DEFINED ASSET FUNDS MUNICIPAL INVT TR FD INTERM TERM SER 252
497, 2000-06-23
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                           DEFINED ASSET FUNDS--REGISTERED TRADEMARK--
                           ----------------------------------------------------

                           MUNICIPAL INVESTMENT TRUST FUND
                           INTERMEDIATE TERM SERIES--252
                           (A UNIT INVESTMENT TRUST)
                           -  PORTFOLIO OF INTERMEDIATE TERM MUNICIPAL BONDS
                           -  DESIGNED FOR INCOME FREE FROM REGULAR FEDERAL
                              INCOME TAX
                           -  MONTHLY INCOME DISTRIBUTIONS

SPONSORS:
MERRILL LYNCH,
PIERCE, FENNER & SMITH
INCORPORATED               -----------------------------------------------------
SALOMON SMITH BARNEY INC.  The Securities and Exchange Commission has not
PRUDENTIAL SECURITIES      approved or disapproved these Securities or passed
INCORPORATED               upon the adequacy of this prospectus. Any
PAINEWEBBER INCORPORATED   representation to the contrary is a criminal offense.
DEAN WITTER REYNOLDS INC.  Prospectus dated June 23, 2000.

<PAGE>
--------------------------------------------------------------------------------

Defined Asset Funds-SM-
Defined Asset Funds-Registered Trademark- is America's oldest and largest family
of unit investment trusts, with over $160 billion sponsored over the last 28
years. Defined Asset Funds has been a leader in unit investment trust research
and product innovation. Our family of Funds helps investors work toward their
financial goals with a full range of quality investments, including municipal,
corporate and government bond portfolios, as well as domestic and international
equity portfolios.

Defined Asset Funds offer a number of advantages:
  - A disciplined strategy of buying and holding with a long-term view is the
    cornerstone of Defined Asset Funds.
  - Fixed portfolio: Defined Funds follow a buy and hold investment strategy;
    funds are not managed and portfolio changes are limited.
  - Defined Portfolios: We choose the stocks and bonds in advance, so you know
    what you're investing in.
  - Professional research: Our dedicated research team seeks out stocks or bonds
    appropriate for a particular fund's objectives.
  - Ongoing supervision: We monitor each portfolio on an ongoing basis.
No matter what your investment goals, tolerance for risk or time horizon,
there's probably a Defined Asset Fund that suits your investment style. Your
financial professional can help you select a Defined Asset Fund that works best
for your investment portfolio.

THE FINANCIAL INFORMATION IN THIS PROSPECTUS IS AS OF MARCH 31, 2000, THE
EVALUATION DATE.

<TABLE>
<S>                                    <C>
CONTENTS
                                       PAGE
                                       ----
Risk/Return Summary..................     3
What You Can Expect From Your
  Investment.........................     7
  Monthly Income.....................     7
  Return Figures.....................     7
  Records and Reports................     7
The Risks You Face...................     8
  Interest Rate Risk.................     8
  Call Risk..........................     8
  Reduced Diversification Risk.......     8
  Liquidity Risk.....................     8
  Concentration Risk.................     8
  Bond Quality Risk..................     9
  Insurance Related Risk.............     9
  Litigation and Legislation Risks...     9
Selling or Exchanging Units..........     9
  Sponsors' Secondary Market.........     9
  Selling Units to the Trustee.......     9
  Exchange Option....................    10
How The Fund Works...................    10
  Pricing............................    10
  Evaluations........................    10
  Income.............................    11
  Expenses...........................    11
  Portfolio Changes..................    11
  Fund Termination...................    12
  Certificates.......................    12
  Trust Indenture....................    12
  Legal Opinion......................    13
  Auditors...........................    13
  Sponsors...........................    13
  Trustee............................    13
  Underwriters' and Sponsors'
    Profits..........................    14
  Public Distribution................    14
  Code of Ethics.....................    14
  Year 2000 Issues...................    14
Taxes................................    14
Supplemental Information.............    16
Financial Statements.................   D-1
</TABLE>

                                       2
<PAGE>
--------------------------------------------------------------------------------

RISK/RETURN SUMMARY

<TABLE>
<C>  <S>
 1.  WHAT IS THE FUND'S OBJECTIVE?
     The Fund seeks interest income that is
     exempt from regular federal income taxes
     by investing in a fixed portfolio
     consisting primarily of municipal revenue
     bonds with an estimated average life of 5
     years.

 2.  WHAT ARE MUNICIPAL REVENUE BONDS?
     Municipal revenue bonds are bonds issued
     by states, municipalities and public
     authorities to finance the cost of
     buying, building or improving various
     projects intended to generate revenue,
     such as airports, health care facilities,
     housing and municipal electric, water and
     sewer utilities. Generally, payments on
     these bonds depend solely on the revenues
     generated by the projects, excise taxes
     or state appropriations, and are not
     backed by the government's taxing power.

 3.  WHAT IS THE FUND'S INVESTMENT STRATEGY?

  -  The Fund plans to hold to maturity 9
     intermediate term tax-exempt municipal
     bonds with a current aggregate face
     amount of $7,240,000.
  -  The Fund is a unit investment trust which
     means that, unlike a mutual fund, the
     Fund's portfolio is not managed.
  -  When the bonds were initially deposited
     (April 21, 1995), they were rated A or
     better by Standard & Poor's, Moody's or
     Fitch, or in the opinion of the agent for
     the Sponsors had similar credit quality
     to bonds rated A or better. THE CREDIT
     QUALITY OF THE BONDS MAY CURRENTLY BE
     LOWER.
  -  Many of the bonds can be called at a
     premium declining over time to par value.
     Some bonds may be called earlier at par
     for extraordinary reasons.
  -  18% of the bonds are backed by bank
     letters of credit.
  -  11% of the bonds are insured by insurance
     companies.

     Letters of credit and insurance guarantee
     timely payments of principal and interest
     on the bonds (but not Fund units or the
     market value of the bonds before they
     mature).

     The Portfolio consists of municipal bonds
     of the following types:
</TABLE>

<TABLE>
  -  Financial Institutions                   38%
<C>  <S>
  -  Housing                                   9%
  -  Industrial Development Revenue          18%
  -  Lease Rental                             20%
  -  Miscellaneous                             1%
  -  Refunded Bonds                          14%
</TABLE>

<TABLE>
<C>  <S>
 4.  WHAT ARE THE SIGNIFICANT RISKS?

     YOU CAN LOSE MONEY BY INVESTING IN THE FUND.
     THIS CAN HAPPEN FOR VARIOUS REASONS,
     INCLUDING:
  -  Rising interest rates, an issuer's worsening
     financial condition or a drop in bond
     ratings can reduce the price of your units.
  -  Because the Fund is concentrated in
     financial institution bonds, adverse
     developments in this sector may affect the
     value of your units.
  -  Assuming no changes in interest rates, when
     you sell your units, they will generally be
     worth less than your cost because your cost
     included a sales fee.
  -  The Fund will receive early returns of
     principal if bonds are called or sold before
     they mature. If this happens your income
     will decline and you may not be able to
     reinvest the money you receive at as high a
     yield or as long a maturity.

 5.  IS THIS FUND APPROPRIATE FOR YOU?

     Yes, if you want monthly income free from
     regular federal income tax. You will benefit
     from a professionally selected and
     supervised portfolio whose risk is reduced
     by investing in bonds of several different
     issuers.
     The Fund is NOT appropriate for you if you
     want a speculative investment that changes
     to take advantage of market movements, if
     you do not want a tax-advantaged investment,
     if you are subject to AMT or if you cannot
     tolerate any risk.
</TABLE>

                                       3
<PAGE>

<TABLE>
<C>  <S>
     DEFINING YOUR INCOME
</TABLE>

<TABLE>
<C>  <S>                              <C>
     WHAT YOU MAY EXPECT (PAYABLE ON
     THE 25TH DAY OF EACH MONTH):
     Regular Monthly Income per unit   $ 4.59
     Annual Income per unit            $55.15
     RECORD DAY: 10th day of each
     month

     THESE FIGURES ARE ESTIMATES ON THE
     EVALUATION DATE; ACTUAL PAYMENTS MAY
     VARY.
</TABLE>

<TABLE>
<C>  <S>
 6.  WHAT ARE THE FUND'S FEES AND EXPENSES?

     This table shows the costs and expenses you may pay,
     directly or indirectly, when you invest in the Fund.

     INVESTOR FEES

     Maximum Sales Fee (Load) on ne
     purchases (as a percentage of
     $1,000 invested)                            2.75%

     Employees of some of the Sponsors and their affiliates
     may be charged a reduced sales fee of no less than
     $5.00 per Unit.

     The maximum sales fee is reduced if you invest at
     least $100,000, as follows:
</TABLE>

<TABLE>
<CAPTION>
                               YOUR MAXIMUM
                                SALES FEE
          IF YOU INVEST:         WILL BE:
          --------------       ------------
<C>  <S>                       <C>
     Less than $100,000            2.75%
     $100,000 to $249,999          2.50%
     $250,000 to $499,999          2.25%
     $500,000 to $999,999          2.00%
     $1,000,000 and over           1.75%

     Maximum Exchange Fee          1.75%
</TABLE>

<TABLE>
                                                   $      0.69
     Trustee's Fee
                                                   $      0.55
     Portfolio Supervision,
     Bookkeeping and
     Administrative Fees
     (including updating
     expenses)
<CAPTION>
     ESTIMATED ANNUAL FUND OPERATING EXPENSES
                                                     AMOUNT
                                                    PER UNIT
                                                    --------
<C>  <S>                                           <C>
                                                   $      0.18
     Evaluator's Fee
                                                   $      0.35
     Other Operating Expenses
                                                   -----------
                                                   $      1.77
     TOTAL
</TABLE>

<TABLE>
<C>  <S>
     The Sponsors historically paid updating
     expenses.

 7.  HOW HAVE SIMILAR FUNDS PERFORMED IN THE PAST?

     IN THE FOLLOWING CHART WE SHOW PAST PERFORMANCE
     OF PRIOR INTERMEDIATE SERIES, WHICH HAD THE
     SAME INVESTMENT OBJECTIVES, STRATEGIES AND
     TYPES OF BONDS AS THIS FUND. These prior
     Intermediate Series were offered after 1987 and
     were outstanding on March 31, 2000. OF COURSE,
     PAST PERFORMANCE OF PRIOR SERIES IS NO
     GUARANTEE OF FUTURE RESULTS OF THIS FUND.

     AVERAGE ANNUAL COMPOUND TOTAL RETURNS
     FOR PRIOR SERIES
     REFLECTING ALL EXPENSES. FOR PERIODS ENDED
     3/31/00.
</TABLE>

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

<TABLE>
 High                    6.27%     5.24%     5.85%     6.49%     6.16%     6.36%
 <S>                    <C>       <C>       <C>       <C>       <C>       <C>
 Average                 -0.24      4.50      5.60      1.66      5.31      6.11
 Low                     -5.87      2.96      5.37     -3.23      3.63      5.87
</TABLE>

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

<TABLE>
 <S>                    <C>       <C>       <C>       <C>       <C>       <C>
 Average
 Sales fee               1.94%     4.02%     4.99%
</TABLE>

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

Note: All returns represent changes in unit price with distributions reinvested
into the Municipal Fund Investment Accumulation Program.

<TABLE>
<C>  <S>
 8.  IS THE FUND MANAGED?

     Unlike a mutual fund, the Fund is not managed and
     bonds are not sold because of market changes. Rather,
     experienced Defined Asset Funds financial analysts
     regularly review the bonds in the Fund. The Fund may
     sell a bond if certain adverse credit or other
     conditions exist.

 9.  HOW DO I BUY UNITS?

     The minimum investment is one unit.

     You can buy units from any of the Sponsors and other
     broker-dealers. The Sponsors are listed later in this
     prospectus. Some banks may offer units for sale
     through special arrangements with the Sponsors,
     although certain legal restrictions may apply.
</TABLE>

                                       4
<PAGE>
<TABLE>
<C>  <S>
     UNIT PRICE PER UNIT               $1,030.35
     (as of March 31, 2000)

     Unit price is based on the net asset value of the Fund
     plus the sales fee. An amount equal to any principal
     cash, as well as net accrued but undistributed
     interest on the unit, is added to the unit price. An
     independent evaluator prices the bonds at 3:30 p.m.
     Eastern time every business day. Unit price changes
     every day with changes in the prices of the bonds in
     the Fund.

10.  HOW DO I SELL UNITS?

     You may sell your units at any time to any Sponsor or
     the Trustee for the net asset value determined at the
     close of business on the date of sale. You will not
     pay any other fee when you sell your units.

11.  HOW ARE DISTRIBUTIONS MADE AND TAXED?

     The Fund pays income monthly. In the opinion of bond
     counsel when each bond was issued, interest on the
     bonds in this Fund is generally 100% exempt from
     regular federal income tax.
     Interest on approximately 39% of the bonds will be
     taken into account in determining your preference
     items for alternative minimum tax purposes. A portion
     of the income may also be exempt from state and local
     personal income taxes, depending on where you live.

     You will also receive principal payments if bonds are
     sold or called or mature, when the cash available is
     more than $5.00 per unit. You will be subject to tax
     on any gain realized by the Fund on the disposition of
     bonds.

12.  WHAT OTHER SERVICES ARE AVAILABLE?

     REINVESTMENT
     You will receive your monthly income in cash unless
     you choose to compound your income by reinvesting with
     no sales fee in the Municipal Fund Investment
     Accumulation Program, Inc. This program is an open-end
     mutual fund with a comparable investment objective.
     Income from this program will generally be subject to
     state and local income taxes. FOR MORE COMPLETE
     INFORMATION ABOUT THE PROGRAM, INCLUDING CHARGES AND
     FEES, ASK THE TRUSTEE FOR THE PROGRAM'S PROSPECTUS.
     READ IT CAREFULLY BEFORE YOU INVEST. THE TRUSTEE MUST
     RECEIVE YOUR WRITTEN ELECTION TO REINVEST AT LEAST 10
     DAYS BEFORE THE RECORD DAY OF AN INCOME PAYMENT.

     EXCHANGE PRIVILEGES
     You may exchange units of this Fund for units of
     certain other Defined Asset Funds. You may also
     exchange into this Fund from certain other funds. We
     charge a reduced sales fee on exchanges.
</TABLE>

                                       5
<PAGE>
--------------------------------------------------------------------------------
    TAX-FREE VS. TAXABLE INCOME: A COMPARISON OF TAXABLE AND TAX-FREE YIELDS

<TABLE>
                                      EFFECTIVE
TAXABLE INCOME 2000*                  % TAX                                  TAX-FREE YIELD OF
  SINGLE RETURN      JOINT RETURN     BRACKET      3%        3.5%        4%        4.5%        5%        5.5%        6%
                                                                    IS EQUIVALENT TO A TAXABLE YIELD OF
<S>                <C>                <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
---------------------------------------------------------------------------------------------------------------------------
$      0- 26,250   $      0- 43,850    15.00       3.53       4.12       4.71       5.29       5.88       6.47       7.06
---------------------------------------------------------------------------------------------------------------------------
$ 26,251- 63,550   $ 43,851-105,950    28.00       4.17       4.86       5.56       6.25       6.94       7.64       8.33
---------------------------------------------------------------------------------------------------------------------------
$ 63,551-132,600   $105,951-161,450    31.00       4.35       5.07       5.80       6.52       7.25       7.97       8.70
---------------------------------------------------------------------------------------------------------------------------
<S>                <C>                <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
$132,601-288,350   $161,451-288,350    36.00       4.69       5.47       6.25       7.03       7.81       8.59       9.38
---------------------------------------------------------------------------------------------------------------------------
<S>                <C>                <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
  OVER $288,350    OVER $288,350       39.60       4.97       5.79       6.62       7.45       8.28       9.11       9.93
---------------------------------------------------------------------------------------------------------------------------
<S>                <C>                <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>

<S>                <C>
TAXABLE INCOME 20
  SINGLE RETURN     6.5%
                      IS
                   EQUIVALENT
                     TO A
                   TAXABLE
                   YIELD OF
-----------------
$      0- 26,250     7.65
-----------------
$ 26,251- 63,550     9.03
-----------------
$ 63,551-132,600     9.42
                   --------
-----------------
$132,601-288,350    10.16
                   --------
-----------------
  OVER $288,350     10.76
                   --------
-----------------
</TABLE>

To compare the yield of a taxable security with the yield of a federally
tax-free security, find your taxable income and read across. The table
incorporates 2000 federal income tax rates and assumes that all income would
otherwise be taxed at a U.S. investor's highest tax rate. Yield figures are for
example only.

*Based upon net amount subject to federal income tax after deductions and
exemptions. This table does not reflect the possible effect of other tax
factors, such as alternative minimum tax, personal exemptions, the phase-out of
exemptions, itemized deductions, the possible partial disallowance of deductions
or state and local taxation. Consequently, investors are urged to consult their
own tax advisers in this regard.

                MUNICIPAL BONDS AND THE ALTERNATIVE MINIMUM TAX

<TABLE>
       INCOME+             MAXIMUM "PREFERENCE" INCOME
                              WITHOUT TRIGGERING AMT
                             (STATE INCOME TAX RATES)
SINGLE ++   JOINT ++        0%          7%         11%
<S>         <C>         <C>         <C>         <C>
----------------------------------------------------------
            $50,000      $20,000     $15,000     $13,000
----------------------------------------------------------
$30,000                  $19,000     $16,000     $14,000
----------------------------------------------------------
            $100,000     $24,000     $15,000     $11,000
----------------------------------------------------------
$55,000                  $21,000     $16,000     $13,000
----------------------------------------------------------
            $225,000     $30,000     $12,000     $ 3,000
----------------------------------------------------------
$205,000                 $30,000     $14,000     $ 6,000
----------------------------------------------------------
</TABLE>

NOTES:
 + Regular taxable income plus state income taxes
   and personal exemptions.
 ++ Assuming no dependents.
Under federal tax law, interest income on certain municipal bonds, although
exempt from regular income tax, is treated as a "preference" item for purposes
of AMT. The table above shows amounts of such municipal bond "preference"
interest income, assuming no other "preference" or similar items apply, that
individual taxpayers could receive in 2000 without becoming subject to the AMT.
The table gives information for single and joint returns of U.S. individuals
having no dependents. The table provides three income levels and three
hypothetical state income tax rates. The table further assumes that the stated
amount of municipal bond "preference" interest income is subject to state income
taxes.

                                       6
<PAGE>
WHAT YOU CAN EXPECT FROM YOUR INVESTMENT

MONTHLY INCOME

The Fund will pay you regular monthly income. Your monthly income may vary
because of:
  - elimination of one or more bonds from the Fund's portfolio because of calls,
    redemptions or sales;
  - a change in the Fund's expenses; or
  - the failure by a bond's issuer to pay interest.

Changes in interest rates generally will not affect your monthly income because
the portfolio is fixed.

Along with your monthly income, you will receive your share of any available
bond principal.

RETURN FIGURES

We cannot predict your actual return, which will vary with unit price, how long
you hold your investment and changes in the portfolio, interest income and
expenses.

ESTIMATED CURRENT RETURN equals the estimated annual cash to be received from
the bonds in the Fund less estimated annual Fund expenses, divided by the Unit
Price (including the maximum sales fee):

<TABLE>
<S>              <C>  <C>
Estimated Annual         Estimated
Interest Income   -   Annual Expenses
-------------------------------------
             Unit Price
</TABLE>

ESTIMATED LONG TERM RETURN is a measure of the estimated return over the
estimated life of the Fund. Unlike Estimated Current Return, Estimated Long Term
Return reflects maturities, discounts and premiums of the bonds in the Fund. It
is an average of the yields to maturity (or in certain cases, to an earlier call
date) of the individual bonds in the portfolio, adjusted to reflect the Fund's
maximum sales fee and estimated expenses. We calculate the average yield for the
portfolio by weighting each bond's yield by its market value and the time
remaining to the call or maturity date.

Yields on individual bonds depend on many factors including general conditions
of the bond markets, the size of a particular offering and the maturity and
quality rating of the particular issues. Yields can vary among bonds with
similar maturities, coupons and ratings.

These return quotations are designed to be comparative rather than predictive.

RECORDS AND REPORTS

You will receive:
- a monthly statement of income payments and any principal payments;
- a notice from the Trustee when new bonds are deposited in exchange or
  substitution for bonds originally deposited;
- an annual report on Fund activity; and
- annual tax information. THIS WILL ALSO BE SENT TO THE IRS. YOU MUST REPORT THE
  AMOUNT OF TAX-EXEMPT INTEREST RECEIVED DURING THE YEAR.

You may request:
- copies of bond evaluations to enable you to comply with federal and state tax
  reporting requirements; and
- audited financial statements of the Fund.

You may inspect records of Fund transactions at the Trustee's office during
regular business hours.

                                       7
<PAGE>
THE RISKS YOU FACE

INTEREST RATE RISK

Investing involves risks, including the risk that your investment will decline
in value if interest rates rise. Generally, bonds with longer maturities will
change in value more than bonds with shorter maturities. Bonds in the Fund are
more likely to be called when interest rates decline. This would result in early
returns of principal to you and may result in early termination of the Fund. Of
course, we cannot predict how interest rates may change.

CALL RISK

Many bonds can be prepaid or "called" by the issuer before their stated
maturity. For example, some bonds may be required to be called pursuant to
mandatory sinking fund provisions.

Also, an issuer might call its bonds during periods of falling interest rates,
if the issuer's bonds have a coupon higher than current market rates.

An issuer might call its bonds in extraordinary cases, including if:
  - it no longer needs the money for the original purpose;
  - the project is condemned or sold;
  - the project is destroyed and insurance proceeds are used to redeem the
    bonds;
  - any related credit support expires and is not replaced; or
  - interest on the bonds become taxable.

If the bonds are called, your income will decline and you may not be able to
reinvest the money you receive at as high a yield or as long a maturity. An
early call at par of a premium bond will reduce your return.

REDUCED DIVERSIFICATION RISK

If many investors sell their units, the Fund will have to sell bonds. This could
reduce the diversification of your investment and increase your share of Fund
expenses.

LIQUIDITY RISK

The bonds will generally trade in the over-the-counter market. We cannot assure
you that a liquid trading market will exist, especially since current law may
restrict the Fund from selling bonds to any Sponsor. The value of the bonds, and
of your investment, may be reduced if trading in bonds is limited or absent.

CONCENTRATION RISK

When a certain type of bond makes up 25% or more of the portfolio, the Fund is
said to be "concentrated" in that bond type, which makes the Fund less
diversified.

Here is what you should know about the Fund's concentration in bonds of
financial institutions.

The profitability of a financial institution depends to a great extent on the
credit quality of its loan portfolio, which is affected by:
  - the institution's underwriting criteria;
  - Concentrations within its loan portfolio; and
  - general economic conditions.

A financial institution's operating performance is also impacted by:
  - changes in interest rates;
  - availability and cost of funds;
  - intensity of competition; and
  - degree of government regulation.

                                       8
<PAGE>
Changes to the portfolio from bond redemptions, maturities and sales may affect
the Fund's concentration over time.

BOND QUALITY RISK

A reduction in a bond's rating may decrease its value and, indirectly, the value
of your investment in the Fund.

INSURANCE RELATED RISK

Some bonds may be backed by insurance companies (as shown under Portfolio).
Insurance policies generally make payments only according to a bond's original
payment schedule and do not make early payments when a bond defaults or becomes
taxable. Although the federal government does not regulate the insurance
business, various state laws and federal initiatives and tax law changes could
significantly affect the insurance business. The claims-paying ability of the
insurance companies is generally rated A or better by Standard & Poor's or
another nationally recognized rating organization. The insurance company ratings
are subject to change at any time at the discretion of the rating agencies.

LITIGATION AND LEGISLATION RISKS

We do not know of any pending litigation that might have a material adverse
effect upon the Fund.

Future tax legislation could affect the value of the portfolio by:
  - limiting real property taxes,
  - reducing tax rates,
  - imposing a flat or other form of tax, or
  - exempting investment income from tax.

SELLING OR EXCHANGING UNITS

You can sell your units at any time for a price based on net asset value. Your
net asset value is calculated each business day by:
  - ADDING the value of the bonds, net accrued interest, cash and any other Fund
    assets;
  - SUBTRACTING accrued but unpaid Fund expenses, unreimbursed Trustee advances,
    cash held to buy back units or for distribution to investors and any other
    Fund liabilities; and
  - DIVIDING the result by the number of outstanding units.

Your net asset value when you sell may be more or less than your cost because of
sales fees, market movements and changes in the portfolio.

SPONSORS' SECONDARY MARKET

While we are not obligated to do so, we will buy back units at net asset value
without any other fee or charge. We may resell the units to other buyers or to
the Trustee. You should consult your financial professional for current market
prices to determine if other broker-dealers or banks are offering higher prices.

We have maintained a secondary market continuously for over 28 years, but we
could discontinue it without prior notice for any business reason.

SELLING UNITS TO THE TRUSTEE

Regardless of whether we maintain a secondary market, you can sell your units to
the Trustee at any time by sending the Trustee a letter (with any outstanding
certificates if you hold unit certificates). You must properly endorse your
certificates (or execute a written transfer instrument with signatures
guaranteed by an eligible institution). Sometimes, additional documents are
needed such as a trust

                                       9
<PAGE>
document, certificate of corporate authority, certificate of death or
appointment as executor, administrator or guardian.

Within seven days after your request and the necessary documents are received,
the Trustee will mail a check to you. Contact the Trustee for additional
information.

As long as we are maintaining a secondary market, the Trustee will sell your
units to us at a price based on net asset value. If there is no secondary
market, the Trustee may sell your units in the over-the-counter market for a
higher price, but it is not obligated to do so. In that case, you will receive
the net proceeds of the sale.

If the Fund does not have cash available to pay you for units you are selling,
the agent for the Sponsors will select bonds to be sold. Bonds will be selected
based on market and credit factors. These sales could be made at times when the
bonds would not otherwise be sold and may result in your receiving less than the
unit par value and also reduce the size and diversity of the Fund.

There could be a delay in paying you for your units:
  - if the New York Stock Exchange is closed (other than customary weekend and
    holiday closings);
  - if the SEC determines that trading on the New York Stock Exchange is
    restricted or that an emergency exists making sale or evaluation of the
    bonds not reasonably practicable; and
  - for any other period permitted by SEC order.

EXCHANGE OPTION

You may exchange units of certain Defined Asset Funds for units of this Fund at
a maximum exchange fee of 1.75%. You may exchange units of this Fund for units
of certain other funds at a reduced sales fee if your investment goals change.
To exchange units, you should talk to your financial professional about what
funds are exchangeable, suitable and currently available.

Normally, an exchange is taxable and you must recognize any gain or loss on the
exchange. However, the IRS may try to disallow a loss if the portfolios of the
two funds are not materially different; you should consult your own tax adviser.

We may amend or terminate this exchange option at any time without notice.

HOW THE FUND WORKS

PRICING

The price of a unit includes interest accrued on the bonds, less expenses, from
the most recent Record Day up to, but not including, the settlement date, which
is usually three business days after the purchase date of the unit.

A portion of the price of a unit consists of cash so that the Trustee can
provide you with regular monthly income. When you sell your units you will
receive your share of this cash.

EVALUATIONS

An independent Evaluator values the bonds on each business day (excluding
Saturdays, Sundays and the following holidays as observed by the New York Stock
Exchange: New Year's Day, Presidents' Day, Martin Luther King, Jr. Day, Good
Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving and Christmas).
Bond values are based on current bid or offer prices for the bonds or comparable
bonds.

                                       10
<PAGE>
In the past, the difference between bid and offer prices of publicly offered
tax-exempt bonds has ranged from 0.5% of face amount on actively traded issues
to 3.5% on inactively traded issues; the difference has averaged between 1 and
2%.

INCOME

The Trustee credits interest to an Income Account and other receipts to a
Capital Account. The Trustee may establish a Reserve Account by withdrawing from
these accounts amounts it considers appropriate to pay any material liability.
These accounts do not bear interest.

EXPENSES

The Trustee is paid monthly. It also benefits when it holds cash for the Fund in
non-interest bearing accounts. The Trustee may also receive additional amounts:
  - to reimburse the Trustee for the Fund's operating expenses;
  - for extraordinary services and costs of indemnifying the Trustee and the
    Sponsors;
  - costs of actions taken to protect the Fund and other legal fees and
    expenses;
  - expenses for keeping the Fund's registration statement current; and
  - Fund termination expenses and any governmental charges.

The Sponsors are currently reimbursed up to 55 CENTS per $1,000 face amount
annually for providing portfolio supervisory, bookkeeping and administrative
services and for any other expenses properly chargeable to the Fund. Legal,
typesetting, electronic filing and regulatory filing fees and expenses
associated with updating the Portfolio's registration statement yearly are also
now chargeable to the Portfolio. While this fee may exceed the amount of these
costs and expenses attributable to this Fund, the total of these fees for all
Series of Defined Asset Funds will not exceed the aggregate amount attributable
to all of these Series for any calendar year. The Fund also pays the Evaluator's
fees.

The Trustee's, Sponsors' and Evaluator's fees may be adjusted for inflation
without investors' approval.

The Sponsors will pay advertising and selling expenses at no charge to the Fund.
If Fund expenses exceed initial estimates, the Fund will owe the excess. The
Trustee has a lien on Fund assets to secure reimbursement of Fund expenses and
may sell bonds if cash is not available.

PORTFOLIO CHANGES

The Sponsors and Trustee are not liable for any default or defect in a bond.

Unlike a mutual fund, the portfolio is designed to remain intact and we may keep
bonds in the portfolio even if their credit quality declines or other adverse
financial circumstances occur. However, we may sell a bond in certain cases if
we believe that certain adverse credit conditions exist or if a bond becomes
taxable.

If we maintain a secondary market in units but are unable to sell the units that
we buy in the secondary market, we will redeem units, which may affect the
composition of the portfolio. Units offered in the secondary market may not
represent the same face amount of bonds that they did originally.

We decide whether or not to offer units for sale that we acquire in the
secondary market after reviewing:
  - diversity of the portfolio;

                                       11
<PAGE>
  - size of the Fund relative to its original size;
  - ratio of Fund expenses to income;
  - current and long-term returns;
  - degree to which units may be selling at a premium over par; and
  - cost of maintaining a current prospectus.

FUND TERMINATION

The Fund will terminate following the stated maturity or sale of the last bond
in the portfolio. The Fund may also terminate earlier with the consent of
investors holding 51% of the units or if total assets of the Fund have fallen
below 40% of the face amount of bonds deposited. We will decide whether to
terminate the Fund early based on the same factors used in deciding whether or
not to offer units in the secondary market.

When the Fund is about to terminate you will receive a notice, and you will be
unable to sell your units after that time. On or shortly before termination, we
will sell any remaining bonds, and you will receive your final distribution. Any
bond that cannot be sold at a reasonable price may continue to be held by the
Trustee in a liquidating trust pending its final sale.

You will pay your share of the expenses associated with termination, including
brokerage costs in selling bonds. This may reduce the amount you receive as your
final distribution.

CERTIFICATES

Certificates for units are issued on request. You may transfer certificates by
complying with the requirements for redeeming certificates, described above. You
can replace lost or mutilated certificates by delivering satisfactory indemnity
and paying the associated costs.

TRUST INDENTURE

The Fund is a "unit investment trust" governed by a Trust Indenture, a contract
among the Sponsors, the Trustee and the Evaluator, which sets forth their duties
and obligations and your rights. A copy of the Indenture is available to you on
request to the Trustee. The following summarizes certain provisions of the
Indenture.

The Sponsors and the Trustee may amend the Indenture without your consent:
  - to cure ambiguities;
  - to correct or supplement any defective or inconsistent provision;
  - to make any amendment required by any governmental agency; or
  - to make other changes determined not to be materially adverse to your best
    interest (as determined by the Sponsors).

Investors holding 51% of the units may amend the Indenture. Every investor must
consent to any amendment that changes the 51% requirement. No amendment may
reduce your interest in the Fund without your written consent.

The Trustee may resign by notifying the Sponsors. The Sponsors may remove the
Trustee without your consent if:
  - it fails to perform its duties and the Sponsors determine that its
    replacement is in your best interest; or
  - it becomes incapable of acting or bankrupt or its affairs are taken over by
    public authorities.

Investors holding 51% of the units may remove the Trustee. The Evaluator may
resign or be removed by the Sponsors and

                                       12
<PAGE>
the Trustee without the consent of investors. The resignation or removal of
either becomes effective when a successor accepts appointment. The Sponsors will
try to appoint a successor promptly; however, if no successor has accepted
within 30 days after notice of resignation, the resigning Trustee or Evaluator
may petition a court to appoint a successor.

Any Sponsor may resign as long as one Sponsor with a net worth of $2 million
remains and agrees to the resignation. The remaining Sponsors and the Trustee
may appoint a replacement. If there is only one Sponsor and it fails to perform
its duties or becomes bankrupt the Trustee may:
  - remove it and appoint a replacement Sponsor;
  - liquidate the Fund; or
  - continue to act as Trustee without a Sponsor.

Merrill Lynch, Pierce, Fenner & Smith Incorporated acts as agent for the
Sponsors.

The Trust Indenture contains customary provisions limiting the liability of the
Trustee, the Sponsors and the Evaluator.

LEGAL OPINION

Davis Polk & Wardwell, 450 Lexington Avenue, New York, New York 10017, as
special counsel for the Sponsors, has given an opinion that the units are
validly issued.

AUDITORS

Deloitte & Touche LLP, 2 World Financial Center, New York, New York 10281,
independent accountants, audited the Statement of Condition included in this
prospectus.

SPONSORS

The Sponsors are:
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED (a wholly-owned subsidiary of
Merrill Lynch & Co., Inc.)
P.O. Box 9051,
Princeton, NJ 08543-9051
SALOMON SMITH BARNEY INC. (an indirectly wholly-owned subsidiary of Citigroup
Inc.)
388 Greenwich Street--23rd Floor,
New York, NY 10013
DEAN WITTER REYNOLDS INC. (a principal operating subsidiary of Morgan Stanley
Dean Witter & Co.)
Two World Trade Center--59th Floor,
New York, NY 10048
PRUDENTIAL SECURITIES INCORPORATED (an indirect wholly-owned subsidiary of the
Prudential Insurance Company of America)
One New York Plaza
New York, NY 10292
PAINEWEBBER INCORPORATED (a wholly-owned subsidiary of PaineWebber Group Inc.)
1285 Avenue of the Americas,
New York, NY 10019

Each Sponsor is a Delaware corporation and it, or its predecessor, has acted as
sponsor to many unit investment trusts. As a registered broker-dealer each
Sponsor buys and sells securities (including investment company shares) for
others (including investment companies) and participates as an underwriter in
various selling groups.

TRUSTEE

The Chase Manhattan Bank, Unit Investment Trust Department, 4 New York
Plaza--6th Floor, New York, New York 10004, is the Trustee. It is supervised by
the Federal Deposit Insurance Corporation, the Board of Governors of the Federal
Reserve

                                       13
<PAGE>
System and New York State banking authorities.

UNDERWRITERS' AND SPONSORS' PROFITS

Underwriters receive sales charges when they sell units. The Sponsors also
realized a profit or loss on the initial deposit of the bonds. Any cash made
available by you to the Sponsors before the settlement date for those units may
be used in the Sponsors' businesses to the extent permitted by federal law and
may benefit the Sponsors.

A Sponsor or Underwriter may realize profits or sustain losses on bonds in the
Fund which were acquired from underwriting syndicates of which it was a member.

In maintaining a secondary market, the Sponsors will also realize profits or
sustain losses in the amount of any difference between the prices at which they
buy units and the prices at which they resell or redeem them.

PUBLIC DISTRIBUTION

The Sponsors do not intend to qualify units for sale in any foreign countries.
This prospectus does not constitute an offer to sell units in any country where
units cannot lawfully be sold.

CODE OF ETHICS

The Fund and the Agent for the Sponsors have each adopted a code of ethics
requiring reporting of personal securities transactions by its employees with
access to information on Fund transactions. Subject to certain conditions, the
codes permit employees to invest in Fund securities for their own accounts. The
codes are designed to prevent fraud, deception and misconduct against the Fund
and to provide reasonable standards of conduct. These codes are on file with the
Commission and you may obtain a copy by contacting the Commission at the address
listed on the back cover of this prospectus.

YEAR 2000 ISSUES

Many computer systems were designed in such a way that they may be unable to
distinguish between the year 2000 and the year 1900 (commonly known as the "Year
2000 Problem"). To date we are not aware of any major operational difficulties
resulting from the computer system changes necessary to prepare for the Year
2000. However, there can be no assurance that the Year 2000 Problem will not
adversely affect the issuers of the bonds contained in the Portfolio. We cannot
predict whether any impact will be material to the Fund as a whole.

TAXES

The following summary describes some of the important income tax consequences of
holding units. It assumes that you are not a dealer, financial institution,
insurance company or other investor with special circumstances or subject to
special rules. You should consult your own tax adviser about your particular
circumstances.

At the date of issue of each bond, counsel for the issuer delivered an opinion
to the effect that interest on the bond is exempt from regular federal income
tax. However, interest may be subject to state and local taxes and may be taken
into account in determining your preference items for alternative minimum tax
purposes. Neither we nor our counsel have reviewed the issuance of the bonds,
related proceedings or the basis for the opinions of counsel for

                                       14
<PAGE>
the issuers. We cannot assure you that the issuers (or other users of bond
proceeds) have complied or will comply with any requirements necessary for a
bond to be tax-exempt. If any of the bonds were determined not to be tax-exempt,
you could be required to pay income tax for current and prior years, and if the
Fund were to sell the bond, it might have to sell it at a substantial discount.

In the opinion of our counsel, under existing law:

GENERAL TREATMENT OF THE FUND AND YOUR INVESTMENT

The Fund will not be taxed as a corporation for federal income tax purposes, and
you will be considered to own directly your share of each bond in the Fund.

GAIN OR LOSS UPON DISPOSITION

When all or part of your share of a bond is disposed of (for example, when the
Fund sells, exchanges or redeems a bond or when you sell or exchange your
units), you will generally recognize capital gain or loss. Your gain, however,
will generally be ordinary income to the extent of any accrued "market
discount". Generally you will have market discount to the extent that your basis
in a bond when you purchase a unit is less than its stated redemption price at
maturity (or, if it is an original issue discount bond, the issue price
increased by original issue discount that has accrued on the bond before your
purchase). You should consult your tax adviser in this regard.

If your net long-term capital gains exceed your net short-term capital losses,
the excess may be subject to tax at a lower rate than ordinary income. Any
capital gain from the Fund will be long-term if you are considered to have held
your investment on each bond for more than one year and short-term otherwise.
Because the deductibility of capital losses is subject to limitations, you may
not be able to deduct all of your capital losses. Consult your tax adviser in
this regard.

YOUR BASIS IN THE BONDS

Your aggregate basis in the bonds will be equal to the cost of your units,
including any sales charges you pay, adjusted to reflect any accruals of
"original issue discount," "acquisition premium" and "bond premium". You should
consult your tax adviser in this regard.

EXPENSES

If you are not a corporate investor, you will not be entitled to a deduction for
your share of fees and expenses of the Fund. Also, if you borrowed money in
order to purchase or carry your units, you will not be able to deduct the
interest on this borrowing for federal income tax purposes. The IRS may treat
your purchase of units as made with borrowed money even if the money is not
directly traceable to the purchase of units.

NEW YORK TAXES

Under the income tax laws of the State and City of New York, the Fund will not
be taxed as a corporation. If you are a New York taxpayer, your income from the
Fund will not be tax-exempt in New York except to the extent that the income is
earned on bonds that are tax-exempt for New York purposes. Depending on where
you live, your income from the Fund may be subject to state and local taxation.
You should consult your tax adviser in this regard.

                                       15
<PAGE>
SUPPLEMENTAL INFORMATION

You can receive at no cost supplemental information about the Fund by calling
the Trustee. The supplemental information includes more detailed risk disclosure
about the types of bonds that may be in the Fund's portfolio, general risk
disclosure concerning any insurance securing certain bonds, and general
information about the structure and operation of the Fund. The supplemental
information is also available from the SEC.

                                       16
<PAGE>

MUNICIPAL INVESTMENT TRUST FUND,
INTERMEDIATE TERM SERIES - 252,
DEFINED ASSET FUNDS

REPORT OF INDEPENDENT ACCOUNTANTS

The Sponsors, Trustee and Holders
of Municipal Investment Trust Fund,
Intermediate Term Series - 252, Defined Asset Funds:

We have audited the accompanying statement of condition of
Municipal Investment Trust Fund, Intermediate Term Series - 252,
Defined Asset Funds, including the portfolio, as of March 31,
2000 and the related statements of operations and of changes in
net assets for the years ended March 31, 2000, 1999 and 1998.
These financial statements are the responsibility of the
Trustee. Our responsibility is to express an opinion on these
financial statements based on our audits.

We conducted our audits in accordance with  auditing standards
generally accepted in the United States of America. 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. Securities owned at March 31, 2000,
as shown in such portfolio, were confirmed to us by The Chase
Manhattan Bank, the Trustee. An audit also includes assessing
the accounting principles used and significant estimates made
by the Trustee, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a
reasonable basis for our opinion.

In our opinion, the financial statements referred to above
present fairly, in all material respects, the financial
position of Municipal Investment Trust Fund, Intermediate Term
Series - 252, Defined Asset Funds at March 31, 2000 and the
results of its operations and changes in its net assets for the
above-stated years in accordance with accounting principles
generally accepted in the United States of America.


DELOITTE & TOUCHE LLP

New York, N.Y.
May 24, 2000


                                     D - 1
<PAGE>

MUNICIPAL INVESTMENT TRUST FUND,
INTERMEDIATE TERM SERIES - 252,
DEFINED ASSET FUNDS


STATEMENT OF CONDITION
As of March 31, 2000

<TABLE>
     <S>                                                                               <C>              <C>
     TRUST PROPERTY:
       Investment in marketable securities
          at value (cost $ 7,183,647)(Note 1) .........                                                 $ 7,371,690
       Accrued interest................................                                                     104,747
       Cash - principal ...............................                                                       5,269
                                                                                                      -------------
         Total trust property .........................                                                   7,481,706

     LESS LIABILITIES:
       Income advance from Trustee.....................                                $    14,122
       Accrued Sponsors' fees .........................                                      1,011           15,133
                                                                                     -------------    -------------

     NET ASSETS, REPRESENTED BY:
       7,321 units of fractional undivided
          interest outstanding (Note 3) ...............                                  7,376,959

       Undistributed net investment income ............                                     89,614      $ 7,466,573
                                                                                     -------------    =============

     UNIT VALUE ($ 7,466,573 / 7,321 units)............                                                 $  1,019.88
                                                                                                      =============
</TABLE>

                       See Notes to Financial Statements.


                                     D - 2
<PAGE>

MUNICIPAL INVESTMENT TRUST FUND,
INTERMEDIATE TERM SERIES - 252,
DEFINED ASSET FUNDS

STATEMENTS OF OPERATIONS

<TABLE>
<CAPTION>

                                                                  Years Ended March 31,
                                                          2000            1999            1998
                                                          ----            ----            ----
      <S>                                          <C>              <C>               <C>
     INVESTMENT INCOME:

       Interest income ........................    $   438,472      $   475,851       $   519,072
       Trustee's fees and expenses ............         (9,188)          (9,359)          (10,763)
       Sponsors' fees .........................         (4,147)          (3,862)           (4,134)
                                                   ----------------------------------------------
       Net investment income ..................        425,137          462,630           504,175
                                                   ----------------------------------------------

     REALIZED AND UNREALIZED GAIN (LOSS)
       ON INVESTMENTS:
       Realized gain on
         securities sold or redeemed ..........         49,364           47,221            64,971
       Unrealized appreciation (depreciation)
         of investments .......................       (372,196)           9,674           366,413
                                                   ----------------------------------------------
       Net realized and unrealized
         gain (loss) on investments ...........       (322,832)          56,895           431,384
                                                   ----------------------------------------------

     NET INCREASE IN NET ASSETS
       RESULTING FROM OPERATIONS ..............    $   102,305      $   519,525       $   935,559
                                                   ==============================================
</TABLE>

                       See Notes to Financial Statements.


                                     D - 3
<PAGE>

MUNICIPAL INVESTMENT TRUST FUND,
INTERMEDIATE TERM SERIES - 252,
DEFINED ASSET FUNDS

STATEMENTS OF CHANGES IN NET ASSETS

<TABLE>
<CAPTION>

                                                                  Years Ended March 31,
                                                          2000            1999            1998
                                                          ----            ----            ----
      <S>                                          <C>              <C>               <C>
     OPERATIONS:
       Net investment income ..................    $   425,137      $   462,630       $   504,175
       Realized gain on
         securities sold or redeemed ..........         49,364           47,221            64,971
       Unrealized appreciation (depreciation)
         of investments .......................       (372,196)           9,674           366,413
                                                   ----------------------------------------------
       Net increase in net assets
         resulting from operations ............        102,305          519,525           935,559
                                                   ----------------------------------------------
     DISTRIBUTIONS TO HOLDERS (Note 2):
       Income  ................................       (425,297)        (463,155)         (505,327)
       Principal ..............................        (10,765)         (25,563)          (21,176)
                                                   ----------------------------------------------
       Total distributions ....................       (436,062)        (488,718)         (526,503)
                                                   ----------------------------------------------
     SHARE TRANSACTIONS:
       Redemption amounts - income ............        (10,164)          (5,438)          (11,895)
       Redemption amounts - principal .........       (871,432)        (519,693)       (1,084,985)
                                                   ----------------------------------------------
       Total share transactions ...............       (881,596)        (525,131)       (1,096,880)
                                                   ----------------------------------------------

     NET DECREASE IN NET ASSETS ...............     (1,215,353)        (494,324)         (687,824)

     NET ASSETS AT BEGINNING OF YEAR ..........      8,681,926        9,176,250         9,864,074
                                                   ----------------------------------------------
     NET ASSETS AT END OF YEAR ................    $ 7,466,573      $ 8,681,926       $ 9,176,250
                                                   ==============================================
     PER UNIT:
       Income distributions during
         year .................................    $     54.91      $     54.74       $     54.82
                                                   ==============================================
       Principal distributions during
         year .................................    $      1.43      $      3.04       $      2.37
                                                   ==============================================
       Net asset value at end of
         year .................................    $  1,019.88      $  1,061.75       $  1,058.39
                                                   ==============================================
     TRUST UNITS:
       Redeemed during year ...................            856              493             1,051
       Outstanding at end of year .............          7,321            8,177             8,670
                                                   ==============================================
</TABLE>

                       See Notes to Financial Statements.


                                     D - 4
<PAGE>

MUNICIPAL INVESTMENT TRUST FUND,
INTERMEDIATE TERM SERIES - 252,
DEFINED ASSET FUNDS

NOTES TO FINANCIAL STATEMENTS

      1.    SIGNIFICANT ACCOUNTING POLICIES

            The Fund is registered under the Investment Company Act of 1940 as a
            Unit Investment Trust. The following is a summary of significant
            accounting policies consistently followed by the Fund in the
            preparation of its financial statements. The policies are in
            accordance with accounting principles generally accepted in the
            United States of America.

            (A)   Securities are stated at value as determined by the Evaluator
                  based on bid side evaluations for the securities.

            (B)   The Fund is not subject to income taxes. Accordingly, no
                  provision for such taxes is required.

            (C)   Interest income is recorded as earned.


      2.    DISTRIBUTIONS

            A distribution of net investment income is made to Holders each
            month. Receipts other than interest, after deductions for
            redemptions and applicable expenses, are also distributed
            periodically.

      3.    NET CAPITAL

<TABLE>
     <S>                                                                                                <C>

          Cost of 7,321 units at Date of Deposit .....................                                  $ 7,530,432
          Less sales charge ..........................................                                      301,185
                                                                                                         -----------
          Net amount applicable to Holders ...........................                                    7,229,247
          Redemptions of units - net cost of 5,874 units redeemed
            less redemption amounts (principal).......................                                     (195,349)
          Realized gain on securities sold or redeemed ...............                                      227,886
          Principal distributions ....................................                                      (72,868)
          Net unrealized appreciation of investments..................                                      188,043
                                                                                                         -----------

          Net capital applicable to Holders ..........................                                  $ 7,376,959
                                                                                                         ===========
</TABLE>

      4.    INCOME TAXES

            As of March 31, 2000, net unrealized appreciation of investments,
            based on cost for Federal income tax purposes, aggregated $188,043,
            of which $11,867 related to depreciated securities and $199,910
            related to appreciated securities. The cost of investment securities
            for Federal income tax purposes was $7,183,647 at March 31, 2000.


                                     D - 5
<PAGE>

MUNICIPAL INVESTMENT TRUST FUND,
INTERMEDIATE TERM SERIES - 252,
DEFINED ASSET FUNDS

PORTFOLIO
As of March 31, 2000

<TABLE>
<CAPTION>
                                               Rating                                             Optional
     Portfolio No. and Title of                  of         Face                                 Redemption
            Securities                       Issues(1)      Amount    Coupon       Maturities(3) Provisions(3)    Cost      Value(2)
            ----------                       ---------   ----------- -----------   -----------   ------------  ----------  ---------

<S>                                            <C>      <C>            <C>          <C>          <C>        <C>         <C>
  1  Arkansas Dev. Fin. Auth., Econ. Dev.      A-       $   100,000    5.900  %     2004         04/01/03   $   101,033 $   100,706
     Rev. Bonds (Vinyl Bldg. Products, Inc.                                                      @ 101.000
     Proj.), Ser. 1995 G (AMT) (5)

  2  Housing  Auth. of the City of Miami       A            310,000    6.100        2003         None           312,815     311,082
     Beach, FL, First Mtge. Elderly Hsg.
     Rev. Rfdg. Bonds, Ser. 1995 (Sec. 8
     Asstd. - Rebecca Towers North)
                                                            330,000    6.150        2004         None           333,290     330,261


  3  Iowa Stud. Loan Liquidity Corp., Stud.    Aaa(m)     1,465,000    5.750        2006         12/01/02     1,465,000   1,494,241
     Loan Rev. Bonds, 1993 Sr. Ser. B (AMT)                                                      @ 102.000
     (5)

  4  Missouri State Reg. Conv. and Sports      Aa(f)        355,000    5.100        2006         08/15/03       335,961     354,102
     Complex Auth., Conv. and Sports Fac.                                                        @ 102.000
     Proj. and Rfdg. Bonds, Ser. A 1993

  5  New England Educ. Loan Marketing          Aa2(m)     1,000,000    5.625        2004         None           991,070   1,016,310
     Corp., MA, Stud. Loan Rev. Rfdg. Bonds,
     1993 Ser. F (AMT) (5)
                                                            285,000    5.700        2005         None           281,723     291,974


  6  New York State Urban Dev. Corp., Corr.    A            260,000    5.250        2007         01/01/04       241,683     259,103
     Cap. Fac. Rev. Bonds, Ser. 4                                                                @ 102.000

  7  Puerto Rico Mun. Fin. Agy., 1992          A-         1,000,000    5.875        2006(4)      07/01/02     1,000,000   1,046,910
     Ser. A Bonds                                                                                @ 102.000
</TABLE>


                                     D - 6
<PAGE>

MUNICIPAL INVESTMENT TRUST FUND,
INTERMEDIATE TERM SERIES - 252,
DEFINED ASSET FUNDS

PORTFOLIO
As of March 31, 2000

<TABLE>
<CAPTION>
                                               Rating                                             Optional
     Portfolio No. and Title of                  of         Face                                 Redemption
            Securities                       Issues(1)      Amount     Coupon      Maturities(3) Provisions(3)    Cost      Value(2)
            ----------                       ---------   ----------- -----------   -----------   ------------  ----------  ---------

<S>                                          <C>        <C>         <C>           <C>          <C>          <C>         <C>
  8  State of Ohio (Ohio Bldg. Auth.),         AAA      $   810,000    4.900  %     2007         04/01/03   $   761,060 $   806,209
     Workers' Comp. Facs. Bonds (William                                                         @ 102.000
     Green Bldg.), 1993 Ser. A (MBIA Ins.)(7)

  9  The Econ. Dev. Corp. of the Cnty. of      A            570,000    6.450        2006         03/01/05       585,624     578,846
     Ottawa, MI, Econ. Dev. Ltd. Oblig.                                                          @ 102.000
     Rfdg. Rev. Bonds (Sunset Manor, Prog.
     Inc.), Ser. 1995 A (Letter of Credit -
     Old Kent Bank, Jonesville, MI.) (6)
                                                            755,000    6.350        2005         None           774,388     781,946

                                                          ---------                                           ---------   ---------
                                                        $ 7,240,000                                         $ 7,183,647 $ 7,371,690
                                                          =========                                           =========   =========
</TABLE>

                             See Notes to Portfolio.


                                     D - 7
<PAGE>

MUNICIPAL INVESTMENT TRUST FUND,
INTERMEDIATE TERM SERIES - 252,
DEFINED ASSET FUNDS

NOTES TO PORTFOLIO
As of March 31, 2000

      (1)   The ratings are of the bonds themselves by Standard & Poor's Ratings
            Group, or by Moody's Investors Service, Inc. if followed by "(m)",
            or by Fitch Investors Service, Inc. if followed by "(f)"; "(a)"
            indicates that it is a rating of the outstanding debt obligations of
            the institution providing the letter of credit or guarantee; "(b)"
            indicates that while there is no such available rating, in the
            opinion of Defined Asset Funds research analysts, the bond has
            credit characteristics comparable to bonds rated "A" or better;
            ("c") indicates that while there is no such available rating, in the
            opinion of Defined Asset Funds research analysts, the bond does not
            have credit characteristics comparable to bonds rated "A" or better.
            These ratings have been furnished by the Evaluator but not confirmed
            with the rating agencies.

      (2)   See Notes to Financial Statements.

      (3)   Optional redemption provisions, which may be exercised in whole or
            in part, are initially at prices of par plus a premium, then
            subsequently at prices declining to par. Certain securities may
            provide for redemption at par prior or in addition to any optional
            or mandatory redemption dates or maturity, for example, through the
            operation of a maintenance and replacement fund, if proceeds are not
            able to be used as contemplated, the project is condemned or sold or
            the project is destroyed and insurance proceeds are used to redeem
            the securities. Many of the securities are also subject to mandatory
            sinking fund redemption commencing on dates which may be prior to
            the date on which securities may be optionally redeemed. Sinking
            fund redemptions are at par and redeem only part of the issue. Some
            of the securities have mandatory sinking funds which contain
            optional provisions permitting the issuer to increase the principal
            amount of securities called on a mandatory redemption date. The
            sinking fund redemptions with optional provisions may, and optional
            refunding redemptions generally will, occur at times when the
            redeemed securities have an offering side evaluation which
            represents a premium over par. To the extent that the securities
            were acquired at a price higher than the redemption price, this will
            represent a loss of capital when compared with the Public Offering
            Price of the Units when acquired. 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 Holders any principal amount and premium received on
            such redemption after satisfying any redemption requests for Units
            received by the Fund. The estimated current return may be affected
            by redemptions.

      (4)   Bonds with an aggregate face amount of $1,000,000 have been
            pre-refunded and are expected to be called for redemption on the
            optional redemption provision dates shown.

      (5)   Securities that are tax preference items for purposes of the
            Alternative Minimum Tax are indicated by "(AMT)".

      (6)   Certain bonds are covered by letters of credit which may expire
            prior to the maturity dates of the bonds. Upon expiration of a
            letter of credit, the issuer of the bond is obligated to obtain a
            replacement letter of credit or call the bond.

      (7)   Insured by the indicated municipal bond insurance company.


                                     D - 8
<PAGE>
DEFINED ASSET FUNDS--REGISTERED TRADEMARK--

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<S>                                      <C>
HAVE QUESTIONS ?                         MUNICIPAL INVESTMENT TRUST FUND
Request the most recent free             INTERMEDIATE TERM SERIES--252
Information Supplement                   (A Unit Investment Trust)
that gives more details about            ---------------------------------------
the Fund, by calling:                    This Prospectus does not contain
The Chase Manhattan Bank                 complete information about the
1-800-323-1508                           investment company filed with the
                                         Securities and Exchange Commission in
                                         Washington, D.C. under the:
                                         - Securities Act of 1933 (file no.
                                         33-58009) and
                                         - Investment Company Act of 1940 (file
                                         no. 811-1777).
                                         TO OBTAIN COPIES AT PRESCRIBED RATES--
                                         WRITE: Public Reference Section of the
                                         Commission
                                         450 Fifth Street, N.W., Washington,
                                         D.C. 20549-6009
                                         CALL: 1-800-SEC-0330.
                                         VISIT: http://www.sec.gov.
                                         ---------------------------------------
                                         No person is authorized to give any
                                         information or representations about
                                         this Fund not contained in this
                                         Prospectus or the Information
                                         Supplement, and you should not rely on
                                         any other information.
                                         ---------------------------------------
                                         When units of this Fund are no longer
                                         available, this Prospectus may be used
                                         as a preliminary prospectus for a
                                         future series, but some of the
                                         information in this Prospectus will be
                                         changed for that series.
                                         UNITS OF ANY FUTURE SERIES MAY NOT BE
                                         SOLD NOR MAY OFFERS TO BUY BE ACCEPTED
                                         UNTIL THAT SERIES HAS BECOME EFFECTIVE
                                         WITH THE SECURITIES AND EXCHANGE
                                         COMMISSION. NO UNITS CAN BE SOLD IN ANY
                                         STATE WHERE A SALE WOULD BE ILLEGAL.
                                                                     15096--6/00
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