.........................            AAA 2020 @ 100 S.F.          479,405       
$   3,020,000                                                                                                  $   2,869,178       
=============                                                                                                  =============       
</TABLE>


 

- ----------
All of the Bonds in the portfolio are insured by one of the Preinsured Bond
Insurers as indicated in the Bond name. See "Unitholder
Explanations--Insurance on the Bonds in the Insured Trusts" in Part II of
this Prospectus.

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

COLORADO IM-IT TRUST

- --------------------------------------------------------------------------
General. The Colorado IM-IT Trust consists of 9 issues of Securities. One of
the Bonds in the Colorado IM-IT Trust 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 to
total Colorado IM-IT Trust) as follows: Airport, 2 (28%); Water and Sewer, 2
(17%); Retail Electric/Gas/Telephone, 1 (17%); Transportation, 1 (17%);
General Obligation, 1 (8%); Health Care, 1 (8%) and Higher Education, 1 (5%).
No Bond issue has received a provisional rating.

Risk Factors. The State Constitution requires that expenditures for any fiscal
year not exceed revenues for such fiscal year. By statute, the amount of
General Fund revenues available for appropriation is based upon revenue
estimates which, together with other available resources, must exceed annual
appropriations by the amount of the unappropriated reserve (the "
Unappropriated Reserve" ). The Unappropriated Reserve requirement for
fiscal year 1991, 1992 and 1993 was set at 3% of total appropriations from the
General Fund. For fiscal years 1994 and thereafter, the Unappropriated Reserve
requirement is set at 4%. In addition to the Unappropriated Reserve, a
constitutional amendment approved by Colorado voters in 1992 requires the
State and each local government to reserve a certain percentage of its fiscal
year spending (excluding bonded debt service) for emergency use (the "
Emergency Reserve" ). The minimum Emergency Reserve was set at 2% for 1994
and 3% for 1995 and later years. For fiscal year 1992 and thereafter, General
Fund appropriations are also limited by statute to an amount equal to the cost
of performing certain required reappraisals of taxable property plus an amount
equal to the lesser of (i) five percent of Colorado personal income or (ii)
106% of the total General Fund appropriations for the previous fiscal year.
This restriction does not apply to any General Fund appropriations which are
required as a result of a new federal law, a final state or federal court
order or moneys derived from the increase in the rate or amount of any tax or
fee approved by a majority of the registered electors of the State voting at
any general election. In addition, the statutory limit on the level of General
Fund appropriations may be exceeded for a given fiscal year upon the
declaration of a State fiscal emergency by the State General Assembly. 

According to the Colorado Economic Perspective, Second Quarter, Fiscal Year
1996-97, December 20, 1996 (the "1997 Economic Report" ), which is
published by the Office of the State Planning and Budgeting, the fiscal year
1996 ending General Fund balance was $368.5 million, which was $211.8 million
over the combined Unappropriated Reserve and Emergency Reserve requirement.
The 1995 fiscal year ending General Fund balance was $486.7 million, or $260.7
million over the required Unappropriated Reserve and Emergency Reserve. Based
on the 1997 Economic Report estimates, the fiscal year 1997 ending General
Fund balance is expected to be approximately $396.3 million or $230.2 million
over the required Unappropriated Reserve and Emergency Reserve. The Governor's
proposed fiscal year 1998 budget shows total revenues of $4,772.2 million and
expenditures of $4,502.8 million, with an ending balance of $336.4 million, or
$159.7 million over the required Unappropriated Reserve and Emergency Reserve.

On November 3, 1992, voters in Colorado approved a constitutional amendment
(the "Amendment" ) which, in general, became effective December 31,
1992, and could restrict the ability of the State and local governments to
increase revenues and impose taxes. The Amendment applies to the State and all
local governments, including home rule entities ("Districts" ).
Enterprises, defined as government-owned businesses authorized to issue
revenue bonds and receiving under 10% of annual revenue in grants from all
Colorado state and local governments combined, are excluded from the
provisions of the Amendment. 

The provisions of the Amendment are unclear and have required judicial
interpretation. Among other provisions, beginning November 4, 1992, the
Amendment requires voter approval prior to tax increases, creation of debt, or
mill levy or valuation for assessment ratio increases. The Amendment also
limits increases in government spending and property tax revenues to specified
percentages. The Amendment requires that District property tax revenues yield
no more than the prior year's revenues adjusted for inflation, voter approved
changes and (except with regard to school districts) local growth in property
values according to a formula set forth in the Amendment. School districts are
allowed to adjust tax levies for changes in student enrollment. Pursuant to
the Amendment, local government spending is to be limited by the same formula
as the limitation for property tax revenues. The Amendment limits increases in
expenditures from the State General Fund and program revenues (cash funds) to
the growth in inflation plus the percentage change in State population in the
prior calendar year. The bases for initial spending and revenue limits are
fiscal year 1992 spending and 1991 property taxes collected in 1992. The bases
for spending and revenue limits for fiscal year 1994 and later years will be
the prior fiscal year's spending and property taxes collected in the prior
calendar year. Debt service changes, reductions and voter-approved revenue
changes are excluded from the calculation bases. The Amendment also prohibits
new or increased real property transfer tax rates, new State real property
taxes and local District income taxes. 

Litigation concerning several issues relating to the Amendment was filed in
the Colorado courts. The litigation dealt with three principal issues: (i)
whether Districts can increase mill levies to pay debt service on general
obligation bonds without obtaining voter approval; (ii) whether a multi-year
lease purchase agreement subject to annual appropriations is an obligation
which requires voter approval prior to execution of the agreement; and (iii)
what constitutes an "enterprise" which is excluded from the provisions
of the Amendment. In September, 1994, the Colorado Supreme Court held that
Districts can increase mill levies to pay debt service on general obligation
bonds issued after the effective date of the Amendment; in June, 1995, the
Colorado Supreme Court validated mill levy increases to pay general obligation
bonds issued prior to the Amendment. In late 1994, the Colorado Court of
Appeals held that multi-year lease-purchase agreements subject to annual
appropriation do not require voter approval. The time to file an appeal in
that case has expired. Finally, in May, 1995 the Colorado Supreme Court ruled
that entities with the power to levy taxes may not themselves be "
enterprises" for purposes of the Amendment; however, the Court did not
address the issue of how valid enterprises may be created. Litigation in the
"enterprise" arena may be filed in the future to clarify these issues.

According to the 1997 Economic Report, for fiscal year 1996, general fund
revenues (adjusted for cash funds that are exempt from the Amendment) were
$4,230.8 million and program revenues (cash funds) were $1,893.5 million, for
revenues totaling $6,124.3 million. During the calendar year 1995, population
and inflation grew at rates of 2.3% and 4.3%, respectively, for a combined
total limit of 6.6%. Accordingly, under the Amendment, increases in State
expenditures during the 1997 fiscal year cannot exceed $6,528.5 million and
the projected 1997 general fund and program revenues of $6,499.1 million are
under the limit. The limitation for fiscal year 1998 is 5.9% over revenues
during the 1997 fiscal year; accordingly, 1998 fiscal year revenues cannot
exceed $6,882.5 million. Fiscal year 1998 revenues are estimated to be
$6,786.6 million which is $95.9 million under the limitation.

There is also a statutory restriction on the amount of annual increases in
taxes that the various taxing jurisdictions in Colorado can levy without
electoral approval. This restriction does not apply to taxes levied to pay
general obligation debt. 

As the State experienced revenue shortfalls in the mid-1980s, it adopted
various measures, including impoundment of funds by the Governor, reduction of
appropriations by the General Assembly, a temporary increase in the sales tax,
deferral of certain tax reductions and inter-fund borrowings. On a GAAP basis,
the State had unrestricted General Fund balances at June 30 of approximately
$133.3 million in fiscal year 1992, $326.6 million in fiscal year 1993, $405.1
million in fiscal year 1994, $486.7 million for fiscal year 1995 and $368.5
million for fiscal year 1996. The 1997 Economic Report projects the
unrestricted General Fund ending balance to be approximately $368.5 million
for fiscal year 1997.

Revenues for the fiscal year ending June 30, 1996, showed Colorado's general
fund continuing to slow. Revenues grew by $272.3 million, to $4,268.7 million,
a 6.8% increase from 1995. However, this figure was down from the fiscal year
1995 pace of 7.3%. General Fund expenditures rose substantially and exceeded
revenues by $142.5 million. Reasons for this consist of a change in how the
state manages its emergency reserve, and a significant increase in the
transfer of reserves to the Capital Construction Fund, and the Police and Fire
Pension Association (increases of $29 million and $32 million, respectively).

For fiscal year 1996, the following tax categories generated the following
percentages of the State's $4,268.7 million total revenues (accrual basis);
individual income taxes represented 54.4% of gross fiscal year 1996 receipts;
sales, use, and other excise taxes represented 33.2% of gross fiscal year 1996
receipts; and corporate income taxes represented 4.8% of gross fiscal year
1996 receipts. For fiscal year 1997, General Fund revenues of approximately
$4,565.0 million are projected, and appropriations of approximately $4,151.9
million are projected. Revenue growth is expected to increase 6.9% over 1996
actual revenues and the ending fund balance, after reserve set-asides, is
predicted at $230.2 million. The percentages of General Fund revenue generated
by type of tax for fiscal year 1997 are not expected to be significantly
different from fiscal year 1996 percentages.

Under its constitution, the State of Colorado is not permitted to issue
general obligation bonds secured by the full faith and credit of the State.
However, certain agencies and instrumentalities of the State are authorized to
issue bonds secured by revenues from specific projects and activities. The
State enters into certain lease transactions which are subject to annual
renewal at the option of the State. In addition, the State is authorized to
issue short-term revenue anticipation notes. Local governmental units in the
State are also authorized to incur indebtedness. The major source of financing
for such local government indebtedness is an ad valorem property tax. In
addition, in order to finance public projects, local governments in the State
can issue revenue bonds payable from the revenues of a utility or enterprise
or from the proceeds of an excise tax, or assessment bonds payable from
special assessments. Colorado local governments can also finance public
projects through leases which are subject to annual appropriation at the
option of the local government. Local governments in Colorado also issue tax
anticipation notes. The Amendment requires prior voter approval for the
creation of any multiple fiscal year debt or other financial obligation
whatsoever, except for refundings at a lower rate or obligations of an
enterprise. 

Based on data published by the State of Colorado, Office of State Planning and
Budgeting as presented in the Economic Report, Colorado gained 74,966
employees in 1995. The 1995 increase was down about 10,000 from the 1994 gain,
but mirrored the 1993 employment increase. Services and retail trade were the
number one and two largest growing industries in Colorado in 1995, adding
28,766 (6.0% increase) and 20,905 (6.2% increase) employees, respectively.
Transportation, communications and public utilities reported the largest
percentage gain from 1994 to 1995, at 8.8%. Construction reported the fourth
largest employment gain over the year, at 5.2%, with increases about half of
what they had been in 1994 and 1993 due to the completion of the Denver
International airport. Mining continued to be the weakest industry sector,
with only a 0.5% increase.

The unemployment rate in Colorado remained stable at 4.2%, during both 1994
and 1995. In 1996, the Colorado unemployment rate increased to 4.5%, yet still
lower than the 5.4% unemployment rate for the nation. Colorado's job growth
rate increased 2.5% in 1996, a decrease from the 4.7% growth rate in 1995. In
comparison, the job growth rate for the United States in 1995 and 1996 was
2.7% and 2.0%, respectively. The services sector comprised 28% of Colorado's
1995 employment and generated 38% of the State's growth.

Personal income rose 8.0% in Colorado during 1995 as compared with 6.3% for
the nation as a whole. In 1996, Colorado's personal income dropped to 6.3%,
while still higher than the nation's 1996 rate of 5.6%.

Economic conditions in the State may have continuing effects on other
governmental units within the State (including issuers of the Bonds in the
Colorado IM-IT Trust), which, to varying degrees, have also experienced
reduced revenues as a result of recessionary conditions and other factors. 

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

The assets of the Colorado Trust will consist of interest-bearing obligations
issued by or on behalf of the State of Colorado ("Colorado" ) or
counties, municipalities, authorities or political subdivisions thereof (the
"Colorado Bonds" ) or by the Commonwealth of Puerto Rico (the "
Puerto Rico Bonds" ) (collectively, the "Bonds" ) the interest on
which is expected to qualify as exempt from Colorado income taxes.

Neither the Sponsor nor its counsel have independently examined the Bonds to
be deposited in and held in the Trust. However, although Chapman and Cutler
expresses no opinion with respect to the issuance of the Bonds, in rendering
its opinion expressed herein, it has 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 income tax imposed by the State that is
applicable to individuals and corporations (the "State Income Tax" ).
This opinion does not address the taxation of persons other than full time
residents of Colorado. 

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

Because Colorado income tax law is based upon the Federal law, the Colorado
IM-IT Trust is not an association taxable as a corporation for purposes of
Colorado income taxation. 

With respect to Colorado Unitholders, in view of the relationship between
Federal and Colorado tax computations described above:

Each Colorado Unitholder will be treated as owning a pro rata share of each
asset of the Colorado IM-IT Trust for Colorado income tax purposes in the
proportion that the number of Units of such Trust held by the Unitholder bears
to the total number of outstanding Units of the Colorado IM-IT Trust, and the
income of the Colorado IM-IT Trust will therefore be treated as the income of
each Colorado Unitholder under Colorado law in the proportion described and an
item of income of the Colorado IM-IT Trust will have the same character in the
hands of a Colorado Unitholder as it would have in the hands of the Trustee; 

Interest on Bonds that would not be includable in income for Colorado income
tax purposes when paid directly to a Colorado Unitholder will be exempt from
Colorado income taxation when received by the Colorado IM-IT Trust and
attributed to such Colorado Unitholder and when distributed to such Colorado
Unitholder; 

To the extent that interest income derived from the Colorado Trust by a
Unitholder with respect to Puerto Rico Bonds is exempt from state taxes
pursuant to 48 U.S.C.  \xa4  745, such interest will not be subject to the
Colorado State Income Tax.

Any proceeds paid under an insurance policy or policies issued to the Colorado
IM-IT Trust with respect to the Bonds in the Colorado IM-IT Trust which
represent maturing interest on defaulted Bonds held by the Trustee will be
excludable from Colorado adjusted gross income if, and to the same extent as,
such interest is so excludable for federal income tax purposes if paid in the
normal course by the issuer notwithstanding that the source of payment is from
insurance proceeds 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.

Each Colorado Unitholder will realize taxable gain or loss when the Colorado
IM-IT Trust disposes of a Bond (whether by sale, exchange, redemption, or
payment at maturity) or when the Colorado Unitholder redeems or sells Units at
a price that differs from original cost as adjusted for amortization of bond
discount or premium and other basis adjustments (including any basis reduction
that may be required to reflect a Colorado Unitholder's share of interest, if
any, accruing on Bonds during the interval between the Colorado Unitholder's
settlement date and the date such Bonds are delivered to the Colorado IM-IT
Trust, if later); 

Tax basis reduction requirements relating to amortization of bond premium may,
under some circumstances, result in Colorado Unitholders realizing taxable
gain when their Units are sold or redeemed for an amount equal to or less than
their original cost; and 

If interest on indebtedness incurred or continued by a Colorado Unitholder to
purchase Units in the Colorado IM-IT Trust is not deductible for federal
income tax purposes, it also will be non-deductible for Colorado income tax
purposes. 

Unitholders should be aware that all tax-exempt interest, including their
share of interest on the Bonds paid to the Colorado IM-IT Trust, is taken into
account for purposes of determining eligibility for the Colorado Property
Tax/Rent/Heat Rebate.

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


<TABLE>
<CAPTION>
Per Unit Information:                                                         Semi-     
                                                                 Monthly      Annual    
                                                                ------------ -----------
<S>                                                             <C>          <C>        
Calculation of Estimated Net Annual Unit Income:                                        
 Estimated Annual Interest Income per Unit..................... $     52.78  $    52.78 
 Less: Estimated Annual Expense per Unit <F1>.................. $      2.40  $     1.92 
 Less: Annual Premium on Portfolio Insurance per Unit..........         .16         .16 
 Estimated Net Annual Interest Income per Unit................. $     50.22  $    50.70 
Calculation of Estimated Interest Earnings per Unit:                                    
 Estimated Net Annual Interest Income per Unit................. $     50.22  $    50.70 
 Divided by 12 and 2, respectively............................. $      4.18  $    25.35 
Estimated Daily Rate of Net Interest Accrual per Unit.......... $    .13948  $   .14082 
Estimated Current Return Based on Public Offering Price <F2>...        5.02%       5.07%
Estimated Long-Term Return <F2>................................        5.03%       5.08%
Estimated Initial Monthly Distribution (June 1997)............. $      1.67             
Estimated Initial Semi-annual Distribution (July 1997).........              $     5.91 
Estimated Normal Distribution per Unit <F2>.................... $      4.18  $    25.35 
</TABLE>

<TABLE>
<CAPTION>
<S>                             <C>                                                                                            
Trustee's Annual Fee <F3>...... $.91 and $.51 per $1,000 principal amount of Bonds, respectively, for those portions of the    
                                Colorado IM-IT Trust under the monthly and semi-annual distribution plans                      
Record and Computation Dates... TENTH day of the month as follows: monthly--each month; semi-annual--January and July          
Distribution Dates............. TWENTY-FIFTH day of the month as follows: monthly--each month; semi-annual--                   
                                January and July                                                                               

- ----------
<FN>
<F1>Excluding insurance costs. The Estimated Annual Expenses are expected to
fluctuate periodically (see "Trust Administration--Fund Administration and
Expenses--Miscellaneous Expenses" in Part II of this Prospectus).

<F2>The Estimated Current Returns and Estimated Long-Term Returns are increased
for transactions entitled to a reduced sales charge. See "Unitholder
Explanations--Public Offering--General" in Part II of this Prospectus. For
a discussion of how these returns are calculated, see "Unitholder
Explanations--Estimated Current Returns and Estimated Long-Term Returns" 
in Part II of this Prospectus. These figures are based on estimated per Unit
cash flows. Estimated cash flows will vary with changes in fees and expenses,
with changes in current interest rates and with the principal prepayment,
redemption, maturity, call, exchange or sale of the underlying Securities. The
estimated cash flows for this Series are set forth under "Other
Matters--Estimated Cash Flows to Unitholders" .

<F3>Based on the size of the Trust on the Date of Deposit and assuming all
Unitholders had chosen the semi-annual distribution plan, the Trustee's
estimated annual fees for ordinary recurring services would initially amount
to $1,533. Assuming in the alternative that all Unitholders had elected the
monthly distribution plan, such fees would initially amount to $2,735.
</TABLE>

<TABLE>
COLORADO INSURED MUNICIPALS INCOME TRUST
SERIES 84 (IM-IT AND QUALITY MULTI-SERIES 291)
PORTFOLIO As of May 22, 1997

<CAPTION>
                                                                                                                     Offering      
                                                                                                                     Price To      
                                                                                                                     Colorado      
Aggregate     Name of Issuer, Title, Interest Rate and Maturity Date of either                    Redemption         IM-IT         
              Bonds Deposited or Bonds Contracted for<F1><F5>                         Rating<F2>  Feature<F3>        Trust<F4>     
- ------------- -------------------------------------------------------------------- -------------- ------------------ ------------- 
<S>           <C>                                                                  <C>            <C>                <C>           
$     250,000 Municipal Subdistrict of Northern Colorado, Water Conservancy                                                        
              District, Water Revenue Refunding Bonds, Series E   (AMBAC                          2004 @ 100                       
              Indemnity Insured)  #5.00% Due 12/1/2017............................            AAA 2011 @ 100 S.F.    $     234,533 
      160,000 University of Northern Colorado, Revenue Bonds, Auxiliary                                                            
              Facilities System (MBIA Insured)  #5.625% Due 6/1/2018..............            AAA 2005 @ 100               161,053 
      250,000 Stonegate Village Metropolitan District, Colorado, Refunding and                                                     
              Improvement General Obligation Bonds, Series A   (FSA Insured)                      2006 @ 101                       
              #5.50% Due 12/1/2021................................................            AAA 2017 @ 100 S.F.          247,935 
      295,000 City of Colorado Springs, Colorado, Airport Revenue Bonds, Series                   2006 @ 101                       
              1996A (Non-AMT) MBIA Insured  #5.25% Due 1/2/2022...................            AAA 2018 @ 100 S.F.          282,760 
      500,000 Puerto Rico Highway and Transportation Authority, Highway Revenue                                                    
              Refunding Bonds, Series X (MBIA Insured)  #5.00% Due 7/1/2022.......            AAA 2003 @ 101.50            463,560 
      550,000 City and County of Denver, Colorado, for and on Behalf of its                                                        
              Department of Aviation, Airport System Revenue Bonds, Series 1996D                  2006 @ 101                       
              (MBIA Insured)  #5.50% Due 11/15/2025...............................            AAA 2017 @ 100 S.F.          534,330 
      500,000 City of Colorado Springs, Colorado, Utilities Systems Revenue                       2006 @ 100                       
              Bonds, Series 1996A  #5.75% Due 11/15/2025..........................             AA 2024 @ 100 S.F.          503,240 
      250,000 Colorado Health Facilities Authority, Hospital Revenue Bonds (The                                                    
              Children's Hospital Association Project) Series 1996   (MBIA                        2006 @ 101                       
              Insured)  #5.25% Due 10/1/2026......................................            AAA 2016 @ 100 S.F.          238,070 
      250,000 Widefield, Colorado, Water and Sanitation District, Water and Sewer                                                  
              Revenue Refunding and Improvement Bonds, Series A (MBIA Insured)                    2007 @ 102                       
              #5.60% Due 12/1/2026................................................            AAA 2017 @ 100 S.F.          251,250 
$   3,005,000                                                                                                        $   2,916,731 
=============                                                                                                        ============= 
</TABLE>

- ----------
All of the Bonds in the portfolio are insured either by one of the Preinsured
Bond Insurers (as indicated in the Bond name) or under the portfolio insurance
policy obtained by the Trust from AMBAC Indemnity. See "Unitholder
Explanations--Insurance on the Bonds in the Insured Trusts" in Part II of
this Prospectus.

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

FLORIDA IM-IT TRUST 

- --------------------------------------------------------------------------
General. The Florida IM-IT Trust consists of 9 issues of Securities. One of
the Bonds in the Florida IM-IT Trust 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 to
total Florida IM-IT Trust) as follows: Certificate of Participation, 2 (25%);
Health Care, 2 (24%); Airport, 1 (16%); Wholesale Electric, 1 (16%); General
Obligation, 1 (8%); Public Building, 1 (8%) and Retail Electric/Gas/Telephone,
1 (3%). No Bond issue has received a provisional rating.

Risk Factors. Population. Historically, population growth has been a crucial
driving force for Florida's economy. It has accounted for the state's
tendency to outperform the U.S. economy in terms of job creation and total
income growth. Between 1960 and 1995, Florida's population grew by 9.2
million people, a 185% increase. This is more than four times the 46% growth
in U.S. population over the same period. The state's population has
accelerated since the FY 1990-91 recession, sparked by improving economies. In
1994, Florida ranked fourth in population with 13.9 million. By 1996,
Florida's population increased to 14.4 million, with projections of 15 million
by 1999. Florida's attraction, as both a growth and retirement state, has kept
net migration fairly steady with an average of 245,035 new residents a year
from 1990 through 1995. The U.S. average population increase since 1984 is
about 1% annually, while Florida's average annual rate of increase is about
2.3%. However, during 1992-1996, Florida's annual net migration increase has
averaged 1.82% and is predicted at 1.8% for 1997-98. Yet, Florida continues to
be the fastest growing of the eleven largest states. In addition to attracting
senior citizens to Florida as a place for retirement, the State is also
recognized as attracting a significant number of working age individuals.
Since 1985, the prime working age population (18-44) has grown at an average
annual rate of 2.2%. The share of Florida's total working age population
(18-59) to total State population is approximately 54%. This share is not
expected to change appreciably into the twenty-first century.

Income. The State's personal income has been growing strongly the last several
years and has generally outperformed both the United States as a whole and the
southeast in particular, according to the U.S. Department of Commerce and the
Florida Consensus Economic Estimating Conference. This is due to the fact that
Florida's population has been growing at a very strong pace and, since the
early 1970s, the State's economy has diversified so as to provide a broader
economic base. As a result, Florida's real per capita personal income has
tracked closely with the national average and has tracked above the southeast.
In fiscal years 1994-95 and 1995-96, Florida's per capita personal income was
$22,253, and $23,371 respectively, a 5.02% increase. The 1994-95 figure is
6.1% higher than per capita personal income in the southeast region and
represents 99% of the national figure. Florida's per capita personal income
is expected to increase 4.04% in fiscal year 1996-97 and 5.2% in fiscal year
1997-98.

Florida's economy is expected to slow some in the current fiscal year and in
FY 1997-98. An expected rise in interest rates in early 1997 should moderate
housing markets and consumption of durable goods. Overall, consumption can be
expected to stay in line with changes in income and jobs. Also, the
combination of an investment boom in earlier years and decelerating growth in
the overall economy should slow business investment through FY 1997-98.
Nevertheless, Florida's economy will outperform the nation's bolstered by
population growth well in excess of that for the United States.

Total income growth in Florida is expected to stabilize from its cyclical peak
of 4.6% in FY 1994-95, decelerating slightly to 4.5% in FY 1995-96 and falling
to 4.2% in FY 96-97. Total personal income is expected to rise to 4.4% by FY
1997-98 in Florida and 2.3% for the United States. Florida's growth rates for
per capita real income parallel those for total income, though at lower
levels, peaking at 2.6% in 1996, falling in 1997 to 2.3%, then achieving the
peak growth rate again by 1998.

Because Florida has a proportionately greater retirement age population,
property income (dividends, interest, and rent) and transfer payments (Social
Security and pension benefits, among other sources of income) are relatively
more important sources of income. For example, Florida's total wages and
salaries and other labor income in 1996 was 59% of total personal income,
while a similar figure for the nation was 68%. Property income accounted for
24% of total personal income in Florida in 1996 and transfer payments made up
17%. Property income and transfer payments for the U.S. were each 16%.
Transfer payments are typically less sensitive to the business cycle than
employment income and, therefore, act as stabilizing forces in weak economic
periods.

Employment. Since 1985, the State's population has increased an estimated
26.1%. In the same period, Florida's total non-farm employment has grown by
approximately 37.9%. Since 1985, the job creation rate in the State is almost
twice that of the nation as a whole. Contributing to the State's rapid rate of
growth in employment and income is international trade. Changes to its economy
have also contributed to the State's strong performance. The State is now less
dependent on employment from construction, construction-related manufacturing,
and resource-based manufacturing, which have declined as a proportion of total
State employment. The State's private sector employment is 86.4% of total
non-farm employment. While the southeast and the nation have a greater
proportion of manufacturing jobs, which tend to pay higher wages, service jobs
tend to be less sensitive to swings in the business cycle. The State has a
concentration of manufacturing jobs in high-tech and high value-added sectors,
such as electrical and electronic equipment, as well as printing and
publishing. These types of manufacturing jobs tend to be less cyclical. The
State's unemployment rate throughout the 1980's tracked below the nation's. As
the State's economic growth has slowed, its unemployment rate has tracked
above and below the national average. According to the U.S. Department of
Commerce, the Florida Department of Labor and Employment Security, and the
Florida Consensus Economic Estimating Conference (together, the "
Organization" ), the State's unemployment rate was 6.6% during 1994 and
5.5% during 1995. In November, 1996, the unemployment rate was 4.8%, giving an
11-month average in 1996 of 5.3%. The national unemployment rate in 1994 and
1995 was 6.1% and 5.6%, respectively, with an average in 1996 of 5.4%.

Consistent with income growth, Florida's non-farm employment growth increased
4.1%, 3.9%, and 3.2% in fiscal years ending in 1994, 1995, and 1996,
respectively.

The State's economy is expected to decelerate along with the nation, but is
expected to outperform the nation as a whole. Total non-farm employment in
Florida is expected to increase 2.9% or 180,000 new jobs in 1996-97 and remain
stable at 2.9% or 183,500 new jobs in 1997-98. In comparison, the U.S. growth
rate in 1997-98 is predicted at only 1.3%. Trade and services, the two
largest, account for more than half of the total non-farm employment. 

The strongest areas in job growth in Florida in FY 1997-98 are expected to be
in services and a combination of retail and wholesale trade. Services are
forecast to lead the economy, growing 4.3% (93,500 jobs) in FY 1997-98, and
accounting for about 51% of total new jobs in that year. Services is the
single largest source of employment in Florida, making up about 35% of total
non-farm employment in FY 1997-98. Health care accounts for about 26% of total
services employment.

Wholesale and retail trade is projected to increase 2.9% in FY 1997-98 (47,100
new jobs), which parallels general economic growth. This sector is the second
largest, with about 25% of all jobs in the state, and will contribute about
26% of the new jobs created in FY 1997-98. Construction will exhibit modest
growth of 2.5% (7,800 new jobs) reflecting stable construction activity
supported by population growth.

The slower growing sectors are expected to account for only 35% of total jobs
in Florida in 1997-98. Of these, government is the largest, with just under
15% of total jobs. Combined federal, state and local government jobs are
expected to grow 2% (19,500 new jobs) with most of this increase at the local
level. Job creation in transportation, communications, and public utilities
combined (less than 5% of total employment) is forecast to slow to 1.4% (4,500
new jobs) in FY 1997-98. This partly reflects current restructuring of the
industry. Manufacturing, with slightly more than 7% of total jobs, will have
the slowest positive growth rate among the major sectors in FY 1997-98, at
less than 1% (2,800 new jobs). However, over the same period, manufacturing
employment in the nation is projected to decline about 1%. This is generally
due to global competitive pressures forcing producers to substitute machinery
and equipment for labor through strong investment.

Tourism. Tourism is one of Florida's most important industries. Approximately
41.8 million tourists visited the State in 1993, as reported by the Florida
Department of Commerce. Although during the next several years the number of
visitors to Florida decreased, in 1995, there were more than 41 million
national and international visitors, and the peak reached in 1993 was almost
reached in 1996. The 1995 tourist industry generated $35.31 billion in sales
by Florida businesses, over $2 billion in sales tax revenue, and more than
732,800 Floridians were directly employed in travel related jobs. Visitors to
the State tend to arrive slightly more by air than by car. The State's tourist
industry over the years has become more sophisticated, attracting visitors
year-round and, to a degree, reducing its seasonality. By the end of fiscal
year 1997-98, 43.9 million domestic and international tourists are expected to
have visited the State, representing 3.2% growth from 1996-97.

Revenues and Expenses. Estimated fiscal year 1996-97 General Revenue plus
Working Capital and Budget Stabilization funds available to the State total
$16,601.7 million. Of the total General Revenue plus Working Capital and
Budget Stabilization funds available to the State, $15,566.9 million of that
is Estimated Revenues. With effective General Revenues plus Working Capital
Fund appropriations at $15,582.2 million, unencumbered reserves at the end of
1996-97 are estimated at $610.1 million with $219.4 million of this amount
from the Working Capital Fund. Estimated fiscal year 1997-98 General Revenue
plus Working Capital and Budget Stabilization funds available total $17,384.9
million, a 4.7% increase over 1996-97. The $16,301.5 million in Estimated
Revenues represents an increase of 4.7% over the previous year's Estimated
Revenues. Total estimated appropriations in the combined General Revenue and
Working Capital Fund for 1997-98 are $16,716.6 million, a 7.3% increase from
1996-97.

In fiscal year 1997-98, approximately 72% of the State's $16,716.6 million
General revenue will come from sales tax collections. Corporate income tax,
intangible personal property tax, and beverage tax will account for 8%, 4% and
3%, respectively, of total General Revenue Funds available during fiscal
1997-98. In that same year, expenditures for education, human services, and
criminal justice and corrections will amount to approximately 52%, 26%, and
16%, respectively, of total expenditures from the General Revenue Fund.

The State's sales and use tax (6%) currently accounts for the State's single
largest source of tax receipts. Slightly less than 10% of the State's sales
and use tax is designated for local governments and is distributed to the
respective counties in which collected for such use by the counties, and the
municipalities therein. In addition to this distribution, local governments
may assess (by referendum) a 0.5% or a 1.0% discretionary sales surtax within
their county. Proceeds from this local option sales tax are earmarked for
funding local infrastructure programs and acquiring land for public recreation
or conservation or protection of natural resources as provided under
applicable Florida law. Certain charter counties have other additional taxing
powers, and non-consolidated counties with a population in excess of 800,000
may levy a local option sales tax to fund indigent health care. It alone
cannot exceed 0.5% and when combined with the infrastructure surtax cannot
exceed 1.0%. For the fiscal year ended June 30, 1998, sales and use tax
receipts (exclusive of the tax on gasoline and special fuels) are expected to
total $12,035.9 million, an increase of 6.6% over fiscal year 1996-97.

The second largest source of State tax receipts is the tax on motor fuels.
However, these revenues are almost entirely dedicated trust funds for specific
purposes and are not included in the State's General Revenue Fund.

The State's second largest funding source for the General Revenue Fund is the
corporate income tax. All receipts of the corporate income tax are credited to
the General Revenue Fund. For the fiscal year ending June 30, 1998, receipts
from this source are estimated to be $1,290.1 million, an increase of 2.3%
from fiscal year 1996-97.

The State imposes an alcoholic beverage wholesale tax (excise tax) on beer,
wine, and liquor. This tax is one of the State's major tax sources, with
revenues estimated at $455.1 million in fiscal year 1997-98. Alcoholic
beverage tax receipts are expected to increase 1.4% from the previous year's
total. This tax generates 3.3% of the State's total General Revenue and the
revenues collected are deposited into the State's General Revenue Fund.

The State imposes a documentary stamp tax on deeds and other documents
relating to realty, corporate shares, bonds, certificates of indebtedness,
promissory notes, wage assignments, and retail charge accounts. The
documentary stamp tax collections are expected to total $870.6 million during
fiscal year 1997-98, a 3.7% increase from the previous fiscal year. In fiscal
year 1997-98, 62.63% of these taxes are to be deposited to the General Revenue
Fund.

The State imposes a gross receipts tax of 2.5% on electric, natural and
manufactured gas, and telecommunications services. All gross receipts
utilities tax collections are credited to the State's Public Education Capital
Outlay and Debt Service Trust Fund. In fiscal year 1997-98, this tax is
estimated at $607.1 million.

The State imposes an intangible personal property tax on stocks, bonds,
including bonds secured by liens in Florida real property, notes, governmental
leaseholds, and certain other intangibles not secured by a lien on Florida
real property. The annual rate of tax is 2 mils. The State also imposes a
non-recurring 2 mil tax on mortgages and other obligations secured by liens on
Florida real property. The intangible personal property tax provides 3.9% of
the revenues for the General Revenue Fund as well as funding the county
revenue sharing program. In fiscal year 1997-98, total intangible personal
property tax collections are estimated at $1,000.6 million, a 2% increase over
the prior year. Of the tax proceeds, 66.5% are distributed to the General
Revenue Fund.

The State began its own lottery in 1988. State law requires that lottery
revenues be distributed 50.0% to the public in prizes, 38.0% for use in
enhancing education, and the balance, 12.0%, for costs of administering the
lottery. Fiscal year 1994-95 lottery ticket sales totalled $2.3 billion,
providing education with approximately $874 million. In fiscal year 1997-98,
sales are estimated at $2,104 million with $799.4 million available for
education enhancements.

Debt-Balanced Budget Requirement. As of June 30, 1996, the state's net
outstanding debt totaled $9.2 billion. Approximately 67% is full faith and
credit bonds while the remaining 33% is comprised of revenue bonds pledging a
specific tax or revenue. The Governor's Recommended Budget for Fiscal Year
1997-98 includes six bond issues totaling $1.38 billion for construction of
schools, roads, bridges, and prisons, and the purchase of environmentally
sensitive lands. 

The State Constitution and statutes mandate that the State budget, as a whole,
and each separate fund within the State budget, be kept in balance from
currently available revenues each fiscal year. If the Governor or Comptroller
believe a deficit will occur in any State fund, by statute, he must certify
his opinion to the Administrative Commission, which is then authorized to
reduce all State agency budgets and releases by a sufficient amount to prevent
a deficit in any fund. Additionally, the State Constitution prohibits issuance
of State obligations to fund State operations.

Litigation. Currently under litigation are several issues relating to State
actions or State taxes that put at risk substantial amounts of General Revenue
Fund monies. Accordingly, there is no assurance that any such matters,
individually or in the aggregate, will not have a material adverse affect on
the State's financial position.

Florida law provides preferential tax treatment to insurers who maintain a
home office in the State. Certain insurers challenged the constitutionality of
this tax preference and sought a refund of taxes paid. Recently, the Florida
Supreme Court ruled in favor of the State. This case and others, along with
pending refund claims, total about $150 million.

The State imposes a $295 fee on the issuance of certificates of title for
motor vehicles previously titled outside the State. The State has been sued by
plaintiffs alleging that this fee violates the Commerce Clause of the U.S.
Constitution. The Circuit Court in which the case was filed has granted
summary judgment for the plaintiffs and has enjoined further collection of the
impact fee and has ordered refunds to all those who have paid the fee since
the collection of the fee went into effect. In the State's appeal of the lower
court's decision, the Florida Supreme Court ruled that this fee was
unconstitutional under the Commerce Clause. Thus, the Supreme Court approved
the lower court's order enjoining further collection of the fee and requiring
refund of the previously collected fees. The refund exposure of the State has
been estimated to be in excess of $88 million.

The State maintains a bond rating of Aa, AA and AA from Moody's Investors
Service, Standard & Poor's and Fitch, respectively, on the majority of its
general obligation bonds, although the rating of a particular series of
revenue bonds relates primarily to the project, facility, or other revenue
source from which such series derives funds for repayment. While these ratings
and some of the information presented above indicate that the State is in
satisfactory economic health, there can be no assurance that there will not be
a decline in economic conditions or that particular Florida Bonds purchased by
the fund will not be adversely affected by any such changes.

The sources for the information presented above include official statements
and financial statements of the State of Florida. While the Sponsor has not
independently verified this information, it has no reason to believe that the
information is not correct in all material respects.

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

The Bonds were accompanied by opinions of Bond Counsel to the respective
issuers thereof to the effect that the Bonds were exempt from the Florida
intangibles tax. Neither the Sponsor nor its counsel have independently
reviewed such opinions or examined the Bonds to be deposited in and held by
the Florida IM-IT Trust and have assumed the correctness as of the date of
deposit of the opinions of Bond Counsel. 

"Non-Corporate Unitholder" means a Unitholder of the Florida Trust who
is an individual not subject to the Florida state income tax on corporations
under Chapter 220, Florida Statutes and "Corporate Unitholder" means a
Unitholder of the Florida Trust that is a corporation, bank or savings
association or other entity subject to Florida state income tax on
corporations or franchise tax imposed on banks or savings associations under
Chapter 220, Florida Statutes.

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

For Florida state income tax purposes, the Florida IM-IT Trust will not be
subject to the Florida income tax imposed by Chapter 220, Florida Statutes. 

Because Florida does not impose an income tax on individuals, Non-Corporate
Unitholders residing in Florida will not be subject to any Florida income
taxation on income realized by the Florida IM-IT Trust. Any amounts paid to
the Florida IM-IT Trust or to Non-Corporate Unitholders under an insurance
policy issued to the Florida IM-IT Trust or the Sponsor which represent
maturing interest on defaulted obligations held by the Trustee will not be
subject to the Florida income tax imposed by Chapter 220, Florida Statutes. 

Corporate Unitholders with commercial domiciles in Florida will be subject to
Florida income or franchise taxation on income realized by the Florida IM-IT
Trust and on payments of interest pursuant to any insurance policy to the
extent such income constitutes "non business income" as defined by
Chapter 220 or is otherwise allocable to Florida under Chapter 220. Other
Corporate Unitholders will be subject to Florida income or franchise taxation
on income realized by the Florida IM-IT Trust (or on payments of interest
pursuant to any insurance policy) only to the extent that the income realized
does not constitute "non-business income" as defined by Chapter 220
and if such income is otherwise allocable to Florida under Chapter 220.

Units will be subject to Florida estate tax only if held by Florida residents.
However, the Florida estate tax is limited to the amount of the credit for
state death taxes provided for in Section 2011 of the Internal Revenue Code. 

Neither the Bonds nor the Units will be subject to the Florida ad valorem
property tax, the Florida intangible personal property tax or the Florida
sales or use tax.

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

<TABLE>
<CAPTION>
Per Unit Information:                                                             Semi-     
                                                                     Monthly      Annual    
                                                                    ------------ -----------
<S>                                                                 <C>          <C>        
Calculation of Estimated Net Annual Unit Income <F1>:                                       
 Estimated Annual Interest Income per Unit......................... $     52.76  $    52.76 
 Less: Estimated Annual Expense per Unit <F2>...................... $      2.26  $     1.76 
 Less: Annual Premium on Portfolio Insurance per Unit..............          --          -- 
 Estimated Net Annual Interest Income per Unit..................... $     50.50  $    51.00 
Calculation of Estimated Interest Earnings per Unit:                                        
 Estimated Net Annual Interest Income per Unit..................... $     50.50  $    51.00 
 Divided by 12 and 2, respectively................................. $      4.20  $    25.50 
Estimated Daily Rate of Net Interest Accrual per Unit.............. $    .14028  $   .14167 
Estimated Current Return Based on Public Offering Price <F1><F3>...        5.05%       5.10%
Estimated Long-Term Return <F3>....................................        5.10%       5.15%
Estimated Initial Monthly Distribution (June 1997)................. $      1.68             
Estimated Initial Semi-annual Distribution (July 1997).............              $     5.95 
Estimated Normal Distribution per Unit <F3>........................ $      4.20  $    25.50 
</TABLE>

<TABLE>
<CAPTION>
<S>                              <C>                                                                                            
Trustee's Annual Fee <F1><F4>... $.91 and $.51 per $1,000 principal amount of Bonds, respectively, for those portions of the    
                                 Florida IM-IT Trust under the monthly and semi-annual distribution plans                       
Record and Computation Dates.... TENTH day of the month as follows: monthly--each month; semi-annual--January and July          
Distribution Dates.............. TWENTY-FIFTH day of the month as follows: monthly--each month; semi-annual--                   
                                 January and July                                                                               

- ----------
<FN>
<F1>During the first year the Trustee will reduce its fee by approximately $.16
per Unit (which amount is the estimated interest to be earned per Unit prior
to the expected delivery dates for the "when, as and if issued" Bonds
included in this Trust). Should such estimated interest exceed such amount,
the Trustee will reduce its fee up to its annual fee. After the first year,
the Trustee's fee will be that amount indicated above. Estimated Annual
Interest Income per Unit will be increased to $52.92. Estimated Annual Expense
per Unit (excluding insurance) will be increased to $2.42 and $1.92 under the
monthly and semi-annual distribution plans, respectively; and Estimated Net
Annual Interest Income per Unit will remain the same as shown. See "
Estimated Current Returns and Estimated Long-Term Returns" in Part II of
this Prospectus.

<F2>Excluding insurance costs. The Estimated Annual Expenses are expected to
fluctuate periodically (see "Trust Administration--Fund Administration and
Expenses--Miscellaneous Expenses" in Part II of this Prospectus).

<F3>The Estimated Current Returns and Estimated Long-Term Returns are increased
for transactions entitled to a reduced sales charge. See "Unitholder
Explanations--Public Offering--General" in Part II of this Prospectus. For
a discussion of how these returns are calculated, see "Unitholder
Explanations--Estimated Current Returns and Estimated Long-Term Returns" 
in Part II of this Prospectus. These figures are based on estimated per Unit
cash flows. Estimated cash flows will vary with changes in fees and expenses,
with changes in current interest rates and with the principal prepayment,
redemption, maturity, call, exchange or sale of the underlying Securities. The
estimated cash flows for this Series are set forth under "Other
Matters--Estimated Cash Flows to Unitholders" .

<F4>Based on the size of the Trust on the Date of Deposit and assuming all
Unitholders had chosen the semi-annual distribution plan, the Trustee's
estimated annual fees for ordinary recurring services would initially amount
to $1,573. Assuming in the alternative that all Unitholders had elected the
monthly distribution plan, such fees would initially amount to $2,807.
</TABLE>


<TABLE>
FLORIDA INSURED MUNICIPALS INCOME TRUST
SERIES 115 (IM-IT AND QUALITY MULTI-SERIES 291)
PORTFOLIO As of May 22, 1997
<CAPTION>
                                                                                                               Offering            
                                                                                                               Price To            
                                                                                                               Florida             
Aggregate     Name of Issuer, Title, Interest Rate and Maturity Date of                     Redemption         IM-IT               
              either Bonds Deposited or Bonds Contracted for<F1><F5>            Rating<F2>  Feature<F3>        Trust<F4>           
- ------------- -------------------------------------------------------------- -------------- ------------------ -------------       
<S>           <C>                                                            <C>            <C>                <C>          <C>    
$     500,000 Dade County, Florida, School Board Certificates of                            2006 @ 101                             
              Participation (AMBAC Indemnity Insured)  #5.70% Due 8/1/2016..            AAA 2012 @ 100 S.F.    $     502,500       
       85,000 Tampa, Florida, Utility Tax Capital Appreciation Revenue                                                             
              Bonds (AMBAC Indemnity Insured)  #0.00% Due 4/1/2020..........            AAA                           23,521 <F6>  
      500,000 Dade County Health Facilities Authority (Florida) Hospital                                                           
              Revenue Refunding Bonds, Series 1993A (Baptist Hospital of                    2003 @ 101                             
              Miami Project) MBIA Insured  #5.25% Due 5/15/2021.............            AAA 2014 @ 100 S.F.          473,275       
      250,000 Orange County, Florida, School Board Certificates of                                                                 
              Participation, Series A (MBIA Insured)  #5.375% Due 8/1/2022..            N/R 2007 @ 101               242,053       
      500,000 Florida Municipal Power Agency, Revenue Bonds, All                                                                   
              Requirements Power Supply Project, Series 1993   (AMBAC                       2003 @ 101                             
              Indemnity Insured)  #5.10% Due 10/1/2025......................            AAA 2015 @ 100 S.F.          460,530       
      250,000 Lakeland, Florida, Hospital System Revenue Refunding Bonds,                                                          
              Lakeland Regional Medical Center Project (MBIA Insured)                       2006 @ 102                             
              #5.25% Due 11/15/2025.........................................            AAA 2017 @ 100 S.F.          236,160       
      500,000 Pensacola, Florida, Airport Revenue Bonds, Series A   (MBIA                   2007 @ 102                             
              Insured)  #5.75% Due 10/1/2027##..............................            AAA 2018 @ 100 S.F.          504,100       
      250,000 Tampa, Florida, Occupational License Unlimited Tax-General                                                           
              Obligation Bonds, Series 1996B (FGIC Insured)  #5.50% Due                     2006 @ 102                             
              10/1/2027.....................................................            AAA 2019 @ 100 S.F.          245,107       
      250,000 Broward County, Florida, Professional Sports Facilities, Tax                                                         
              Revenue Bonds, Civic Arena Project, Series A (MBIA Insured)                   2006 @ 101                             
              #5.625% Due 9/1/2028..........................................            AAA 2022 @ 100 S.F.          248,503       
$   3,085,000                                                                                                  $   2,935,749       
=============                                                                                                  =============       
</TABLE>

- ----------
All of the Bonds in the portfolio are insured by one of the Preinsured Bond
Insurers as indicated in the Bond name. See "Unitholder
Explanations--Insurance on the Bonds in the Insured Trusts" in Part II of
this Prospectus.

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

SOUTH CAROLINA QUALITY TRUST   

- --------------------------------------------------------------------------
General. The South Carolina Quality Trust consists of 8 issues of Securities.
One of the Bonds in the South Carolina Quality Trust 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 to total South Carolina Quality Trust) as follows: Health
Care, 2 (33%); Water and Sewer, 2 (19%); Certificate of Participation, 1
(16%); General Purpose, 1 (16%); General Obligation, 1 (8%) and Retail
Electric/Gas/Telephone, 1 (8%). No Bond issue has received a provisional
rating.

Risk Factors. Although most of the Bonds in the South Carolina Quality Trust
are revenue obligations or general obligations of local governments or
authorities rather than general obligations of the State of South Carolina
itself, there can be no assurance that any financial difficulties the State
may experience will not adversely affect the market value or marketability of
the Bonds or the ability of the respective obligors to pay interest on or
principal of the Bonds. The information regarding the financial condition of
the State is included for the purpose of providing information about general
economic conditions that may affect issuers of the Bonds in South Carolina. 

South Carolina is primarily a manufacturing state. In 1994, nearly one-quarter
of all jobs in the State were in the manufacturing industry, compared to
fifteen percent nationally. While the textile industry is still the major
industrial employer in the State, since 1950 the State's economy has undergone
a gradual transition. The economic base of the State has diversified as the
trade and service sectors developed and with the added development of the
durable goods manufacturing industries, South Carolina's economy now resembles
more closely that of the United States. 

Personal income in South Carolina grew five and four-tenths percent (5.4%)
during the third quarter of 1994 compared to income growth of six and
three-tenths percent (6.3%) nationwide. During all of 1993 personal income
grew at an average annual rate of five and one-tenths percent (5.1%) in South
Carolina. During the same period the nation's income grew four and four-tenths
percent (4.4%) and personal income in the Southeast region grew five and
seven-tenths percent (5.7%). Over the five year period 1988-1993 personal
income in South Carolina rose at a compounded annual rate of six and
three-tenths percent (6.3%), matching the annual income growth for the
Southeast region, and outpacing the five and seven-tenths percent (5.7%)
growth in the United States in the same period. 

Through January, 1995, the State's economy has added 36,100 jobs compared to
the same period in 1994, employment in the State increased two and four-tenths
percent (2.4%) while the rate of employment growth in the United States was
two and six-tenths percent (2.6%). Monthly unemployment rates in the State
have equaled or been above comparable national rates during 1994. The
unemployment rate for January, 1995, was the same as the nation's rate at five
and seven-tenths percent (5.7%).

The State Constitution requires the General Assembly to provide a balanced
budget and requires that if there be a deficit, such deficit shall be provided
for in the succeeding fiscal year. The State Constitution also provides that
the State Budget and Control Board may, if a deficit appears likely, effect
such reductions in appropriations as may be necessary to prevent a deficit. At
the November 6, 1984 general election there was approved a constitutional
amendment providing that annual increases in State appropriations may not
exceed the average growth rate of the economy of the State and that the annual
increase in the number of State employees may not exceed the average growth of
population of the State. The State Constitution also establishes a General
Reserve Fund to be maintained in an amount equal to 4% of General Fund revenue
for the latest fiscal year. Despite the efforts of the State Budget and
Control Board, deficits were experienced in each of the fiscal years ended
June 30, 1981, June 30, 1982, June 30, 1985 and June 30, 1986. All deficits
have been funded out of the General Reserve Fund. For the fiscal years ending
June 30, 1983 and 1984, the State had cash surpluses. As of June 30, 1985 the
balance in the General Reserve Fund was $89,100,000. 

In 1993 the General Assembly provided that beginning with appropriations for
fiscal year 1994-1995, appropriations in the annual general appropriations act
may not exceed the base revenue estimate. The base revenue estimate is defined
as the lesser of (i) the total of recurring general fund revenues collected in
the latest completed fiscal year before the General Assembly first considers
the annual general appropriations bill plus an increase of seventy-five
percent of the difference between the general fund revenue estimate of the
Board of Economic Advisors for the upcoming fiscal year and the actual revenue
collections from the latest completed fiscal year; or (ii) the Board of
Economic Advisors general fund revenue estimate for the upcoming fiscal year.

At its July, 1985 meeting the State Budget and Control Board, acting upon
advice that a shortfall in General Fund revenues for the fiscal year ending
June 30, 1985 might develop, froze all supplemental appropriations pending the
final accounting of the General Fund for fiscal year 1985. On August 8, 1985,
the Office of the Comptroller General advised the State Budget and Control
Board that General Fund expenditures for the fiscal year ended June 30, 1985
did exceed General Fund revenues by $11,936,636. Obedient to the
constitutional mandate that a casual deficit shall be provided for in the
succeeding fiscal year, the State Budget and Control Board delayed certain
hiring and capital improvements scheduled to be made in fiscal year 1986 in an
amount sufficient to meet the fiscal year 1985 budget shortfall. In January of
the fiscal year ended June 30, 1986 the State Budget and Control Board was
advised of a possible shortfall of $46,346,968. The Board immediately reduced
State agency appropriations by the amount of the anticipated shortfall.
Notwithstanding this action, at the end of fiscal year 1986, it became
apparent that a shortfall would result. In August of 1986, the State Budget
and Control Board voted to fund the deficit by transferring $37,353,272 from
the General Reserve Fund to the General Fund, bringing the balance in the
General Reserve Fund to $51.8 million. 

At the November 5, 1986 meeting of the Budget and Control Board, the Board of
Economic Advisors advised that it had reduced its revenue estimate for the
current fiscal year by $87,434,452. As required by the provisions of the
Capital Expenditure Fund, the Board applied $27,714,661 budgeted for this fund
to the anticipated shortfall. This action left a remaining shortfall of
$59,719,791 which the Budget and Control Board funded by imposing a 2.6% cut
in expenditures. In a February, 1987 meeting of the Board, a further cut in
expenditures of 0.8% was ordered. 

After net downward revisions of $122 million in estimated revenues during the
year, the actual revenue collections exceeded the final estimate of $37
million, resulting in a surplus for the fiscal year ending June 30, 1987, of
$20.5 million. The General Reserve Fund received $6.6 million during the year
in accordance with the Appropriation Act, and $17 million of the year-end
surplus was transferred to the General Reserve Fund, bringing the balance in
the General Reserve Fund to $75.4 million at June 30, 1987. 

On August 5, 1988, it was announced that for the fiscal year ending June 30,
1988, the Budgetary General Fund had a surplus of $107.5 million. The surplus
resulted from a $117.3 million excess of revenues over expenditures. The State
will use $52.6 million of the surplus to fund supplemental appropriations,
$28.3 million to fund the Capital Reserve, and $20.5 million for an early
buy-out of a school bus lease agreement. The General Assembly will decide how
the State will spend the remaining $6.1 million. 

The General Reserve Fund received $25.1 million during the 1987-88 fiscal year
in accordance with the Appropriation Act. During the year, the General
Assembly reduced the required funding of the General Reserve Fund from 4% to
3% of the latest completed fiscal year's actual revenue. The General Assembly
used $14.4 million of the resulting excess to fund the 1987-1988 Supplemental
Appropriation Act, leaving $86.1 million in the General Reserve Fund at June
30, 1988. The full-funding amount at that date, however, was only $80.8
million. In accordance with the 1988-1989 Appropriation Act, the excess of
$5.3 million will help fund 1988-1989 appropriations. 

At the November 8, 1988 general election there was approved a constitutional
amendment reducing from 4% to 3% the amount of General Fund revenue which must
be kept in the General Reserve Fund, and removing the provisions requiring a
special vote to adjust this percentage. The amendment also created a Capital
Reserve Fund equal to 2% of General Fund revenue. Before March 1 of each year,
the Capital Reserve Fund must be used to offset mid-year budget reductions
before mandating cuts in operating appropriations, and after March 1, the
Capital Reserve Fund may be appropriated by a special vote in separate
legislation by the General Assembly to finance in cash previously authorized
capital improvement bond projects, retire bond principal or interest on bonds
previously issued, and for capital improvements or other nonrecurring purposes
which must be ranked in order of priority of expenditure. Monies in the
Capital Reserve Fund not appropriated or any appropriation for a particular
project or item which has been reduced due to application of the monies to
year-end deficit, must go back to the General Fund. 

For the fiscal year ended June 30, 1989, the State had a surplus of
$129,788,135. At June 30, 1989, the balance in the General Reserve Fund was
$87,999,428. 

Because of anticipated revenue shortfalls for the fiscal year 1989-1990, the
State Budget and Control Board committed $42.4 million of the $58.7 million
Capital Reserve Fund in April, 1990. Lack of sufficient funding at year end
resulted in an additional use of $4.5 million from the Capital Reserve Fund.
After the above reductions, the State had a fiscal year 1989-1990 surplus of
$13,159,892 which was used to fund supplemental appropriations of $1,325,000
and the Capital Reserve Fund at $11,834,892. At June 30, 1990, the balance in
the General Reserve Fund was $94,114,351. 

During 1990-91 fiscal year, the State Budget and Control Board has approved
mid-year budget changes in November of 1990 and again in February of 1991, to
offset lower revenue estimates. Those changes included committing the Capital
Reserve Fund appropriation ($62,742,901) and reducing agency appropriations in
an additional amount necessary to offset (together with automatic expenditure
reductions that are tied to revenue levels) what would otherwise be a
projected deficit of approximately $132.6 million. On May 14 and May 21, 1991,
the Budget and Control Board, responding to April revenue figures and
unofficial estimates indicating an additional shortfall of $30 to $50 million,
ordered an immediate freeze on all personnel activities, from hiring to
promotions; a freeze on purchasing, with limited exceptions; and an indefinite
halt to new contracts and contract renewals. The Board also asked the General
Assembly for the power to furlough government workers periodically during the
next fiscal year. 

In the past, the State's budgetary accounting principles allowed revenue to be
recorded only when the State received the related cash. On July 30, 1991, the
Budget and Control Board approved a change in this principle for sales tax
revenue beginning with the fiscal year ended June 30, 1991. The Board's
resolution requires that sales taxes collected by merchants in June and
received by the State in July be reported as revenue in June rather than in
July. This change resulted in a $5.2 million decrease in reported 1990-91
sales tax revenue and a one-time $83.1 million addition to fund balance. The
one-time adjustment increases the fund balance to the level it would be if the
new principle had been in effect in years before 1990-91. Following such
action, the year-end balance in the General Reserve Fund was $33.4 million. 

At its July 30, 1991, meeting the Budget and Control Board also took action
with respect to the 1991-92 fiscal year. On July 26, 1991, the Board of
Economic Advisors advised the Budget and Control Board that it projected a
revenue shortfall of $148 million for the fiscal year 1991-92 budget of $3.581
billion. In response, the Budget and Control Board eliminated the two percent
(2%) Capital Reserve Fund appropriation of $65.9 million and reduced other
expenditures across the board by three percent (3%). On February 10, 1992, the
Board of Economic Advisers advised the Budget and Control Board that it had
revised its estimate of revenues for the current fiscal year downward by an
additional $55 million. At its February 11, 1992 meeting, the Budget and
Control Board responded by imposing an additional one percent (1%) across the
board reduction of expenditures (except with respect to approximately $10
million for certain agencies). At its February 13, 1992 meeting, the Budget
and Control Board restored a portion of the one percent (1%) reduction to four
(4) education-related agencies totalling approximately $5.7 million. These
expenditure reduction measures, when coupled with revenue increases projected
by the Budget and Control Board, resulted in an estimated balance of
approximately $1.4 million in the General Fund for the fiscal year 1991-92.
Despite such actions, expenditures exceeded revenues by $38.2 million and, as
required by the South Carolina Constitution, such amount was withdrawn from
the General Reserve Fund to cover the shortfall.

Responding to these recurrent operating deficits, Standard & Poor's Corp. has
placed the State's AAA-rated general obligation debt on its CreditWatch, and
on January 29, 1993, this rating was reduced to AA+. 

On August 22, 1992, the Budget and Control Board adopted a plan to reduce
appropriations under the 1992 Appropriations Act because of revenue shortfall
projections of approximately $200 million for the 1992-93 fiscal year. These
reductions were based on the rate of growth in each agency's budget over the
past year. On September 15, 1992, the Supreme Court of South Carolina enjoined
the Budget and Control Board from implementing its proposed plan for budget
reductions on the grounds that the Board had authority to make budget
reductions only across the board based on total appropriations. In response to
this decision, the Board instituted a 4% across the board reduction. On
November 10, 1992, the Budget and Control Board permanently reduced the $88.1
million in appropriations which were set aside on September 15, 1992. This
action along with improved actual revenue collections created a budgetary
surplus of approximately $101 million. 

For the Fiscal Year ended June 30,1994, the State had a budgetary surplus of
$273.48 million.

Prospective investors should study with care the portfolio of Bonds in the
South Carolina Quality Trust and should consult with their investment advisers
as to the merits of particular issues in the portfolio. 

Tax Status. For a discussion of the Federal tax status of income earned on
South Carolina Quality Trust Units, see "Federal Tax Status" in Part
II of this Prospectus. 

In the opinion of Sinkler & Boyd, special counsel to the Fund for South
Carolina tax matters, under existing South Carolina law: 

(1)By the provision of paragraph (j) of Section 3 of Article 10 of the South
Carolina Constitution (revised 1977) intangible personal property is
specifically exempted from any and all ad valorem taxation. 

(2)Pursuant to the provisions of Section 12-7-430(b), as interpreted by South
Carolina Revenue Ruling #91-15, interest from obligations issued by the State
of South Carolina or any of its political subdivisions, as well as interest
derived from bonds issued by the Government of Puerto Rico, which is exempt
from federal income taxes is exempt from income taxes and that the exemption
so granted extends to all recipients of interest paid thereon through the
Trust. (This opinion does not extend to so-called 63-20 obligations.) 

(3)The income of the Trust would be treated as income to each Unitholder of
the Trust in the proportion that the number of Units of the Trust held by the
Unitholder bears to the total number of Units of the Trust outstanding. For
this reason, interest derived by the Trust that would not be includable in
income for South Carolina income tax purposes when paid directly to a South
Carolina Unitholder will be exempt from South Carolina income taxation when
received by the Trust and attributed to such South Carolina Unitholder. 

(4)Each Unitholder will recognize gain or loss for South Carolina state income
tax purposes if the Trustee disposes of a Bond (whether by sale, payment on
maturity, retirement or otherwise) or if the Unitholder redeems or sells his
Unit. 

(5)The Trust would be regarded, under South Carolina law, as a common trust
fund and therefore not subject to taxation under any income tax law of South
Carolina. 

The above described opinion of Sinkler & Boyd has been concurred in by an
informal ruling of the South Carolina Tax Commission pursuant to Section
12-3-170 of the South Carolina Code.


   
<TABLE>

<CAPTION>
Per Unit Information:                                                             Semi-     
                                                                     Monthly      Annual    
                                                                    ------------ -----------
<S>                                                                 <C>          <C>        
Calculation of Estimated Net Annual Unit Income <F1>:                                       
 Estimated Annual Interest Income per Unit......................... $     53.00  $    53.00 
 Less: Estimated Annual Expense per Unit <F2>...................... $      2.32  $     1.85 
 Estimated Net Annual Interest Income per Unit..................... $     50.68  $    51.15 
Calculation of Estimated Interest Earnings per Unit:                                        
 Estimated Net Annual Interest Income per Unit..................... $     50.68  $    51.15 
 Divided by 12 and 2, respectively................................. $      4.22  $    25.57 
Estimated Daily Rate of Net Interest Accrual per Unit.............. $    .14078  $   .14210 
Estimated Current Return Based on Public Offering Price <F1><F3>...        5.07%       5.12%
Estimated Long-Term Return <F3>....................................        5.10%       5.15%
Estimated Initial Monthly Distribution (June 1997)................. $      1.68             
Estimated Initial Semi-annual Distribution (November 1997).........              $    23.02 
Estimated Normal Distribution per Unit <F3>........................ $      4.22  $    25.57 
</TABLE>

<TABLE>
<CAPTION>
<S>                              <C>                                                                                               
Trustee's Annual Fee <F1><F4>... $.91 and $.51 per $1,000 principal amount of Bonds, respectively, for those portions of the South 
                                 Carolina Quality Trust under the monthly and semi-annual distribution plans                       
Record and Computation Dates.... TENTH day of the month as follows: monthly--each month; semi-annual--May and November             
Distribution Dates.............. TWENTY-FIFTH day of the month as follows: monthly--each month; semi-annual--                      
                                 May and November                                                                                  

- ----------
<FN>
<F1>During the first year the Trustee will reduce its fee by approximately $.06
per Unit (which amount is the estimated interest to be earned per Unit prior
to the expected delivery dates for the "when, as and if issued" Bonds
included in this Trust). Should such estimated interest exceed such amount,
the Trustee will reduce its fee up to its annual fee. After the first year,
the Trustee's fee will be that amount indicated above. Estimated Annual
Interest Income per Unit will be increased to $53.06. Estimated Annual Expense
per Unit will be increased to $2.38 and $1.91 under the monthly and
semi-annual distribution plans, respectively; and Estimated Net Annual
Interest Income per Unit will remain the same as shown. See "Estimated
Current Returns and Estimated Long-Term Returns" in Part II of this
Prospectus.
    

<F2>The estimated annual expenses are expected to fluctuate periodically (see "
Trust Administration--Fund Administration and Expenses--Miscellaneous
Expenses" in Part II of this Prospectus).

<F3>The Estimated Current Returns and Estimated Long-Term Returns are increased
for transactions entitled to a reduced sales charge. See "Unitholder
Explanations--Public Offering--General" in Part II of this Prospectus. For
a discussion of how these returns are calculated, see "Unitholder
Explanations--Estimated Current Returns and Estimated Long-Term Returns" 
in Part II of this Prospectus. These figures are based on estimated per Unit
cash flows. Estimated cash flows will vary with changes in fees and expenses,
with changes in current interest rates and with the principal prepayment,
redemption, maturity, call, exchange or sale of the underlying Securities. The
estimated cash flows for this Series are set forth under "Other
Matters--Estimated Cash Flows to Unitholders" .

<F4>Based on the size of the Trust on the Date of Deposit and assuming all
Unitholders had chosen the semi-annual distribution plan, the Trustee's
estimated annual fees for ordinary recurring services would initially amount
to $1,576. Assuming in the alternative that all Unitholders had elected the
monthly distribution plan, such fees would initially amount to $2,812.
</TABLE>


<TABLE>
SOUTH CAROLINA INVESTORS' QUALITY TAX-EXEMPT TRUST
SERIES 86 (IM-IT AND QUALITY MULTI-SERIES 291)
PORTFOLIO As of May 22, 1997
<CAPTION>
                                                                                                                     Offering      
                                                                                                                     Price To      
                                                                                   Rating<F2>                                      
                                                                                                                     South         
                                                                                   Standard                          Carolina      
 Aggregate        Name of Issuer, Title, Interest Rate and Maturity Date of        & Poor's      Redemption          Quality       
 Principal<F1>    either Bonds Deposited or  Bonds Contracted for<F1><F5>           Moody's      Feature<F3>         Trust<F4>     
- ----------------- ---------------------------------------------------------------- ------------- ------------------ -------------- 
<S>               <C>                                                              <C>    <C>    <C>                <C>            
$         250,000 Orangeburg County, South Carolina, School District No. 8 (MBIA                                                   
                  Insured)  #5.40% Due 5/1/2020##.................................    AAA    Aaa 2007 @ 101         $      244,200 
          500,000 Charleston County, South Carolina, Charleston Public Facilities                                                  
                  Corporation, Certificates of Participation, Series 1995 (MBIA                  2005 @ 101                        
                  Insured)  #5.50% Due 12/1/2020..................................    AAA    Aaa 2016 @ 100 S.F.           489,630 
          500,000 South Carolina, State Public Service Authority, Revenue                                                          
                  Refunding Bonds, Series C (AMBAC Indemnity Insured)  #5.125%                   2003 @ 102                        
                  Due 1/1/2021....................................................    AAA    Aaa 2019 @ 100 S.F.           464,495 
          135,000 Greenville, South Carolina, Waterworks Revenue Bonds  #5.50%                   2007 @ 102                        
                  Due 2/1/2022....................................................     AA    Aa1 2018 @ 100 S.F.           132,984 
          505,000 Greenville Hospital System, South Carolina, Hospital Facilities                2006 @ 102                        
                  Revenue Bonds, Series 1996B  #5.25% Due 5/1/2023................    AA-    Aa3 2018 @ 100 S.F.           473,049 
          250,000 Piedmont Municipal Power Agency, South Carolina, Electric                                                        
                  Revenue Refunding Bonds, Series 1993 (MBIA Insured)  #5.375%                                                     
                  Due 1/1/2025....................................................    AAA    Aaa 2014 @ 100 S.F.           244,405 
          500,000 Spartanburg County, South Carolina, Health Services District                                                     
                  Incorporated, Hospital Revenue Bonds, Series A (MBIA Insured)                  2007 @ 102                        
                  #5.50% Due 4/15/2027............................................    AAA    Aaa 2018 @ 100 S.F.           488,190 
          450,000 Spartanburg, South Carolina, Sanitation Sewer District, Sewer                                                    
                  System Revenue Improvement Bonds (MBIA Insured)  #5.50% Due                    2007 @ 101                        
                  6/1/2027........................................................    AAA    Aaa 2021 @ 100 S.F.           442,544 
$       3,090,000                                                                                                   $    2,979,497 
=================                                                                                                   ============== 
</TABLE>

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

As of the Date of Deposit: May 22, 1997

- --------------------------------------------------------------------------
(1)All Securities 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. At the Date of Deposit, Securities may have been delivered to the
Sponsor pursuant to certain of these contracts; the Sponsor has assigned to
the Trustee all of its right, title and interest in and to such Securities.
Contracts to acquire Securities were entered into during the period from May
14, 1997 to May 21, 1997. These Securities have expected settlement dates
ranging from May 22, 1997 to June 4, 1997 (see "Unitholder
Explanations--Settlement of Bonds in the Trusts" in Part II of this
Prospectus).


(2)All ratings are by Standard & Poor's unless otherwise indicated. "*" 
 indicates that the rating of the Bond is by Moody's. The ratings represent
the latest published ratings by the respective rating agency or, if not
published, represent private letter ratings or those ratings expected to be
published by the respective rating agency. "Y" indicates that such
rating is contingent upon physical receipt by the respective rating agency of
a policy of insurance obtained by the issuer of the bonds involved and issued
by the Preinsured Bond Insurer named in the bond's title. A commitment for
insurance in connection with these bonds has been issued by the Preinsured
Bond Insurer named in the bond's title. "N/R" indicates that the
applicable rating service did not provide a rating for that particular
Security. For a brief description of the rating symbols and their related
meanings, see "Description of Ratings" in Part II of this Prospectus.

(3)There is shown under this heading the year in which each issue of Bonds is
initially or currently callable and the call price for that year. Each issue
of Bonds 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. For a
general discussion of certain of these events, see "Unitholder
Explanations--Settlement of Bonds in the Trusts--Risk Factors" in Part II
of this Prospectus. Distributions will generally be reduced by the amount of
the income which would otherwise have been paid with respect to redeemed
Securities and there will be distributed to Unitholders the principal amount
and any premium received on such redemption. The Estimated Current Return and
Estimated Long-Term Return in this event may be affected by such redemptions.
For the Federal tax effect on Unitholders of such redemptions and resultant
distributions, see "Federal Tax Status" in Part II of this Prospectus.

(4)Evaluation of Securities is made on the basis of current offering prices
for the Securities. The offering prices are greater than the current bid
prices of the Securities which is the basis on which Unit value is determined
for purposes of redemption of Units (see "Unitholder Explanations--Public
Offering--Offering Price" in Part II of this Prospectus).

(5)Other information regarding the Bonds in each Trust, as of the Date of
Deposit, is as follows: 


<TABLE>
<CAPTION>
                                                               Annual                   
                          Annual                    Profit     Interest    Bid Side     
                          Insurance   Cost to       (Loss) to  Income to   Evaluation   
Trust                     Cost        Sponsor       Sponsor    Trust       of  Bonds    
                          ----------- ------------- ---------- ----------- -------------
<S>                       <C>         <C>           <C>        <C>         <C>          
California IM-IT......... $        -- $   2,847,957 $   21,221 $   160,548 $   2,846,621
Colorado IM-IT........... $       500 $   2,896,263 $   20,468 $   161,863 $   2,894,194
Florida IM-IT............ $        -- $   2,914,585 $   21,164 $   163,375 $   2,912,930
South Carolina Quality... $        -- $   2,951,908 $   27,589 $   166,250 $   2,956,322
</TABLE>


The Bonds in the Insured Trusts are insured as follows: 


<TABLE>
<CAPTION>
                    Bonds insured           Bonds insured                                 
                    under AMBAC             under Financial                               
Trust               Indemnity               Guaranty                Preinsured    Total   
                    portfolio insurance     portfolio insurance     Bonds                 
                    ----------------------- ----------------------- ------------- --------
<S>                 <C>                     <C>                     <C>           <C>     
California IM-IT... --                      --                      100%          100%    
Colorado IM-IT..... 17%                     --                      83%           100%    
Florida IM-IT...... --                      --                      100%          100%    
</TABLE>


The breakdown of the Preinsured Bond Insurers is as follows: California IM-IT
Trust--AMBAC Indemnity 20%, Financial Guaranty 33% and MBIA 47%; Colorado
IM-IT Trust--AMBAC Indemnity 8%, MBIA 67% and FSA 8%; Florida IM-IT
Trust--AMBAC Indemnity 35%, Financial Guaranty 8% and MBIA 57%.

On the date of this Prospectus, the Estimated Current Return on the Securities
in the Colorado IM-IT was 5.02%,  based on the monthly plan of distribution
after payment of the insurance premium or premiums payable by such Trust,
while the Estimated Long-Term Return on such Trust was 5.03%. The Estimated
Current Return on an identical portfolio without the insurance obtained by the
above mentioned Trust would have been 5.04% based on the monthly plan of
distribution on such date, while the Estimated Long-Term Return on an
identical portfolio without the insurance obtained by the above mentioned
Trust would have been 5.05%.


The Sponsor may have entered into contracts which hedge interest rate
fluctuations on certain Bonds in certain Trusts. The cost of any such
contracts and the corresponding gain or loss is included in the Cost to
Sponsor. Securities marked by a double pound symbol (##) following the
maturity date have been purchased on a "when, as and if issued" or
"delayed delivery" basis. Interest on these Securities 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 as
follows: 




<TABLE>
<CAPTION>
                          Percent of                                            
                          Aggregate Principal    Range of Days Subsequent to    
Trust                     Amount                 First Settlement Date          
                          ---------------------- -------------------------------
<S>                       <C>                    <C>                            
California IM-IT.........                     --                              --
Colorado IM-IT...........                     --                              --
Florida IM-IT............                    16%                          6 days
South Carolina Quality...                     8%                          5 days
</TABLE>





On the Date of Deposit, the offering side evaluations of the Securities in the
California IM-IT, Colorado IM-IT, Florida IM-IT and South Carolina Quality
Trusts were higher than the bid side evaluations of such Securities by 0.75%,
0.75%, 0.74% and 0.75%, respectively, of the aggregate principal amounts of
such Securities.

"#" prior to the coupon rate indicates that such Bond was issued at an
original issue discount. The tax effect of Bonds issued at an original issue
discount is described in "Federal Tax Status" in Part II of this
Prospectus.


(6)This Bond has been purchased at a deep discount from the par value because
there is little or no stated interest thereon. Bonds which pay no interest are
normally described as "zero coupon" bonds. Over the life of bonds
purchased at a deep discount, the value of such bonds will increase such that
upon maturity the holders of such bonds will receive 100% of the principal
amount thereof. To the extent that zero coupon bonds are sold or called prior
to maturity, there is no guarantee that the value of the proceeds received
therefrom by the Trust will equal or exceed the par value that would have been
obtained at maturity of such zero coupon bonds. Approximately 1% and 3% of the
aggregate principal amount of the Securities in the California IM-IT Trust and
Florida IM-IT Trust, respectively, are "zero coupon" bonds. See "
Unitholder Explanations--Settlement of Bonds in the Trusts--Risk Factors" 
in Part II of this Prospectus for a discussion of zero coupon bonds.





REPORT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS

To the Board of Directors of Van Kampen American Capital Distributors, Inc.
and the Unitholders of Insured Municipals Income Trust and Investors' Quality
Tax-Exempt Trust, Multi-Series 291 (California IM-IT, Colorado IM-IT, Florida
IM-IT and South Carolina Quality Trusts):

We have audited the accompanying statements of condition and the related
portfolios of Insured Municipals Income Trust and Investors' Quality
Tax-Exempt Trust, Multi-Series 291 (California IM-IT, Colorado IM-IT, Florida
IM-IT and South Carolina Quality Trusts) as of May 22, 1997. The statements of
condition and portfolios 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 irrevocable letters of credit deposited to
purchase tax-exempt securities 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 Insured Municipals Income
Trust and Investors' Quality Tax-Exempt Trust, Multi-Series 291 (California
IM-IT, Colorado IM-IT, Florida IM-IT and South Carolina Quality Trusts) as of
May 22, 1997, in conformity with generally accepted accounting principles.


                                    GRANT THORNTON LLP

Chicago, Illinois
May 22, 1997

    
   
<TABLE>
INSURED MUNICIPALS INCOME TRUST and
INVESTORS' QUALITY TAX-EXEMPT TRUST, MULTI-SERIES 291
Statements of Condition
As of May 22, 1997
<CAPTION>
                                                                                                      South        
INVESTMENT IN SECURITIES                                    California    Colorado      Florida       Carolina     
                                                            IM-IT  Trust  IM-IT  Trust  IM-IT Trust   Quality Trust
                                                            ------------- ------------- ------------- -------------
<S>                                                         <C>           <C>           <C>           <C>          
Contracts to purchase tax-exempt securities <F1><F2><F3>... $   2,869,178 $   2,916,731 $   2,935,749 $   2,979,497
Accrued interest to the First Settlement Date <F1><F3>.....        41,324        38,431        23,461        45,221
                                                            ------------- ------------- ------------- -------------
Total...................................................... $   2,910,502 $   2,955,162 $   2,959,210 $   3,024,718
                                                            ============= ============= ============= =============
LIABILITY AND INTEREST OF UNITHOLDERS                                                                              
Liability--                                                                                                        
Accrued interest payable to Sponsor <F1><F3>............... $      41,324 $      38,431 $      23,461 $      45,221
Interest of Unitholders--                                                                                          
Cost to investors <F4>.....................................     3,017,000     3,067,000     3,087,000     3,133,000
Less: Gross underwriting commission <F4>...................       147,822       150,269       151,251       153,503
                                                            ------------- ------------- ------------- -------------
Net interest to Unitholders <F1><F3><F4>...................     2,869,178     2,916,731     2,935,749     2,979,497
                                                            ------------- ------------- ------------- -------------
Total...................................................... $   2,910,502 $   2,955,162 $   2,959,210 $   3,024,718
                                                            ============= ============= ============= =============
==========
<FN>
<F1>The aggregate value of the Securities listed under "Portfolio" for
each Trust herein, and their cost to such Trust are the same. The value of the
Securities is determined by Interactive Data Corporation on the bases set
forth under "Unitholder Explanations--Public Offering--Offering Price" 
in Part II of this Prospectus. The contracts to purchase tax-exempt Securities
are collateralized by irrevocable letters of credit which have been deposited
with the Trustee in and for the following amounts: 
</TABLE>

<TABLE>
<CAPTION>
                                              Principal     Offering      Accrued         
                                Amount of     Amount of     Price of      Interest to     
                                Letter of     Bonds Under   Bonds Under   Expected        
                                Credit        Contracts     Contracts     Delivery  Dates 
                                ------------- ------------- ------------- ----------------
<S>                             <C>           <C>           <C>           <C>             
California IM-IT Trust......... $   2,908,055 $   3,020,000 $   2,869,178 $         38,877
Colorado IM-IT Trust........... $   2,952,704 $   3,005,000 $   2,916,731 $         35,973
Florida IM-IT Trust............ $   2,958,581 $   3,085,000 $   2,935,749 $         22,832
South Carolina Quality Trust... $   3,022,549 $   3,090,000 $   2,979,497 $         43,052

    

<FN>
<F2>Insurance coverage providing for timely payment, when due, of all principal
and interest on the Bonds in the Insured Trusts has been obtained by such
Trusts, by a prior owner of such Bonds, by the Sponsor prior to the deposit of
such Bonds or by the issuers of such Bonds. Such insurance does not guarantee
the market value of the Bonds or the value of the Units. The insurance
obtained by the Insured Trusts is effective only while Bonds thus insured are
held in such Trusts. Neither the bid nor offering prices of the underlying
Bonds or of the Units, absent situations in which bonds are in default in
payment of principal or interest or in significant risk of such default,
include value, if any, attributable to the insurance obtained by such Trusts.


<F3>The Trustee will advance to the Trust the amount of net interest accrued to
May 28, 1997, the First Settlement Date, for distribution to the Sponsor as
the Unitholder of record as of the First Settlement Date.

<F4>The aggregate public offering price (exclusive of interest) and the aggregate
sales charge are computed on the bases set forth under "Unitholder
Explanations--Public Offering--Offering Price" and "Trust
Administration--General--Sponsor and Underwriter Compensation" in Part II
of this Prospectus and assume all single transactions involve less than 100
Units. For single transactions involving 100 or more Units, the sales charge
is reduced (see "Unitholder Explanations--Public Offering--General" in
Part II of this Prospectus) resulting in an equal reduction in both the Cost
to investors and the Gross underwriting commission while the Net interest to
Unitholders remains unchanged.
</TABLE>

EQUIVALENT TAXABLE ESTIMATED CURRENT RETURN TABLES

- --------------------------------------------------------------------------
As of the date of this 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 1997. 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 $121,200. 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 the taxpayer's itemized deductions. For example, the
limitation on itemized deductions will not cause a taxpayer to lose more than
80% of his allowable itemized deductions, with certain exceptions. See "
Federal Tax Status" in Part II of this Prospectus for a more detailed
discussion of recent Federal tax legislation, including a discussion of
provisions affecting corporations.


CALIFORNIA

<TABLE>
<CAPTION>
      Taxable Income ($1,000's)                                        Tax-Exempt Estimated Current Return 
- ---------------------------------------          -------------------------------------------------------------------------
        Single               Joint       Tax         5%          5 1/2%   6%        6 1/2%      7%        7 1/2%      8%
        Return              Return      Bracket              Equivalent Taxable Estimated Current Return
- --------------------------------------- -------  -------------------------------------------------------------------------
<S>                 <C>                 <C>        <C>       <C>        <C>         <C>       <C>          <C>       <C>      
$         0 - 24.65 $        0 - 41.20     20.1%    6.26%        6.88%    7.51%        8.14%    8.76%        9.39%   10.01%
      24.65 - 59.75       41.20 - 99.60    34.7     7.66         8.42     9.19         9.95    10.72        11.49    12.25 
     59.75 - 124.65      99.60 - 151.75    37.4     7.99         8.79     9.58        10.38    11.18        11.98    12.78 
    124.65 - 271.05     151.75 - 271.05      42     8.62         9.48    10.34        11.21    12.07        12.93    13.79 
        Over 271.05         Over 271.05    45.2     9.12        10.04    10.95        11.86    12.77        13.69    14.60 
</TABLE>


- ----------
* The State tax brackets are those for 1996. The 1997 brackets will be
adjusted to take into account changes in the California Consumer Price Index.
These adjustments have not yet been released.

COLORADO

<TABLE>
<CAPTION>
      Taxable Income ($1,000's)                                        Tax-Exempt Estimated Current Return 
- ---------------------------------------          -------------------------------------------------------------------------
        Single               Joint       Tax         5%          5 1/2%   6%        6 1/2%      7%        7 1/2%      8%
        Return              Return      Bracket              Equivalent Taxable Estimated Current Return
- --------------------------------------- -------  -------------------------------------------------------------------------
<S>                 <C>                 <C>        <C>       <C>        <C>         <C>       <C>          <C>       <C>   
$         0 - 24.65 $        0 - 41.20     19.3%    6.20%        6.82%    7.43%        8.05%    8.67%        9.29%    9.91%
      24.65 - 59.75       41.20 - 99.60    31.6     7.31         8.04     8.77         9.50    10.23        10.96    11.70 
     59.75 - 124.65      99.60 - 151.75    34.5     7.63         8.40     9.16         9.92    10.69        11.45    12.21 
    124.65 - 271.05     151.75 - 271.05    39.2     8.22         9.05     9.87        10.69    11.51        12.34    13.16 
        Over 271.05         Over 271.05    42.6     8.71         9.58    10.45        11.32    12.20        13.07    13.94 
</TABLE>


FLORIDA

<TABLE>
<CAPTION>
      Taxable Income ($1,000's)                                        Tax-Exempt Estimated Current Return 
- ---------------------------------------          -------------------------------------------------------------------------
        Single               Joint       Tax         5%          5 1/2%   6%        6 1/2%      7%        7 1/2%      8%
        Return              Return      Bracket              Equivalent Taxable Estimated Current Return
- --------------------------------------- -------  -------------------------------------------------------------------------
<S>                 <C>                 <C>        <C>       <C>        <C>         <C>       <C>          <C>       <C>   
$         0 - 24.65 $        0 - 41.20       15%    5.88%        6.47%   7.06%        7.65%    8.24%        8.82%    9.41%
      24.65 - 59.75       41.20 - 99.60      28     6.94         7.64    8.33         9.03     9.72        10.42    11.11 
     59.75 - 124.65      99.60 - 151.75      31     7.25         7.97    8.70         9.42    10.14        10.87    11.59 
    124.65 - 271.05     151.75 - 271.05      36     7.81         8.59    9.38        10.16    10.94        11.72    12.50 
        Over 271.05         Over 271.05    39.6     8.28         9.11    9.93        10.76    11.59        12.42    13.25 
</TABLE>

- ----------
* The State of Florida does not impose an income tax on individuals. However,
Florida does impose an intangible personal property tax, which is not included
in this table, because it is generally based on property value rather than
income.


SOUTH CAROLINA

<TABLE>
<CAPTION>
      Taxable Income ($1,000's)                                        Tax-Exempt Estimated Current Return 
- ---------------------------------------          -------------------------------------------------------------------------
        Single               Joint       Tax         5%          5 1/2%   6%        6 1/2%      7%        7 1/2%      8%
        Return              Return      Bracket              Equivalent Taxable Estimated Current Return
- --------------------------------------- -------  -------------------------------------------------------------------------
<S>                 <C>                 <C>        <C>       <C>        <C>         <C>       <C>          <C>       <C>   
$         0 - 24.65 $        0 - 41.20       21%    6.33%        6.96%    7.59%        8.23%    8.86%        9.49%   10.13%
      24.65 - 59.75       41.20 - 99.60      33     7.46         8.21     8.96         9.70    10.45        11.19    11.94 
     59.75 - 124.65      99.60 - 151.75    35.8     7.79         8.57     9.35        10.12    10.90        11.68    12.46 
    124.65 - 271.05     151.75 - 271.05    40.5     8.40         9.24    10.08        10.92    11.76        12.61    13.45 
        Over 271.05         Over 271.05    43.8     8.90         9.79    10.68        11.57    12.46        13.35    14.23 
</TABLE>


- ----------
*The State tax brackets are those for 1996. The 1997 brackets may be adjusted
for inflation.



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
U.S. Government and bank CDs and money market accounts are insured by an
agency of the federal government. Money market accounts and money market funds
provide stability of principal, but pay interest at rates that vary with the
condition of the short-term debt market. The investment characteristics of the
Trusts are described more fully elsewhere in this Prospectus.

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 Securities 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.



California IM-IT Trust
Monthly 

<TABLE>
<CAPTION>
                                         Estimated       Estimated       Estimated      
Distribution Dates                       Interest        Principal       Total          
(Each Month)                             Distribution    Distribution    Distribution   
- ---------------------------------------- --------------- --------------- ---------------
<S>         <C>     <C>          <C>     <C>             <C>             <C>            
June           1997                            $    1.69                       $    1.69
July           1997 - July          2008            4.22                            4.22
August         2008                                 3.88     $    243.61          247.49
September      2008                                 2.96           33.15           36.11
October        2008 - November      2019            2.93                            2.93
December       2019                                 2.40          165.73          168.13
January        2020 - July          2021            2.30                            2.30
August         2021                                 2.11          135.89          138.00
September      2021                                 1.68            8.29            9.97
October        2021 - October       2022            1.68                            1.68
November       2022                                 1.57           82.86           84.43
December       2022 - August        2023            1.32                            1.32
September      2023                                 1.12          165.73          166.85
October        2023 - November      2026             .65                             .65
December       2026                                  .43          165.73          166.16
</TABLE>


California IM-IT Trust  (continued)
Semi-annual 

<TABLE>
<CAPTION>
Distribution Dates                   Estimated       Estimated       Estimated      
(Each January and July               Interest        Principal       Total          
Unless Otherwise Indicated)          Distribution    Distribution    Distribution   
- ------------------------------------ --------------- --------------- ---------------
<S>         <C>     <C>      <C>     <C>             <C>             <C>            
July           1997                        $    5.97                       $    5.97
January        1998 - July      2008           25.60                           25.60
August         2008                                      $    243.61          243.61
September      2008                                            33.15           33.15
January        2009                            18.77                           18.77
July           2009 - July      2019           17.79                           17.79
December       2019                                           165.73          165.73
January        2020                            16.62                           16.62
July           2020 - July      2021           13.96                           13.96
August         2021                                           135.89          135.89
September      2021                                             8.29            8.29
January        2022                            10.68                           10.68
July           2022                            10.25                           10.25
November       2022                                            82.86           82.86
January        2023                             9.39                            9.39
July           2023                             8.02                            8.02
September      2023                                           165.73          165.73
January        2024                             5.13                            5.13
July           2024 - July      2026            3.98                            3.98
December       2026                             3.10          165.73          168.83
</TABLE>


Colorado IM-IT Trust
<TABLE>
Monthly
<CAPTION>
                                         Estimated       Estimated       Estimated      
Distribution Dates                       Interest        Principal       Total          
(Each Month)                             Distribution    Distribution    Distribution   
- ---------------------------------------- --------------- --------------- ---------------
<S>        <C>     <C>           <C>     <C>             <C>             <C>            
June          1997                             $    1.67                       $    1.67
July          1997 - May            2005            4.18                            4.18
June          2005                                  4.11      $    52.16           56.27
July          2005 - November       2006            3.94                            3.94
December      2006                                  3.32          163.03          166.35
January       2007 - November       2009            3.20                            3.20
December      2009                                  3.09           81.51           84.60
January       2010 - November       2017            2.83                            2.83
December      2017                                  2.73           81.51           84.24
January       2018 - November       2021            2.50                            2.50
December      2021                                  2.39           81.52           83.91
January       2022                                  2.03           96.18           98.21
February      2022 - June           2022            1.73                            1.73
July          2022                                  1.53          163.03          164.56
August        2022 - November       2025            1.07                            1.07
December      2025                                   .41          179.33          179.74
January       2026 - September      2026             .28                             .28
October       2026                                   .17           81.51           81.68
</TABLE>


<TABLE>
Semi-annual
<CAPTION>
Distribution Dates                     Estimated       Estimated       Estimated      
(Each January and July                 Interest        Principal       Total          
Unless Otherwise Indicated)            Distribution    Distribution    Distribution   
- -------------------------------------- --------------- --------------- ---------------
<S>        <C>     <C>         <C>     <C>             <C>             <C>            
July          1997                           $    5.91                       $    5.91
January       1998 - January      2005           25.35                           25.35
June          2005                                          $    52.16           52.16
July          2005                               25.03                           25.03
January       2006 - July         2006           23.91                           23.91
December      2006                                              163.03          163.03
January       2007                               22.53                           22.53
July          2007 - July         2009           19.41                           19.41
December      2009                                               81.51           81.51
January       2010                               18.92                           18.92
July          2010 - July         2017           17.18                           17.18
December      2017                                               81.51           81.51
January       2018                               16.75                           16.75
July          2018 - July         2021           15.19                           15.19
December      2021                                               81.52           81.52
January       2022                               14.61           96.18          110.79
July          2022                               10.34          163.03          173.37
January       2023 - July         2025            6.56                            6.56
December      2025                                              179.33          179.33
January       2026                                5.09                            5.09
July          2026                                1.74                            1.74
October       2026                                 .76           81.51           82.27
</TABLE>


Colorado IM-IT Trust   (continued)
Florida IM-IT Trust
<TABLE>
Monthly
<CAPTION>
                                          Estimated       Estimated       Estimated      
Distribution Dates                        Interest        Principal       Total          
(Each Month)                              Distribution    Distribution    Distribution   
- ----------------------------------------- --------------- --------------- ---------------
<S>         <C>     <C>           <C>     <C>             <C>             <C>            
June           1997                             $    1.68                       $    1.68
July           1997 - July           2007            4.20                            4.20
August         2007                                  3.98     $    161.96          165.94
September      2007 - September      2009            3.46                            3.46
October        2009                                  3.23          161.97          165.20
November       2009 - March          2020            2.70                            2.70
April          2020                                  2.70           27.54           30.24
May            2020 - May            2021            2.70                            2.70
June           2021                                  2.13          161.97          164.10
July           2021 - July           2022            2.02                            2.02
August         2022                                  1.91           80.98           82.89
September      2022 - September      2025            1.67                            1.67
October        2025                                  1.47          161.97          163.44
November       2025                                  1.00                            1.00
December       2025                                   .72           80.99           81.71
January        2026 - September      2027             .66                             .66
October        2027                                   .55           80.98           81.53
November       2027 - August         2028             .30                             .30
September      2028                                   .19           80.99           81.18
</TABLE>

Florida IM-IT Trust  (continued)

<TABLE>
Semi-annual
<CAPTION>
Distribution Dates                      Estimated       Estimated       Estimated      
(Each January and July                  Interest        Principal       Total          
Unless Otherwise Indicated)             Distribution    Distribution    Distribution   
- --------------------------------------- --------------- --------------- ---------------
<S>         <C>     <C>         <C>     <C>             <C>             <C>            
July           1997                           $    5.95                       $    5.95
January        1998 - July         2007           25.50                           25.50
August         2007                                         $    161.96          161.96
January        2008                               21.51                           21.51
July           2008 - July         2009           20.98                           20.98
October        2009                                              161.97          161.97
January        2010                               18.48                           18.48
July           2010 - January      2020           16.43                           16.43
April          2020                                               27.54           27.54
July           2020 - January      2021           16.43                           16.43
June           2021                                              161.97          161.97
July           2021                               15.17                           15.17
January        2022 - July         2022           12.29                           12.29
August         2022                                               80.98           80.98
January        2023                               10.41                           10.41
July           2023 - July         2025           10.17                           10.17
October        2025                                              161.97          161.97
December       2025                                               80.99           80.99
January        2026                                7.32                            7.32
July           2026 - July         2027            4.06                            4.06
October        2027                                               80.98           80.98
January        2028                                2.86                            2.86
July           2028                                1.88                            1.88
September      2028                                 .51           80.99           81.50
</TABLE>


   
South Carolina Quality Trust
Monthly

<TABLE>
<CAPTION>
                                        Estimated       Estimated       Estimated      
Distribution Dates                      Interest        Principal       Total          
(Each Month)                            Distribution    Distribution    Distribution   
- --------------------------------------- --------------- --------------- ---------------
<S>        <C>     <C>          <C>     <C>             <C>             <C>            
June          1997                            $    1.68                       $    1.68
July          1997 - April         2020            4.22                            4.22
May           2020                                 4.11      $    79.79           83.90
June          2020 - November      2020            3.87                            3.87
December      2020                                 3.66          159.59          163.25
January       2021                                 2.96          159.59          162.55
February      2021 - January       2022            2.50                            2.50
February      2022                                 2.44           43.09           45.53
March         2022 - April         2023            2.31                            2.31
May           2023                                 2.10          161.19          163.29
June          2023 - December      2024            1.63                            1.63
January       2025                                 1.52           79.80           81.32
February      2025 - April         2027            1.28                            1.28
May           2027                                  .69          159.59          160.28
June          2027                                  .38          143.63          144.01
</TABLE>




Semi-annual

<TABLE>
<CAPTION>
Distribution Dates                      Estimated       Estimated       Estimated      
(Each May and November                  Interest        Principal       Total          
Unless Otherwise Indicated)             Distribution    Distribution    Distribution   
- --------------------------------------- --------------- --------------- ---------------
<S>        <C>     <C>          <C>     <C>             <C>             <C>            
November      1997                           $    23.02                      $    23.02
May           1998 - November      2019           25.57                           25.57
May           2020                                25.46      $    79.79          105.25
November      2020                                23.47                           23.47
December      2020                                               159.59          159.59
January       2021                                               159.59          159.59
May           2021                                16.82                           16.82
November      2021                                15.19                           15.19
February      2022                                                43.09           43.09
May           2022                                14.55                           14.55
November      2022                                14.03                           14.03
May           2023                                13.82          161.19          175.01
November      2023 - November      2024            9.90                            9.90
January       2025                                                79.80           79.80
May           2025                                 8.39                            8.39
November      2025 - November      2026            7.80                            7.80
May           2027                                 7.20          159.59          166.79
June          2027                                  .39          143.63          144.02
</TABLE>
    



UNDERWRITING

- --------------------------------------------------------------------------
The Underwriters named below have severally purchased Units in the following
respective amounts from the Sponsor. For additional information regarding the
Underwriters, including information relating to compensation and benefits
received by the Underwriters, see "Unitholder
Explanations--Underwriting" in Part II of this Prospectus. 

 

<TABLE>
<CAPTION>
                                                                                                                 California 
Name                                        Address                                                       IM-IT Trust Units
                                                                                                          -----------------
<S>                                        <C>                                                            <C>              
Van Kampen American Capital Dist., Inc.    One Parkview Plaza, Oakbrook Terrace, Illinois 60181                      2,117 
Dean Witter Reynolds, Incorporated         2 World Trade Center, 59th Floor, New York, New York 10048                  250 
A.G. Edwards & Sons, Inc.                  One North Jefferson Avenue, St. Louis, Missouri 63103                       250 
Crowell, Weedon & Company                  One Wilshire Boulevard, Los Angeles, California 90017                       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 
Prudential Securities Inc.                 1 New York Plaza, 14th Floor, New York, New York 10292-2014                 100 
                                                                                                                     3,017 
                                                                                                          =================
</TABLE>

<TABLE>
<CAPTION>
                                                                                                                           Colorado
                                                                                                                              IM-IT
                                                                                                                              Trust
Name                                       Address                                                                            Units
                                                                                                                          ---------
<S>                                        <C>                                                                            <C>      
Van Kampen American Capital Dist., Inc.    One Parkview Plaza, Oakbrook Terrace, Illinois 60181                              2,467 
Dain Bosworth Incorporated                 Dain Bosworth Plaza, 60 South Sixth Street, P15C, Minneapolis, Minnesota 55402      100 
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 
Fidelity Capital Markets                   164 Northern Avenue, Boston, Massachusetts 02210                                    100 
Gruntal & Co., Incorporated                14 Wall Street, New York, New York 10005                                            100 
Prudential Securities Inc.                 1 New York Plaza, 14th Floor, New York, New York 10292-2014                         100 
                                                                                                                             3,067 
                                                                                                                          =========
</TABLE>

<TABLE>
<CAPTION>
                                                                                                             Florida  IM-IT
Name                                       Address                                                              Trust Units
                                                                                                          -----------------
<S>                                        <C>                                                            <C>              
Van Kampen American Capital Dist., Inc.    One Parkview Plaza, Oakbrook Terrace, Illinois 60181                      2,687 
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 
Prudential Securities Inc.                 1 New York Plaza, 14th Floor, New York, New York 10292-2014                 100 
                                                                                                                     3,087 
                                                                                                          =================
</TABLE>


<TABLE>
<CAPTION>
                                                                                                           South  Carolina 
                                                                                                             Quality Trust
Name                                       Address                                                                   Units
                                                                                                          -----------------
<S>                                        <C>                                                            <C>              
Van Kampen American Capital Dist., Inc.    One Parkview Plaza, Oakbrook Terrace, Illinois 60181                      2,633 
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 
Edward D. Jones & Co.                      201 Progress Parkway, Maryland Heights, Missouri  63043                     100 
Prudential Securities Inc.                 1 New York Plaza, 14th Floor, New York, New York 10292-2014                 100 
Smith Barney Inc.                          388 Greenwich Street, 23rd Floor, New York, New York 10013                  100 
                                                                                                                     3,133 
                                                                                                          =================
</TABLE>




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.



<TABLE>
<CAPTION>
Title                                                Page   
<S>                                                  <C>    
SUMMARY OF ESSENTIAL FINANCIAL INFORMATION                 2
CALIFORNIA IM-IT TRUST                                     3
COLORADO IM-IT TRUST                                      13
FLORIDA IM-IT TRUST                                       19
SOUTH CAROLINA QUALITY TRUST                              26
OTHER MATTERS                                             34
Report of Independent Certified Public Accountants        34
Statements of Condition                                   35
Equivalent Taxable Estimated Current Return Tables        36
Estimated Cash Flows to Unitholders                       38
Underwriting                                              45
</TABLE>



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. 

PROSPECTUS
PART I


May 22, 1997

Insured Municipals Income Trust
and
Investors' Quality Tax-Exempt Trust,
Multi-Series 291

California IM-IT 166
Colorado IM-IT 84
Florida IM-IT 115
South Carolina Quality 86



A Wealth of Knowledge A Knowledge of Wealth  

VAN KAMPEN AMERICAN CAPITAL

One Parkview Plaza
Oakbrook Terrace, Illinois 60181

2800 Post Oak Boulevard
Houston, Texas 77056

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



February 1997

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

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

In the opinion of counsel, interest to the Fund and to Unitholders, with
certain exceptions, is excludable under existing law from gross income for
Federal income taxes. In addition, the interest income of each State Trust is,
in the opinion of counsel, exempt to the extent indicated from state and local
taxes, when held by residents of the state where the issuers of Bonds in such
Trust are located. Capital gains, if any, are subject to Federal tax.

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 Part I of this
Prospectus. Each Trust initially consists of delivery statements relating to
contracts to purchase securities and, thereafter, will consist of such
securities as may continue to be held (the "Bonds" or "
Securities" ). Such Securities are interest-bearing obligations issued by
or on behalf of municipalities and other governmental authorities, the
interest on which is, in the opinion of recognized bond counsel to the issuing
governmental authority, exempt from all Federal income taxes under existing
law. In addition, the interest income of each State Trust is, in the opinion
of counsel, exempt to the extent indicated from state and local taxes, when
held by residents of the state where the issuers of Bonds in such Trust are
located. The Bonds in an IM-IT Discount Trust were acquired at prices which
result in an IM-IT Discount Trust portfolio, as a whole, being purchased at a
deep discount from the aggregate par value of such Bonds. Gains based upon the
difference, if any, between the value of the Bonds at maturity, redemption or
sale and their purchase price at a discount (plus earned original issue
discount) will constitute taxable ordinary income with respect to a Unitholder
who is not a dealer with respect to his Units. Except in specific instances as
noted in Part I of this Prospectus, the information contained in this Part II
shall apply to each Trust in its entirety.

"AAA" Rating for the Insured Trusts Only. Insurance guaranteeing the
payments of principal and interest, when due, on the Securities in the
portfolio of each Insured Trust has been obtained from a municipal bond
insurance company either by such Trust or by the issuer of the Bonds involved,
by a prior owner of the Bonds or by the Sponsor prior to the deposit of such
Bonds in an Insured Trust. See "Unitholder Explanations--Insurance on the
Bonds in the Insured Trusts" . Insurance obtained by an Insured Trust
applies only while Bonds are retained in such Trust while insurance obtained
on Preinsured Bonds is effective so long as such Bonds are outstanding. The
Trustee, upon the sale of a Bond insured under an insurance policy obtained by
an Insured Trust, has a right to obtain from the insurer involved permanent
insurance for such Bond upon the payment of a single predetermined insurance
premium and any expenses related thereto from the proceeds of the sale of such
Bond. Insurance relates only to the Bonds in a Trust and not to the Units
offered hereby 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" ). Standard & Poor's has indicated that this rating is not a
recommendation to buy, hold or sell Units nor does it take into account the
extent to which expenses of each Insured Trust or sales by each Insured Trust
of Bonds for less than the purchase price paid by such Trust will reduce
payments to Unitholders of the interest and principal required to be paid on
such Bonds. See "Unitholder Explanations--Insurance on the Bonds in the
Insured Trusts" . No representation is made as to any insurer's ability to
meet its commitments.

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 the Units of each Trust
during the initial offering period includes the aggregate offering price of
the Securities in such Trust's portfolio, an applicable sales charge, cash, if
any, in the Principal Account held or owned by such Trust, and accrued
interest, if any. After the initial public offering period, the secondary
market Public Offering Price of each Trust will include the aggregate bid
price of the Securities in such Trust, an applicable sales charge, cash, if
any, in the Principal Account held or owned by such Trust, and accrued
interest, if any. Sales charges for the Trusts in the initial market,
expressed both as a percentage of the Public Offering Price and as a
percentage of the aggregate offering price of the Securities, are set forth
under "Unitholder Explanations--Public Offering--General." For sales
charges in the secondary market, see "Unitholder Explanations--Public
Offering--General" . If the Securities in each Trust were available for
direct purchase by investors, the purchase price of the Securities would not
include the sales charge included in the Public Offering Price of the Units.
During the initial offering period, the sales charge is reduced on a graduated
scale for sales involving at least 100 Units. If Units were available for
purchase at the close of business on the day before the Date of Deposit
(except for an IM-IT, an IM-IT Discount or a Pennsylvania IM-IT Trust as of
8:00 A.M. Central Time on the Date of Deposit), the Public Offering Price per
Unit would have been that amount set forth in the "Summary of Essential
Financial Information" in Part I of this Prospectus for each Trust. The
minimum purchase requirement is one Unit except for certain transactions
described under "Trust Administration--General--Unit Distribution" .

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

Estimated Current Return and Estimated Long-Term Return. The annual Estimated
Current Returns and Estimated Long-Term Returns to Unitholders as of the close
of business on the day before the Date of Deposit (except for an IM-IT, an
IM-IT Discount or a Pennsylvania IM-IT Trust as of 8:00 A.M. Central Time on
the Date of Deposit) under the monthly and semi-annual distribution plans were
as set forth under "Per Unit Information" for each Trust in Part I of
this Prospectus. The methods of calculating Estimated Current Return and
Estimated Long-Term Return are set forth under "Unitholder
Explanations--Estimated Current Returns and Estimated Long-Term Returns." 

Objectives of The Fund. The objectives of the Fund are income exempt from
Federal income tax and, in the case of a State Trust, Federal and state income
tax (if any) and conservation of capital through an investment in diversified
portfolios of Federal and state tax-exempt obligations. There is, of course,
no guarantee that the Fund will achieve its objectives. The Fund may be an
appropriate investment vehicle for investors who desire to participate in a
portfolio of tax-exempt fixed income securities with greater diversification
than they might be able to acquire individually. In addition, securities of
the type deposited in the Fund are often not available in small amounts.

Distribution Options. Purchasers of Units who desire to receive distributions
on a monthly or semi-annual basis may elect to do so at the time of settlement
during the initial public offering period. See "Unitholder
Explanations--Settlement of Bonds in the Trusts--Change of Distribution
Option" . The plan of distribution selected by such purchasers will remain
in effect until changed. Those indicating no choice will be deemed to have
chosen the monthly distribution plan. Record dates for monthly distributions
will be the tenth day of each month and record dates for semi-annual
distributions will be the tenth day of the months indicated under "Per
Unit Information" for the applicable Trust in Part I of this Prospectus.
Distributions will be made on the twenty-fifth day of the month subsequent to
the respective record dates.

Market for Units. Although not obligated to do so, the Sponsor, Van Kampen
American Capital Distributors, Inc., intends to, and certain of the other
Underwriters may, maintain a secondary market for the Units at prices based
upon the aggregate bid prices of the Securities in the respective Trusts plus
interest accrued to the date of settlement; however, during the initial
offering period such prices will be based upon the aggregate offering prices
of the Securities plus interest accrued to the date of settlement. If such a
market is not maintained and no other over-the-counter market is available, a
Unitholder will be able to dispose of his Units only through redemption at
prices based upon the bid prices of the underlying Securities plus interest
accrued to the date of settlement (see "Unitholder Explanations--Public
Offering--Redemption of Units" and "Unitholder Explanations--Public
Offering--Market for Units" ).

Reinvestment Option. Unitholders of any Van Kampen American Capital-sponsored
unit investment trust may utilize their redemption or termination proceeds to
purchase units of any other Van Kampen American Capital trust in the initial
offering period accepting rollover investments subject to a reduced sales
charge to the extent stated in the related prospectus (which may be deferred
in certain cases).

Unitholders have the opportunity to have their distributions reinvested into
an open-end, management investment company as described herein. See "
Unitholder Explanations--Public Offering--Reinvestment Option" .

Risk Factors. An investment in the Trusts should be made with an understanding
of the risks associated therewith, including, among other factors, the
inability of the issuer or an insurer 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 "Unitholder Explanations--Settlement of
Bonds in the Trusts--Risk Factors" .

SETTLEMENT OF BONDS IN 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 Part I of this Prospectus. 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 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 initially consists of separate portfolios of delivery statements
relating to contracts to purchase 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 under existing law. All issuers of Securities in
a State Trust are located in the state for which such Trust is named or in
United States territories or possessions and their public authorities;
consequently, in the opinion of recognized bond counsel to such State issuers,
the related interest earned on such Securities is exempt to the extent
indicated from state and local taxes of such State. With the exception of the
New York and Pennsylvania Trusts, Units of such Trusts may be purchased only
by residents of the State for which such Trust is named. Units of a New York
Trust may be purchased by residents of New York, Connecticut, Florida and
Massachusetts. Units of a Pennsylvania Trust may be purchased by residents of
Pennsylvania, Connecticut, Florida, Maryland, New York, Ohio and West
Virginia. Offerees in the states of Illinois, Indiana, Virginia and Washington
may only purchase Units of a Trust named for their respective state of
residence or an IM-IT, IM-IT Limited Maturity, IM-IT Intermediate, IM-IT Short
Intermediate, IM-IT Discount Series or a National Quality Trust. On the Date
of Deposit, the Sponsor deposited with the Trustee the aggregate principal
amount of Securities in each Trust as indicated under "General
Information--Principal Amount (Par Value) of Securities in Trust" in the
"Summary of Essential Financial Information" in Part I of this
Prospectus. Such Securities initially consist of delivery statements relating
to contracts for the purchase of certain interest-bearing obligations and
cash, cash equivalents and/or irrevocable letters of credit issued by a
financial institution in the amount required for such purchases. Thereafter,
the Trustee, in exchange for the Securities so deposited, delivered to the
Sponsor the certificates evidencing the ownership of the number of Units in
each Trust as indicated under "Summary of Essential Financial
Information" in Part I of this Prospectus. Unless otherwise terminated as
provided herein, the Trust Agreement for any IM-IT, IM-IT Discount, State
(other than a State Intermediate Laddered Maturity Trust) or National Quality
Trust will terminate at the end of the calendar year prior to the fiftieth
anniversary of its execution, and the Trust Agreement for any IM-IT Limited
Maturity Trust, IM-IT Intermediate Trust, State Intermediate Laddered Maturity
Trust or IM-IT Short Intermediate Trust will terminate at the end of the
calendar year prior to the twentieth anniversary of its execution.

The portfolio of any IM-IT, IM-IT Discount, State (other than a State
Intermediate Laddered Maturity Trust) 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
dollar-weighted average maturity of the Bonds in any IM-IT Intermediate Trust,
State Intermediate Laddered Maturity Trust and IM-IT Short Intermediate Trust
is less than or equal to 10 years, 10 years and 5 years, respectively.

Substantially all of the Bonds in an IM-IT Discount Trust are obligations
which were originally issued at a discount, including "zero coupon" 
bonds. See "Federal Tax Status" for a discussion of the tax
consequences of original issue discount.

The portfolio of any State Intermediate Laddered Maturity Trust is structured
so that approximately 20% of the Bonds contained in such portfolio will mature
each year, commencing 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 a
State Intermediate Laddered Maturity Trust. However, the flexibility provided
by the return of principal may at the same time eliminate a Unitholder's
ability to reinvest the amount returned at a rate as high as the implicit
yield on the obligations which matured.

Each Unit initially offered represents the fractional undivided interest in
the principal and net income of a Trust indicated under "Summary of
Essential Financial Information" in Part I of this Prospectus. To the
extent that any Units are redeemed by the Trustee, the fractional undivided
interest in a Trust represented by each unredeemed Unit will increase,
although the actual interest in such Trust represented by such fraction will
remain unchanged. Units will remain outstanding until redeemed upon tender to
the Trustee by Unitholders, which may include the Sponsor or the Underwriters,
or until the termination of the Trust Agreement.

Objectives and Securities 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 obligations contained in such portfolio
will mature each year commencing in approximately the fifth year of the Trust.
There is, of course, no guarantee that the Trusts will achieve their
respective objectives. The Fund may be an appropriate investment vehicle for
investors who desire to participate in a portfolio of tax-exempt fixed income
securities with greater diversification than they might be able to acquire
individually. In addition, securities of the type deposited in the Fund are
often not available in small amounts.

Insurance guaranteeing the timely payment, when due, of all principal and
interest on the Bonds in each Insured Trust has been obtained by such Trust
from either AMBAC Indemnity Corporation ("AMBAC Indemnity" ), Financial
Guaranty Insurance Company ("Financial Guaranty" or "FGIC" ) or
a combination thereof (collectively, the "Portfolio Insurers" ), or by
the issuer of such Bonds, by a prior owner of such Bonds, or by the Sponsor
prior to the deposit of such Bonds in such Trust from certain of the "
Preinsured Bond Insurers" described herein. Insurance obtained by an
Insured Trust is effective only while the Bonds thus insured are held in such
Trust. For information relating to insurance on the bonds, see "Unitholder
Explanations--Insurance on the Bonds in the Insured Trusts." 

In selecting Securities for the Trusts, the following factors, among others,
were considered by the Sponsor: (a) either the Standard & Poor's rating of the
Securities was in no case less than "BBB-" in the case of the Insured
Trusts and "A-" in the case of the Quality Trusts, or the Moody's
Investors Service, Inc. ("Moody's" ) rating of the Securities was in no
case less than "Baa" in the case of the Insured Trusts and "A" 
in the case of the Quality Trusts, including provisional or conditional
ratings, respectively, or, if not rated, the Securities had, in the opinion of
the Sponsor, credit characteristics sufficiently similar to the credit
characteristics of interest-bearing tax-exempt obligations that were so rated
as to be acceptable for acquisition by the Fund (see "Description of
Ratings" ), (b) the prices of the Securities relative to other bonds of
comparable quality and maturity, (c) the diversification of Securities as to
purpose of issue and location of issuer and (d) with respect to the Insured
Trusts, the availability and cost of insurance for the prompt payment of
principal and interest, when due, on the Securities. Subsequent to the Date of
Deposit, a Security 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 such Security from the portfolio of a Trust but may be
considered in the Sponsor's determination as to whether or not to direct the
Trustee to dispose of the Security (see "Trust Administration--Fund
Administration and Expenses--Portfolio Administration" ).

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. See "
General" for each Trust in Part I of this Prospectus. 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 in the
portfolio 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 the 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 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 of the Bonds may be "zero coupon" bonds. See footnote (6) in
"Notes to Portfolios" in Part I of this Prospectus. 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 footnote (5) in "
Notes to Portfolios" in Part I of this Prospectus. The delivery of any
such Securities may be delayed or may not occur. Interest on these Securities
begins accruing to the benefit of Unitholders on their respective dates of
delivery. To the extent any Securities are actually delivered to the Fund
after their respective expected dates of delivery, Unitholders who purchase
their Units prior to the date such Securities 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 Securities during the interval
between their purchase of Units and the actual delivery of such Securities. As
a result of any such adjustment, the Estimated Current Returns during the
first year would be slightly lower than those stated herein 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 under "Per Unit
Information" for the applicable Trust in Part I of this Prospectus.
Unitholders will be "at risk" with respect to all Securities in the
portfolios including "when, as and if issued" and "delayed
delivery" Securities (i.e., may derive either gain or loss from
fluctuations in the evaluation of such Securities) from the date they commit
for Units. For a discussion of the Sponsor's obligations in the event of the
failure of any contract for the purchase of any of the Securities and limited
right to substitute other tax-exempt bonds to replace any failed contract, see
"Replacement Bonds" below.

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 "Portfolio" for each Trust and footnote (3)
in the "Notes to Portfolios" in Part I of this Prospectus. 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 Securities 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 Securities 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
Securities 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 Security on the date of issuance to the effect that such Securities
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 Securities.

Replacement Bonds. Because certain of the Securities in the Fund may from time
to time under certain circumstances be sold or redeemed or will mature in
accordance with their terms and because the proceeds from such events will be
distributed to Unitholders and will not be reinvested, no assurance can be
given that any Trust will retain for any length of time its present size and
composition. Neither the Sponsor nor the Trustee shall be liable in any way
for any default, failure or defect in any Security. In the event of a failure
to deliver any Security that has been purchased for the Fund under a contract,
including those Securities purchased on a "when, as and if issued" 
basis ("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 corpus of the Fund.

The 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 (i) must be tax-exempt bonds issued by
states or territories of the United States or political subdivisions thereof
and, in the case of replacement of bonds in a State Trust, shall have the
benefit of an exemption from state taxation of interest to an extent equal to
or greater than that of the bonds they replace, (ii) must have a fixed
maturity date of at least 10 years in the case of an IM-IT, IM-IT Discount,
State (other than a State Intermediate Laddered Maturity Trust) or National
Quality Trust or, in the case of an IM-IT Limited Maturity, IM-IT
Intermediate, State Intermediate Laddered Maturity or IM-IT Short Intermediate
Trust, must have a fixed maturity date within the range set forth under "
Unitholder Explanations--Settlement of Bonds in the Trusts--The Fund" ,
(iii) must be purchased at a price that results in a yield to maturity and in
a current return, in each case as of the Date of Deposit, at least equal to
that of the Failed Bonds, (iv) shall not be "when, as and if issued" 
bonds, (v) must be rated "BBB-" or better in the case of the Insured
Trusts and "A-" or better in the case of the Quality Trusts by
Standard & Poor's or "Baa" or better in the case of the Insured Trusts
and "A" or better in the case of the Quality Trusts by Moody's and
(vi) with respect to each Insured Trust, must be insured by one of the
Preinsured Bond Insurers or be eligible for (and when acquired be insured
under) the insurance obtained by such Insured Trust. Whenever a Replacement
Bond has been acquired for the Fund, the Trustee shall, within five days
thereafter, notify all Unitholders of the affected Trust of the acquisition of
the Replacement Bond and shall, on the next monthly distribution date which is
more than 30 days thereafter, make a pro rata distribution of the amount, if
any, by which the cost to the affected Trust of the Failed Bond exceeded the
cost of the Replacement Bond plus accrued interest. Once the original corpus
of a Trust is acquired, the Trustee will have no power to vary the investment
of the Trust; i.e., the Trust will have no managerial power to take advantage
of market variation to improve a Unitholder's investment.

If the right of limited substitution described in the preceding paragraph
shall not be utilized to acquire Replacement Bonds in the event of a failed
contract, the Sponsor will refund the sales charge attributable to such Failed
Bonds to all Unitholders of the affected Trust and distribute the principal
and accrued interest (at the coupon rate of such Failed Bonds to the date the
Failed Bonds are removed from the Fund) attributable to such Failed Bonds not
more than 30 days after such removal or such earlier time as the Trustee in
its sole discretion deems to be in the interest of the Unitholders. All such
interest paid to a Unitholder which accrued after the expected date of
settlement for purchase of his Units will be paid by the Sponsor and
accordingly will not be treated as tax-exempt income. In the event a
Replacement Bond should not be acquired by the Fund, the Estimated Net Annual
Interest Income per Unit for the affected Trust would be reduced and the
Estimated Current Return and Estimated Long-Term Return thereon might be
lowered. In addition, Unitholders should be aware that they may not be able at
the time of receipt of such principal to reinvest such proceeds in other
securities at a yield equal to or in excess of the yield which such proceeds
were earning to Unitholders in the affected Trust.

Distributions. Distributions of interest received by the Fund, pro rated on an
annual basis, will be made on a monthly basis unless the Unitholder elects to
receive them semi-annually. The first such distribution will be in the amount
indicated under "Per Unit Information" for the applicable Trust in
Part I of this Prospectus and will be made on the twenty-fifth day of the
month indicated under "Initial Distribution" therein to Unitholders of
record on the tenth day of such month. The first distribution of funds from
the Principal Account, if any, will be made on the first semi-annual
distribution date to Unitholders of record on the first semi-annual record
date, and thereafter such distributions will be made on a semi-annual basis,
except under certain special circumstances (see "Unitholder
Explanations--Public Offering--Distributions of Interest and Principal" ).

Change of Distribution Option. The plan of distribution selected by a
Unitholder will remain in effect until changed. Unitholders purchasing Units
in the secondary market will initially receive distributions in accordance
with the election of the prior owner. Unitholders may change the plan of
distribution in which they are participating. For convenience of Unitholders,
the Trustee will furnish a card for this purpose; cards may also be obtained
upon request from the Trustee. Unitholders desiring to change their plan of
distribution may so indicate on the card and return it together with their
certificate and such other documentation that the Trustee may then require, to
the Trustee. Certificates should only be sent by registered or certified mail
to minimize the possibility of their being lost or stolen. If the card and
certificate are properly presented to the Trustee, the change will become
effective as of the opening of business on the first day after the next
succeeding semi-annual record date and will be effective, unless further
changed, for all subsequent distributions.

Certificates. The Trustee is authorized to treat as the record owner of Units
that person who is registered as such owner on the books of the Trustee.
Ownership of Units of each Trust is evidenced by separate registered
certificates executed by the Trustee and the Sponsor unless a Unitholder or
the Unitholder's registered broker-dealer 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 evidenced as a
certificate, by presentation and surrender of such certificate to the Trustee
properly endorsed or accompanied by a written instrument or instruments of
transfer. A Unitholder must sign such written request, or such certificate
transfer instrument exactly as his name appears on the records of the Trustee,
and on the face of any certificate representing Units to be transferred, with
the signature guaranteed by a participant in the Securities Transfer Agents
Medallion Program ("STAMP" ) or such other signature guaranty program
in addition to, or in substitution for, STAMP, as may be accepted by the
Trustee. In certain instances the Trustee may require additional documents
such as, but not limited to, trust instruments, certificates of death,
appointments as executor or administrator or certificates of corporate
authority. Certificates will be issued in denominations of one Unit or any
multiple thereof. Certificates for Units will bear appropriate notations on
their face indicating which plan of distribution has been selected in respect
thereof. If a change in the plan of distribution is made, the existing
certificate must be surrendered to the Trustee and a new certificate will be
issued, at no charge to the Unitholder, to reflect the currently effective
plan of distribution.

Although no such charge is now made or contemplated, the Trustee may require a
Unitholder to pay a reasonable fee for each certificate re-issued (other than
as a result of a change in plan of distribution) or transferred and to pay any
governmental charge that may be imposed in connection with each such 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.

ESTIMATED CURRENT RETURNS AND ESTIMATED LONG-TERM RETURNS

- --------------------------------------------------------------------------
As of the close of business on the day before the Date of Deposit (except for
an IM-IT, an IM-IT Discount or a Pennsylvania IM-IT Trust as of 8:00 A.M.
Central Time on the Date of Deposit) the Estimated Current Returns and the
Estimated Long-Term Returns, under the monthly and semi-annual distribution
plans, were as set forth in the "Per Unit Information" for each Trust
in Part I of this Prospectus. 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 Trustee and the Evaluator and with
the principal prepayment, redemption, maturity, exchange or sale of Securities
while the Public Offering Price will vary with changes in the offering price
of the underlying Securities; therefore, 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 all of the
Securities in a Trust and (2) takes into account the expenses and sales charge
associated with each Trust Unit. Since the market values and estimated
retirements of the Securities 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 of the Securities contracted for by the Sponsor
for deposit in the Fund, it may be necessary for the Sponsor or Trustee to pay
on the settlement dates for delivery of such Securities amounts covering
accrued interest on such Securities which exceed the amounts which will be
made available through cash furnished by the Sponsor on the Date of Deposit,
which amount of 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 such excess and will be reimbursed therefor when funds become
available from interest payments on the particular Securities with respect to
which such payments may have been made. Also, since interest on any "when,
as and if issued" Securities 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 to the extent necessary pay Trust expenses) in
order to maintain (or in some cases approach) the same estimated net annual
interest incomes during the first year of the Trusts' operations as described
under "Per Unit Information" for the applicable Trust in Part I of
this Prospectus.

ACCRUED INTEREST

- --------------------------------------------------------------------------
Accrued interest is an accumulation of unpaid interest on securities which
generally is paid semi-annually, although each Trust accrues such 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 subsequent to the First Settlement Date, the Public Offering Price of
Units will have added to it the proportionate share of accrued interest to the
date of settlement. Unitholders will receive on the next distribution date of
a Trust the amount, if any, of accrued interest paid on their Units.

In an effort to reduce the amount of accrued interest which would otherwise
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 amount of accrued interest to be 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 subsequent to the First Settlement Date. See "Unitholder
Explanations--Public Offering--Distributions of Interest and Principal." 

Because of the varying interest payment dates of the Securities, 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. Since the Trustee has the use of the funds held in the Interest Account
for distributions to Unitholders and since such Account is
non-interest-bearing to Unitholders, the Trustee benefits thereby.

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 Securities in such Trust's portfolio, a sales charge of 4.9% of
the Public Offering Price (5.152% of the aggregate offering price of the
Securities) for an IM-IT, a State (other than a State Intermediate Laddered
Maturity Trust) or a National Quality Trust, 4.3% of the Public Offering Price
(4.493% of the aggregate offering price of the Securities) for an IM-IT
Limited Maturity Trust, 4.0% of the Public Offering Price (4.167% of the
aggregate offering price of the Securities) for an IM-IT Discount Trust, 3.9%
of the Public Offering Price (4.058% of the aggregate offering price of the
Securities) for an IM-IT Intermediate Trust, 3.0% of the Public Offering Price
(3.093% of the aggregate offering price of the Securities) for a State
Intermediate Laddered Maturity Trust and 2.0% of the Public Offering Price
(2.041% of the aggregate offering price of the Securities) for an IM-IT Short
Intermediate Trust, cash, if any, in the Principal Account held or owned by
such Trust, 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 Securities in each Trust, an applicable sales charge as determined in
accordance with the table set forth below, which is based upon the estimated
long-term return life of each Trust, cash, if any, in the Principal Account
held or owned by such Trust, and accrued interest, if any. For purposes of
computation, 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 such call date will be
deemed to be the date upon which they mature; or (b) such Bonds are subject to
a "mandatory tender" , in which case such mandatory tender will be
deemed to be the date upon which they mature. 

The effect of this method of sales charge computation will be that different
sales charge rates will be applied to each Trust based upon the estimated
long-term return life of such Trust's Portfolio, in accordance with the
following schedule: 

<TABLE>
<CAPTION>
                                                Years To Maturity
Years To Maturity    Sales Charge                                    Sales Charge
<S>                  <C>                        <C>                  <C>
1                    1.010 %                    12                   4.712 %
2                    1.523                      13                   4.822
3                    2.041                      14                   4.932
4                    2.302                      15                   5.042
5                    2.564                      16                   5.152
6                    2.828                      17                   5.263
7                    3.093                      18                   5.374
8                    3.627                      19                   5.485
9                    4.167                      20                   5.597
10                   4.384                      21 to 30             5.708
11                   4.603                                                                           
</TABLE>

The sales charges in the above table are expressed as a percentage of the
aggregate bid prices of the Securities in a Trust. Expressed as a percent of
the Public Offering Price, the sales charge on a Trust consisting entirely of
a portfolio 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 Part I of any Prospectus by which such Trust is offered. The sales
charge applicable to quantity purchases during the initial offering period is,
however, reduced on a graduated basis to any person acquiring 100 or more
Units as follows: 

<TABLE>
<CAPTION>
                                             Dollar Amount of Sales
                                            Charge Reduction Per Unit
                        -------------------------------------------------------------------
                        IM-IT, State
                        (other than a
                        State
                        Intermediate
                        Laddered
                        Maturity Trust)  IM-IT Short
Aggregate Number of     and National     Intermediate    IM-IT Discount
Units Purchased*        Quality Trusts   Trust           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            
____________________
* The breakpoint sales charges are also applied on a dollar basis utilizing a breakpoint   
equivalent in the above table of $10 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.
</TABLE>

Any such reduced sales charge shall be the responsibility of the selling
Underwriter, broker, dealer or agent. The Sponsor will, however, increase the
concession or agency commission for such quantity purchases. See "Trust
Administration--General--Unit Distribution" . This reduced sales charge
structure 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 under 21 years of
age 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 securities for
one or more trust estate or fiduciary accounts.

Employees of Van Kampen American Capital Distributors Inc. and its affiliates
may purchase Units of the Trust at the current Public Offering Price less the
underwriting commission or less the dealer's concession in the absence of an
underwriting commission. Registered representatives of selling Underwriters
may purchase Units of the Fund at the current Public Offering Price less the
underwriting commission during the initial offering period and less the
dealer's concession for secondary market transactions. Registered
representatives of selling brokers, dealers, or agents may purchase Units of
the Fund at the current Public Offering Price less the dealer's concession
during the initial offering period and for secondary market transactions.

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 described in the table above, provided that at the time
of the initial purchase of units of 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 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 (see "Trust
Administration--General--Unit Distribution" ) 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.

Offering Price. The Public Offering Price of the Units will vary from the
amounts stated under "Summary of Essential Financial Information" in
Part I of this Prospectus in accordance with fluctuations in the prices of the
underlying Securities in each Trust.

As indicated above, the price of the Units as of the date the Securities were
deposited in each Trust was determined by adding to the aggregate offering
price of the Securities of a Trust an amount equal to the applicable sales
charge expressed as a percentage of the aggregate offering price of the
Securities and dividing the sum so obtained by the number of Units
outstanding. This computation produced a gross underwriting commission equal
to such sales charge expressed as a percentage of the Public Offering Price.
Such price determination as of the close of business on the day before the
Date of Deposit (except for an IM-IT, IM-IT Discount or a Pennsylvania IM-IT
Trust as of 8:00 A.M. Central Time on the Date of Deposit) was made on the
basis of an evaluation of the Securities in each Trust prepared by Interactive
Data Corporation, a firm regularly engaged in the business of evaluating,
quoting or appraising comparable securities. After the close of business on
the day before the Date of Deposit (except for an IM-IT, IM-IT Discount or a
Pennsylvania IM-IT Trust after 8:00 A.M. Central Time on the Date of Deposit)
and during the period of initial offering, the Evaluator will appraise or
cause to be appraised daily the value of the underlying Securities of each
Trust as of the Evaluation Time on days the New York Stock Exchange is open
for business and will adjust the Public Offering Price of the Units
commensurate with such appraisal. Such Public Offering Price will be effective
for all orders received at or prior to the Evaluation Time on each such day.
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. For
secondary market sales the Public Offering Price per Unit will be equal to the
aggregate bid price of the Securities in the Trust plus an amount equal to the
applicable secondary market sales charge expressed as a percentage of the
aggregate bid price of the Securities and dividing the sum so attained by the
number of Units then outstanding. This computation produces a gross commission
equal to such sales charge expressed as a percentage of the Public Offering
Price. For secondary market purposes such appraisal and adjustment with
respect to a Trust will be made by the Evaluator as of the Evaluation Time on
days in which the New York Stock Exchange is open for each day on which any
Unit of such Trust is tendered for redemption and it shall determine the
aggregate value of any Trust as of the Evaluation Time on such other days as
may be necessary.

The aggregate price of the Securities in each Trust has been and will be
determined on the basis of bid prices or offering prices, as is appropriate,
(a) on the basis of current market prices for the Securities obtained from
dealers or brokers who customarily deal in bonds comparable to those held by
the Fund; (b) if such prices are not available for any particular Securities,
on the basis of current market prices for comparable bonds; (c) by causing the
value of the Securities 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 Securities 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 such 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 such default (the "Defaulted Bonds" ) the value of the
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 such
Defaulted Bonds not covered by Permanent Insurance. In addition, the Evaluator
will consider the ability of the affected Portfolio Insurer to meet its
commitments under any Trust insurance policy, including the commitments to
issue Permanent Insurance. It is the position of the Sponsor that this is a
fair method of valuing the Bonds and the insurance obtained by an Insured
Trust and reflects a proper valuation method in accordance with the provisions
of the Investment Company Act of 1940. No value has been ascribed to insurance
obtained by an Insured Trust, if any, as of the date of this Prospectus.

The initial or primary Public Offering Price of the Units is equal to the
offering price per Unit of the underlying Securities in each Trust plus the
applicable sales charge plus interest accrued but unpaid from the First
Settlement Date to the date of settlement. The secondary market Public
Offering Price is equal to the bid price per Unit of the Securities in each
Trust plus the applicable sales charge plus accrued interest. The offering
price of Securities in each Trust may be expected to average approximately
0.5%-1% more than the bid price of such Securities. On the Date of Deposit,
the offering side evaluations of the Securities in the Trusts were higher than
the bid side evaluations of such Securities by the respective amounts
indicated in "Notes to Portfolios" in Part I of this Prospectus.

Although payment is normally made three business days following the order for
purchase, payment may be made prior thereto. 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. Delivery of certificates representing Units so ordered
will be made three business days following such order or shortly thereafter.
See "Redemption of Units" below for information regarding the ability
to redeem Units ordered for purchase.

Market for Units. During the initial public offering period, the Sponsor
and/or certain of the Underwriters intend to offer to purchase Units at a
price equivalent to the Public Offering Price which is based upon the
aggregate offering price per Unit of the underlying Securities in each Trust
plus accrued interest to the date of settlement less the related sales
commission. Afterward, although not obligated to do so, the Sponsor intends
to, and certain of the other Underwriters may, maintain a market for the Units
offered hereby and to offer continuously to purchase such Units at prices,
subject to change at any time, based upon the aggregate bid prices of the
Securities in the portfolio of each Trust plus interest accrued to the date of
settlement and plus 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 such
prices. In the event that a market is not maintained for the Units and the
Unitholder cannot find another purchaser, a Unitholder of any Trust desiring
to dispose of his Units may be able to dispose of such Units only by tendering
them to the Trustee for redemption at the Redemption Price, which is based
upon the aggregate bid price of the Securities in the portfolio of such Trust
plus any accrued interest. The aggregate bid prices of the underlying
Securities in a Trust are expected to be less than the related aggregate
offering prices. See "Redemption of Units" below. 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 existence any price in
excess of the Redemption Price and, if so, the amount thereof.

Distributions of Interest and Principal. Interest received by the Fund,
including that part of the proceeds of any disposition of Securities which
represents accrued interest, is credited by the Trustee to the Interest
Account for the appropriate Trust. Other receipts are credited to the
Principal Account for the appropriate Trust. Interest received by the Fund
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 (see "Public Offering--Offering
Price" above) will be distributed on or shortly after the twenty-fifth day
of each month on a pro rata basis to Unitholders of record of a Trust as of
the preceding record date who are entitled to distributions at that time under
the plan of distribution chosen. All distributions will be net of applicable
expenses. The pro rata share of cash in the Principal Account of a Trust will
be computed as of the date set forth under "Per Unit Information" for
the applicable Trust in Part I of this Prospectus, and thereafter as of the
semi-annual record date, and distributions to the Unitholders as of such
record date will be made on or shortly after the twenty-fifth day of such
month. Proceeds received from the disposition of any of the Securities after
such record date and prior to the following distribution date will be held in
the Principal Account and not distributed until the next distribution date.
The Trustee is not required to pay interest on funds held in any Principal or
Interest Account (but may itself earn interest thereon and therefore benefits
from the use of such 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 succeeding monthly
distribution date to holders of record on the related monthly record date.

The distribution to the Unitholders of a Trust as of each record date after
the First Settlement Date will be made on the following distribution date or
shortly thereafter and shall consist of an amount substantially equal to such
portion of the Unitholder's pro rata share of the estimated net annual
interest income in the Interest Account of such Trust after deducting
estimated expenses attributable as is consistent with the distribution plan
chosen. Because interest payments are not received by the Fund at a constant
rate throughout the year, such interest distribution may be more or less than
the amount credited to such Interest Account as of the record date. For the
purpose of minimizing fluctuations in the distributions from an Interest
Account, the Trustee is authorized to advance such amounts as may be necessary
to provide interest distributions of approximately equal amounts. The Trustee
shall be reimbursed for any such advances from funds in the applicable
Interest Account on the ensuing 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.

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 (as
determined on the basis set forth under "Trust Administration--Fund
Administration and Expenses" ). The Trustee also may withdraw from said
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. In addition, the Trustee may withdraw from the Interest and
Principal Accounts such amounts as may be necessary to cover purchases of
Replacement Bonds and redemptions of Units by the Trustee.

Reinvestment Option. Unitholders of unit investment trusts sponsored by Van
Kampen American Capital Distributors, Inc., may elect to have each
distribution of interest income, capital gains and/or principal on their Units
automatically reinvested in shares of any Van Kampen American Capital mutual
funds (except for B shares) which are registered in the Unitholder's state of
residence. Such mutual funds are hereinafter collectively referred to as the
"Reinvestment Funds" .

Each Reinvestment Fund has investment objectives which differ in certain
respects from those of the Trusts. The prospectus relating to each
Reinvestment Fund describes the investment policies of such fund and sets
forth the procedures to follow to commence reinvestment. A Unitholder may
obtain a prospectus for the respective Reinvestment Funds from Van Kampen
American Capital Distributors, Inc. at One Parkview Plaza, Oakbrook Terrace,
Illinois 60181. Texas residents who desire to reinvest may request that a
broker-dealer registered in Texas send the prospectus relating to the
respective fund.

After becoming a participant in a reinvestment plan, each distribution of
interest income, capital gains and/or principal on the participant's Units
will, on the applicable distribution date, automatically be applied, as
directed by such person, as of such distribution date by the Trustee to
purchase shares (or fractions thereof) of the applicable Reinvestment Fund at
a net asset value as computed as of the close of trading on the New York Stock
Exchange 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
as described above. 

Confirmations of all reinvestments by a Unitholder into a Reinvestment Fund
will be mailed to the Unitholder by such Reinvestment Fund. A participant may
elect to terminate his or her reinvestment plan and receive future
distributions of his or her Units in cash by notifying the Trustee in writing
at any time prior to five days before the next distribution date. There will
be no charge or other penalty for such termination. Each Reinvestment Fund,
its sponsor and investment adviser shall have the right to terminate at any
time the reinvestment plan relating to such fund.

Unitholders of New York Trusts, other than residents of Massachusetts, 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,
as in connection with lost, stolen or destroyed certificates) and by payment
of applicable governmental charges, if any. Thus, redemption of Units cannot
be effected until certificates representing such Units have been delivered by
the person seeking redemption or satisfactory indemnity provided. No
redemption fee will be charged. On the third business day following such
tender, the Unitholder will receive in cash an amount for each Unit equal to
the Redemption Price per Unit next computed after receipt by the Trustee of
such 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 such Exchange is open for trading
and such Units will be deemed to have been tendered to the Trustee on such day
for redemption at the Redemption Price computed on that day.

Under regulations issued by the Internal Revenue Service, the Trustee will be
required to withhold a specified percentage of the principal amount of a Unit
redemption if the Trustee has not been furnished the redeeming Unitholder's
tax identification number in the manner required by such regulations. Any
amount so withheld is transmitted to the Internal Revenue Service and may be
recovered by the Unitholder only when filing 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, such Unitholder should provide a tax identification
number to the Trustee in order to avoid this possible "back-up
withholding" in the event the Trustee has not been previously provided
such number.

Accrued interest paid on redemption shall be withdrawn from the Interest
Account of such Trust or, if the balance therein is insufficient, from the
Principal Account of such Trust. All other amounts will be withdrawn from the
Principal Account of such Trust. The Trustee is empowered to sell underlying
Securities of a Trust in order to make funds available for redemption. Units
so redeemed shall be cancelled.

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 Securities in
each Trust, while the initial and primary Public Offering Price of Units will
be determined on the basis of the offering price of the Securities in each
Trust, as of the Evaluation Time on days of trading on the New York Stock
Exchange on the date any such determination is made. On the Date of Deposit
the Public Offering Price per Unit (which is based on the offering prices of
the Bonds in each Trust and includes the sales charge) exceeded the value at
which Units could have been redeemed (based upon the current bid prices of the
Securities in such Trust) by the amount shown under "Summary of Essential
Financial Information" in Part I of this Prospectus. While the Trustee has
the power to determine the Redemption Price per Unit when Units are tendered
for redemption, such authority has been delegated to the Evaluator which
determines the price per Unit on a daily basis. The Redemption Price per Unit
is the pro rata share of each Unit in each Trust on the basis of (i) the cash
on hand in such Trust or moneys in the process of being collected, (ii) the
value of the Securities in such Trust based on the bid prices of the
Securities therein, except for cases in which the value of insurance has been
included, (iii) interest accrued thereon, less (a) amounts representing taxes
or other governmental charges payable out of such Trust and (b) the accrued
expenses of such Trust. The Evaluator may determine the value of the
Securities in each Trust by employing any of the methods set forth in "
Public Offering--Offering Price" above. 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 such Bonds are in default in payment
of principal or interest or in significant risk of such 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" 
above.

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 Securities
represented by the Units so redeemed. As stated above, the Trustee may sell
Securities to cover redemptions. When Securities are sold, the size and
diversity of the affected Trust will be reduced. Such sales may be required at
a time when Securities 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 Securities and Exchange
Commission determines that trading on that Exchange is restricted or an
emergency exists, as a result of which disposal or evaluation of the
Securities in the Trusts is not reasonably practicable, or for such other
periods as the Securities and Exchange Commission may by order permit. Under
certain extreme circumstances the Sponsor may apply to the Securities and
Exchange Commission for an order permitting a full or partial suspension of
the right of Unitholders to redeem their Units. 

Reports Provided. The Trustee shall furnish Unitholders of a Trust in
connection with each distribution a statement of the amount of interest and
the amount of other receipts (received since the preceding distribution), if
any, being distributed expressed in each case as a dollar amount representing
the pro rata share of each Unit of a Trust outstanding. For as long as the
Sponsor deems it to be in the best interests of the Unitholders, the accounts
of each Trust shall be audited, not less frequently than annually, by
independent certified public accountants and the report of such accountants
shall be furnished by the Sponsor or Trustee to Unitholders of such Trusts
upon request. Within a reasonable period of time after the end of each
calendar year, the Trustee shall furnish to each person who at any time during
the calendar year was a registered Unitholder of a Trust a statement (i) as to
the Interest Account: interest received (including amounts representing
interest received upon any disposition of Securities) and the percentage of
such interest by states in which the issuers of the Securities are located,
deductions for applicable taxes and for fees and expenses of such Trust, for
purchases of Replacement Bonds and for redemptions of Units, if any, and the
balance remaining after such distributions and deductions, expressed in each
case both as a total dollar amount and as a dollar amount representing the pro
rata share of each Unit outstanding on the last business day of such calendar
year; (ii) as to the Principal Account: the dates of disposition of any
Securities and the net proceeds received therefrom (excluding any portion
representing accrued interest), the amount paid for purchases of Replacement
Bonds and for redemptions of Units, if any, deductions for payment of
applicable taxes and fees and expenses of the Trustee, the amount of "when
issued" interest treated as a return of capital, if any, and the balance
remaining after such distributions and deductions expressed both as a total
dollar amount and as a dollar amount representing the pro rata share of each
Unit outstanding on the last business day of such calendar year; (iii) a list
of the Securities held and the number of Units outstanding on the last
business day of such calendar year; (iv) the Redemption Price per Unit based
upon the last computation thereof made during such calendar year; and (v)
amounts actually distributed during such calendar year from the Interest and
Principal Accounts, separately stated, expressed both as total dollar amounts
and as dollar amounts representing the pro rata share of each Unit
outstanding. In order to comply with Federal and state tax reporting
requirements, Unitholders will be furnished, upon request to the Trustee,
evaluations of the Securities in a Trust furnished to it by the Evaluator.
Each distribution statement of a Trust will reflect pertinent information in
respect of the other plan of distribution so that Unitholders may be informed
regarding the results of such other plan of distribution.

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 "
Unitholder Explanations--Settlement of Bonds in the Trusts--Objectives and
Securities Selection" . The "Portfolio Insurers" and the "
Preinsured Bond Insurers" are described under "Notes to Portfolios" 
 in Part I of this Prospectus. The Portfolio Insurers are either AMBAC
Indemnity 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 Part I of this Prospectus). 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 Bonds 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 "Unitholder Explanations--Public Offering--Offering
Price" . 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 "Unitholder
Explanations--Public Offering--Redemption of Units" ) 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
Bonds until their respective maturities in order to realize the benefits of
such Trust's portfolio insurance (see "Trust
Administration--General--Amendment or Termination" ).

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 "Unitholder
Explanations--Public Offering--Offering Price" . 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 "
Unitholder Explanations--Public Offering--Offering Price" 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 "
Unitholder Explanations--Settlement of Bonds in the Trusts--Objectives and
Securities Selection" .

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)
                                                       -----------------------------------------
                                                       Date           Admitted   Policyholders' 
Name                                                   Established    Assets     Surplus        
- ------------------------------------------------------ -------------- ---------- ---------------
<S>                                                    <C>            <C>        <C>
AMBAC Indemnity Corporation (at 3/31/96)..............          1970  $    2,440 $          878 
Capital Guaranty Insurance Corporation (at 9/30/96)...          1987         313            194 
Financial Guaranty Insurance Company (at 9/30/96).....          1984       2,436          1,097 
Financial Security Assurance, Inc. (at 9/30/96).......          1984       1,184            452 
MBIA Insurance Corporation (at 9/30/96)...............          1986       4,300          1,300 
</TABLE>

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 Securities 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" 
 .

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.

For information relating to the insurance on the Bonds in the Insured Trusts
and the breakdown of the insurers of Preinsured Bonds, see footnote (5) in
"Notes to Portfolios" in Part I of this Prospectus.

UNDERWRITING

- --------------------------------------------------------------------------
For a breakdown of the Underwriters who have severally purchased Units of each
Trust from the Sponsor, see "Other Matters--Underwriting" in Part I of
this Prospectus.

Units may also be sold to broker-dealers and others at prices representing the
per Unit concession or agency commission stated under "Trust
Administration--General--Unit Distribution" . However, resales of Units by
such broker-dealers and others to the public will be made at the Public
Offering Price described in the Prospectus. The Sponsor reserves the right to
reject, in whole or in part, any order for the purchase of Units and the right
to change the amount of the concession or agency commission from time to time.

In addition to any other benefits the Underwriters may realize from the sale
of the Units of the Fund, the Agreement Among Underwriters provides that the
Sponsor will share on a pro rata basis among certain Underwriters (those who
underwrite at least 250 Units) 50% of the aggregate gain, if any, represented
by the difference between the Sponsor's cost of the Securities in connection
with their acquisition and the evaluation thereof on the Date of Deposit less
deductions for certain accrued interest and certain other costs. See "
Trust Administration--General--Sponsor and Underwriter Compensation" 
herein and "Portfolio" for the applicable Trust in Part I of this
Prospectus.

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 Underwriters,
brokers, dealers, banks and/or others may be eligible to win other nominal
awards for certain sales efforts, or under which the Sponsor will reallow to
any such Underwriters, brokers, dealers, banks and/or others 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 underwriters, brokers,
dealers, banks or others 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.

FUND ADMINISTRATION AND EXPENSES

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Sponsor. Van Kampen American Capital Distributors, Inc., a Delaware
corporation, is the Sponsor of the Trusts. The Sponsor is an indirect
subsidiary of VK/AC Holding, Inc. Prior to October 31, 1996, VK/AC Holding,
Inc. was controlled, through the ownership of a substantial majority of its
common stock, by The Clayton & Dubilier Private Equity IV Limited Partnership.
On October 31, 1996, VK/AC Holding, Inc. became a wholly owned indirect
subsidiary of Morgan Stanley Group Inc. pursuant to the closing of an
Agreement and Plan of Merger among Morgan Stanley Group Inc., MSAM Holding II,
Inc. and MSAM Acquisition Inc., whereby MSAM Acquisition Inc. was merged with
and into VK/AC Holding, Inc. and VK/AC Holding, Inc. was the surviving
corporation (the "Acquisition" ).

As a result of the Acquisition, VK/AC Holding, Inc. became a wholly owned
subsidiary of MSAM Holdings II, Inc. which, in turn, is a wholly owned
subsidiary of Morgan Stanley Group Inc. Morgan Stanley Group Inc. and various
of its directly or indirectly owned subsidiaries, including Morgan Stanley
Asset Management Inc., an investment adviser ("MSAM" ), Morgan Stanley
& Co. Incorporated, a registered broker-dealer and investment adviser, and
Morgan Stanley International, are engaged in a wide range of financial
services. Their 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; and
global custody, securities clearance services and securities lending. As of
September 30, 1996, MSAM, together with its affiliated investment advisory
companies, had approximately $103.5 billion of assets under management and
fiduciary advice. 

On February 5, 1997, Morgan Stanley Group Inc. and Dean Witter, Discover & Co.
announced that they had entered into an Agreement and Plan of Merger to form
Morgan Stanley, Dean Witter, Discover & Co. Subject to certain conditions
being met, it is currently anticipated that the transaction will close in
mid-1997. Thereafter, Van Kampen American Capital Distributors, Inc. will be
an indirect subsidiary of Morgan Stanley, Dean Witter, Discover & Co.

Dean Witter, Discover & Co. is a financial services company with three major
businesses:  full service brokerage, credit services and asset management.

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 Series thereof or to any other Underwriter. 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 December 31, 1996, the Sponsor and its Van Kampen American Capital
affiliates managed or supervised approximately $59 billion of investment
products, of which over $21.78 billion is invested in municipal securities.
The Sponsor and its Van Kampen American Capital affiliates managed $48 billion
of assets, consisting of $29.9 billion for 59 open end mutual funds (of which
46 are distributed by Van Kampen American Capital Distributors, Inc.), $13.12
billion for 38 closed-end funds and $4.99 billion for 114 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-end 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 Securities and Exchange Commission,
(ii) terminate the Trust Agreement and liquidate the Fund as provided therein
or (iii) continue to act as Trustee without terminating the Trust Agreement.

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.

Compensation of Sponsor and Evaluator. 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
an annual supervisory fee as indicated under "Summary of Essential
Financial Information" in Part I of this Prospectus for providing
portfolio supervisory services for the Fund. Such fee may exceed the actual
costs of providing such supervisory services for this Fund, but at no time
will the total amount received for portfolio supervisory services rendered to
Series 1 of the Fund and subsequent series and to any other unit investment
trusts sponsored by the Sponsor for which the Evaluator provides portfolio
supervisory services in any calendar year exceed the aggregate cost to the
Evaluator of supplying such services in such year. In addition, the Evaluator
shall receive an annual evaluation fee as indicated under "Summary of
Essential Financial Information" in Part I of this Prospectus for
regularly evaluating each Trust's portfolio. Such fees are based on the
outstanding principal amount of Securities in each Trust on the Date of
Deposit for the first year and as of the close of business on January 1 for
each year thereafter. Both of the foregoing fees may be increased without
approval of the Unitholders by amounts not exceeding proportionate increases
under the category "All Services Less Rent of Shelter" in the Consumer
Price Index published by the United States Department of Labor or, if such
category is no longer published, in a comparable category. The Sponsor and the
Underwriters will receive sales commissions and may realize other profits (or
losses) in connection with the sale of Units and the deposit of the Securities
as described under "General--Sponsor and Underwriter Compensation" 
below.

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.

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 (see "Unitholder Explanations--Public Offering--Reports
Provided" ). 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 Securities 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.

Trustee's Fee. For its services the Trustee will receive a fee based on the
aggregate outstanding principal amount of Securities in each Trust as of the
opening of business on January 2 and July 2 of each year as set forth under
"Per Unit Information" for the applicable Trust in Part I of this
Prospectus. During the first year the Trustee may agree to reduce its fee (and
to the extent necessary pay miscellaneous expenses of a Trust) as stated under
"Per Unit Information" for the applicable Trust in Part I of this
Prospectus. After the first year such fee will be computed at $.51 per $1,000
principal amount of Securities for that portion of each Trust under the
semi-annual distribution plan and $.91 per $1,000 principal amount of
Securities for that portion of each Trust under the monthly distribution plan.
Based on the size of the Trust on the Date of Deposit, the Trustee's estimated
annual fees for ordinary recurring services would initially amount to that
amount set forth under "Per Unit Information" for the applicable Trust
in Part I of the Prospectus. The Trustee's fees are payable monthly on or
before the twenty-fifth day of each month from the Interest Account of each
Trust to the extent funds are available and then from the Principal Account of
each Trust, with such payments being based on each Trust's portion of such
expenses. Since the Trustee has the use of the funds being held in the
Principal and Interest Accounts for future distributions, payment of expenses
and redemptions and since such Accounts are non-interest bearing to
Unitholders, the Trustee benefits thereby. Part of the Trustee's compensation
for its services to each Trust is expected to result from the use of these
funds. Such fees may be increased without approval of the Unitholders by
amounts not exceeding proportionate increases under the category "All
Services Less Rent of Shelter" in the Consumer Price Index published by
the United States Department of Labor or, if such category is no longer
published, in a comparable category. The Trustee's fees will not be increased
in future years in order to make up any reduction in the Trustee's fees
described under "Per Unit Information" for the applicable Trust in
Part I of this Prospectus. For a discussion of the services rendered by the
Trustee pursuant to its obligations under the Trust Agreement, see "
Unitholder Explanations--Public Offering--Reports Provided" and "
Trustee" above.

 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 Securities, 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 Securities 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
on 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
Securities 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 such 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 "Unitholder
Explanations--Public Offering--Redemption of Units" . 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 Securities to issue new obligations in exchange or
substitution for any Security 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 Security or (2) in
the written opinion of the Sponsor the issuer will probably default with
respect to such Security 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
Securities originally deposited thereunder. Within five days after the deposit
of obligations in exchange or substitution for underlying Securities, the
Trustee is required to give notice thereof to each Unitholder of the Trust
thereby affected, identifying the Securities eliminated and the Securities
substituted therefor. Except as stated herein and under "Unitholder
Explanations--Settlement of Bonds in the Trusts--Replacement Bonds" 
regarding the substitution of Replacement Bonds for Failed Bonds, the
acquisition by the Fund of any securities other than the Securities initially
deposited is not permitted.

If any default in the payment of principal or interest on any Security 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 Security within 30 days after notification by
the Trustee to the Sponsor of such default, the Trustee may in its discretion
sell the defaulted Security and not be liable for any depreciation or loss
thereby incurred.

Sponsor Purchases of Units. The Trustee shall 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 such
Units by notifying the Trustee before the close of business on the second
succeeding business day and by making payment therefor to the Unitholder not
later than the day on which the Units would otherwise have been redeemed by
the Trustee. Units held by the Sponsor may be tendered to the Trustee for
redemption as any other Units. The offering price of any Units acquired by the
Sponsor will be in accord with the Public Offering Price described in the then
currently effective prospectus describing such Units. Any profit resulting
from the resale of such Units will belong to the Sponsor which likewise will
bear any loss resulting from a lower offering or Redemption Price subsequent
to its acquisition of such Units.

Insurance Premiums. The cost of the portfolio insurance obtained by the
respective Trusts, if any, is that amount shown in footnote (5) in "Notes
to Portfolios" in Part I of this Prospectus, so long as such Trust retains
the Bonds. Premiums, which are obligations of each Insured Trust, are payable
monthly by the Trustee on behalf of the respective Trust. As Bonds in the
portfolio of 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 no longer owned by and held in such Trust. 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 premiums for such permanent insurance with respect to
each Bond will decline over the life of the Bond. A Trust does not incur any
expense for Preinsured Bond insurance, since the premium or premiums for such
insurance have been paid by the issuer or the Sponsor prior to the deposit of
such Preinsured Bonds in a Trust. Preinsured Bonds are not additionally
insured by an Insured Trust.

Miscellaneous Expenses. 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
Securities to pay such amounts.

GENERAL

- --------------------------------------------------------------------------
Amendment or Termination. The Sponsor and the Trustee have the power to amend
the Trust Agreement without the consent of any of the Unitholders when such an
amendment is (a) to cure an ambiguity or to correct or supplement any
provision of the Trust Agreement which may be defective or inconsistent with
any other provision contained therein or (b) to make such other provisions as
shall not adversely affect the interest of the Unitholders (as determined in
good faith by the Sponsor and the Trustee), provided that the Trust Agreement
may not be amended to increase the number of Units issuable thereunder or to
permit the deposit or acquisition of securities either in addition to or in
substitution for any of the Securities initially deposited in the Fund, except
for the substitution of certain refunding securities for such Securities. In
the event of any amendment, the Trustee is obligated to notify promptly all
Unitholders of the substance of such amendment.

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 that indicated
under "Summary of Essential Financial Information" in Part I of this
Prospectus. 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 Security 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, an IM-IT Discount, a State (other than a State
Intermediate Laddered Maturity Trust) 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 Securities 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 governmental charges.
The sale of Securities 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 Securities
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 are in default and 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.

Limitation on Liabilities. The Sponsor, the Evaluator and the 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 Securities. 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 shall not be liable for any taxes or other governmental charges
imposed upon or in respect of the Securities or upon the interest thereon or
upon it as Trustee under the Trust Agreement or upon or in respect of 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, Sponsor and Unitholders may rely on any evaluation furnished by
the Evaluator and shall have no responsibility for the accuracy thereof.
Determinations by the Evaluator under the Trust Agreement 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. This provision shall not
protect the Evaluator in any case of willful misfeasance, bad faith, gross
negligence or reckless disregard of its obligations and duties.

Unit Distribution. During the initial offering period, Units will be
distributed to the public by Underwriters, broker-dealers and others (see "
Unitholder Explanations--Underwriting" ) at the Public Offering Price, plus
interest accrued but unpaid from the First Settlement Date to the date of
settlement as described above under "Unitholder Explanations--Accrued
Interest" . Upon the completion of the initial offering, Units repurchased
in the secondary market, if any, may be offered by this Prospectus at the
secondary market Public Offering Price plus interest accrued to the date of
settlement.

The Sponsor intends to qualify the 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 either from the Sponsor (in the case of dealer
transactions) or through the Sponsor (in the case of transactions involving
brokers or others).

<TABLE>
<CAPTION>
                                  IM-IT, State
                                  (other than a
                                  State
                                  Intermediate
                                  Laddered                                    IM-IT      State
                       IM-IT      Maturity Trust) IM-IT Short   IM-IT         Limited    Intermediate
                       Discount   and National    Intermediate  Intermediate  Maturity   Laddered
                       Trust      Quality Trust   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 "Unitholder
Explanations--Public Offering--General" . In addition to the concessions
and agency commissions described herein, volume concessions or agency
commissions of an additional $5.00 per Unit of an IM-IT, a State (other than a
State Intermediate Laddered Maturity Trust) 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. Such 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 described herein 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 are making Units of the
Fund 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. Under the Glass-Steagall Act,
banks are prohibited from underwriting Units of the Fund; however, the
Glass-Steagall Act does permit certain agency transactions and the banking
regulators have not indicated that these particular agency transactions are
not permitted under such Act. In addition, state securities laws on this issue
may differ from the interpretations of federal law expressed herein and banks
and financial institutions may be required to register as dealers pursuant to
state law. Any quantity discount (see "Unitholder Explanations--Public
Offering--General" ) 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 as determined
using the table found in "Unitholder Explanations--Public
Offering--General" . The minimum purchase in the primary and secondary
market will be one Unit. 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. See
"Unitholder Explanations--Underwriting." 

      Sponsor and Underwriter Compensation. The Underwriters will receive a
gross sales commission equal to that percentage of the Public Offering Price
of the Units as indicated under "Unitholder Explanations--Public
Offering--Offering Price" less any reduced sales charges for quantity
purchases as described under "Unitholder Explanations--Public
Offering--General" .

The Sponsor will receive from the Underwriters the excess of such gross sales
commission over the amounts set forth in the following tables, as of the Date
of Deposit.

<TABLE>
<CAPTION>
                                  IM-IT, State
                                  (other than a
                                  State
                                  Intermediate
                                  Laddered                                    IM-IT      State
                       IM-IT      Maturity Trust) IM-IT Short   IM-IT         Limited    Intermediate
                       Discount   and National    Intermediate  Intermediate  Maturity   Laddered
                       Trust      Quality Trust   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. See "Unitholder Explanations--Public
Offering--General." 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 (in addition to the Unit basis described herein)
utilizing a breakpoint equivalent of $1,000 per Unit and will be applied on
whichever basis is more favorable to the Underwriter.

In addition, the Sponsor and certain of the Underwriters will realize a profit
or the Sponsor will sustain a loss, as the case may be, as a result of the
difference between the price paid for the Securities by the Sponsor and the
cost of such Securities to a Trust (which is based on the determination by
Interactive Data Corporation of the aggregate offering price of the underlying
Securities in such Trust on the Date of Deposit). See "Unitholder
Explanations--Underwriting" herein and "Portfolio" for the
applicable Trust and "Notes to Portfolios" in Part I of this
Prospectus. The Sponsor and the Underwriters may also realize profits or
sustain losses with respect to Securities deposited in each Trust 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 Securities in the
Trusts were acquired. The Underwriters may further realize additional profit
or loss during the initial offering period as a result of possible
fluctuations in the market value of the Securities in each Trust after the
Date of Deposit, 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.

As stated under "Unitholder Explanations--Public Offering--Market for
Units" , the Sponsor intends to, and certain of the other Underwriters may,
maintain a secondary market for the Units of the Fund. In so maintaining a
market, such person or persons will also realize profits or sustain losses in
the amount of any difference between the price at which Units are purchased
and the price at which Units are resold (which price is based on the bid
prices of the Securities in a Trust and includes a sales charge). In addition,
such person or persons will also realize profits or sustain losses resulting
from a redemption of such repurchased Units at a price above or below the
purchase price for such Units, respectively.

Legal Opinions. 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.
Special counsel to the Fund for certain state tax matters are named under "
Tax Status" for each Trust appearing in Part I of this Prospectus. Kroll &
Tract LLP has acted as counsel for the Trustee and as special counsel to the
Fund for New York tax matters. None of the special counsel for the Fund has
expressed any opinion regarding the completeness or materiality of any matters
contained in this Prospectus other than the tax opinion set forth under "
Tax Status" relating to the Trust for which it has provided an opinion in
Part I of this Prospectus.

Independent Certified Public Accountants. The statements of condition and the
related securities portfolios at the Date of Deposit included in this
Prospectus have been audited by Grant Thornton LLP, independent certified
public accountants, as set forth in their report in this Prospectus, and are
included herein in reliance upon the authority of said firm as experts in
accounting and auditing.

FEDERAL TAX STATUS

- --------------------------------------------------------------------------
In the opinion of Chapman and Cutler, counsel for the Sponsor, under existing
law as of the date of this Part II of the 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 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. 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 earned original issue discount and
amortized bond premium, if any) is determined by apportioning the cost of the
Units among each of the Trust assets ratably according to value as of the
valuation date nearest the date of acquisition of the Units. 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 by AMBAC Indemnity, Financial Guaranty or
a combination thereof 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

(4)Any proceeds paid under individual policies obtained by issuers of 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 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.

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 accured
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. However, the Superfund Tax could be extended retroactively. 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. The U.S.
Treasury Department has proposed extending the financial institution rules to
all corporations. Investors with questions regarding this issue should consult
with 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.

In the opinion of Kroll & Tract LLP, 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.

Section 86 of the Code, in general, 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,
see "Tax Status" for the applicable Trust in Part I of this
Prospectus. 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.

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.

As published by the rating companies.

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.

<TABLE>
<CAPTION>
Title                                                       Page                                                             
<S>                                                         <C>  
INTRODUCTION                                                2    
UNITHOLDER EXPLANATIONS                                     3    
Settlement of Bonds in the Trusts                           3    
The Fund                                                    3    
Objectives and Securities Selection                         4    
Risk Factors                                                4    
Replacement Bonds                                           8    
Distributions                                               9    
Change of Distribution Option                               9    
Certificates                                                9    
Estimated Current Returns and Estimated Long-Term Returns   10   
Accrued Interest                                            11   
Public Offering                                             11   
General                                                     11   
Offering Price                                              13   
Market for Units                                            15   
Distributions of Interest and Principal                     15   
Reinvestment Option                                         16   
Redemption of Units                                         16   
Reports Provided                                            17   
Insurance on the Bonds in the Insured Trusts                18   
Underwriting                                                21   
TRUST ADMINISTRATION                                        22   
Fund Administration and Expenses                            22   
Sponsor                                                     22   
Compensation of Sponsor and Evaluator                       23   
Trustee                                                     23   
Trustee's Fee                                               24   
Portfolio Administration                                    24   
Sponsor Purchases of Units                                  25   
Insurance Premiums                                          25   
Miscellaneous Expenses                                      25   
General                                                     25   
Amendment or Termination                                    25   
Limitation on Liabilities                                   26   
Unit Distribution                                           27   
Sponsor and Underwriter Compensation                        28   
Legal Opinions                                              29   
Independent Certified Public Accountants                    29   
FEDERAL TAX STATUS                                          30   
DESCRIPTION OF RATINGS                                      33   
</TABLE>

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. 

PROSPECTUS

PART II

February 1997

Insured MunicipalsIncome Trust,Insured Multi-SeriesandInsured MunicipalsIncome
Trust andInvestors' Quality Tax-Exempt Trust,Multi-Series

A Wealth of Knowledge A Knowledge of Wealthsm 

VAN KAMPEN AMERICAN CAPITAL

One Parkview Plaza
Oakbrook Terrace, Illinois 60181

2800 Post Oak Boulevard
Houston, Texas 77056

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




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