CALVERT MUNICIPAL FUND INC
N-14, 1998-01-07
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                                                                Page 1 of _____

                                                        SEC Registration Nos.
                                                        811 -6525 and 33 -44968
                                                     


                    U.S. SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N -14


REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933


                          Calvert Municipal Fund, Inc.
               (Exact Name of Registrant as Specified in Charter)
                 Calvert National Municipal Intermediate Fund


                             4550 Montgomery Avenue
                                  Suite 1000N
                            Bethesda, Maryland 20814
                    (Address of Principal Executive Offices)

                 Registrant's Telephone Number: (301) 951 -4800

                           William M. Tartikoff, Esq.
                             4550 Montgomery Avenue
                                  Suite 1000N
                            Bethesda, Maryland 20814
                    (Name and Address of Agent for Service)



It is proposed that this filing will become effective on February 6, 1998 
pursuant to Rule 488.

No filing fee is due for Registrant because of reliance on Section 24(f).


<PAGE>

                        Form N -14 Cross Reference Sheet

Information Required in the Prospectus

        1.        Cover Page
        2.         Table of Contents
        3.         Synopsis; Fund Expenses
        4.         Synopsis; Reasons for the Reorganization; Proposed
                  Transaction; Tax Consequences; Information about the
                  Reorganization; Comparative Information on Shareholder
                  Rights; Information about the Funds
        5.         Synopsis; Comparison of Investment Policies; Information
                  about the Funds; Investment  Objectives and Policies;
                  Advisory Fees; Distribution Fees and Expense Ratios;
                  Purchases; Exchange Privileges; Distribution Procedures;
                  Redemption Procedures; Prospectus and Statement of
                  Additional Information of the Calvert National Municipal
                  Intermediate Fund (incorporated by reference)
        6.          Synopsis; Comparison of Investment Policies; Information
                  about the Funds; Investment Objectives and Policies;
                  Advisory Fees, Distribution Fees and Expense Ratios;
                  Purchases; Exchange Privileges; Distribution Procedures;
                  Redemption Procedures, Joint Prospectus and Statement of
                  Additional Information of the Calvert Arizona Municipal
                  Intermediate Fund, Calvert Florida Municipal Intermediate
                  Fund, Calvert Michigan Municipal Intermediate Fund, Calvert
                  New York Municipal Intermediate Fund and Calvert
                  Pennsylvania Municipal Intermediate Fund (incorporated by
                  reference)
        7.        Voting Information; Adjournment
        8.        Inapplicable
        9.        Inapplicable

 Information Required in Statement of Additional Information

        10.       Cover Page
        11.       Table of Contents
        12.       Additional Information about the Registrant
        13.       Inapplicable
        14.       Financial Statements

 Other Information

        15.       Indemnification
        16.       Exhibits
        17.       Undertakings

<PAGE>



                                [letterhead]

                                  [DATE]

Dear Shareholder,

I am writing to inform you of the upcoming joint special meeting of
shareholders of each Calvert Arizona Municipal Intermediate Fund, Calvert
Florida Municipal Intermediate Fund, Calvert Michigan Municipal
Intermediate Fund, Calvert New York Municipal Intermediate Fund and
Calvert Pennsylvania Municipal Intermediate Fund, and to request that you
take a few minutes to read the enclosed material and mail back the proxy
voting card.

You are being asked to vote on a proposal to merge your Fund into the
Calvert National Municipal Intermediate Fund. The Trustees/Directors of
your Fund, including myself, believe this change is in the Funds' and
your best interest.

In considering the small sizes of the Funds, it is believed that
combining the Funds into one larger fund would allow the assets to be
more efficiently managed and lead to a reduction in expenses as well as
enhanced returns. Accordingly, such a combination would be beneficial to
shareholders. Of course, if the mergers are approved and the transactions
consummated, distributions of the combined Calvert National Municipal
Intermediate Fund will not be exempt from state-specific income tax.

Regardless of the number of shares you own, it is important that you take
the time to read the enclosed proxy, and complete and mail your voting card 
as soon as you can. A postage paid envelope is enclosed. If Fund shareholders 
do not return their proxies, the Funds may have to incur the expense of
additional solicitations. All shareholders benefit from the speedy return
of proxies.

I appreciate the time you will take to review this important matter. The
Q&A which follows will assist you in understanding the proposal, however, 
if we may be of any assistance, please call us at (800) 368-2750.

Sincerely,


Barbara J. Krumsiek
President


<PAGE>


                     The Calvert Municipal Fund, Inc.
                Calvert Arizona Municipal Intermediate Fund
               Calvert Michigan Municipal Intermediate Fund
               Calvert New York Municipal Intermediate Fund
             Calvert Pennsylvania Municipal Intermediate Fund

              First Variable Rate Fund for Government Income
                Calvert Florida Municipal Intermediate Fund

                   4550 Montgomery Avenue - Suite 1000N
                         Bethesda, Maryland 20814


              NOTICE OF JOINT SPECIAL MEETING OF SHAREHOLDERS
                       To be held on April __, 1998

NOTICE IS HEREBY GIVEN that a Joint Special Meeting of Shareholders of
the Calvert Arizona Municipal Intermediate Fund, Calvert Michigan
Municipal Intermediate Fund, Calvert New York Municipal Intermediate Fund
and Calvert Pennsylvania Municipal Intermediate Fund, each a series of
the Calvert Municipal Fund, Inc. and the Calvert Florida Municipal
Intermediate Fund, a series of the First Variable Rate Fund for
Government Income, will be held in the Tenth Floor Conference Room of
Calvert Group, Ltd., Air Rights North Tower, 4550 Montgomery Avenue,
Suite 1000N, Bethesda, Maryland at 10:00 a.m. on [DAY], April __, 1998,
for the following purposes:

I.     To consider and act on an Agreement and Plan of Reorganization,
       dated [DATE], providing for the transfer of substantially all of
       the assets of each Calvert Arizona Municipal Intermediate Fund,
       Calvert Florida Municipal Intermediate Fund, Calvert Michigan
       Municipal Intermediate Fund, Calvert New York Municipal
       Intermediate Fund and Calvert Pennsylvania Municipal Intermediate
       Fund (collectively, the "Funds") to and the assumption of certain
       identified liabilities of the Funds by the Calvert National
       Municipal Intermediate Fund, a series of the Calvert Municipal
       Fund, Inc., in exchange for shares of the Calvert National
       Municipal Intermediate Fund.
 
II.    To transact any other business that may properly come before the
       meeting or any adjournment or adjournments thereof.

Shareholders of record at the close of business on [RECORD DATE] are
entitled to notice of and to vote at this meeting or any adjournment
thereof.

By Order of the Directors,



William M. Tartikoff, Esq.
Secretary

[DATE]


Please execute the enclosed proxy and return it promptly in the enclosed
envelope, thus enabling the Funds to avoid unnecessary expense and delay.
Your vote is extremely important, no matter how large or small your
holdings may be. No postage is required if mailed in the United States.
The proxy is revocable and will not affect your right to vote in person
if you attend the Special Meeting.


<PAGE>

                            IMPORTANT NOTICE TO
               CALVERT ARIZONA MUNICIPAL INTERMEDIATE FUND,
               CALVERT FLORIDA MUNICIPAL INTERMEDIATE FUND,
               CALVERT MICHIGAN MUNICIPAL INTERMEDIATE FUND,
             CALVERT NEW YORK MUNICIPAL INTERMEDIATE FUND AND
       CALVERT PENNSYLVANIA MUNICIPAL INTERMEDIATE FUND SHAREHOLDERS

                            QUESTIONS & ANSWERS

Please read the complete text of the enclosed Prospectus/Proxy Statement.
For your convenience, we have provided a brief overview of the matters to
be voted upon. Your vote is important. If you have any questions
regarding the proposal, please call us at 800-368-2745. We appreciate you
investing with Calvert Group, and look forward to a continuing
relationship.


Q.     Why am I receiving a proxy statement?

A.     The Calvert Municipal Fund, Inc.  is seeking your approval of a
       merger of the shares of its series - the Calvert Arizona Municipal
       Intermediate Fund, Calvert Michigan Municipal Intermediate Fund,
       Calvert New York Municipal Intermediate Fund and Calvert
       Pennsylvania Municipal Intermediate Fund and the First Variable
       Rate Fund for Government Income is seeking your approval of a
       merger of the shares of its series, the Calvert Florida Municipal
       Intermediate Fund (hereafter, together the "State Municipal
       Funds"), into the Calvert National Municipal Intermediate Fund,
       another series of the Calvert Municipal Fund, Inc.  (hereafter,
       the "National Municipal Fund").

Q.     What are the effects of this merger?

A.     The merger will affect the State Municipal Funds in that all of
       the assets of the State Municipal Funds will be transferred to the
       National Municipal Fund. In turn, you will receive shares of the
       National Municipal Fund.

       Through the merger, the surviving National Municipal Fund is
       expected to allow the assets of the State Municipal Funds to be
       more efficiently managed so as to reduce expenses and enhance
       returns while continuing to be managed under similar investment
       objectives and policies.

Q.     Is there a change in the management of these funds?

A.     No. Calvert Asset Management Company, Inc. will continue to manage
       the portfolio of the National Municipal Fund just as it has
       managed the State Municipal Funds to date.

Q.     Are there differences in the investment objective of the funds
       being merged?

A.     The State Municipal Funds' investment objective is to earn the
       highest level of interest income exempt from federal and specific
       state income taxes as is consistent with prudent investment
       management, preservation of capital, and the quality and maturity
       objectives of each Fund whereas the National Municipal Fund's
       investment objective is to seek to earn the highest level of
       interest income exempt from federal income taxes.

       Accordingly, the main difference between the investment objectives
       of the Funds is that the National Municipal Fund's goal is to seek
       interest income exempt from only federal income tax so that
       distributions of the combined National Municipal Fund will not be
       exempt from state-specific income tax.

Q.     How do the expense structures and fees of the funds compare? Is
       there a benefit to me?

A.     The Boards expect that the merger will allow the National
       Municipal Fund to achieve certain limited economies of scale from
       the combined asset size of the Funds and the potentially lower
       operating expenses even though the same expense structure and fees
       are in effect for each of the Funds.

Q.     What will be the name of the surviving fund after the mergers are
       complete?

A.     The Calvert National Municipal Intermediate Fund will be the fund
       to survive the merger.

Q.     What will be the size of the surviving fund after the merger?

A.     If the proposal presented in the proxy statement is approved, the
       combined National Municipal Fund is expected to have approximately
       [$_] million in assets.

Q.     What are the federal tax implications of the merger?

A.     The merger will not be a taxable event (i.e., no gain or loss will
       be recognized) to any Funds or to you as a shareholder of any of
       the Funds.

Q.     What if there are not enough votes to reach a quorum by the
       scheduled special shareholder meeting date?

A.     If enough shareholders do not vote, we will need to take further
       action. We may contact you by mail, telephone, facsimile, or by
       personal interview. Therefore, we encourage you to vote as soon as
       you review the enclosed proxy materials in order to avoid
       additional mailings, telephone calls or other solicitations.

Q.     If the proposal is not approved for a Fund, will Calvert propose
       liquidating that Fund?

A.     If the proposal to merge a Fund is not approved, the Board will
       consider other options such as liquidating that Fund.

Q.     How will you determine the number of shares of the National
       Municipal Fund that I will receive?

A.     The Closing Date is April __, 1998. As of 4:00 p.m. Eastern Time
       on the Closing Date, you will receive that number of full and
       fractional National Municipal Fund shares equal in value to the
       shares you hold in any of the State Municipal Funds on that date.

Q.     What impact will the merger have on the share price of Calvert
       National Municipal Intermediate Fund?

A.     The net asset value per share of the National Municipal Fund will
       not be changed by the merger.

Q.     Who is paying for expenses related to the shareholders meeting?

A.     Each of the State Municipal Funds will pay a pro rata share for
       those expenses relating to the shareholder meeting.

Q.     How do the directors of the State Municipal Funds suggest that I
       vote?

A.     After careful consideration, the directors of the State Municipal
       Funds unanimously recommend that you vote "FOR" the item proposed
       on the enclosed proxy card.

Q.     What are my other investment alternatives?

A.     Additional equity funds are available through Calvert Group by
       calling (800) 368-2748 for more information.

Q.     How do I vote my shares?

A.     You can vote your shares by completing and signing the enclosed
       proxy card, and mailing it in the enclosed postage paid envelope.
       If you need any assistance, or have any questions regarding the
       proposal or how to vote your shares, please call us at (800)
       368-2745.

Q.     Will my vote make a difference?

A.     Your vote is needed to ensure that the proposals can be acted
       upon. Your immediate response on the enclosed proxy card will help
       save on the costs of any further solicitations for a shareholder
       vote. We encourage all shareholders to participate in the
       governance of the State Municipal Funds.

Q.     How will this affect my account?

A.     You can expect the same level of management expertise and
       high-quality shareholder service you've grown accustomed to.

Q.     How do I sign the proxy card?

A.     Voting instruction forms must be executed properly. When forms are
       not signed as required by law, you and the Fund must undertake the
       time and expense to take steps to validate your vote. The
       following guide was prepared to help you choose the proper format
       for signing your form:

              1.   Individual Accounts: Your name should be signed exactly
         as it appears in the registration on the voting instruction form.

              2.   Joint Accounts: Either party may sign, but the name of
         the party signing should conform exactly to a name shown in the
         registration.

              3.   All other accounts should show the capacity of the
         individual signing. This can be shown either in the form of the
         account registration itself or by the individual executing the
         voting instruction form. For example:

         REGISTRATION                            VALID SIGNATURE

         A.
         1)    Save the Earth Corp.              Jane Q. Nature, Treasurer

         2)    Save the Earth Corp.              Jane Q. Nature, Treasurer
                 c/o Jane Q. Nature, Treasurer

         B.
         1)    Save the Earth Corp.              Jon B. Goodhealth, Trustee
                Profit Sharing Plan

         2)    Save the Earth Trust              Jon B. Goodhealth, Trustee

         3)    Jon B. Goodhealth, Trustee        Jon B. Goodhealth, Trustee
                 u/t/d 5/1/78

         C.
         1)     David Smith, Cust.                        David Smith
                       f/b/o Jason Smith UGMA


    Voting by mail is quick and easy. Everything you need is enclosed.


<PAGE>

                 PROSPECTUS AND PROXY STATEMENT - [DATE]

                     Acquisition of the assets of the
               Calvert Arizona Municipal Intermediate Fund,
               Calvert Florida Municipal Intermediate Fund,
               Calvert Michigan Municipal Intermediate Fund,
             Calvert New York Municipal Intermediate Fund and
             Calvert Pennsylvania Municipal Intermediate Fund
      By and in exchange for shares of the Calvert National Municipal
                             Intermediate Fund
     4550 Montgomery Avenue, Bethesda, Maryland 20814 - (800) 368-2745


This Prospectus and Proxy Statement relates to the proposed transfer of
all the assets and the assumption of certain identified
liabilities of the Calvert Arizona Municipal Intermediate Fund, Calvert
Florida Municipal Intermediate Fund, Calvert Michigan Municipal
Intermediate Fund, Calvert New York Municipal Intermediate Fund and
Calvert Pennsylvania Municipal Intermediate Fund (together, the "State
Municipal Funds") to the Calvert National Municipal Intermediate Fund
("National Municipal Fund") (collectively, "the Funds") in exchange for
shares of National Municipal Fund. Following the transfer, National
Municipal Fund shares will be distributed to shareholders of the State
Municipal Funds in liquidation of the State Municipal Funds, and the
State Municipal Funds will be dissolved. As a result of the proposed
transaction, each shareholder of the State Municipal Funds will receive
that number of National Municipal Fund shares equal in value at the date
of the exchange to the value of such shareholder's respective shares of
the State Municipal Funds. The transaction will occur for each State
Municipal Fund if shareholders vote in favor of the proposed transfer.

National  Municipal Fund is a series of the Calvert  Municipal  Fund,  Inc.
which is an  open-end  management  investment  company.  The net  assets of
National  Municipal  Fund were [$___] as of [RECORD  DATE].  Its investment
objective is to seek to earn the highest  level of interest  income  exempt
from  federal  income  taxes  as  is  consistent  with  prudent  investment
management,  preservation  of capital,  and the stated quality and maturity
characteristics.

Each  State  Municipal  Fund (with the  exception  of the  Calvert  Florida
Municipal  Intermediate  Fund) is a series of the Calvert  Municipal  Fund,
Inc.  while the Calvert  Florida  Municipal  Intermediate  Fund is a series
of  First  Variable  Rate  Fund for  Government  Income,  which  also is an
open-end  management  investment  company,  (together,  "Calvert").  As  of
[RECORD  DATE],   assets  of  the  Funds  were  [$_____]  for  the  Arizona
Municipal Fund,  [$_____] for the Florida Municipal Fund,  [$_____] for the
Michigan  Municipal  Fund,  [$_____]  for the New York  Municipal  Fund and
[$_____]for the  Pennsylvania  Municipal  Fund. The State Municipal  Funds'
have the same  investment  objective of the National  Municipal Fund to the
extent that they all seek interest  income exempt from federal  income tax;
however,  the National  Municipal Fund will not seek, and its  distributions
will not be, exempt from specific state income taxes.

The  National  Municipal  Fund and the State  Municipal  Funds  each have a
2.75%  maximum  sales  charge.  The sales  charge is added to the  purchase
price  of  shares,  but  will  not  be  applied  to  shares  issued  in the
reorganization  (see  "Purchase  Procedures").  Each  of  the  Funds  has a
distribution  plan that permits it to pay certain expenses  associated with
the  distribution of its shares.  Calvert Asset  Management  Company,  Inc.
("Advisor") is the investment  advisor for the National  Municipal Fund and
the State Municipal Funds.

This Prospectus and Proxy Statement is expected to be mailed to
shareholders of record on or about [DATE].

This Prospectus and Proxy Statement, which should be retained for future
reference, sets forth concisely the information about National Municipal
Fund that a prospective investor should know before investing. This
Prospectus and Proxy Statement is accompanied by the Prospectus of the
National Municipal Fund dated April 30, 1997 (insofar as it relates to
the National Municipal Fund) and is incorporated herein by reference. A
Statement of Additional Information dated April 30, 1997, containing
additional information, has been filed with the Securities and Exchange
Commission and is incorporated by reference into this Prospectus and
Proxy Statement. A copy of the Statement of Additional Information may be
obtained without charge by writing the Funds at 4550 Montgomery Avenue,
Suite 1000N, Bethesda, Maryland 20814, or by calling (800) 368-2748.

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 ON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION
TO THE CONTRARY IS A CRIMINAL OFFENSE.

THE SHARES OFFERED BY THIS PROSPECTUS AND PROXY STATEMENT ARE NOT
DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED BY, ANY BANK, AND
ARE NOT FEDERALLY INSURED OR OTHERWISE PROTECTED BY THE FDIC, THE FEDERAL
RESERVE BOARD, OR ANY OTHER AGENCY. WHEN INVESTORS SELL SHARES OF THE
FUNDS, THE VALUE MAY BE HIGHER OR LOWER THAN THE AMOUNT ORIGINALLY PAID.


                             TABLE OF CONTENTS
                                                                    PAGE
                Summary                                              __
                Reasons for the Reorganization                       __
                Expense Comparisons                                  __
                Financial Highlights                                 __
                Comparison of Investment Policies                    __
                Information about the Reorganization                 __
                Comparative Information on
                   Shareholder Rights                                __
                Information about the Funds                          __
                Voting Information                                   __
                Adjournment                                          __
                Exhibit A - Agreement and Plan
                   of Reorganization                                 __

<PAGE>

- ---------------------------------------------------------------------------
                                  SUMMARY
 ...........................................................................

Reasons for the Reorganization. The Boards of Trustees/Directors of the
Calvert Municipal Fund, Inc.  and the First Variable Rate Fund for
Government Income (both Boards' members are collectively referred to as
the "Directors") believe that the proposed Reorganization would be in the
best interests of the shareholders of the State Municipal Funds in
considering various issues connected with the small size of the
portfolios for each of the State Municipal Funds. By combining the Funds,
the assets of the State Municipal Funds could be more efficiently managed
so as to reduce expenses and enhance returns. Accordingly, it has been
determined that it would be beneficial to the State Municipal Funds'
shareholders to combine into a larger municipal fund portfolio with
relatively similar investment objectives and policies. The National
Municipal Fund has [#] times the net assets of each individual State
Municipal Fund. On [RECORD DATE], the National Municipal Fund had net
assets of $____ compared to the net assets of $____ for the Arizona
Municipal Fund, $____ for the Florida Municipal Fund, $____ for the
Michigan Municipal Fund, $____ for the New York Municipal Fund and $____
for the Pennsylvania Municipal Fund on that date.

To this end, the Directors recommend that shareholders of each State
Municipal Fund approve the proposed merger of their Fund into the
National Municipal Fund because all portfolios invest solely in municipal
obligations and are managed by the same portfolio manager. The National
Municipal Fund hopes to preserve the assets of the State Municipal Funds
while improving the economies of scale of each portfolio. See "Expense
Comparisons" below.

In determining whether to recommend approval of the Reorganization to
shareholders of the State Municipal Funds, the Directors considered a
number of factors, including, but not limited to: (i) the capabilities
and resources of the National Municipal Fund, the Advisor and other
service providers in the areas of investment, marketing, and shareholder
services; (ii) the expenses and advisory fees applicable to the State
Municipal Funds and the National Municipal Fund before the Reorganization
and the estimated expense ratios of the National Municipal Fund after the
Reorganization; (iii) the comparative investment performance of each
State Municipal Fund and the National Municipal Fund; (iv) the terms and
conditions of the Agreement and whether the Reorganization would result
in dilution of a State Municipal Fund's shareholder interests; (v) the
economies of scale potentially realizable through the combination of the
Funds; (vi) the identical service features available to shareholders of
the Funds; (vii) the costs estimated to be incurred to complete the
Reorganization; (viii) the future growth prospects of the State Municipal
Funds; and (ix) the anticipated tax consequences of the Reorganization.

In this regard, the Directors reviewed information provided by the
Advisor relating to the anticipated impact to the shareholders of the
State Municipal Funds as a result of the Reorganization. The Directors
considered the probability that the increase in asset levels of the
combined fund after the Reorganization is expected to result in reduced
per share expenses and achievement of economies of scale, although there
can, of course, be no assurances in this regard. Combining the net assets
of the State Municipal Funds with the assets of the National Municipal
Fund should lead to a modest reduction at first of total operating
expenses for shareholders of the State Municipal Funds on a per share
basis, by allowing fixed and relatively fixed costs, such as accounting,
legal and printing expenses, and service fees to be spread over a larger
asset base. Management anticipates that the reorganization would have a
de minimis yet similarly beneficial effect upon current shareholders of
the National Municipal Fund.

In evaluating the benefits of the proposed transaction, the Directors
also considered the effect of the loss of a portion of the capital loss
carryforwards that might be available to each of the State Municipal
Funds. Management has determined that the benefits of the proposed
reorganization outweigh the uncertain potential detriment resulting from
possible constraints in the use of capital loss carryforwards. See
"Information about the Reorganization."
 ...........................................................................

Proposed Transaction. The Directors have authorized the Funds to enter
into an Agreement and Plan of Reorganization (the "Agreement" or "Plan")
providing for the transfer of all the assets and certain identified
liabilities of the State Municipal Funds to National Municipal Fund in
exchange for like shares of National Municipal Fund. Following the
transfer, National Municipal Fund shares will be distributed to the
respective shareholders of the State Municipal Funds in liquidation of
each of the State Municipal Funds, and each of the State Municipal Funds
will be dissolved. As a result of the proposed transaction, each
shareholder of the State Municipal Funds will receive that number of full
and fractional National Municipal Fund shares equal in value at the date
of the exchange to the value of such shareholder's shares of the
respective State Municipal Fund. For the reasons stated above, the
Directors, including the independent Directors, have concluded that the
reorganization would be in the best interests of the shareholders of the
State Municipal Funds and recommend shareholder approval.
 ...........................................................................

Tax Consequences. The Plan is conditioned upon receipt by the State
Municipal Funds of an opinion of counsel that no gain or loss will be
recognized by the State Municipal Funds or the State Municipal Funds'
shareholders as a result of the reorganization. The tax basis of National
Municipal Fund shares received by a shareholder will be the same as the
tax basis of the shareholder's State Municipal Fund shares. In addition,
the tax basis of the State Municipal Funds' assets in the hands of
National Municipal Fund as a result of the reorganization will be the
same as the tax basis of such assets in the hands of the State Municipal
Funds prior to the reorganization. See "Information about the
Reorganization."
 ...........................................................................

Investment  Policies.  Shareholders  should  consider  the  differences  in
investment   policies  between  the  State  Municipal  Funds  and  National
Municipal  Fund.  While all of the Funds seek the highest level of interest
income  exempt from  federal  income  taxes as is  consistent  with prudent
investment  management,  preservation  of capital,  and the stated  quality
and  maturity   characteristics,   the  State  Municipal  Funds  also  seek
interest  income exempt from specific  state income taxes.  Thus, the focus
of each  investment  portfolio and the portfolio  composition  of each Fund
is  different,  and in fact,  the  resulting tax treatment may differ based
upon the extent that interest  dividends are no longer solely  derived from
earnings attributable to municipal obligations of a particular state.
 ...........................................................................

Purchases.  Shares of the State  Municipal  Funds  and  National  Municipal
Fund  are  sold  on  a  continuous  basis  at  net  asset  value  plus  the
appropriate  sales  charge  which  is  subject  to  reduction  by  right of
accumulation,  group  purchase,  and letter of intent.  Employee  purchases
and certain  plans  qualified  under the of the  Internal  Revenue  Code of
1986,  as amended (the "Code") may  purchase  shares with no sales  charge,
and all Fund  shareholders  may reinvest  dividends  without paying a sales
charge.  Shares  issued  in the  reorganization  will not be  assessed  any
sales charge.
 ...........................................................................

Sales  Charges.  The Funds'  shares are  offered at net asset  value plus a
front-end sales charge as follows:

Amount of                   As a % of     As a % of          Allowed to Dealers
Investment                  offering      net amount         as a % of offering
                            price         invested           price

Less than $50,000           2.75%            2.83%                 2.25%
$50,000 but less
than $100,000               2.25%            2.30%                 1.75%
$100,000 but less
than $250,000               1.75%            1.78%                 1.25%
$250,000 but less
than $500,000               1.25%            1.27%                 0.95%
$500,000 but less
than $1,000,000             1.00%            1.01%                 0.80%
$1,000,000 and over         0.00%            0.00%                 0.10%*

* Calvert Distributors, Inc. ("CDI") reserves the right to recoup any
portion of the amount paid to the dealer if the investor redeems some or
all of the shares form the Fund within twelve months of the time of
purchase.

The minimum initial investment in each fund is $2,000 and the minimum
subsequent investment is $250 (except in the case of certain retirement
plans).
 ...........................................................................

Exchange Privileges. Shareholders of the State Municipal Funds and
National Municipal Fund may exchange Fund shares for shares of a variety
of other Calvert Group Funds. Each such exchange represents a sale of
Fund shares, which may produce a gain or loss for tax purposes. There is
no additional charge for exchanges. Calvert Group discourages frequent
exchanges and may prohibit additional purchases of shares by persons who
have previously been advised that their frequent use of the exchange
privilege is inconsistent with the orderly management of the investment
portfolio. The State Municipal Funds and National Municipal Fund reserve
the right to modify or eliminate this exchange privilege with 60 days'
written notice.
 ...........................................................................

Distribution Procedures. The State Municipal Funds and National Municipal
Fund distribute dividends monthly and pay out their net realized capital
gains (if any) once each year. Shareholders of the Funds may reinvest
distributions. Your existing election in the State Municipal Funds with
respect to dividends and/or capital gains will be continued with respect
to the shares of National Municipal Fund you acquire in connection with
the reorganization unless you notify the Fund of a new election.
 ...........................................................................

Redemption Procedures. At any time and in any amount, shares of the State
Municipal Funds and National Municipal Fund may be redeemed by sending a
letter of instruction, including your name, account and Fund number, the
number of shares or dollar amount, and where you want the money to be
sent. This letter of instruction must be signed by all required
authorized signers. Further documentation may be required from
corporations, fiduciaries, pension plans and institutional investors.

Shares may also be redeemed by telephone or through brokers. The Funds
impose a charge of $5 for wire transfers of less than $1,000. The Funds
may, after 30 days' notice, close accounts if, due to redemptions, the
account falls below $1,000 and the balance is not brought up to the
required minimum amount.

- ---------------------------------------------------------------------------
                            EXPENSE COMPARISONS
 ...........................................................................

                                       National                  Arizona
                                       Municipal Fund            Municipal Fund
A.  Shareholder Transaction Costs
    Maximum Sales Charge on 
    Purchases                          2.75%                        2.75%
    (as a percentage of offering
    price)
    Contingent Deferred Sales Charge   None                          None

B.  Annual Fund Operating Expenses -
    Fiscal Year 1996
    (as a percentage of average net
    assets)
    Management Fees                    0.70%                        0.70%
    Rule 12b -1 Service and
    Distribution Fees                  0.00%                        0.00%
    Other Expenses                     0.  %                        0.  %
    Total Fund Operating Expenses*      ___%                         ___%

* Net Fund Operating Expenses after reduction for fees paid indirectly were:
             National ____%, Arizona ____%

                                         Florida                 Michigan
                                         Municipal Fund          Municipal Fund
A.  Shareholder Transaction Costs
    Maximum Sales Charge on Purchases        2.75%                 2.75%
    (as a percentage of offering price)
    Contingent Deferred Sales Charge         None                  None

B.  Annual Fund Operating 
    Expenses  - Fiscal Year 1996
    (as a percentage of average net
    assets)
    Management Fees                          0.70%                 0.70%
    Rule 12b -1 Service and
    Distribution Fees                        0.00%                 0.00%
    Other Expenses                           0.  %                 0.  %
    Total Fund Operating Expenses*           0.__%                 0.__%

* Net Fund Operating Expenses after reduction for fees paid indirectly were:
             Florida ____%, Michigan ____%


                                          New York          Pennsylvania
                                          Municipal Fund    Municipal Fund
A.  Shareholder Transaction Costs
    Maximum Sales Charge on Purchases     2.75%             2.75%
    (as a percentage of offering price)
    Contingent Deferred Sales Charge
                                          None              None

B.  Annual Fund Operating Expenses  -
    Fiscal Year 1996
    (as a percentage of average net
    assets)
    Management Fees                       0.70%             0.70%
    Rule 12b -1 Service and Distribution
    Fees                                  0.00%             0.00%
    Other Expenses                        0.  %             0.  %
    Total Fund Operating Expenses*        0.  %             0.__%

* Net Fund Operating Expenses after reduction for fees paid indirectly were:
             New York ____%, Pennsylvania ___%

                                             PRO FORMA
A.  Shareholder Transaction Costs
    Maximum Sales Charge on Purchases         2.75%
   (as a percentage of offering price)
    Contingent Deferred Sales Charge
                                              None

B.  Annual Fund Operating Expenses  -
    Fiscal Year 1996
    (as a percentage of average net assets)
    Management Fees                           0.70%
    Rule 12b -1 Service and Distribution
    Fees                                      0.00%
    Other Expenses                            0.__%
    Total Fund Operating Expenses             0.__%

C.       Example: You would pay the following expenses on a $1,000 investment,
assuming (1) 5% annual return; (2) redemption at the end of each period; and
(3) payment of maximum initial sales charge at time of purchase:

Fund                       1 Year   3 Years    5 Years     10 Years

National Municipal Fund    $__      $__        $__          $__

Arizona Municipal Fund     $__      $__        $__          $__

Florida Municipal Fund     $__      $__        $__          $__

Michigan Municipal Fund    $__      $__        $__          $__

New York Municipal Fund    $__      $__        $__          $__

Pennsylvania Municipal     $__      $__        $__          $__
Fund

PRO FORMA                  $__     $__         $__          $___

The example, which is hypothetical, should not be considered a
representation of past or future expenses. Actual expenses and return may
be higher or lower than those shown.

Explanation of Table: The purpose of the table is to assist you in
understanding the various costs and expenses that an investor in the
Funds may bear directly (shareholder transaction costs) or indirectly
(annual fund operating expenses).

A.     Shareholder Transaction Costs are charges you pay when you buy or
sell shares of your Fund.
 ...........................................................................

B.   Annual Fund Operating Expenses. Management Fees are paid by the
Funds to Calvert Asset Management Company, Inc. for managing the
investments and business affairs of each Fund and paid to Calvert
Administrative Services Company, Inc. The Funds will incur Other Expenses
for maintaining shareholder records, furnishing shareholder statements
and reports, and other services. Management Fees and Other Expenses have
already been reflected in the share price and are not charged directly to
individual shareholder accounts.

The Funds' Rule 12b-1 fees include an asset-based sales charge. Thus, it
is possible that long-term shareholders in the Funds may pay more in
total sales charges than the economic equivalent of the maximum front-end
sales charge permitted by rules of the National Association of Securities
Dealers, Inc. In addition to the compensation itemized above (sales
charge and Rule 12b-1 service and distribution fees), certain
broker/dealers and/or their salespersons may receive certain compensation
for the sale and distribution of the securities or for services to the
Funds.

Each Fund has adopted a Distribution Plan, which provides for payments,
which are limited to an annual rate of 0.15% for each Fund's first five
years of operation (and 0.25% thereafter) of the average daily net asset
value of Fund shares, to pay expenses associated with the distribution
and servicing of Fund shares. Amounts paid by the Funds to CDI under the
Distribution Plan are used to pay to dealers and others, including CDI
salespersons who service accounts, service fees, and to pay CDI for its
marketing and distribution expenses, including, but not limited to,
preparation of advertising and sales literature and the printing and
mailing of prospectuses to prospective investors. During the 1997 fiscal
period, the Funds paid no Distribution Plan expenses.

- ---------------------------------------------------------------------------
                           FINANCIAL HIGHLIGHTS
 ...........................................................................

The following table provides information about the Funds' financial
history. It expresses the information in terms of a single share
outstanding throughout the period. The table has been audited by Coopers
& Lybrand, L.L.P., independent accountants, whose report on the period
from the Funds' commencement of operations through December 31, 1997, is
included in the Annual Report to Shareholders for each of the respective
periods presented. The table should be read in conjunction with the
financial statements and their related notes. The Annual Report to
Shareholders is incorporated by reference into the Statement of
Additional Information.


<TABLE>
<CAPTION>
National Municipal Shares
Year Ended December 31,                           1997
<S>                                                <C>

Net asset value, beginning                       
Income from investment operations
     Net investment income                       
     Net realized and unrealized gain (loss)
         on investments                          
         Total from investment operations        

Distributions from
     Net investment income                       
     Net realized gains                          
         Total distributions                     

Total increase (decrease) in net asset value     

Net asset value, ending                          

Total return<F6>                                

Ratio to average net assets
     Net investment income                       
     Total expenses<F7>                          
     Net expenses                                
     Expenses reimbursed                         

Portfolio turnover                               

Net assets, ending (in thousands)                

Number of shares outstanding,
ending (in thousands)                            

<FN>
<F6>Total return does not reflect deduction of front-end sales charge.
<F7>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>

</TABLE>
<PAGE>

<TABLE>

<CAPTION>
National Municipal Shares
Year Ended December 31,                           1996
<S>                                                <C>

Net asset value, beginning                       $10.62
Income from investment operations
     Net investment income                       .50
     Net realized and unrealized gain (loss)
         on investments                          (.06)
         Total from investment operations         .44

Distributions from
     Net investment income                       (.50)
     Net realized gains                          --
         Total distributions                     (.50)

Total increase (decrease) in net asset value     (.06)

Net asset value, ending                          $10.56

Total return<F6>                                4.32%

Ratio to average net assets
     Net investment income                       4.83%
     Total expenses<F7>                          1.04%
     Net expenses                                1.01%
     Expenses reimbursed                         --

Portfolio turnover                               23%

Net assets, ending (in thousands)                $45,612

Number of shares outstanding,
ending (in thousands)                            4,319

<FN>
<F6>Total return does not reflect deduction of front-end sales charge.
<F7>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>

</TABLE>


<PAGE>


<TABLE>
<CAPTION>

National Municipal Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>
                 
Net asset value, beginning                       $9.81               $10.42
Income from investment operations
     Net investment income                       .51                 .50
     Net realized and unrealized gain (loss)
         on investments                          .80                 (.62)
         Total from investment operations        1.31                (.12)

Distributions from
     Net investment income                       (.50)               (.49)
     Net realized gains                          --                  --
         Total distributions                     (.50)               (.49)

Total increase (decrease) in net asset value     .81                 (.61)

Net asset value, ending                          $10.62              $9.81

Total return<F8>                                 13.64%              (1.18%)

Ratio to average net assets
     Net investment income                       4.97%               4.88%
     Total expenses<F9>                          .96%                --
     Net expenses                                .94%                .69%
     Expenses reimbursed                         --                  .32%

Portfolio turnover                               57%                 122%

Net assets, ending (in thousands)                $40,146             $36,159

Number of shares outstanding,
ending (in thousands)                            3,780               3,686

<FN>
<F8>Total return does not reflect deduction of front-end sales charge.
<F9>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>

</TABLE>


<PAGE>

<TABLE>
<CAPTION>
                                                                  From Inception
                                                 Year Ended     (Sept. 30, 1992)
                                                 December 31,   through Dec. 31,
National Municipal Shares                        1993                1992
<S>                                              <C>                 <C>   
Net asset value, beginning                       $10.01              $10.00
Income from investment operations
     Net investment income                       .48                 .13
     Net realized and unrealized gain (loss)
         on investments                          .45                 .01
         Total from investment operations        .93                 .14

Distributions from
     Net investment income                       (.48)               (.13)
     Net realized gains                          (.04)               --
         Total distributions                     (.52)               (.13)

Total increase (decrease) in net asset value     .41                 .01

Net asset value, ending                          $10.42              $10.01

Total return<F10>                                9.47%               5.40%

Ratio to average net assets
     Net investment income                       5.01%               5.36%(a)
     Total expenses<F11>                         --                  --
     Net expenses                                .10%                --
     Expenses reimbursed                         .45%                4.34%(a)

Portfolio turnover                               162%                12%

Net assets, ending (in thousands)                $37,467             $1,542

Number of shares outstanding,
ending (in thousands)                            3,596               154

(a) Annualized

<FN>
<F10>Total return does not reflect deduction of front-end sales charge.
<F11>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

Arizona Shares
Year Ended December 31,                          1997
<S>                                              <C>
Net asset value, beginning                      
Income from investment operations
     Net investment income                      
     Net realized and unrealized gain (loss)
         on investments                         
         Total from investment operations       

Distributions from
     Net investment income                      

Total increase (decrease) in net asset value    

Net asset value, ending                         

Total return<F18>                               

Ratio to average net assets
     Net investment income                      
     Total expenses<F19>                        
     Net expenses                               
     Expenses reimbursed                        

Portfolio turnover                              

Net assets, ending (in thousands)               

Number of shares outstanding,
ending (in thousands)                           

<FN>
<F18>Total return does not reflect deduction of front-end sales charge.
<F19>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

Arizona Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $5.07
Income from investment operations
     Net investment income                       .19
     Net realized and unrealized gain (loss)
         on investments                          (.03)
         Total from investment operations        .16

Distributions from
     Net investment income                       (.20)

Total increase (decrease) in net asset value     (.04)

Net asset value, ending                          $5.03

Total return<F18>                                3.17%

Ratio to average net assets
     Net investment income                       3.96%
     Total expenses<F19>                         1.31%
     Net expenses                                1.00%
     Expenses reimbursed                         .06%

Portfolio turnover                               18%

Net assets, ending (in thousands)                $2,635

Number of shares outstanding,
ending (in thousands)                            524

<FN>
<F18>Total return does not reflect deduction of front-end sales charge.
<F19>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>



<PAGE>

<TABLE>
<CAPTION>

Arizona Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $4.71               $5.00
Income from investment operations
     Net investment income                       .22                 .19
     Net realized and unrealized gain (loss)
         on investments                          .36                 (.29)
         Total from investment operations        .58                 (.10)

Distributions from
     Net investment income                       (.22)               (.19)

Total increase (decrease) in net asset value     .36                 (.29)

Net asset value, ending                          $5.07               $4.71

Total return<F20>                                12.44%              (1.84%)

Ratio to average net assets
     Net investment income                       4.43%               4.13%
     Total expenses<F21>                         .53%                --
     Net expenses                                .41%                .38%
     Expenses reimbursed                         .54%                .97%

Portfolio turnover                               10%                 22%

Net assets, ending (in thousands)                $2,045              $2,004

Number of shares outstanding,
ending (in thousands)                            403                 426

<FN>
<F20>Total return does not reflect deduction of front-end sales charge.
<F21>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>


Florida Shares
Year Ended December 31,                          1997
<S>                                              <C>
Net asset value, beginning                      
Income from investment operations
     Net investment income                      
     Net realized and unrealized gain (loss)
         on investments                         
         Total from investment operations       

Distributions from
     Net investment income                      

Total increase (decrease) in net asset value    

Net asset value, ending                         

Total return<F22>                               
Ratio to average net assets
     Net investment income                      
     Total expenses<F23>                        
     Net expenses                               
     Expenses reimbursed                        

Portfolio turnover                              

Net assets, ending (in thousands)               

Number of shares outstanding,
ending (in thousands)                           

<FN>
<F22>Total return does not reflect deduction of front-end sales charge.
<F23>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>
<PAGE>

<TABLE>
<CAPTION>


Florida Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $5.06
Income from investment operations
     Net investment income                       .21
     Net realized and unrealized gain (loss)
         on investments                          (.04)
         Total from investment operations        .17

Distributions from
     Net investment income                       (.21)

Total increase (decrease) in net asset value     (.04)

Net asset value, ending                          $5.02

Total return<F22>                                3.53%
Ratio to average net assets
     Net investment income                       4.28%
     Total expenses<F23>                         .94%
     Net expenses                                .81%
     Expenses reimbursed                         .01%

Portfolio turnover                               19%

Net assets, ending (in thousands)                $5,516

Number of shares outstanding,
ending (in thousands)                            1,098

<FN>
<F22>Total return does not reflect deduction of front-end sales charge.
<F23>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

Florida Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $4.67               $5.00
Income from investment operations
     Net investment income                       .24                 .21
     Net realized and unrealized gain (loss)
         on investments                          .38                 (.33)
         Total from investment operations        .62                 (.12)

Distributions from
     Net investment income                       (.23)               (.21)

Total increase (decrease) in net asset value     .39                 (.33)

Net asset value, ending                          $5.06               $4.67

Total return<F24>                                13.48%              (2.44%)

Ratio to average net assets
     Net investment income                       4.73%               4.64%
     Total expenses<F25>                         .43%                --
     Net expenses                                .35%                .21%
     Expenses reimbursed                         .43%                .80%

Portfolio turnover                               44%                 93%

Net assets, ending (in thousands)                $3,892              $3,387

Number of shares outstanding,
ending (in thousands)                            769                 725

<FN>
<F24>Total return does not reflect deduction of front-end sales charge.
<F25>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

Michigan Shares
Year Ended December 31,                          1997
<S>                                              <C>
Net asset value, beginning                      
Income from investment operations
     Net investment income                      
     Net realized and unrealized gain (loss)
         on investments                         
         Total from investment operations       

Distributions from
     Net investment income                      

Total increase (decrease) in net asset value    

Net asset value, ending                         

Total return<F32>                               

Ratio to average net assets
     Net investment income                      
     Total expenses<F33>                        
     Net expenses                               
     Expenses reimbursed                        

Portfolio turnover                              

Net assets, ending (in thousands)               

Number of shares outstanding,
ending (in thousands)                           

<FN>
<F32>Total return does not reflect deduction of front-end sales charge.
<F33>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

Michigan Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $5.12
Income from investment operations
     Net investment income                       .22
     Net realized and unrealized gain (loss)
         on investments                          (.01)
         Total from investment operations        .21

Distributions from
     Net investment income                       (.23)

Total increase (decrease) in net asset value     (.02)

Net asset value, ending                          $5.10

Total return<F32>                                4.19%

Ratio to average net assets
     Net investment income                       4.37%
     Total expenses<F33>                         1.02%
     Net expenses                                .93%
     Expenses reimbursed                         .02%

Portfolio turnover                               18%

Net assets, ending (in thousands)                $5,804

Number of shares outstanding,
ending (in thousands)                            1,137

<FN>
<F32>Total return does not reflect deduction of front-end sales charge.
<F33>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>



<PAGE>

<TABLE>
<CAPTION>

Michigan Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $4.74               $5.09
Income from investment operations
     Net investment income                       .24                 .23
     Net realized and unrealized gain (loss)
         on investments                          .37                 (.35)
         Total from investment operations        .61                 (.12)

Distributions from
     Net investment income                       (.23)               (.23)

Total increase (decrease) in net asset value     .38                 (.35)

Net asset value, ending                          $5.12               $4.74

Total return<F34>                                13.08%              (2.42%)

Ratio to average net assets
     Net investment income                       4.76%               4.76%
     Total expenses<F35>                         .52%                --
     Net expenses                                .48%                .18%
     Expenses reimbursed                         .39%                .84%

Portfolio turnover                               22%                 65%

Net assets, ending (in thousands)                $4,556              $5,255

Number of shares outstanding,
ending (in thousands)                            890                 1,109

<FN>
<F34>Total return does not reflect deduction of front-end sales charge.
<F35>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

                                                 From Inception
                                                 (October 1, 1993)
Michigan Shares                                  through Dec. 31, 1993
<S>                                              <C>
Net asset value, beginning                       $5.00
Income from investment operations
     Net investment income                       .04
     Net realized and unrealized gain (loss)
         on investments                          .09
         Total from investment operations        .13

Distributions from
     Net investment income                       (.04)

Total increase (decrease) in net asset value     .09

Net asset value, ending                          $5.09

Total return<F36>                                10.28%

Ratio to average net assets
     Net investment income                       4.27%(a)
     Total expenses<F37>                         --
     Net expenses                                --
     Expenses reimbursed                         .89%(a)

Portfolio turnover                               --

Net assets, ending (in thousands)                $4,287

Number of shares outstanding,
ending (in thousands)                            842

(a) Annualized

<FN>
<F36>Total return does not reflect deduction of front-end sales charge.
<F37>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

New York Shares
Year Ended December 31,                          1997
<S>                                              <C>
Net asset value, beginning                      
Income from investment operations
     Net investment income                      
     Net realized and unrealized gain (loss)
         on investments                         
         Total from investment operations       

Distributions from
     Net investment income                      
     Net realized gain                          
         Total distributions                    

Total increase (decrease) in net asset value    

Net asset value, ending                         

Total return<F38>                               

Ratio to average net assets
     Net investment income                      
     Total expenses<F39>                        
     Net expenses                               
     Expenses reimbursed                        

Portfolio turnover                              

Net assets, ending (in thousands)               

Number of shares outstanding,
ending (in thousands)                           

<FN>
<F38>Total return does not reflect deduction of front-end sales charge.
<F39>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

New York Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $5.12
Income from investment operations
     Net investment income                       .21
     Net realized and unrealized gain (loss)
         on investments                          (.02)
         Total from investment operations        .19

Distributions from
     Net investment income                       (.22)
     Net realized gain                           --
         Total distributions                     (.22)

Total increase (decrease) in net asset value     (.03)

Net asset value, ending                          $5.09

Total return<F38>                                3.79%

Ratio to average net assets
     Net investment income                       4.20%
     Total expenses<F39>                         1.13%
     Net expenses                                .98%
     Expenses reimbursed                         .03%

Portfolio turnover                               19%

Net assets, ending (in thousands)                $6,218

Number of shares outstanding,
ending (in thousands)                            1,222

<FN>
<F38>Total return does not reflect deduction of front-end sales charge.
<F39>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

New York Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $4.71               $5.05
Income from investment operations
     Net investment income                       .22                 .23
     Net realized and unrealized gain (loss)
         on investments                          .41                 (.34)
         Total from investment operations        .63                 (.11)

Distributions from
     Net investment income                       (.22)               (.23)

Total increase (decrease) in net asset value     .41                 (.34)

Net asset value, ending                          $5.12               $4.71

Total return<F40>                                13.72%              (2.26%)

Ratio to average net assets
     Net investment income                       4.47%               4.77%
     Total expenses<F41>                         .58%                --
     Net expenses                                .50%                .18%
     Expenses reimbursed                         .49%                1.13%

Portfolio turnover                               13%                 56%

Net assets, ending (in thousands)                $3,573              $2,648

Number of shares outstanding,
ending (in thousands)                            698                 562

<FN>
<F40>Total return does not reflect deduction of front-end sales charge.
<F41>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

                                                 From Inception
                                                 (October 1, 1993)
New York Shares                                  through Dec. 31, 1993
<S>                                              <C>
Net asset value, beginning                       $5.00
Income from investment operations
     Net investment income                       .04
     Net realized and unrealized gain (loss)
         on investments                          .05
         Total from investment operations        .09

Distributions from
     Net investment income                       (.04)

Total increase (decrease) in net asset value     .05

Net asset value, ending                          $5.05

Total return<F42>                                7.22%

Ratio to average net assets
     Net investment income                       3.81%(a)
     Total expenses<F43>                         --
     Net expenses                                --
     Expenses reimbursed                         2.00%(a)

Portfolio turnover                               --

Net assets, ending (in thousands)                $2,236

Number of shares outstanding,
ending (in thousands)                            433

(a) Annualized

<FN>
<F42>Total return does not reflect deduction of front-end sales charge.
<F43>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

Pennsylvania Shares
Year Ended December 31,                          1997
<S>                                              <C>
Net asset value, beginning                      
Income from investment operations
     Net investment income                      
     Net realized and unrealized gain (loss)
         on investments                         
         Total from investment operations       

Distributions from
     Net investment income                      

Total increase (decrease) in net asset value    

Net asset value, ending                         

Total return<F44>                               

Ratio to average net assets
     Net investment income                      
     Total expenses<F45>                        
     Net expenses                               
     Expenses reimbursed                        

Portfolio turnover                              

Net assets, ending (in thousands)               

Number of shares outstanding,
ending (in thousands)                           

<FN>
<F44>Total return does not reflect deduction of front-end sales charge.
<F45>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

Pennsylvania Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $5.10
Income from investment operations
     Net investment income                       .21
     Net realized and unrealized gain (loss)
         on investments                          (.02)
         Total from investment operations        .19

Distributions from
     Net investment income                       (.21)

Total increase (decrease) in net asset value     (.02)

Net asset value, ending                          $5.08

Total return<F44>                                3.92%

Ratio to average net assets
     Net investment income                       4.45%
     Total expenses<F45>                         1.11%
     Net expenses                                .93%
     Expenses reimbursed                         .05%

Portfolio turnover                               9%

Net assets, ending (in thousands)                $4,486

Number of shares outstanding,
ending (in thousands)                            883

<FN>
<F44>Total return does not reflect deduction of front-end sales charge.
<F45>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>



<PAGE>

<TABLE>
<CAPTION>

Pennsylvania Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $4.71               $5.00
Income from investment operations
     Net investment income                       .25                 .22
     Net realized and unrealized gain (loss)
         on investments                          .37                 (.29)
         Total from investment operations        .62                 (.07)

Distributions from
     Net investment income                       (.23)               (.22)

Total increase (decrease) in net asset value     .39                 (.29)

Net asset value, ending                          $5.10               $4.71

Total return<F46>                                13.51%              (1.29%)

Ratio to average net assets
     Net investment income                       5.10%               4.94%
     Total expenses<F47>                         .49%                --
     Net expenses                                .41%                .26%
     Expenses reimbursed                         .54%                .94%

Portfolio turnover                               17%                 96%

Net assets, ending (in thousands)                $2,522              $1,872

Number of shares outstanding,
ending (in thousands)                            495                 398

<FN>
<F46>Total return does not reflect deduction of front-end sales charge.
<F47>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

Comparative Performance Information. Total return for the Funds' shares
for the periods indicated are as follows:

Total  returns with maximum  sales charge  (average  annual total  returns)
are as follows:

Periods Ended
December 31, 1997                      One Year               Since
Inception
 
National Municipal Fund                ___%                   ___% (9/30/92)
Arizona Municipal Fund                 ___%                   ___%(12/31/93)
Florida Municipal Fund                 ___%                   ___%(12/31/93)
Michigan Municipal Fund                ___%                   ___% (9/30/93)
New York Municipal Fund                ___%                   ___% (9/30/93)
Pennsylvania Municipal Fund            ___%                   ___% (12/31/93)

Returns without maximum sales charge are as follows:

Periods Ended
December 31, 1997                      One Year              Since
Inception
 
National Municipal Fund                ___%                 ___% (9/30/92)
Arizona Municipal Fund                 ___%                 ___% (12/31/93)
Florida Municipal Fund                 ___%                 ___%(12/31/93)
Michigan Municipal Fund                ___%                 ___% (9/30/93)
New York Municipal Fund                ___%                 ___% (9/30/93)
Pennsylvania Municipal Fund            ___%                 ___% (12/31/93)

The total return figures shown above include the effect of the maximum
sales charge of 2.75%, changes in share price, and reinvestment of
dividends and distributions. Total return is based on historical earnings
and asset value fluctuations and is not intended to indicate future
performance. No adjustments are made to reflect any income taxes payable
by shareholders.

- ---------------------------------------------------------------------------
                     COMPARISON OF INVESTMENT POLICIES
 ...........................................................................

As noted in the "Summary" above, the investment objectives of the Funds
are similar. The National Municipal Fund and the State Municipal Funds
"seek to earn the highest level of interest income exempt from federal
income taxes as is consistent with prudent investment management,
preservation of capital, and the stated quality and maturity
characteristics;" however, the National Municipal Fund will not seek and
its distributions will not be, exempt from any state income taxes. The
Funds invest in nondiversified portfolios of municipal obligations.
Nonetheless, there are certain differences in addition to the differences
in state income taxation.

The National Municipal Fund invests at least 65% of its total assets in
municipal obligations with interest that, for most investors, is exempt
from federal income tax. Municipal obligations in which the National
Municipal Fund may invest include, but are not limited to, general
obligation bonds and notes of state and local issuers, revenue bonds of
various transportation, housing, utilities (i.e., water and sewer),
hospital and other state and local government authorities, tax and
revenue anticipation notes and bond anticipation notes, municipal leases,
and certificates of participation therein, and private activity bonds.

The State Municipal Funds invest in state-specific municipal obligations
with interest that, for most investors, is exempt from federal and that
state's income tax. Each State Municipal Fund invests at least 65% of its
total assets in municipal obligations with interest that is exempt from
federal and specific state income tax, including those issued by or on
behalf of the state for which the Fund is named and its political
subdivisions. Each State Municipal Fund also attempts to invest its
remaining assets in these obligations, but may invest its remaining
assets in municipal obligations of other states, territories and
possessions of the United States, the District of Columbia, and their
respective authorities, agencies, instrumentalities and political
subdivisions.

For liquidity purposes or pending the investment of the proceeds of the
sale of its shares, each State Municipal Fund invests in and derives up
to 35% of its income from taxable short-term money market type
investments whereas the National Municipal Fund is limited in making such
temporary investments to 20% of its income.

There is risk inherent in investing primarily in the obligations of any
one state, since economic and political changes in the state may affect
those obligations whereas the National Municipal Fund, investing in
various states, does not expose itself to the risks inherent in investing
in a single state.

The fundamental investment restrictions of the Funds are identical except
that the State Municipal Funds may not make any loans whereas the
National Municipal Fund may make loans through the purchase of money
market instruments and repurchase agreements or by the purchase of bonds,
debentures or other debt securities. The National Municipal Fund may not
purchase or sell physical commodities except that it may enter into
futures contracts and options thereon whereas the State Municipal Funds
are not so restricted.

None of the Funds may invest 25% or more of its assets in any particular
industry or industries, however, each State Municipal Fund may invest
more than 25% of its assets in obligations issued or guaranteed by the
U.S. Government, its agencies or instrumentalities but will invest in
more than 20% of such obligations only during abnormal market conditions.
Further, the State Municipal Funds may not invest 25% or more of its
assets in the securities of any one issuer.

The nonfundamental investment restrictions of the Funds are identical
except that the State Municipal Funds are not restricted as to the
following where the National Municipal Funds may not: purchase or sell a
futures contract or an option thereon if immediately thereafter, the sum
of the amount of initial margin deposits on futures and premiums on such
options would exceed 5% of the Fund's net assets; invest in puts or calls
on a security, including straddles, spreads, or any combination, if the
value of that option premium, when aggregated with the premiums on all
other options on securities held by the Fund, exceeds 5% of the Fund's
total assets; or purchase securities on margin, except that it may make
margin deposits in connection with futures contacts or options on futures.

- ---------------------------------------------------------------------------
                   INFORMATION ABOUT THE REORGANIZATION
 ...........................................................................

Plan of Reorganization. The proposed Agreement and Plan of Reorganization
(the "Agreement" or "Plan") provides that National Municipal Fund will
acquire all the assets and substantially all of the liabilities of the
State Municipal Funds in exchange for shares of National Municipal Fund
on the Closing Date (as defined in Section 2(b) of the Plan). A copy of
the Plan is attached as Exhibit A to this Proxy Statement. Discussion of
the Plan herein is qualified in its entirety by reference to the Plan in
Exhibit A. The number of full and fractional National Municipal Fund
shares to be issued to shareholders of the State Municipal Funds will
equal the value of the shares of the State Municipal Funds outstanding
immediately prior to the reorganization. Portfolio securities of the
State Municipal Funds and National Municipal Fund will be valued in
accordance with the valuation practices of National Municipal Fund which
are described on page 23 of the National Municipal Fund prospectus and on
page 9 of its Statement of Additional Information. At the time of the
reorganization, National Municipal Fund will assume and pay all of each
State Municipal Fund's then current obligations and liabilities. The
reorganization will be accounted for by the method of accounting for
tax-free reorganizations of investment companies, sometimes referred to
as the "pooling without restatement" method.

As soon as practicable after the Closing Date, the State Municipal Funds
will liquidate and distribute pro rata to their shareholders of record as
of the close of business on the Closing Date the full and fractional
shares of National Municipal Fund at an aggregate net asset value equal
to the value of the shareholder's investment in the State Municipal Funds
next determined after the effective time of the transaction. This method
of valuation is also consistent with interpretations of Rule 22c-1 under
the Investment Company Act of 1940 by the Securities and Exchange
Commission's Division of Investment Management. Such liquidation and
distribution will be accomplished by the establishment of accounts on the
share records of National Municipal Fund in the name of such State
Municipal Funds' shareholders, each representing the respective pro rata
number of full and fractional shares of National Municipal Fund due the
shareholder.

The consummation of the Plan is subject to the conditions set forth
therein. The Plan may be terminated and the reorganization abandoned as
to any State Municipal Fund at any time before or after approval by any
State Municipal Fund's shareholders, prior to the Closing Date by mutual
consent of the respective State Municipal Fund and the National Municipal
Fund, or by either if any condition set forth in the Plan has not been
fulfilled or is waived by the party entitled to its benefits. In
accordance with the Plan, each State Municipal Fund and the National
Municipal Fund will be responsible for payment of their pro rata expenses
incurred in connection with the reorganization.
 ...........................................................................

Description of National Municipal Fund Shares. Full and fractional shares
of National Municipal Fund will be issued to each State Municipal Fund
shareholder in accordance with the procedures under the Plan as described
above. Each share will be fully paid and nonassessable when issued and
transferable without restrictions and will have no preemptive or
conversion rights.
 ...........................................................................

Federal Income Tax Consequences. The Plan is a tax-free reorganization
pursuant to Section 368(a)(1)(C) of the Code. The Plan is conditioned
upon the issuance of an opinion by outside counsel to the Funds, to the
effect that, on the basis of the existing provisions of the Code, current
administrative rules and court decisions, for federal income tax
purposes: (1) no gain or loss will be recognized by the State Municipal
Funds or National Municipal Fund upon the transfer of the State Municipal
Funds assets to, and the assumption of substantially all of its
liabilities by, National Municipal Fund in exchange for National
Municipal Fund shares (Section 1032(a)); (2) no gain or loss will be
recognized by shareholders of a State Municipal Fund upon the exchange of
the State Municipal Fund's shares for National Municipal Fund shares
(Section 361(a)); (3) the basis and holding period immediately after the
reorganization for National Municipal Fund shares received by each State
Municipal Fun's shareholders pursuant to the reorganization will be the
same as the basis and holding period of the State Municipal Fund's shares
held immediately prior to the exchange (Section 354, 356); and (4) the
basis and holding period immediately after the reorganization of each
State Municipal Fund's assets acquired by National Municipal Fund will be
the same as the basis and holding period of such assets of each State
Municipal Fund immediately prior to the reorganization (Section 362(b),
1223(2)).

Opinions of counsel are not binding on the Internal Revenue Service or
the courts. If the reorganization is consummated but does not qualify as
a tax-free reorganization under the Code, the consequences described
above would not be applicable. Shareholders of the State Municipal Funds
should consult their tax advisors regarding the effect, if any, of the
proposed reorganization in light of their individual circumstances. Since
the foregoing discussion relates only to the federal income tax
consequences of the reorganization, shareholders of the State Municipal
Funds should also consult their tax advisors as to the state and local
tax consequences, if any, of the reorganization.
 ...........................................................................

Effect of the Reorganization on Capital Loss Carryforwards. The following
tables provide comparative information regarding realized capital gains
and losses and net unrealized appreciation or depreciation of portfolio
securities of National Municipal Fund and the State Municipal Funds as of
[DATE], and the capital loss carryforwards of each at the end of its last
fiscal year.

National Municipal Fund
Capital Loss Carryforward at [DATE]        [$______]
Realized Gains (losses) [DATE] - [DATE]    [$______]
Net Unrealized appreciation at [DATE]      [$______]

Florida Municipal Fund
Capital Loss Carryforward at [DATE]        [$______]
Realized Gains (losses) [DATE] - [DATE]    [$______]
Net Unrealized appreciation at [DATE]      [$______]

New York Municipal Fund
Capital Loss Carryforward at [DATE]        [$______]
Realized Gains (losses) [DATE] - [DATE]    [$______]
Net Unrealized appreciation at [DATE]      [$______]

Arizona Municipal Fund
Capital Loss Carryforward at [DATE]        [$______]
Realized Gains (losses) [DATE] - [DATE]    [$______]
Net Unrealized appreciation at [DATE]      [$______]

Michigan Municipal Fund
Capital Loss Carryforward at [DATE]        [$______]
Realized Gains (losses) [DATE] - [DATE]    [$______]
Net Unrealized appreciation at [DATE]      [$______]

Pennsylvania Municipal Fund
Capital Loss Carryforward at [DATE]        [$______]
Realized Gains (losses) [DATE] - [DATE]    [$______]
Net Unrealized appreciation at [DATE]      [$______]

If the reorganization does not occur, the respective State Municipal
Funds' loss carryforwards should be available to offset any net realized
capital gains of the respective State Municipal Funds through 2005. It is
anticipated that no distributions of net realized capital gains would be
made by the State Municipal Funds until the capital loss carryforwards
expire or are offset by net realized capital gains.

If the reorganization is consummated, National Municipal Fund will be
constrained in the extent to which it can use the capital loss
carryforwards of the respective State Municipal Funds because of
limitations imposed by the Code on the occurrence of an ownership change.
National Municipal Fund should be able to use in each year a capital loss
carryforward in an amount equal to the value of the respective State
Municipal Fund's loss carryforward on the date of the reorganization
multiplied by a long-term tax-exempt rate calculated by the Internal
Revenue Service. If the amount of such a loss is not used in one year, it
may be added to the amount available for use in the next year. For 1998,
the amount of capital loss carryforward that may be used under the
formula will be further reduced to reflect the number of days remaining
in the year following the date of the reorganization, currently
anticipated to close on or about [DATE].

The Advisor believes that the anticipated benefits outweigh the uncertain
potential detriment resulting from the partial loss of capital loss
carryforwards, and the differing consequences of federal and various
other income taxation on a distribution received by each shareholder
whose tax liabilities (if any) are determined by the net effect of a
multitude of considerations that are individual to the shareholder. State
Municipal Fund shareholders who need information as to state and local
tax consequences, if any, should consult their tax advisors.
 ...........................................................................

Capitalization. The following table shows the capitalization of the Funds
as of [RECORD DATE], and on a pro forma basis as of the date of the
proposed acquisition of assets at net asset value:


Net Assets                 Arizona       Florida        Michigan
Net Asset Value Per Share  [$_____]     [$_____]        [$_____]
Shares Outstanding         [#]          [#]             [#]

Net Assets                 New York     Pennsylvania    Pro Forma Combined*
Net Asset Value Per Share  [$_____]     [$_____]        [$_____]
Shares Outstanding         [#]          [#]             [#]

*The Pro Forma combined net assets does not reflect adjustments with
respect to distributions prior to the reorganization. Total National
Municipal Fund shares issued pro forma to State Municipal Fund
shareholders would be [#] for the Arizona Municipal Fund, [#] for the
Florida Municipal Fund, [#] for the Michigan Municipal Fund, [#] for the
New York Municipal Fund and [#] for the Pennsylvania Municipal Fund. The
actual exchange ratio will be determined based on the relative net asset
value per share on the acquisition date.

- ---------------------------------------------------------------------------
               COMPARATIVE INFORMATION ON SHAREHOLDER RIGHTS
 ...........................................................................

All of the Funds (with the exception of the Calvert Florida Municipal
Intermediate Fund which is a series of First Variable Rate Fund for
Government Income, a Massachusetts business trust) are series of the same
open-end management investment company that is organized as a Maryland
corporation, and as such share a common Articles of Incorporation and
Bylaws. There are no significant differences between the Declaration of
Trust and the Articles of Incorporation and the Bylaws of the State
Municipal Funds. After the merger, the operations of the National
Municipal Fund will continue to be governed by the Articles of
Incorporation and Bylaws of Calvert as they now exist.



- ---------------------------------------------------------------------------
                        INFORMATION ABOUT THE FUNDS
 ...........................................................................

Information about the State Municipal Funds and the National Municipal
Fund is included in a joint prospectus dated April 30, 1997. Copies of
the Prospectus are included with this Prospectus and Proxy Statement and
are incorporated by reference into it. Additional information about
National Municipal Fund and the State Municipal Funds is included in
separate Statements of Additional Information, both dated April 30, 1997,
which have been filed with the Securities and Exchange Commission and are
incorporated by reference into this Prospectus and Proxy Statement. The
audited Annual Reports to Shareholders of each Fund are also incorporated
by reference into this proxy statement. Copies of the Statements of
Additional Information and Annual Reports may be obtained without charge
by writing to the Funds at 4550 Montgomery Avenue, Suite 1000N, Bethesda,
Maryland 20814 or by calling (800) 368-2748. The Funds are subject to the
informational requirements of the Securities Exchange Act of 1934, as
amended, and the Investment Company Act of 1940, as amended (the "1940
Act"), and in accordance therewith, file proxy material, reports and other
information with the Securities and Exchange Commission. These reports
may be inspected and copied at the Public Reference facilities maintained
by the Securities and Exchange Commission at 450 Fifth Street, N.W.,
Washington, D.C. 20549. Copies of the material may also be obtained from
the Office of Consumer Affairs and Information Services of the Securities
and Exchange Commission at prescribed rates. In addition, the Securities
and Exchange Commission maintains a Web site (http://www.sec.gov) that
contains reports, other information and proxy statements filed by Calvert
on behalf of the Funds, which file such information electronically with
Securities and Exchange Commission.

- ---------------------------------------------------------------------------
                              OTHER BUSINESS
 ...........................................................................

The Directors of the State Municipal Funds do not intend to present any
other business at the meeting. If, however, any other matters are
properly brought before the meeting, the persons named in the
accompanying form of proxy will vote thereon in accordance with their
judgment.

- ---------------------------------------------------------------------------
                            VOTING INFORMATION
 ...........................................................................

Proxies from the shareholders of the State Municipal Funds are being
solicited by the Directors of Calvert for the Special Meeting of
Shareholders to be held in the Tenth Floor Conference Room of Calvert
Group Ltd., Air Rights North Tower, 4550 Montgomery Avenue, Suite 1000N,
Bethesda, Maryland at 10:00 a.m. on [DAY], April __, 1998, or at such
later time or date made necessary by adjournment. A proxy may be revoked
at any time before the meeting or during the meeting by oral or written
notice to William M. Tartikoff, Esq., Secretary, 4550 Montgomery Avenue,
Suite 1000N, Bethesda, Maryland 20814. Unless revoked, all valid proxies
will be voted in accordance with the specification thereon or, in the
absence of specification, for approval of the Plan. Abstentions and broker 
non-votes will be counted as Shares present for purposes of determining 
whether a quorum is present but will not be voted for or against any 
adjournment or proposal. Accordingly, abstentions and broker non-votes
effectively will be a vote against adjournment or against any proposal
where the required vote is a percentage of the shares present.

Proxies are solicited by mail. Additional solicitations may be made by
telephone, computer communications, facsimile or other such means, or by
personal contact by officers or employees of Calvert Group and its
affiliates or by proxy soliciting firms retained for this purpose. The
State Municipal Funds will bear solicitation costs.

Shareholders of the State Municipal Funds of record at the close of
business on [RECORD DATE] ("record date") are entitled to notice of and
to vote at the Special Meeting or any adjournment thereof. Shareholders 
are entitled to one vote for each share held. As of [RECORD DATE], as 
shown on the books of the State Municipal Funds, there were issued and 
outstanding [#] shares of the Arizona Municipal Fund, [#] shares of the 
Florida Municipal Fund, [#] shares of the Michigan Municipal Fund, [#] shares 
of the New York Municipal Fund and [#] shares of the Pennsylvania Municipal 
Fund. The votes of the shareholders of National Municipal Fund are not being
solicited since their approval or consent is not necessary for this
transaction. As of [DATE], the officers and directors of the respective
State Municipal Funds as a group beneficially owned less than 1% of the
outstanding shares of the respective State Municipal Funds.

As of [RECORD DATE], no shareholders owned of record 5% or more of the
shares of the respective State Municipal Funds.

- ---------------------------------------------------------------------------
                                ADJOURNMENT
 ...........................................................................

In the event that sufficient votes in favor of the proposals set forth in
the Notice of Meeting and Proxy Statement are not received by the time
scheduled for the meeting, the persons named as proxies may move one or
more adjournments of the meeting to permit further solicitation of
proxies with respect to any such proposals. Any such adjournment will
require the affirmative vote of a majority of the shares present at the
meeting. The persons named as proxies will vote in favor of such
adjournment those shares that they are entitled to vote which have voted
in favor of such proposals. They will vote against any such adjournment
those proxies that have voted against any such proposals.

By Order of the Directors
William M. Tartikoff, Esq.
Secretary

The Directors of Calvert Municipal Fund, Inc.  and First Variable Rate
Fund for Government Income, including the Independent Directors,
recommend a Vote FOR Approval of the Plan.

<PAGE>


THE CALVERT MUNICIPAL FUND, INC. :
CALVERT ARIZONA MUNICIPAL INTERMEDIATE FUND
CALVERT MICHIGAN MUNICIPAL INTERMEDIATE FUND
CALVERT NEW YORK MUNICIPAL INTERMEDIATE FUND
CALVERT PENNSYLVANIA MUNICIPAL INTERMEDIATE FUND

FIRST VARIABLE RATE FUND FOR GOVERNMENT INCOME:
CALVERT FLORIDA MUNICIPAL INTERMEDIATE FUND

THIS PROXY IS SOLICITED BY THE BOARDS OF TRUSTEES/DIRECTORS

The undersigned, revoking previous proxies, hereby appoint(s) William M.
Tartikoff, Esq. and Barbara J. Krumsiek, attorneys, with full power of
substitution, to vote all shares of Calvert Arizona Municipal
Intermediate Fund, Calvert Florida Municipal Intermediate Fund, Calvert
Michigan Municipal Intermediate Fund, Calvert New York Municipal
Intermediate Fund, and Calvert Pennsylvania Municipal Intermediate Fund,
that the undersigned is entitled to vote at the Special Meeting of
Shareholders to be held in the Tenth Floor Conference Room of Calvert
Group, 4550 Montgomery Avenue, Suite 1000N, Bethesda, Maryland 20814 on
[DAY], April __, 1998, at 10:00 a.m. and at any adjournment thereof. All
powers may be exercised by a majority of the proxy holders or substitutes
voting or acting or, if only one votes and acts, then by that one. This
Proxy shall be voted on the proposal described in the Proxy Statement.
Receipt of the Notice of the Meeting and the accompanying Proxy Statement
is hereby acknowledged.

NOTE: Please sign
exactly as your name
appears on this Proxy.
When signing in a
fiduciary capacity, such
as executor,
administrator, trustee,
guardian, etc., please
so indicate. Corporate
and partnership proxies
should be signed by an
authorized person
indicating the person's
title.

                              Date: ________________________, 1998

                              __________________________________

                              __________________________________
                              Signature(s) (Title(s), if applicable)


PLEASE SIGN, DATE, AND RETURN
PROMPTLY IN ENCLOSED ENVELOPE

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

Please refer to the Proxy Statement discussion on this matter.

IF NO SPECIFICATION IS MADE, THE PROXY SHALL BE VOTED FOR THE PROPOSAL.

As to any other matter, said attorneys shall vote in accordance with
their best judgment.

THE BOARDS OF TRUSTEES/DIRECTORS RECOMMEND A VOTE FOR THE FOLLOWING:

1.    To act upon a proposal to approve an Agreement and Plan of
     Reorganization whereby Calvert National Municipal Intermediate Fund,
     a series of the Calvert Municipal Fund, Inc., will (i) acquire all of
     the assets of the Calvert Arizona Municipal Intermediate Fund,
     Calvert Florida Municipal Intermediate Fund, Calvert Michigan
     Municipal Intermediate Fund, Calvert New York Municipal Intermediate
     Fund and Calvert Pennsylvania Municipal Intermediate Fund; and (ii)
     assume certain identified liabilities of each of the above-named
     Funds as substantially discussed in the accompanying Prospectus and
     Proxy Statement.

         [  ] For                   [  ] Against              [  ] Abstain

2.    To transact any other business that may properly come before the
     Special Meeting or any adjournment or adjournments thereof.



<PAGE>

                                                                Exhibit A

                      FORM OF AGREEMENT AND PLAN OF REORGANIZATION


This AGREEMENT AND PLAN OF REORGANIZATION, dated as of [DATE], is among
Calvert National Municipal Intermediate Fund ("National Municipal Fund"),
Calvert Arizona Municipal Intermediate Fund, Calvert Florida Municipal
Intermediate Fund, Calvert Michigan Municipal Intermediate Fund, Calvert New
York Municipal Intermediate Fund and Calvert Pennsylvania Municipal
Intermediate Fund (together, the "State Municipal Funds"). The National
Municipal Fund and the State Municipal Funds (with the exception of the
Calvert Florida Municipal Intermediate Fund) are series of the Calvert
Municipal Fund, Inc. while the Calvert Florida Municipal Intermediate Fund is
a series of First Variable Rate Fund for Government Income (together,
"Calvert").

In consideration of the mutual promises contained in this Agreement, the
parties agree as follows:

1.       SHAREHOLDER APPROVAL

Approval by Shareholders. A meeting of the shareholders of the State Municipal
Funds shall be called and held for the purpose of acting on and authorizing
the transactions contemplated in this Agreement and Plan of Reorganization
(the "Agreement" or "Plan"). National Municipal Fund shall furnish to the
State Municipal Funds such data and information as shall be reasonably
requested by the State Municipal Funds for inclusion in the information to be
furnished to their shareholders in connection with the meeting.

2.       REORGANIZATION

(a)   Plan of Reorganization. The State Municipal Funds will convey, transfer,
     and deliver to National Municipal Fund all of the then-existing assets of
     the State Municipal Funds at the closing provided for in Section 2(b) of
     this Agreement (the "Closing"). In consideration thereof, National
     Municipal Fund agrees at the Closing:

     (i)  to assume and pay, to the extent that they exist on or after the
         Effective Time of the Reorganization (as defined in Section 2(b)),
         all of the State Municipal Funds' obligations and liabilities,
         whether absolute, accrued, contingent, or otherwise; and

     (ii)          to deliver to the State Municipal Funds in exchange for the
         assets the number of full and fractional shares of common stock of
         National Municipal Fund ("National Municipal Fund Shares") to be
         determined as follows: In accordance with Section 3 of this
         Agreement, the number of shares shall be determined by dividing the
         per share net asset value of the State Municipal Funds Shares
         (rounded to the nearest million) by the net asset value per share of
         National Municipal Fund (rounded to the nearest million) and
         multiplying the quotient by the number of outstanding shares of the
         State Municipal Funds as of the close of business on the closing
         date. It is expressly agreed that there will be no sales charge to
         State Municipal Funds, or to any of the shareholders of the State
         Municipal Funds upon distribution of National Municipal Fund Shares
         to them.

(b)   Closing and Effective Time of the Reorganization. The Closing shall
     occur at the Effective Time of the Reorganization, which shall be either:

     (i)  the later of receipt of all necessary regulatory approvals and the
         final adjournment of the meeting of shareholders of the State
         Municipal Funds at which the Plan will be considered, or

     (ii)          such later date as the parties may mutually agree.

3.       VALUATION OF NET ASSETS

(a)   The value of State Municipal Funds' net assets to be transferred to
     National Municipal Fund under this Agreement shall be computed as of the
     close of business on the business day immediately preceding the Closing
     Date (hereinafter the "Valuation Date") using the valuation procedures as
     set forth in National Municipal Fund 's prospectus.

(b)   The net asset value per share of National Municipal Fund Shares for
     purposes of Section 2 of this Agreement shall be determined as of the
     close of business on the Valuation Date by National Municipal Fund 's
     Controller using the same valuation procedures as set forth in National
     Municipal Fund 's prospectus.

(c)   A copy of the computation showing in reasonable detail the valuation of
     State Municipal Funds' net assets to be transferred to National Municipal
     Fund pursuant to paragraph 2 of this Agreement, certified by the
     Controller of State Municipal Funds, shall be furnished by the State
     Municipal Funds to National Municipal Fund at the Closing. A copy of the
     computation showing in reasonable detail the determination of the net
     asset value per share of National Municipal Fund Shares pursuant to
     paragraph 2 of this Agreement, certified by the Controller of National
     Municipal Fund, shall be furnished by National Municipal Fund to the
     State Municipal Funds at the Closing.

4.       LIQUIDATION AND DISSOLUTION

(a)   As soon as practicable after the Closing Date, the State Municipal Funds
     will distribute pro rata to the State Municipal Funds' shareholders of
     record as of the close of business on the Closing Date the shares of
     National Municipal Fund received by the State Municipal Funds pursuant to
     this Section. Such liquidation and distribution will be accompanied by
     the establishment of shareholder accounts on the share records of
     National Municipal Fund in the names of each such shareholder of State
     Municipal Funds, representing the respective pro rata number of full
     shares and fractional interests in shares of National Municipal Fund due
     to each. No such shareholder accounts shall be established by National
     Municipal Fund or its transfer agent for National Municipal Fund except
     pursuant to written instructions from State Municipal Funds, and the
     State Municipal Funds agree to provide on the Closing Date instructions
     to transfer to a shareholder account for each former the State Municipal
     Funds shareholder a pro rata share of the number of shares of National
     Municipal Fund received pursuant to Section 2(a) of this Agreement.

(b)   Promptly after the distribution described in Section 4(a) above,
     appropriate notification will be mailed by National Municipal Fund or its
     transfer agent to each shareholder of the State Municipal Funds receiving
     such distribution of shares of National Municipal Fund informing such
     shareholder of the number of such shares distributed to such shareholder
     and confirming the registration thereof in such shareholder's name.

(c)   Following the Closing Date and until surrendered, each outstanding share
     certificate representing shares of the State Municipal Funds shall be
     deemed for all purposes to evidence ownership of shares of National
     Municipal Fund that the holder is entitled to receive in exchange for the
     certificate. The shares of National Municipal Fund that the holder is
     entitled to receive with respect to State Municipal Funds' share
     certificates not yet surrendered will be held by National Municipal Fund
     's transfer agent on behalf of the shareholder, but may not be
     transferred or redeemed until surrender of State Municipal Funds' share
     certificates in proper form for transfer to National Municipal Fund 's
     transfer agent or, in lieu thereof, the posting of a lost certificate
     bond or other surety instrument deemed acceptable to National Municipal
     Fund 's transfer agent. All of National Municipal Fund 's distributions
     attributable to the shares represented by the share certificates of the
     State Municipal Funds retained by shareholders will be paid to the
     shareholder in cash or invested in additional shares of National
     Municipal Fund at the net asset value in effect on the respective payment
     dates in accordance with instructions previously given by the shareholder
     to State Municipal Funds' transfer agent.

      Share certificates representing holdings of shares of National Municipal
     Fund shall not be issued unless requested by the shareholder and, if such
     a request is made, share certificates of National Municipal Fund will be
     issued only for full shares of National Municipal Fund and any fractional
     interests in shares shall be credited in the shareholder's account with
     National Municipal Fund.

(d)   As promptly as is practicable after the liquidation of State Municipal
     Funds, and in no event later than 12 months from the date of this
     Agreement, the State Municipal Funds shall be terminated pursuant to the
     provisions of the Plan and Calvert's Articles of Incorporation.

(e)   Immediately after the Closing Date, the share transfer books of the
     State Municipal Funds shall be closed and no transfer of shares shall
     thereafter be made on those books.

5.       ARTICLES OF INCORPORATION AND BY-LAWS

(a)   Articles of Incorporation. The Articles of Incorporation of Calvert,
     which governs its series National Municipal Fund, as in effect
     immediately prior to the Effective Time of the Reorganization shall
     continue to be the Articles of Incorporation until amended as provided by
     law.

(b)   By-laws. The By-laws of Calvert, which govern its series National
     Municipal Fund, in effect at the Effective Time of the Reorganization
     shall continue to be the By-laws until the same shall thereafter be
     altered, amended, or repealed in accordance with the Trust Indenture or
     said By-laws.

6.       REPRESENTATIONS AND WARRANTIES OF NATIONAL MUNICIPAL FUND

(a)   Organization, Existence, etc. National Municipal Fund is a duly
     organized series of Calvert, validly existing and in good standing under
     the laws of the State of Maryland, and has the power to carry on its
     business as it is now being conducted. Currently, National Municipal Fund
     is not qualified to do business as a foreign corporation under the laws
     of any jurisdiction. National Municipal Fund has all necessary federal,
     state and local authorization to own all of its properties and assets and
     to carry on its business as now being conducted.

(b)   Registration as Investment Company. Calvert, of which National Municipal
     Fund is a series, is registered under the Investment Company Act of 1940
     (the "Act") as an open-end nondiversified management investment company.
     Its registration has not been revoked or rescinded and is in full force
     and effect.

(c)   Capitalization. National Municipal Fund has an unlimited number of
     shares of beneficial interest, no par value, of which as of [DATE], [#]
     shares were outstanding, and no shares were held in the treasury of
     National Municipal Fund. All of the outstanding shares of National
     Municipal Fund have been duly authorized and are validly issued, fully
     paid, and non-assessable. Since National Municipal Fund is a series of an
     open-end investment company engaged in the continuous offering and
     redemption of its shares, the number of outstanding shares may change
     prior to the Effective Time of the Reorganization.

(d)   Financial Statements. The financial statements of National Municipal
     Fund for the year ended December 31, 1997 ("National Municipal Fund
     Financial Statements"), previously delivered to State Municipal Funds,
     fairly present the financial position of National Municipal Fund as of
     December 31, 1997 and the results of its operations and changes in its
     net assets for the year then ended.

(e)   Shares to be Issued Upon Reorganization. National Municipal Fund Shares
     to be issued in connection with the Reorganization have been duly
     authorized and upon consummation of the Reorganization will be validly
     issued, fully paid and non-assessable.

(f)   Authority Relative to this Agreement. Calvert has the power to enter
     into the Plan on behalf of its series National Municipal Fund and to
     carry out its obligations under this Agreement. The execution and
     delivery of the Plan and the consummation of the transactions
     contemplated have been duly authorized by the Boards of
     Trustees/Directors of Calvert and no other proceedings by Calvert are
     necessary to authorize its officers to effectuate the Plan and the
     transactions contemplated. National Municipal Fund is not a party to or
     obligated under any charter, by-law, indenture, or contract provision or
     any other commitment or obligation, or subject to any order or decree
     which would be violated by its executing and carrying out the Plan.

(g)   Liabilities. There are no liabilities of Calvert on behalf of its series
     National Municipal Fund, whether or not determined or determinable, other
     than liabilities disclosed or provided for in National Municipal Fund
     Financial Statements and liabilities incurred in the ordinary course of
     business subsequent to December 31, 1997 or otherwise previously
     disclosed to State Municipal Funds, none of which has been materially
     adverse to the business, assets or results of operations of National
     Municipal Fund.

(h)   Litigation. To the knowledge of National Municipal Fund there are no
     claims, actions, suits, or proceedings, pending or threatened, which
     would adversely affect National Municipal Fund or its assets or business,
     or which would prevent or hinder consummation of the transactions
     contemplated by this Agreement.

(i)   Contracts. Except for contracts and agreements previously disclosed to
     the State Municipal Funds under which no default exists, National
     Municipal Fund is not a party to or subject to any material contract,
     debt instrument, plan, lease, franchise, license, or permit of any kind
     or nature whatsoever.

(j)   Taxes. The federal income tax returns of National Municipal Fund have
     been filed for all taxable years to and including December 31, 1997, and
     all taxes payable pursuant to such returns have been paid. National
     Municipal Fund has qualified as a regulated investment company under the
     Internal Revenue Code in respect to each taxable year of National
     Municipal Fund since commencement of its operations.

(k)   Registration Statement. National Municipal Fund shall have filed with
     the Securities and Exchange Commission (the "Commission") a Registration
     Statement under the Securities Act of 1933 ("Securities Act") relating to
     the shares of capital stock of National Municipal Fund issuable under
     this Agreement. At the time the Registration Statement becomes effective,
     the Registration Statement:

         (i)   will comply in all material respects with the provisions of the
              Securities Act and the rules and regulations of the Commission
              thereunder (the "Regulations"), and

         (ii)      will not contain an untrue statement of material fact or
              omit to state a material act required to be stated therein or
              necessary to make the Statements therein not misleading.

Further, at the time the Registration Statement becomes effective, at the time
of the shareholders' meeting referred to in Section 1, and at the Effective
Time of the Reorganization, the Prospectus and Statement of Additional
Information included therein, as amended or supplemented by any amendments or
supplements filed by National Municipal Fund, will not contain an untrue
statement of a material fact or omit to state a material fact necessary to
make the Statements therein, in the light of the circumstances under which
they were made, not misleading; provided, however, that none of the
representations and warranties in this subsection shall apply to statements in
or omissions from the Registration Statement or Prospectus and Statement of
Additional Information made in reliance upon and in conformity with
information furnished by the State Municipal Funds for use in the Registration
Statement or Prospectus and Statement of Additional Information as provided in
Section 7(k).

7.       REPRESENTATIONS AND WARRANTIES OF STATE MUNICIPAL FUNDS

(a)   Organization, Existence, etc. The State Municipal Funds (with the
     exception of the Calvert Florida Municipal Intermediate Fund) are duly
     organized series of Calvert, validly existing and in good standing under
     the laws of the State of Maryland, and has power to carry on their
     business as it is now being conducted. The Calvert Florida Municipal
     Intermediate Fund is a duly organized series of Calvert, validly existing
     and in good standing under the laws of the Commonwealth of Massachusetts,
     and has power to carry on its business as it is now being conducted.
     Currently, the State Municipal Funds are not qualified to do business as
     a foreign corporation under the laws of any jurisdiction. The State
     Municipal Funds have all necessary federal, state and local authorization
     to own all of their properties and assets and to carry on their business
     as now being conducted.

(b)   Registration as Investment Company. Calvert, of which the State
     Municipal Funds are series, is registered under the Act as an open-end
     nondiversified management investment company. Its registration has not
     been revoked or rescinded and is in full force and effect.

(c)   Capitalization. The State Municipal Funds have an unlimited number of
     shares of beneficial interest, no par value, of which as of [DATE], [#]
     shares were outstanding, and no shares were held in the treasury of State
     Municipal Funds. All of the outstanding shares of the State Municipal
     Funds have been duly authorized and are validly issued, fully paid, and
     non-assessable. Since the State Municipal Funds are series of open-end
     investment companies engaged in the continuous offering and redemption of
     their shares, the number of outstanding shares of the State Municipal
     Funds may change prior to the Effective Date of the Reorganization.

(d)   Financial Statements. The financial statements of the State Municipal
     Funds for the year ended December 31, 1997 ("the State Municipal Funds
     Financial Statements"), previously delivered to National Municipal Fund,
     fairly present the financial position of the State Municipal Funds as of
     December 31, 1997 and the results of their operations and changes in
     their net assets for the year then ended.

(e)   Authority Relative to the Plan. Calvert has the power to enter into the
     Plan on behalf of the State Municipal Funds and to carry out their
     obligations under this Agreement. The execution and delivery of the Plan
     and the consummation of the transactions contemplated have been duly
     authorized by the Directors of Calvert and, except for approval by the
     holders of their capital stock, no other proceedings by Calvert are
     necessary to authorize their officers to effectuate the Plan and the
     transactions contemplated. the State Municipal Funds are not a party to
     or obligated under any charter, by-law, indenture, or contract provision
     or any other commitment or obligation, or subject to any order or decree,
     which would be violated by their executing and carrying out the Plan.

(f)   Liabilities. There are no liabilities of the State Municipal Funds
     whether or not determined or determinable, other than liabilities
     disclosed or provided for in the State Municipal Funds Financial
     Statements and liabilities incurred in the ordinary course of business
     subsequent to December 31, 1997 or otherwise previously disclosed to
     National Municipal Fund, none of which has been materially adverse to the
     business, assets, or results of operations of State Municipal Funds.

(g)   Litigation. To the knowledge of the State Municipal Funds, there are no
     claims, actions, suits, or proceedings, pending or threatened, which
     would adversely affect the State Municipal Funds or their assets or
     business, or which would prevent or hinder consummation of the
     transactions contemplated by this Agreement.

(h)   Contracts. Except for contracts and agreements previously disclosed to
     National Municipal Fund under which no default exists, Calvert, on behalf
     of the State Municipal Funds, is not a party to or subject to any
     material contract, debt instrument, plan, lease, franchise, license, or
     permit of any kind or nature whatsoever.

(i)   Taxes. The federal income tax returns of the State Municipal Funds have
     been filed for all taxable years to and including the taxable year ended
     December 31, 1997 and all taxes payable pursuant to such returns have
     been paid. The State Municipal Funds have qualified as a regulated
     investment company under the Internal Revenue Code with respect to each
     past taxable year of the State Municipal Funds since commencement of
     their operations.

(j)   Portfolio Securities. All securities to be listed in the schedule of
     investments of the State Municipal Funds as of the Effective Time of the
     Reorganization will be owned by Calvert on behalf of the State Municipal
     Funds free and clear of any liens, claims, charges, options, and
     encumbrances, except as indicated in the schedule. Except as so
     indicated, none of the securities is, or after the Reorganization as
     contemplated by this Agreement will be, subject to any legal or
     contractual restrictions on disposition (including restrictions as to the
     public offering or sale of the securities under the Securities Act), and
     all the securities are or will be readily marketable.

(k)   Registration Statement. The State Municipal Funds will cooperate with
     National Municipal Fund in connection with the Registration Statement
     referred to in Section 6(k) of this Agreement, and will furnish to
     National Municipal Fund the information relating to the State Municipal
     Funds required by the Securities Act and its Regulations to be set forth
     in the Registration Statement (including the Prospectus and Statement of
     Additional Information). At the time the Registration Statement becomes
     effective, the Registration Statement, insofar as it relates to State
     Municipal Funds:

          (i) will comply in all material respects with the provisions of the
              Securities Act and its regulations, and

         (ii) will not contain an untrue statement of a material fact or
              omit to state a material fact required to be stated therein or
              necessary to make the Statements therein not misleading.

          Further, at the time the Registration Statement becomes effective,
at the time of the shareholders' meeting referred to in Section I and at the
Effective Time of the Reorganization, the Prospectus and Statement of
Additional Information, as amended or supplemented by any amendments or
supplements filed by National Municipal Fund, insofar as it relates to State
Municipal Funds, will not contain an untrue statement of a material fact or
omit to state a material fact necessary to make the Statements therein, in the
light of the circumstances under which they were made, not misleading;
provided, however, that the representations and warranties in this subsection
shall apply only to statements in or omissions from the Registration Statement
or Prospectus and Statement of Additional Information made in reliance upon
and in conformity with information furnished by the State Municipal Funds for
use in the Registration Statement or Prospectus and Statement of Additional
Information as provided in this Section 7(k).

8.       CONDITIONS TO OBLIGATIONS OF STATE MUNICIPAL FUNDS

The obligations of the State Municipal Funds under this Agreement with respect
to the consummation of the Reorganization are subject to the satisfaction of
the following conditions:

(a)   Shareholder Approval. The Plan shall have been approved by the
     affirmative vote of the holders of a majority of the outstanding shares
     of capital stock of State Municipal Funds.

(b)   Representations, Warranties and, Agreements. As of the Effective Time of
     the Reorganization, National Municipal Fund shall have complied with each
     of its responsibilities under this Agreement, each of the representations
     and warranties contained in this Agreement shall be true in all material
     respects, and there shall have been no material adverse change in the
     financial condition, results of operations, business, properties, or
     assets of National Municipal Fund since December 31, 1997. As of the
     Effective Time of the Reorganization, the State Municipal Funds shall
     have received a certificate from National Municipal Fund satisfactory in
     form and substance to the State Municipal Funds indicating that it has
     met the terms stated in this Section.

(c)   Regulatory Approval. The Registration Statement referred to in Section
     6(k) shall have been declared effective by the Commission and no stop
     orders under the Securities Act pertaining thereto shall have been
     issued; all necessary orders of exemption under the Act with respect to
     the transactions contemplated by this Agreement shall have been granted
     by the Commission; and all approvals, registrations, and exemptions under
     federal and state laws considered to be necessary shall have been
     obtained.

(d)   Tax Opinion. The State Municipal Funds shall have received the opinion
     of counsel, dated the Effective Time of the Reorganization, addressed to
     and in form and substance satisfactory to State Municipal Funds, as to
     certain of the federal income tax consequences of the Reorganization
     under the Internal Revenue Code to the State Municipal Funds and their
     shareholders. For purposes of rendering its opinion, counsel may rely
     exclusively and without independent verification, as to factual matters,
     on the Statements made in the Plan, the proxy statement which will be
     distributed to the shareholders of the State Municipal Funds in
     connection with the Reorganization, and on such other written
     representations as the State Municipal Funds and National Municipal Fund,
     respectively, will have verified as of the Effective Time of the
     Reorganization. The opinion of counsel will be to the effect that, based
     on the facts and assumptions stated therein, for federal income tax
     purposes:

         (i)   neither the State Municipal Funds nor National Municipal Fund
              will recognize any gain or loss upon the transfer of the assets
              of the State Municipal Funds to and the assumption of their
              liabilities by National Municipal Fund in exchange for National
              Municipal Fund Shares and upon the distribution (whether actual
              or constructive) of National Municipal Fund Shares to its
              shareholders in exchange for their shares of capital stock of
              State Municipal Funds;

         (ii)  the shareholders of the State Municipal Funds who receive
              National Municipal Fund Shares pursuant to the Reorganization
              will not recognize any gain or loss upon the exchange (whether
              actual or constructive) of their shares of capital stock of the
              State Municipal Funds for National Municipal Fund Shares
              (including any fractional share interests they are deemed to
              have received) pursuant to the Reorganization;

         (iii)  the basis of National Municipal Fund Shares received by
              State Municipal Funds' shareholders will be the same as the
              basis of the shares of capital stock of the State Municipal
              Funds surrendered in the exchange; and

         (iv)  the basis of the State Municipal Funds' assets acquired by
              National Municipal Fund will be the same as the basis of such
              assets to the State Municipal Funds immediately prior to the
              Reorganization.

9.    CONDITIONS TO OBLIGATIONS OF NATIONAL MUNICIPAL FUND

The obligations of National Municipal Fund under this Agreement with respect
to the consummation of the Reorganization are subject to the satisfaction of
the following conditions:

(a)   Representations, Warranties, and Agreements. As of the Effective Time of
     the Reorganization, the State Municipal Funds shall have complied with
     each of their obligations under this Agreement, each of the
     representations and warranties contained in this Agreement shall be true
     in all material respects, and there shall have been no material adverse
     change in the financial condition, results of operations, business,
     properties or assets of the State Municipal Funds since December 31,
     1997. National Municipal Fund shall have received a certificate from the
     State Municipal Funds satisfactory in form and substance to National
     Municipal Fund indicating that they have met the terms stated in this
     Section.

(b)   Regulatory Approval. All necessary orders of exemption under the Act
     with respect to the transactions contemplated by this Agreement shall
     have been granted by the Commission, and all approvals, registrations,
     and exemptions under state securities laws considered to be necessary
     shall have been obtained.

(c) Tax Opinion. National Municipal Fund shall have received the opinion of
     counsel, dated the Effective Time of the Reorganization, addressed to and
     in form and substance satisfactory to National Municipal Fund, as to
     certain of the federal income tax consequences of the Reorganization
     under the Internal Revenue Code to the State Municipal Funds and the
     shareholders of State Municipal Funds. For purposes of rendering its
     opinion, counsel may rely exclusively and without independent
     verification, as to factual matters, on the Statements made in the Plan,
     the proxy statement which will be distributed to the shareholders of the
     State Municipal Funds in connection with the Reorganization, and on such
     other written representations as the State Municipal Funds and National
     Municipal Fund, respectively, will have verified as of the Effective Time
     of the Reorganization. The opinion of counsel will be to the effect that,
     based on the facts and assumptions stated therein, for federal income tax
     purposes:

     (i)  neither the State Municipal Funds nor National Municipal Fund will
         recognize any gain or loss upon the transfer of the assets of the
         State Municipal Funds to, and the assumption of their liabilities by,
         National Municipal Fund in exchange for National Municipal Fund
         Shares and upon the distribution (whether actual or constructive) of
         National Municipal Fund Shares to its shareholders in exchange for
         their shares of beneficial interest of State Municipal Funds;

     (ii) the shareholders of the State Municipal Funds who receive National
         Municipal Fund Shares pursuant to the Reorganization will not
         recognize any gain or loss upon the exchange (whether actual or
         constructive) of their shares of capital stock of the State Municipal
         Funds for National Municipal Fund Shares (including any fractional
         share interests they are deemed to have received) pursuant to the
         Reorganization;

     (iii) the basis of National Municipal Fund Shares received by
         State Municipal Funds' shareholders will be the same as the basis of
         the shares of capital stock of the State Municipal Funds surrendered
         in the exchange; and

     (iv) the basis of the State Municipal Funds assets acquired by National
         Municipal Fund will be the same as the basis of such assets to the
         State Municipal Funds immediately prior to the Reorganization.

10.      AMENDMENTS, TERMINATIONS, NON-SURVIVAL OF COVENANTS, WARRANTIES
         AND REPRESENTATIONS

(a)   The parties hereto may, by agreement in writing authorized by the Boards
     of Trustees/Directors of Calvert, amend the Plan at any time before or
     after approval of the Plan by shareholders of State Municipal Funds, but
     after such approval, no amendment shall be made that substantially
     changes the terms of this Agreement.

(b)   At any time prior to the Effective Time of the Reorganization, any of
     the parties may by written instrument signed by it: (i) waive any
     inaccuracies in the representations and warranties made pursuant to this
     Agreement, and (ii) waive compliance with any of the covenants or
     conditions made for its benefit pursuant to this Agreement.

(c)   The State Municipal Funds may terminate the Plan at any time prior to
     the Effective Time of the Reorganization by notice to National Municipal
     Fund if: (i) a material condition to their performance under this
     Agreement or a material covenant of National Municipal Fund contained in
     this Agreement is not fulfilled on or before the date specified for the
     fulfillment thereof, or (ii) a material default or material breach of the
     Plan is made by National Municipal Fund.

(d)   National Municipal Fund may terminate the Plan at any time prior to the
     Effective Time of the Reorganization by notice to the State Municipal
     Funds if: (i) a material condition to its performance under this
     Agreement or a material covenant of the State Municipal Funds contained
     in this Agreement is not fulfilled on or before the date specified for
     the fulfillment thereof, or (ii) a material default or material breach of
     the Plan is made by State Municipal Funds.

(e)   The Plan may be terminated by either party at any time prior to the
     Effective Time of the Reorganization upon notice to the other party,
     whether before or after approval by the shareholders of State Municipal
     Funds, without liability on the part of either party hereto or their
     respective trustees, officers, or shareholders, and shall be terminated
     without liability as of the close of business on December 31, 1997 if the
     Effective Time of the Reorganization is not on or prior to such date.

(f)   No representations, warranties, or covenants in or pursuant to the Plan
     shall survive the Reorganization.

11.      EXPENSES

The State Municipal Funds and National Municipal Fund will bear their own
expenses incurred in connection with this Reorganization.

12.      GENERAL

This Plan supersedes all prior agreements between the parties (written or
oral), is intended as a complete and exclusive statement of the terms of the
Plan between the parties and may not be changed or terminated orally. The Plan
may be executed in one or more counterparts, all of which shall be considered
one and the same agreement, and shall become effective when one or more
counterparts have been executed by each party and delivered to each of the
parties hereto. The headings contained in the Plan are for reference purposes
only and shall not affect in any way the meaning or interpretation of the
Plan. Nothing in the Plan, expressed or implied, is intended to confer upon
any other person any rights or remedies by reason of the Plan.

IN WITNESS WHEREOF, the State Municipal Funds and National Municipal Fund have
caused the Plan to be executed on their behalf by their Chairman, President,
or a Vice President, and their seals to be affixed hereto and attested by
their respective Secretary or Assistant Secretary, all as of the day and year
first above written, and to be delivered as required.



(SEAL)                                      ARIZONA MUNICIPAL INTERMEDIATE FUND


Attest:


By:      _________________________  By:     _______________________________
                                            Barbara J. Krumsiek, President




<PAGE>

(SEAL)                                      FLORIDA MUNICIPAL INTERMEDIATE FUND


By:      _________________________  By:     _______________________________
                                            Barbara J. Krumsiek, President




(SEAL)                                      MICHIGAN MUNICIPAL INTERMEDIATE
FUND


By:      _________________________  By:     _______________________________
                                            Barbara J. Krumsiek, President




(SEAL)                                      NEW YORK MUNICIPAL INTERMEDIATE
FUND


By:      _________________________  By:     _______________________________
                                            Barbara J. Krumsiek, President




(SEAL)                                      PENNSYLVANIA MUNICIPAL INTERMEDIATE
                                             FUND


By:      _________________________  By:     _______________________________
                                            Barbara J. Krumsiek, President




(SEAL)                                      NATIONAL MUNICIPAL INTERMEDIATE
FUND


By:      _________________________  By:     _______________________________
                                            William M. Tartikoff
                                            Senior Vice President

<PAGE>
             The Calvert Municipal Intermediate Fund, Inc.
                  STATEMENT OF ADDITIONAL INFORMATION

                            [DATE]

                   Acquisition of the Assets of the
             Calvert Arizona Municipal Intermediate Fund,
             Calvert Michigan Municipal Intermediate Fund,
           Calvert New York Municipal Intermediate Fund and
           Calvert Pennsylvania Municipal Intermediate Fund
       (series of the Calvert Municipal Intermediate Fund, Inc.)

             Calvert Florida Municipal Intermediate Fund,
     (a series of First Variable Rate Fund for Government Income)

                  4550 Montgomery Avenue, Suite 1000N
                       Bethesda, Maryland 20814

                   By and In Exchange for Shares of

             Calvert National Municipal Intermediate Fund
         (a series of the Calvert Municipal Intermediate Fund)
                  4550 Montgomery Avenue, Suite 1000N
                       Bethesda, Maryland 20814

         This Statement of Additional Information, relating
specifically to the proposed transfer of all or substantially all of
the assets of the Calvert Arizona Municipal Intermediate Fund,
Calvert Florida Municipal Intermediate Fund, Calvert Michigan
Municipal Intermediate Fund, Calvert New York Municipal Intermediate
Fund and Calvert Pennsylvania Municipal Intermediate Fund in exchange
for shares of the Calvert National Municipal Intermediate Fund,
consists of this cover page, the Pro Forma Financial Information, and
the Statement of Additional Information of the Calvert Municipal
Intermediate Fund, dated April 30, 1997, attached hereto and
incorporated by reference.

         This Statement of Additional Information is not a
prospectus. A Prospectus/Proxy Statement dated [DATE], relating to
the above-referenced matter may be obtained from Calvert Group, 4550
Montgomery Avenue, Suite 1000N, Bethesda, Maryland 20814.  This
Statement of Additional Information relates to, and should be read in
conjunction with, such Prospectus/Proxy Statement.

         The date of this Statement of Additional Information is
April 30, 1997, as revised [DATE].

<PAGE>



STATEMENT OF ADDITIONAL INFORMATION

April 30, 1997

                  CALVERT NATIONAL MUNICIPAL INTERMEDIATE FUND
                4550 Montgomery Avenue, Bethesda, Maryland 20814

New Account     (800) 368-2748
Information:    (301) 951-4820

Shareholder
Services:       (800) 368-2745

Broker          (800) 368-2746
Services:       (301) 951-4850

TDD for the Hearing-
Impaired:       (800) 541-1524



     This  Statement of Additional  Information  is not a prospectus.  Investors
should read the  Statement of Additional  Information  in  conjunction  with the
Prospectus,  dated  April  30,  1997,  which may be  obtained  free of charge by
sending a request to the above address or calling the telephone  numbers  listed
above. 
                              INVESTMENT OBJECTIVE


     National  Municipal  is designed to provide  individual  and  institutional
investors  with the highest level of interest  income exempt from federal income
taxes as is  consistent  with prudent  investment  management,  preservation  of
capital,  and the quality and maturity  characteristics of the Series. There is,
of course,  no  assurance  that the Series  will be  successful  in meeting  its
investment  objective;  there  are  inherent  risks  in  the  ownership  of  any
investment.
     Dividends  paid by National  Municipal will fluctuate with income earned on
investments.  In addition, the dividends and distributions paid and the value of
each share will vary by class of shares;  the value of its shares will fluctuate
to reflect  changes in the market value of the Series'  investments.  The Series
will attempt, through careful management,  to reduce these risks and enhance the
opportunities for higher income and greater price stability.

                               INVESTMENT POLICIES

     National  Municipal  invests  primarily  in a  nondiversified  portfolio of
municipal  obligations,  including  some with  interest  that may be  subject to
alternative minimum tax. The average dollar-weighted  maturity of investments is
between  3  and  10  years.  Fixed  rate  investments  normally  have  remaining
maturities  of 12 years or  less;  variable  rate  investments  may have  longer
maturities.  A complete explanation of municipal  obligations and municipal bond
and note ratings appears in the Appendix.
     Under normal market conditions, National Municipal will invest at least 65%
of its total assets in municipal  obligations  with interest that is exempt from
federal  income tax. To the extent the  obligations  are issued by your state of
residence, you may also be exempt from certain state and local income taxes.

Variable Rate Demand Notes
     The Board of Directors of Calvert  Municipal  Fund,  Inc. (the "Fund"),  of
which National Municipal is a series,  has approved  investments in floating and
variable rate demand notes upon the following  conditions:  the Series has right
of demand,  upon notice not to exceed thirty days, against the issuer to receive
payment;  the issuer will be able to make payment upon such demand,  either from
its own resources or through an unqualified  commitment from a third party;  and
the rate of interest  payable is  calculated  to ensure that the market value of
such notes will  approximate  par value on the adjustment  dates.  The remaining
maturity of such demand notes is deemed the period  remaining until such time as
the Series has the right to dispose of the notes at a price  which  approximates
par and  market  value.  Notes with a right of demand  exceeding  seven days are
considered illiquid and are subject to purchase restrictions.

Municipal Leases
     National   Municipal  may  invest  in  municipal   leases,   or  structured
instruments  where the  underlying  security is a municipal  lease.  A municipal
lease is an obligation of a government or governmental authority, not subject to
voter approval,  used to finance capital projects or equipment  acquisitions and
payable  through  periodic  rental  payments.  National  Municipal  may purchase
unrated  leases.  The  Fund's  Advisor,  under the  supervision  of the Board of
Trustees/Directors,  is responsible  for  determining the credit quality of such
leases on an ongoing basis,  including an assessment of the likelihood  that the
lease will not be canceled.  Certain municipal leases may be considered illiquid
and subject to National Municipal's limit on illiquid  securities.  The Board of
Trustees/Directors  has  directed  the Advisor to treat a  municipal  lease as a
liquid  security if it satisfies the following  conditions:  (A) such  treatment
must be consistent with National Municipal's  investment  restrictions;  (B) the
Advisor  should  be able to  conclude  that the  obligation  will  maintain  its
liquidity  throughout  the time it is held by National  Municipal,  based on the
following  factors:  (1) whether the lease may be terminated by the lessee;  (2)
the  potential  recovery,  if  any,  from a sale  of the  leased  property  upon
termination of the lease;  (3) the lessee's  general credit strength (e.g.,  its
debt, administrative, economic and financial characteristics and prospects); (4)
the likelihood that the lessee will  discontinue  appropriating  funding for the
leased  property  because the  property  is no longer  deemed  essential  to its
operations (e.g., the potential for an "event of nonappropriation"), and (5) any
credit enhancement or legal recourse provided upon an event of  nonappropriation
or other  termination of the lease; (C) the Advisor should determine whether the
obligation  can be disposed of within seven days in the ordinary  course of
business at approximately  the amount at which National  Municipal has valued it
for purposes of calculating  National  Municipal's net asset value,  taking into
account the following  factors:  (1) the frequency of trades and quotes; (2) the
volatility of quotations and trade prices;  (3) the number of dealers willing to
purchase or sell the security and the number of potential purchasers; (4) dealer
undertakings  to make a market in the  security;  (5) the nature of the security
and the nature of the  marketplace  trades (e.g.,  the time needed to dispose of
the  security,  the  method  of  soliciting  offers,  and the  mechanics  of the
transfer);  (6) the  rating of the  security  and the  financial  condition  and
prospects of the issuer; and (7) other factors relevant to National  Municipal's
ability to dispose of the security;  and (D) the Advisor should have  reasonable
expectations  that the municipal  lease  obligation  will maintain its liquidity
throughout the time the instrument is held by National Municipal.

Temporary Investments
     Short-term  money market type  investments  consist of:  obligations of the
U.S. Government, its agencies and instrumentalities;  certificates of deposit of
banks with  assets of one  billion  dollars or more;  commercial  paper or other
corporate notes of  investment-grade  quality;  and any of such items subject to
short-term repurchase agreements.

When-Issued Purchases
     Securities  purchased on a  when-issued  basis and the  securities  held in
National  Municipal's  portfolio are subject to changes in market value based on
the public's perception of the creditworthiness of the issuer and changes in the
level of interest rates (which will  generally  result in both changing in value
in the same way,  i.e.,  both  experiencing  appreciation  when  interest  rates
decline and depreciation  when interest rates rise).  Therefore,  if in order to
achieve higher interest income,  National Municipal remains  substantially fully
invested  at the same time that it has  purchased  securities  on a  when-issued
basis,  there will be a greater  possibility that the market value of its assets
may vary. No new  when-issued  commitments  will be made if more than 50% of the
Series' net assets would become so committed.
     When the time comes to pay for when-issued  securities,  National Municipal
will meet its obligations  from then available cash flow, sale of securities or,
although it would not  normally  expect to do so,  from sale of the  when-issued
securities  themselves  (which may have a market value  greater or less than the
Series' payment obligation). Sale of securities to meet such obligations carries
with it a greater  potential for the  realization  of capital losses and capital
gains which are not exempt from federal income tax.


Transactions in Futures Contracts
     National Municipal may engage in the purchase and sale of futures contracts
on an index of municipal  bonds or on U.S.  Treasury  securities,  or options on
such futures  contracts,  for hedging and substitution  purposes only.  National
Municipal may sell such futures  contracts in  anticipation  of a decline in the
cost of  municipal  bonds it holds or may  purchase  such  futures  contracts in
anticipation of an increase in the value of municipal  bonds National  Municipal
intends to acquire.  National  Municipal also is authorized to purchase and sell
other financial futures contracts which in the opinion of the Investment Advisor
provide an appropriate hedge for some or all of National Municipal's securities.
     Because of low initial  margin  deposits made upon the opening of a futures
position,  futures  transactions  involve  substantial  leverage.  As a  result,
relatively  small  movements in the price of the futures  contract can result in
substantial  unrealized gains or losses.  Because National Municipal will engage
in the purchase and sale of financial  futures  contracts solely for hedging and
substitution  purposes,  however,  any losses  incurred in connection  therewith
should,  if the  strategy  is  successful,  be  offset  in  whole  or in part by
increases in the value of securities held by National  Municipal or decreases in
the price of securities National Municipal intends to acquire.
     Municipal bond index futures contracts  commenced trading in June 1985, and
it is possible that trading in such futures  contracts  will be less liquid than
that in other futures  contracts.  The trading of futures  contracts and options
thereon is subject to certain market risks, such as trading halts,  suspensions,
exchange or clearing house equipment failures,  government intervention or other
disruptions of normal trading  activity,  which could at times make it difficult
or impossible to liquidate existing positions.
     The  liquidity of a secondary  market in futures  contracts  may be further
adversely affected by "daily price fluctuation  limits"  established by contract
markets,  which  limit  the  amount  of  fluctuation  in the  price of a futures
contract or option thereon during a single trading day. Once the daily limit has
been  reached in the  contract,  no trades may be entered into at a price beyond
the limit, thus preventing the liquidation of open positions. Prices of existing
contracts  have in the past  moved  the daily  limit on a number of  consecutive
trading days.  National Municipal will enter into a futures position only if, in
the judgment of the Investment  Advisor,  there appears to be an actively traded
secondary market for such futures contracts.
     The successful use of transactions in futures contracts and options thereon
depends on the  ability of the  Investment  Advisor to  correctly  forecast  the
direction and extent of price movements of these  instruments,  as well as price
movements  of the  securities  held by  National  Municipal  within a given time
frame.  To the extent these prices  remain  stable  during the period in which a
futures or option contract is held by National Municipal, or move in a direction
opposite  to that  anticipated,  National  Municipal  may  realize a loss on the
hedging transaction which is not fully or partially offset by an increase in the
value of National  Municipal's  securities.  As a result,  National  Municipal's
total  return  for such  period  may be less than if it had not  engaged  in the
hedging transaction.


Description of Financial Futures Contracts 
     Futures Contracts. A futures contract obligates the seller of a contract to
deliver  and the  purchaser  of a  contract  to  take  delivery  of the  type of
financial instrument called for in the contract or, in some instances, to make a
cash settlement,  at a specified future time for a specified price. Although the
terms of a contract call for actual delivery or acceptance of securities, or for
a cash  settlement,  in most  cases the  contracts  are  closed  out  before the
delivery  date  without  the  delivery  or  acceptance  taking  place.  National
Municipal  intends to close out any futures contracts prior to the delivery date
of such contracts.
     National  Municipal may sell futures contracts in anticipation of a decline
in the value of its investments in municipal bonds. The loss associated with any
such decline could be reduced  without  employing  futures as a hedge by selling
long-term  securities  and either  reinvesting  the proceeds in securities  with
shorter maturities or by holding assets in cash. This strategy, however, entails
increased  transaction  costs in the form of  brokerage  commissions  and dealer
spreads and will  typically  reduce  National  Municipal's  average  yields as a
result of the shortening of maturities.
     The  purchase or sale of a futures  contract  differs  from the purchase or
sale of a security, in that no price or premium is paid or received. Instead, an
amount  of  cash  or  securities  acceptable  to  National  Municipal's  futures
commission  merchant  and the  relevant  contract  market,  which  varies but is
generally  about 5% or less of the contract  amount,  must be deposited with the
broker.  This amount is known as "initial margin," and represents a "good faith"
deposit  assuring the performance of both the purchaser and the seller under the
futures  contract.  Subsequent  payments  to  and  from  the  broker,  known  as
"variation margin," are required to be made on a daily basis as the price of the
futures contract  fluctuates,  making the long or short positions in the futures
contract  more or less  valuable,  a process  known as "marking to the  market."
Prior to the settlement date of the futures contract, the position may be closed
out by taking an opposite  position which will operate to terminate the position
in the futures contract. A final determination of variation margin is then made,
additional  cash is required  to be paid to or  released by the broker,  and the
purchaser  realizes a loss or gain.  In addition,  a commission  is paid on each
completed purchase and sale transaction.
     The sale of financial  futures  contracts  provides an alternative means of
hedging National  Municipal  against declines in the value of its investments in
municipal  bonds.  As such values  decline,  the value of  National  Municipal's
position in the futures contracts will tend to increase,  thus offsetting all or
a portion of the depreciation in the market value of National  Municipal's fixed
income  investments which are being hedged.  While National Municipal will incur
commission   expenses  in  establishing  and  closing  out  futures   positions,
commissions on futures  transactions may be significantly lower than transaction
costs incurred in the purchase and sale of fixed income securities. In addition,
the  ability  of  National  Municipal  to  trade in the  standardized  contracts
available in the futures market may offer a more effective hedging strategy than
a program to reduce the average  maturing of  portfolio  securities,  due to the
unique and varied credit and  technical  characteristics  of the municipal  debt
instruments  available to National  Municipal.  Employing futures as a hedge may
also permit National  Municipal to assume a hedging posture without reducing the
yield on its  investments,  beyond  any  amounts  required  to engage in futures
trading.
     National Municipal may engage in the purchase and sale of futures contracts
on an index of municipal securities.  These instruments provide for the purchase
or sale of a  hypothetical  portfolio of  municipal  bonds at a fixed price in a
stated delivery month. Unlike most other futures contracts, however, a municipal
bond index futures  contract does not require actual  delivery of securities but
results in a cash  settlement  based upon the  difference  in value of the index
between the time the contract was entered into and the time it is liquidated.
     The municipal  bond index  underlying the futures  contracts  traded by the
Portfolio is The Bond Buyer  Municipal  Bond Index,  developed by The Bond Buyer
and the Chicago Board of Trade ("CBT"), the contract market on which the futures
contracts  are traded.  As  currently  structured,  the index is comprised of 40
tax-exempt  term  municipal  revenue and  general  obligation  bonds.  Each bond
included in the index must be rated  either A- or higher by Standard & Poor's or
A or higher by Moody's Investors  Service and must have a remaining  maturity of
19  years  or  more.  Twice  a  month  new  issues  satisfying  the  eligibility
requirements  are added to, and an equal  number of old  issues  will be deleted
from, the index. The value of the index is computed daily according to a formula
based  upon  the  price  of  each  bond  in the  index,  as  evaluated  by  four
dealer-to-dealers brokers.
     National  Municipal  may also  purchase and sell futures  contracts on U.S.
Treasury bills,  notes and bonds for the same types of hedging and  substitution
purposes. Such futures contracts provide for delivery of the underlying security
at a  specified  future  time for a fixed  price,  and the value of the  futures
contract therefore generally fluctuates with movements in interest rates.
     The  municipal  bond index  futures  contract,  futures  contracts  on U.S.
Treasury securities and options on such futures contracts are traded on the CBT,
which,  like other contract  markets,  assures the performance of the parties to
each futures contract through a clearing corporation,  a nonprofit  organization
managed by the exchange membership, which is also responsible for handling daily
accounting of deposits or withdrawals of margin.
     National  Municipal may also purchase  financial futures contracts when not
fully invested in municipal bonds, in anticipation of an increase in the cost of
securities  National  Municipal  intends to  purchase.  As such  securities  are
purchased,  an equivalent  amount of futures  contracts will be closed out. In a
substantial  majority of these  transactions,  National  Municipal will purchase
municipal  bonds upon  termination  of the  futures  contracts.  Due to changing
market conditions and interest rate forecasts,  however,  a futures position may
be terminated without a corresponding purchase of securities.  Nevertheless, all
purchases of futures contracts by National  Municipal will be subject to certain
restrictions, described below.
     Options on Futures Contracts.  An option on a futures contract provides the
purchaser with the right, but not the obligation,  to enter into a long position
in the underlying futures contract (that is, purchase the futures contract),  in
the case of a "call" option, or a short position (sell the futures contract), in
the case of a "put" option,  for a fixed price up to a stated  expiration  date.
The option is purchased for a  non-refundable  fee, known as the "premium." Upon
exercise of the option, the contract market clearing house assigns each party to
the option an opposite position in the underlying futures contract. In the event
of exercise,  therefore,  the parties are subject to all of the risks of futures
trading,  such as payment of initial and  variation  margin.  In  addition,  the
seller,  or  "writer,"  of the option is subject to margin  requirements  on the
option  position.  Options on futures  contracts are traded on the same contract
markets as the underlying futures contracts.
     National  Municipal may purchase options on futures  contracts for the same
types of purposes  described  above in connection  with futures  contracts.  For
example,  in order to  protect  against an  anticipated  decline in the value of
securities it holds,  National  Municipal  could purchase put options on futures
contracts,  instead of selling the underlying futures contracts.  Conversely, in
order to protect  against the adverse  effects of  anticipated  increases in the
costs of  securities  to be acquired,  National  Municipal  could  purchase call
options on futures  contracts,  instead of  purchasing  the  underlying  futures
contracts.  National Municipal  generally will sell options on futures contracts
only to close out an existing position.
     National  Municipal  will not engage in  transactions  in such  instruments
unless and until the Investment  Advisor  determines that market  conditions and
the  circumstances  of National  Municipal  warrant such trading.  To the extent
National  Municipal  engages in the  purchase  and sale of futures  contracts or
options  thereon,  it will do so only at a  level  which  is  reflective  of the
Investment  Advisor's  view of the  hedging  needs of  National  Municipal,  the
liquidity of the market for futures  contracts and the  anticipated  correlation
between  movements in the value of the futures or option  contract and the value
of securities held by National Municipal.
     Restrictions  on the  Use of  Futures  Contracts  and  Options  on  Futures
Contracts.  Under  regulations  of  the  Commodity  Futures  Trading  Commission
("CFTC"),  the futures trading  activities  described  herein will not result in
National  Municipal being deemed to be a "commodity pool," as defined under such
regulations,  provided  that  certain  trading  restrictions  are adhered to. In
particular,  CFTC  regulations  require  that all futures  and option  positions
entered into by National Municipal qualify as bona fide hedge  transactions,  as
defined  under CFTC  regulations,  or, in the case of long  positions,  that the
value of such positions not exceed an amount of segregated  funds  determined by
reference  to certain  cash and  securities  positions  maintained  by  National
Municipal and accrued  profits on such  positions.  In addition,  as a matter of
operating policy, National Municipal may not purchase or sell a futures contract
or an  option  thereon  if,  immediately  thereafter,  the sum of the  amount of
initial margin deposits on National  Municipal's  existing futures positions and
premiums on such options would exceed 5% of its net assets.
     When National Municipal  purchases a futures contract,  it will maintain an
amount of cash, cash equivalents (for example, commercial paper and daily tender
adjustable  notes)  or  short-term  high-grade  fixed  income  securities  in  a
segregated account with National  Municipal's  custodian,  so that the amount so
segregated  plus the amount of initial and variation  margin held in the account
of its broker equals the market value of the futures contract,  thereby ensuring
that the use of such futures is unleveraged.
     Risk Factors in Transactions in Futures Contracts. The particular municipal
bonds  comprising the index underlying the municipal bond index futures contract
may vary from the bonds held by National Municipal.  In addition, the securities
underlying futures contracts on U.S. Treasury securities will not be the same as
securities held by National Municipal. As a result, National Municipal's ability
effectively  to hedge  all or a  portion  of the  value of its  municipal  bonds
through the use of futures  contracts will depend in part on the degree to which
price  movements  in the index  underlying  the  municipal  bond  index  futures
contract,  or the U.S.  Treasury  securities  underlying other futures contracts
trade,  correlate with price  movements of the municipal  bonds held by National
Municipal.
     For example,  where prices of securities in National  Municipal do not move
in the same  direction or to the same extent as the values of the  securities or
index underlying a futures  contract,  the trading of such futures contracts may
not effectively hedge National Municipal's investments and may result in trading
losses.  The correlation may be affected by disparities in the average maturity,
ratings,  geographical mix or structure of National  Municipal's  investments as
compared  to those  comprising  the index,  and general  economic  or  political
factors.  In addition,  the  correlation  between  movements in the value of the
index  underlying  a futures  contract  may be subject to change  over time,  as
additions to and deletions  from the index alter its  structure.  In the case of
futures  contracts  on  U.S.  Treasury  securities  and  options  thereon,   the
anticipated  correlation of price movements between the U.S. Treasury securities
underlying the futures or options and municipal bonds may be adversely  affected
by economic, political,  legislative or other developments that have a disparate
impact on the  respective  markets  for such  securities.  In the event that the
Investment  Advisor  determines to enter into  transactions in financial futures
contracts  other than the municipal  bond index  futures  contract or futures on
U.S. Treasury securities, the risk of imperfect correlation between movements in
the prices of such futures  contracts and the prices of municipal  bonds held by
National Municipal may be greater.
     The  trading of futures  contracts  on an index  also  entails  the risk of
imperfect correlation between movements in the price of the futures contract and
the value of the underlying index. The anticipated spread between the prices may
be distorted  due to  differences  in the nature of the markets,  such as margin
requirements,  liquidity and the  participation  of  speculators  in the futures
markets. The risk of imperfect correlation, however, generally diminishes as the
delivery month specified in the futures contract approaches.
     Prior to exercise or expiration, a position in futures contracts or options
thereon  may be  terminated  only by  entering  into a closing  purchase or sale
transaction.  This requires a secondary market on the relevant  contract market.
National  Municipal  will enter into a futures or option  position only if there
appears  to be a liquid  secondary  market  therefor,  although  there can be no
assurance  that such a liquid  secondary  market  will exist for any  particular
contract  at any  specific  time.  Thus,  it may not be  possible to close out a
position  once it has  been  established.  Under  such  circumstances,  National
Municipal could be required to make continuing  daily cash payments of variation
margin in the event of adverse price movements.  In such situation,  if National
Municipal has insufficient cash, it may be required to sell portfolio securities
to  meet  daily  variation  margin  requirements  at  a  time  when  it  may  be
disadvantageous  to do so. In addition,  National  Municipal  may be required to
perform  under  the  terms of the  futures  or option  contracts  it holds.  The
inability to close out futures or options  positions  also could have an adverse
impact on National Municipal's ability effectively to hedge its portfolio.
     When National Municipal purchases an option on a futures contract, its risk
is  limited  to the  amount of the  premium,  plus  related  transaction  costs,
although this entire  amount may be lost.  In addition,  in order to profit from
the  purchase  of an option on a futures  contract,  National  Municipal  may be
required to exercise the option and liquidate the underlying  futures  contract,
subject to the availability of a liquid secondary market. The trading of options
on futures  contracts  also  entails  the risk that  changes in the value of the
underlying  futures  contract  will not be fully  reflected  in the value of the
option,  although the risk of imperfect  correlation generally tends to diminish
as the maturity date of the futures  contract or  expiration  date of the option
approaches.
     "Trading  Limits" or  "Position  Limits" may also be imposed on the maximum
number of contracts which any person may hold at a given time. A contract market
may order the  liquidation of positions found to be in violation of these limits
and it may impose other sanctions or restrictions.  The Investment  Advisor does
not believe that trading  limits will have any adverse  impact on the strategies
for hedging the National Municipal's investments.
     Further,  the  trading of futures  contracts  is subject to the risk of the
insolvency  of a  brokerage  firm or clearing  corporation,  which could make it
difficult or impossible  to liquidate  existing  positions or to recover  excess
variation margin payments.
     In  addition  to the risks of  imperfect  correlation  and lack of a liquid
secondary market for such instruments, transactions in futures contracts involve
risks  related to leveraging  and the  potential for incorrect  forecasts of the
direction and extent of interest rate movements within a given time frame.

Credit Quality

     As an operating policy,  National Municipal may not invest more than 35% of
its net assets in non-investment  grade municipal  obligations.  As has been the
industry practice,  this determination of credit quality is made at the time the
Series acquires the obligation.  However, because it is possible that subsequent
downgrades  could occur,  if an obligation  held by National  Municipal is later
downgraded, the Advisor, under the supervision of the Fund's Board of Directors,
will consider  whether it is in the best interest of the shareholders to hold or
to dispose of the  obligation.  Among the criteria that may be considered by the
Advisor and the Board are the probability  that the obligations  will be able to
make  scheduled  interest and  principal  payments in the future,  the extent to
which any  devaluation  of the  obligation  has already  been  reflected  in the
Series'  net asset  value,  and the total  percentage,  if any,  of  obligations
currently rated below investment-grade held by National Municipal.
     Noninvestment-grade   securities   have  moderate  to  poor  protection  of
principal  and interest  payments  and have  speculative  characteristics.  They
involve greater risk of default or price declines due to changes in the issuer's
creditworthiness than  investment-grade debt securities.  Because the market for
lower-rated  securities  may be thinner and less  active  than for  higher-rated
securities,  there may be market  price  volatility  for  these  securities  and
limited  liquidity in the resale market.  Market prices for these securities may
decline  significantly  in  periods  of general  economic  difficulty  or rising
interest rates.
                             INVESTMENT RESTRICTIONS

Fundamental Investment Restrictions

     The  foregoing   investment   objective  and  policies  and  the  following
investment  restrictions and fundamental policies may not be changed without the
consent of the holders of a majority of National Municipal's outstanding shares.
Shares have equal rights as to voting. A majority of the shares means the lesser
of (i) 67% of the shares  represented at a meeting at which more than 50% of the
outstanding  shares  are  represented  or (ii) more than 50% of the  outstanding
shares. National Municipal may not:
     1) Purchase  common stocks,  preferred  stocks,  warrants,  or other equity
securities;
     2)  Issue  senior  securities,   borrow  money,  or  pledge,  mortgage,  or
hypothecate  its assets,  except as may be necessary to secure  borrowings  from
banks for temporary or emergency (not leveraging) purposes and then in an amount
not greater than 10% of the value of the Series' total assets at the time of the
borrowing.  Investment securities will not be purchased while any borrowings are
outstanding;
     3) Make loans other than through the  purchase of money market  instruments
and repurchase agreements or by the purchase of bonds,  debentures or other debt
securities.  The  purchase  by a  Portfolio  of all or a portion  of an issue of
publicly or  privately  distributed  debt  obligations  in  accordance  with its
investment objective, policies and restrictions, shall not constitute the making
of a loan.
     4) Underwrite the  securities of other  issuers,  except to the extent that
the purchase of municipal  obligations in accordance with the Series' investment
objective and policies,  either directly from the issuer, or from an underwriter
for an issuer, may be deemed an underwriting;
     5)   
Purchase  or  sell  in  real  estate,   real  estate  investment  trust
securities,  or oil and gas  interests,  but this  shall  not  prevent  National
Municipal  from  investing  in municipal  obligations  secured by real estate or
interests therein; 
     6)   
Purchase  or sell  physical  commodities  except that it may enter into
futures contracts and options thereon; 
     7) Purchase or retain  securities  of an issuer if those  directors  of the
Fund,  each of whom owns more than 1/2 of 1% of the  outstanding  securities  of
such issuer, together own more than 5% of such outstanding securities;
     8) Invest in companies for the purpose of exercising control; or invest in
securities of other investment companies, except as they may be acquired as part
of a merger,  consolidation  or acquisition of assets,  or in connection  with a
trustee's/director's  deferred  compensation  plan,  as  long  as  there  is  no
duplication of advisory fees;
     9)  Invest  25% or  more  of its  assets  in any  particular  industry  or
industries.  Industrial  development  bonds,  where the payment of principal and
interest  is the  responsibility  of  companies  within the same  industry,  are
grouped together as an "industry."

Nonfundamental Investment Restrictions

     The Series has  adopted  the  following  operating  (i.e.,  nonfundamental)
investment  policies  and  restrictions  which  may be  changed  by the Board of
Directors without shareholder approval. National Municipal may not:
     1) Purchase  illiquid  securities  if more than 15% of the value of its net
assets would be invested in such securities;
     2) Invest more than 5% of the value of its total assets in securities where
the payment of  principal  and  interest is the  responsibility  of a company or
companies with less than three years' operating history.
     3)    
Purchase or sell a futures  contract or an option thereon if immediately
thereafter,  the sum of the amount of initial  margin  deposits  on futures  and
premiums on such options would exceed 5% of the Fund's net assets; 
     4)  
Invest in puts or calls on a security, including straddles,  spreads, or
any combination,  if the value of that option premium,  when aggregated with the
premiums on all other options on securities held by the Fund,  exceeds 5% of the
Fund's total assets. 
     5)   
Effect  short sales of  securities.  For  purposes of this  restriction,
transactions  in futures  contracts  and  options  are not deemed to  constitute
selling securities short. 
     6)  
Purchase securities on margin,  except that it may make margin deposits
in connection with futures contacts or options on futures. 

                       PURCHASES AND REDEMPTIONS OF SHARES

     Share  certificates  will be issued at no charge if requested in writing by
the  investor.  No  certificates  will be  issued  for  fractional  shares  (see
Prospectus, "How to Sell Your Shares").
     To change redemption  instructions already given,  shareholders must send a
written notice to Calvert Group,  c/o NFDS, 6th Floor,  1004  Baltimore,  Kansas
City, MO 64105,  with a voided copy of a check for the bank wiring  instructions
to be added. If a voided check does not accompany the request,  then the request
must be signature guaranteed by a commercial bank, savings and loan association,
trust  company,  member firm of any  national  securities  exchange,  or certain
credit  unions.   Further  documentation  may  be  required  from  corporations,
fiduciaries, and institutional investors.
     The right of redemption  may be suspended or the date of payment  postponed
for any period  during which the New York Stock  Exchange is closed  (other than
customary  weekend and  holiday  closings),  when  trading on the New York Stock
Exchange is restricted,  or an emergency exists, as determined by the SEC, or if
the Commission has ordered such a suspension for the protection of shareholders.
Redemption  proceeds are normally  mailed or wired the next business day after a
proper  redemption  request  has been  received,  unless  redemptions  have been
suspended or postponed as described above.
     Redemption proceeds are normally paid in cash. However,  National Municipal
has the right to redeem shares in assets other than cash for redemption  amounts
exceeding,  in any  90-day  period,  $250,000  or 1% of the net  asset  value of
National Municipal, whichever is less.


Reduced Sales Charges
     National  Municipal imposes reduced sales charges in certain  situations in
which the Principal  Underwriter  (which offers the Series' shares  continuously
and on a "best efforts" basis) and the dealers selling National Municipal shares
may expect to realize significant economies of scale with respect to such sales.
Generally, sales costs do not increase in proportion to the dollar amount of the
shares  sold;  for example,  the  per-dollar  transaction  cost for a sale to an
investor of shares  worth $5,000 is  generally  much higher than the  per-dollar
cost for a sale of shares worth  $1,000,000.  Thus, the applicable  sales charge
declines  as a  percentage  of the  dollar  amount of shares  sold as the dollar
amount increases.
     When a shareholder agrees to make purchases of shares over a period of time
totaling a certain dollar amount pursuant to a Letter of Intent, the Underwriter
and selling  dealers can expect to realize the economies of scale  applicable to
that stated goal amount.  Thus the Series imposes the sales charge applicable to
the goal amount.  Similarly, the Underwriter and selling dealers also experience
cost  savings  when  dealing  with  existing  National  Municipal  shareholders,
enabling the Series to afford existing  shareholders  the Right of Accumulation.
The  Underwriter  and selling  dealers can also expect to realize  economies  of
scale when making sales to the members of certain  qualified  groups which agree
to facilitate  distribution of the Series' shares to their members. See "Exhibit
A - Reduced Sales Charges" in the Prospectus.

                           DIVIDENDS AND DISTRIBUTIONS

     National Municipal declares and pays monthly dividends of its net income to
shareholders  of record as of the close of business on each  designated  monthly
record date.  Dividends  and  distributions  will differ among the classes.  Net
investment  income  consists  of  the  interest  income  earned  on  investments
(adjusted for  amortization  of original  issue  discounts or premiums or market
premiums),  less estimated  expenses.  Capital gains,  if any, are normally paid
once  a year  and  will  be  automatically  reinvested  at net  asset  value  in
additional shares.  Dividends and any distributions are automatically reinvested
in additional  shares of the Fund, unless you elect to have the dividends of $10
or more paid in cash (by check or by  Calvert  Money  Controller).  You may also
request to have your  dividends and  distributions  from the Series  invested in
shares of any other Calvert Group Fund, at no additional charge. If you elect to
have dividends  and/or  distributions  paid in cash, and the U.S. Postal Service
cannot deliver the check, or if it remains uncashed for six months,  it, as well
as future dividends and distributions, will be reinvested in additional shares.

                                   TAX MATTERS


     In 1996  National  Municipal  did  qualify and in 1997  National  Municipal
intends to qualify as a "regulated investment company" under Subchapter M of the
Internal Revenue Code as amended (the "Code"). By so qualifying,  it will not be
subject to federal  income tax, nor to the federal excise tax imposed by the Tax
Reform  Act of 1986 (the  "Act"),  to the  extent  that it  distributes  its net
investment income and realized capital gains. 
     National   Municipal's   dividends  of  net  investment  income  constitute
exempt-interest  dividends on which  shareholders  are not generally  subject to
federal income tax; however under the Act, dividends attributable to interest on
certain private activity bonds must be included in federal  alternative  minimum
taxable income for the purpose of determining liability (if any) for individuals
and for  corporations.  National  Municipal's  dividends  derived  from  taxable
interest and  distributions  of net short-term  capital gains,  whether taken in
cash or reinvested in additional shares, are taxable to shareholders as ordinary
income and do not qualify for the dividends received deduction for corporations.
If you held  shares for six months or less,  losses must be offset by the amount
of  exempt-interest  dividends you received,  and, to the extent of capital gain
distributions  you  received,  the loss amount not offset  (disallowed)  must be
treated as long-term capital loss.
     A  shareholder  may  also be  subject  to some  state  and  local  taxes on
dividends  and  distributions.   National  Municipal  will  notify  shareholders
annually about the tax status of dividends and distributions  paid by the Series
and the amount of dividends withheld, if any, during the previous year.
     The Code provides that  interest on  indebtedness  incurred or continued in
order to  purchase  or carry  shares of a  regulated  investment  company  which
distributes  exempt-interest  dividends  during  the  year  is  not  deductible.
Furthermore, entities or persons who are "substantial users" (or persons related
to "substantial  users") of facilities financed by private activity bonds should
consult their tax advisors before  purchasing  shares of the Fund.  "Substantial
user" is generally defined as including a "nonexempt  person" who regularly uses
in trade or business a part of a facility  financed from the proceeds of private
activity bonds.
     Investors  should note that the Code may require  investors  to exclude the
initial sales charge, if any, paid on the purchase of National  Municipal shares
from the tax basis of those  shares if the  shares are  exchanged  for shares of
another Calvert Group Fund within 90 days of purchase.  This requirement applies
only to the extent that the payment of the  original  sales charge on the shares
of the Series  causes a reduction in the sales charge  otherwise  payable on the
shares of the Calvert  Group Fund  acquired in the  exchange,  and investors may
treat sales charges excluded from the basis of the original sales as incurred to
acquire the new shares.
     National Municipal may be required to withhold 31% of any long-term capital
gain dividends and 31% of each  redemption  transaction  occurring in the Series
if:  (a)  the   shareholder's   social   security   number  or  other   taxpayer
identification  number ("TIN") is not provided or an obviously  incorrect TIN is
provided;  (b) the shareholder  does not certify under penalties of perjury that
the TIN provided is the  shareholder's  correct TIN and that the  shareholder is
not  subject  to backup  withholding  under  section  3406(a)(1)(C)  of the Code
because of underreporting  (however,  failure to provide certification as to the
application of section  3406(a)(1)(C)  will result only in backup withholding on
capital gain dividends, not on redemptions);  or (c) the Fund is notified by the
Internal  Revenue  Service that the TIN provided by the shareholder is incorrect
or  that  there  has  been  underreporting  of  interest  or  dividends  by  the
shareholder.  Affected  shareholders  will receive  statements at least annually
specifying the amount withheld.
     In  addition,  the Series is  required  to report to the  Internal  Revenue
Service the following  information  with respect to redemption  transactions  in
National  Municipal:  (a) the shareholder's  name,  address,  account number and
taxpayer  identification  number; (b) the total dollar value of the redemptions;
and (c) the Series' identifying CUSIP number.
     Certain  shareholders are, however,  exempt from the backup withholding and
broker  reporting  requirements.   Exempt  shareholders  include:  corporations;
financial institutions;  tax-exempt organizations;  individual retirement plans;
the U.S.,  a State,  the  District of  Columbia,  a U.S.  possession,  a foreign
government, an international organization, or any political subdivision, agency,
or  instrumentality  of any of the  foregoing;  U.S.  registered  commodities or
securities  dealers;  real  estate  investment  trusts;   registered  investment
companies;  bank common  trust funds;  certain  charitable  trusts;  and foreign
central  banks of issue.  Nonresident  aliens also are  generally not subject to
either  requirement  but, along with certain  foreign  partnerships  and foreign
corporations,  may instead be subject to  withholding  under section 1441 of the
Code.  Shareholders  claiming  exemption  from  backup  withholding  and  broker
reporting should call or write the Fund for further information.

                               VALUATION OF SHARES

     National  Municipal's  assets are valued  utilizing  the average bid dealer
market quotation as furnished by an independent pricing service.  Securities and
other assets for which market  quotations  are not readily  available are valued
based on the current market for similar  securities or assets,  as determined in
good  faith  by the  Fund's  Advisor  under  the  supervision  of the  Board  of
Directors.
     Valuations,  market quotations and market equivalents are provided by Kenny
S&P  Evaluation  Services,  a subsidiary of  McGraw-Hill.  The use of Kenny as a
pricing  service  by the Fund  has  been  approved  by the  Board of  Directors.
Valuations provided by Kenny are determined without exclusive reliance on quoted
prices and take into consideration  appropriate factors such as institution-size
trading in similar groups of securities,  yield, quality, coupon rate, maturity,
type of issue, trading characteristics, and other market data.

     National  Municipal  determines  the net asset  value for its shares  every
business day at the close of the regular  session of the New York Stock Exchange
(generally, 4:00 p.m. Eastern time), and at such other times as may be necessary
or  appropriate.  The  Series  does not  determine  net asset  value on  certain
national  holidays or other days on which the New York Stock Exchange is closed:
New Year's Day,  Presidents' Day, Good Friday,  Memorial Day,  Independence Day,
Labor Day, Thanksgiving Day and Christmas Day.

Net Asset Value and Offering Price Per Share
        
<TABLE>
<CAPTION>

Net asset value per share
          <S>                                                 <C>   

         ($45,611,937/4,318,970 shares)                       $10.56
         Maximum sales charge
         (2.75% of offering price)                              0.29
         Offering price per share                             $10.85 
</TABLE>



                      CALCULATION OF YIELD AND TOTAL RETURN


     National  Municipal  may  advertise  its "total  return."  Total  return is
historical in nature and is not intended to indicate future  performance.  Total
return will be quoted for the most recent one-year period, five-year period, and
period  from  inception  of  National  Municipal's  offering  of shares.  Return
quotations  for periods in excess of one year represent the average annual total
return for the period  included in the particular  quotation.  Total return is a
computation of National  Municipal's  dividend yield,  plus or minus realized or
unrealized capital appreciation or depreciation,  less fees and expenses.  Total
return quotations  reflect the deduction of National  Municipal's  maximum sales
charge  ("return  with maximum  load"),  except  quotations  of "return  without
maximum  load" which do not deduct the sales  charge.  Note:  "Total  Return" as
quoted in the Financial  Highlights section of the Series' Prospectus and Annual
Report  to  Shareholders,  however,  per  SEC  instructions,  does  not  reflect
deduction of the sales charge,  and corresponds to "return without maximum load"
as referred to herein.  Return without maximum load should be considered only by
investors,  such as  participants  in certain  pension plans,  to whom the sales
charge  does not apply,  or for  purposes  of  comparison  only with  comparable
figures which also do not reflect sales charges, such as Lipper averages.  Total
return is computed according to the following formula:

                                 P(1 + T)n = ERV

     where P = a hypothetical  initial payment of $1,000;  T = total return; n =
number of years; and ERV = the ending redeemable value of a hypothetical  $1,000
payment made at the  beginning of the 1, 5 or 10 year periods at the end of such
periods (or portions  thereof,  if applicable).  Returns for the one year period
and period from inception  (Class A, September 30, 1992; Class C, March 1, 1994)
are as follows:


<TABLE>
<CAPTION>
                  National Municipal    National Municipal
                  With Max. Load        W/O Max. Load
<S>               <C>                   <C>
One Year          1.46%                 4.32%
From Inception    5.59%                 6.28%
</TABLE>



     National  Municipal may also advertise its "yield" and "taxable  equivalent
yield." As with total  return,  both yield  figures are  historical  and are not
intended  to  indicate  future  performance.  "Yield"  quotations  for  National
Municipal  refer  to the  aggregate  imputed  yield-to-maturity  of  each of the
Series'  investments  based  on the  market  value as of the last day of a given
thirty-day or one-month  period less accrued  expenses  (net of  reimbursement),
divided by the average daily number of  outstanding  shares  entitled to receive
dividends  times the  maximum  offering  price on the last day of the period (so
that the effect of the sales charge is included in the calculation),  compounded
on a "bond  equivalent," or semi-annual,  basis.  Yield is computed according to
the following formula: 

                           Yield = 2[(a-b/cd +1)6 - 1]

     where a = dividends  and interest  earned  during the period;  b = expenses
accrued for the period (net of  reimbursement);  c = the average daily number of
shares  outstanding  during the period that were entitled to receive  dividends;
and d = the maximum offering price per share on the last day of the period.

     The taxable  equivalent yield is the yield an investor would be required to
obtain from taxable  investments to equal National  Municipal's  yield, all or a
portion of which may be exempt from federal income taxes. The taxable equivalent
yield is computed by taking the portion of the yield exempt from federal  income
taxes and  multiplying the exempt yield by a factor based on a stated income tax
rate,  then  adding the  portion of the yield  that is not exempt  from  federal
income taxes.  The factor which is used to calculate the tax equivalent yield is
the reciprocal of the difference  between 1 and the applicable  income tax rate,
which will be stated in the advertisement. 

     For the  thirty-day  period ended December 31, 1996,  National  Municipal's
yield was 4.38% and its tax  equivalent  yield was 6.84% for an  investor in the
36% federal  income tax bracket,  and 7.25% for an investor in the 39.6% federal
income tax bracket. 

                                   ADVERTISING

     The Fund or its affiliates may provide information such as, but not limited
to,  the  economy,  investment  climate,  investment  principles,   sociological
conditions and political ambiance. Discussion may include hypothetical scenarios
or lists of relevant factors designed to aid the investor in determining whether
the Series is compatible with the investor's  goals. The Fund may list portfolio
holdings  or give  examples  or  securities  that may have been  considered  for
inclusion in the Series, whether held or not.
     The Fund or its  affiliates  may supply  comparative  performance  data and
rankings from  independent  sources such as Donoghue's  Money Fund Report,  Bank
Rate Monitor,  Money, Forbes,  Lipper Analytical Services,  Inc., CDA Investment
Technologies,   Inc.,   Wiesenberger   Investment  Companies  Service,   Russell
2000/Small  Stock Index,  Mutual Fund Values  Morningstar  Ratings,  Mutual Fund
Forecaster,  Barron's,  The  Wall  Street  Journal,  and  Schabacker  Investment
Management,  Inc. Such averages  generally do not reflect any front- or back-end
sales charges that may be charged by Funds in that  grouping.  The Fund may also
cite to any source, whether in print or on-line, such as Bloomberg,  in order to
acknowledge  origin  of  information.  The  Series  may  compare  itself  or its
portfolio holdings to other  investments,  whether or not issued or regulated by
the securities industry,  including, but not limited to, certificates of deposit
and Treasury notes. The Fund, its Advisor,  and its affiliates reserve the right
to update performance rankings as new rankings become available.

                             DIRECTORS AND OFFICERS

        
     RICHARD L. BAIRD,  JR.,  Trustee.  Mr. Baird is Director of Finance for the
Family  Health  Council,   Inc.  in  Pittsburgh,   Pennsylvania,   a  non-profit
corporation which provides family planning services,  nutrition,  maternal/child
health  care,  and  various   health   screening   services.   Mr.  Baird  is  a
trustee/director  of each of the  investment  companies in the Calvert  Group of
Funds, except for Acacia Capital Corporation, Calvert New World Fund and Calvert
World Values Fund.  DOB:  05/09/48.  Address:  211 Overlook  Drive,  Pittsburgh,
Pennsylvania 15216. 
        
     FRANK H. BLATZ, JR., Esq., Trustee.  Mr. Blatz is a partner in the law firm
of Snevily,  Ely,  Williams,  Gurrieri & Blatz.  He was  formerly a partner with
Abrams,  Blatz, Gran,  Hendricks & Reina, P.A. DOB: 10/29/35.  Address: 308 East
Broad Street, PO Box 2007, Westfield, New Jersey 07091.
       
     FREDERICK T. BORTS, M.D.,  Trustee.  Dr. Borts is a radiologist with Kaiser
Permanente.  Prior to that, he was a radiologist at Bethlehem Medical Imaging in
Allentown,  Pennsylvania.  DOB:  07/23/49.  Address:  2040 Nuuanu  Avenue #1805,
Honolulu, Hawaii, 96817. 
       
     1 CHARLES E. DIEHL,  Trustee.  Mr. Diehl is Vice  President  and  Treasurer
Emeritus of the George  Washington  University,  and has retired from University
Support  Services,  Inc. of Herndon,  Virginia.  He is also a Director of Acacia
Mutual Life Insurance Company. DOB: 10/13/22.  Address: 1658 Quail Hollow Court,
McLean, Virginia 22101.
     
     DOUGLAS E. FELDMAN,  M.D.,  Trustee.  Dr.  Feldman  practices head and neck
reconstructive  surgery  in  the  Washington,   D.C.,  metropolitan  area.  DOB:
05/23/48. Address: 7536 Pepperell Drive, Bethesda, Maryland 20817. 

     PETER W. GAVIAN, CFA, Trustee. Mr. Gavian was a principal of Gavian De Vaux
Associates,  an  investment  banking  firm. He continues to be President of with
Corporate Finance of Washington, Inc. DOB: 12/08/32. Address: 3005 Franklin Road
North, Arlington, Virginia 22201. 
      
     JOHN G. GUFFEY, JR., Trustee.  Mr. Guffey is chairman of the Calvert Social
Investment  Foundation,  organizing  director of the  Community  Capital Bank in
Brooklyn,  New York,  and a financial  consultant to various  organizations.  In
addition,  he is a Director  of the  Community  Bankers  Mutual  Fund of Denver,
Colorado,  and the Treasurer  and Director of Silby,  Guffey,  and Co.,  Inc., a
venture  capital  firm.  Mr. Guffey is a  trustee/director  of each of the other
investment  companies in the Calvert Group of Funds,  except for Acacia  Capital
Corporation and Calvert New World Fund. DOB:  05/15/48.  Address:  7205 Pomander
Lane, Chevy Chase, Maryland 20815. 
        
     M.  CHARITO  KRUVANT,   Trustee.  Ms.  Kruvant  is  President  of  Creative
Associates  International,  Inc.,  a firm that  specializes  in human  resources
development,  information  management,  public  affairs and  private  enterprise
development.  DOB: 12/08/45.  Address: 5301 Wisconsin Avenue, N.W.,  Washington,
D.C. 20015. 
        
     ARTHUR J. PUGH,  Trustee.  Mr. Pugh serves as a Director of Acacia  Federal
Savings Bank. DOB: 09/24/37.  Address: 4823 Prestwick Drive,  Fairfax,  Virginia
22030. 
         
     1 DAVID R.  ROCHAT,  Senior  Vice  President  and  Trustee.  Mr.  Rochat is
Executive Vice President of Calvert Asset Management Company, Inc., Director and
Secretary of Grady, Berwald and Co., Inc., and Director and President of Chelsea
Securities, Inc. DOB: 10/07/37. Address: Box 93, Chelsea, Vermont 05038. 
        
     1 D. WAYNE SILBY, Esq., Trustee. Mr. Silby is a trustee/director of each of
the  investment  companies  in the  Calvert  Group of Funds,  except  for Acacia
Capital  Corporation  and  Calvert  New World  Fund.  Mr.  Silby is an  officer,
director  and  shareholder  of Silby,  Guffey & Company,  Inc.,  which serves as
general partner of Calvert Social Venture Partners  ("CSVP").  CSVP is a venture
capital firm investing in socially  responsible  small  companies.  He is also a
Director of Acacia Mutual Life Insurance Company.  DOB: 07/20/48.  Address: 1715
18th Street, N.W., Washington, D.C. 20009. 
        
        
     RENO J.  MARTINI,  Senior Vice  President.  Mr.  Martini is a director  and
Senior Vice  President of Calvert  Group,  Ltd.,  and Senior Vice  President and
Chief Investment Officer of Calvert Asset Management  Company,  Inc. Mr. Martini
is also a director  and  President  of  Calvert-Sloan  Advisers,  L.L.C.,  and a
director and officer of Calvert New World Fund. DOB: 1/13/50. 
         
     RONALD M.  WOLFSHEIMER,  CPA,  Treasurer.  Mr.  Wolfsheimer  is Senior Vice
President and  Controller of Calvert  Group,  Ltd. and its  subsidiaries  and an
officer of each of the other investment companies in the Calvert Group of Funds.
Mr.  Wolfsheimer  is Vice  President  and Treasurer of  Calvert-Sloan  Advisers,
L.L.C., and a director of Calvert Distributors, Inc. DOB: 07/24/47.
       
     WILLIAM M.  TARTIKOFF,  Esq., Vice President and Assistant  Secretary.  Mr.
Tartikoff is an officer of each of the investment companies in the Calvert Group
of Funds,  and is Senior  Vice  President,  Secretary,  and  General  Counsel of
Calvert Group,  Ltd., and each of its  subsidiaries.  Mr. Tartikoff is also Vice
President and Secretary of Calvert-Sloan Advisers, L.L.C., a director of Calvert
Distributors, Inc., and is an officer of Acacia National Life Insurance Company.
DOB: 08/12/47. 
        
     EVELYNE S. STEWARD,  Vice  President.  Ms. Steward is a director and Senior
Vice President of Calvert Group, Ltd., and a director of Calvert-Sloan Advisers,
L.L.C.  She is the sister of Philip J. Schewetti,  the portfolio  manager of the
CSIF Equity Portfolio. DOB: 11/14/52. 
        
     DANIEL K. HAYES,  Vice  President.  Mr. Hayes is Vice  President of Calvert
Asset  Management  Company,  Inc.,  and is an  officer  of  each  of  the  other
investment companies in the Calvert Group of Funds, except for Calvert New World
Fund, Inc. DOB: 09/09/50.

         
     SUSAN WALKER BENDER,  Esq.,  Assistant  Secretary.  Ms. Bender is Associate
General  Counsel  of  Calvert  Group,  Ltd.  and  an  officer  of  each  of  its
subsidiaries and Calvert-Sloan  Advisers,  L.L.C. She is also an officer of each
of the other investment  companies in the Calvert Group of Funds. DOB: 01/29/59.

         
     KATHERINE  STONER,  Esq.,  Assistant  Secretary.  Ms.  Stoner is  Associate
General Counsel of Calvert Group and an officer of each of its  subsidiaries and
Calvert-Sloan  Advisers,  L.L.C.  She is also an  officer  of each of the  other
investment companies in the Calvert Group of Funds. DOB: 10/21/56.
     
     LISA  CROSSLEY,  Esq.,  Assistant  Secretary and  Compliance  Officer.  Ms.
Crossley is Associate General Counsel of Calvert Group and an officer of each of
its subsidiaries and  Calvert-Sloan  Advisers,  L.L.C. She is also an officer of
each of the other  investment  companies  in the  Calvert  Group of Funds.  DOB:
12/31/61. 
         
     IVY WAFFORD DUKE, Esq.,  Assistant  Secretary Ms. Duke is Assistant Counsel
of Calvert Group and an officer of each of its  subsidiaries  and  Calvert-Sloan
Advisers.  L.L.C.  She is  also an  officer  of  each  of the  other  investment
companies in the Calvert Group of Funds. DOB: 09/07/68. 

     1  Directors  deemed  to be  "interested  persons"  of the Fund  under  the
Investment  Company Act of 1940, by virtue of their  affiliation with the Fund's
Advisor.


       
     Each of the above  directors  and officers is a trustee or officer of other
investment  companies  in the  Calvert  Group of  Funds  except  Calvert  Social
Investment  Fund,  and Calvert  World Values Fund,  Inc.,  of which only Messrs.
Baird,  Guffey,  and  Silby are among  the  trustees/directors;  Acacia  Capital
Corporation,  of which  only  Messrs.  Blatz,  Diehl,  and Pugh  are  among  the
directors,  and Calvert New World Fund,  Inc.,  of which only Messr.  Martini is
among the  directors.  The address of directors and officers,  unless  otherwise
noted, is 4550 Montgomery Avenue, Suite 1000N, Bethesda, Maryland 20814.
       
     The Audit Committee of the Board of Directors is composed of Messrs. Baird,
Blatz,  Feldman,  Guffey and Pugh. The Board's  Investment  Policy  Committee is
composed of Messrs. Borts, Diehl, Gavian, Rochat, and Silby. 
     Directors  and  officers of the Fund as a group own less than 1% of Calvert
National Municipal Intermediate Fund's outstanding shares.
        
     During fiscal 1996,  directors of the Fund not  affiliated  with the Fund's
Advisor were paid $4,579.  Directors of the Fund not affiliated with the Advisor
currently  receive an annual fee of $20,500 for service as a member of the Board
of Trustees/Directors of the Calvert Group of Funds plus a fee of $750 to $1,500
for each Board and Committee meeting attended; such fees are allocated among the
Funds on the basis of their net assets.
      
     Directors of the Series not affiliated  with the Series'  Advisor may elect
to defer  receipt of all or a  percentage  of their fees and invest  them in any
fund  in  the  Calvert  of  Funds   through  the   Directors/Trustees   Deferred
Compensation  Plan (shown as "Pension or Retirement  Benefits Accrued as part of
Fund Expenses," below). Deferral of the fees is designed to maintain the parties
in the same  position  as if the fees were paid on a current  basis.  Management
believes this will have a negligible  effect on the Fund's assets,  liabilities,
net  assets,  and net  income  per  share,  and  will  ensure  that  there is no
duplication of advisory fees.

                              Director Compensation Table
<TABLE>
<CAPTION>
<S>                      <C>                <C>              <C>


Fiscal Year 1996         Aggregate          Pension or            Total
(unaudited numbers)      Compensation       Retirement         Compensation from
Name of Director         from Registrant    Benefits         Registrant and Fund
                         for service as     Accrued as part      Complex paid to
                         Director           of Registrant         Directors<F3>
                                            Expenses <F2>

Richard L. Baird, Jr.    $1898              $0                    $34,925
Frank H. Blatz, Jr.      $1935              $1935                 $37,875
Frederick T. Borts       $1793              $0                    $32,675
Charles E. Diehl         $1807              $1807                 $35,475
Douglas E. Feldman       $1873              $0                    $34,175
Peter W. Gavian          $1872              $560                  $34,175
M. Charito Kruvant       $905               $0                    $24,313
John G. Guffey, Jr.      $1816              $0                    $49,433
Arthur J. Pugh           $2011              $0                    $36,736
D. Wayne Silby           $1710              $0                    $56,398 

<FN>
<F2> Messrs. Blatz, Diehl, and Gavian have chosen to defer a portion of
their compensation. As of December 31, 1996, total deferred compensation,
including dividends and capital appreciation, was $428,689.46, $428,442.42, and
$96,332.93, for each named director, respectively.
<F3> As of December 31, 1996, the Fund Complex consists of nine (9)
registered investment companies.
</FN>
</TABLE>

                               INVESTMENT ADVISOR

     The Fund's Investment  Advisor is Calvert Asset Management  Company,  Inc.,
4550 Montgomery Avenue, Suite 1000N,  Bethesda,  Maryland 20814, a subsidiary of
Calvert  Group,  Ltd.,  which is a subsidiary  of Acacia  Mutual Life  Insurance
Company of Washington, D.C. ("Acacia Mutual").
     The  Advisory  Contract  between  the Fund and the  Advisor  will remain in
effect  indefinitely,  provided continuance is approved at least annually by the
vote of the holders of a majority of the  outstanding  shares of the Fund, or by
the directors of the Fund;  and further  provided that such  continuance is also
approved annually by the vote of a majority of the directors of the Fund who are
not  parties to the  Contract or  interested  persons of such  parties,  cast in
person at a meeting  called  for the  purpose  of voting on such  approval.  The
Contract  may be  terminated  without  penalty by either party on 60 days' prior
written notice; it automatically terminates in the event of its assignment.
     Under the Contract,  the Advisor manages the investment and reinvestment of
the Fund's  assets,  subject to the direction and control of the Fund's Board of
Directors.  For its services, the Advisor receives an annual fee of 0.60% of the
first $500 million of the Series'  average  daily net assets,  0.50% of the next
$500 million of such assets, and 0.40% of all assets over $1 billion.

     The advisory fee is payable monthly.  The Advisor reserves the right (i) to
waive  all  or a part  of its  fee  and  (ii)  to  compensate,  at its  expense,
broker-dealers  in  consideration  of  their   promotional  and   administrative
services.  The Advisor may recapture in later years, to the extent  permitted by
law,  fees  it  waived  or  deferred  and  expenses  it  paid  in  prior  years.
Specifically,  the Advisor may  recapture  fees waived or deferred  and expenses
reimbursed for the prior two-year period,  but in no event may it recapture fees
or expenses for any period later than the two-year  period  ending  December 31,
1996.  Recapture  is  permitted  only to the  extent  it does not  result in the
Series's  aggregate  expenses  exceeding an annual expense limit of 2.00% of its
average  daily net assets.  The  advisory fee incurred in any given year will be
paid in full before any  recapture  fees are paid for a prior  year.  Recaptured
fees  will  apply to the most  recent  suspension/reimbursement  period.  During
fiscal year 1994,  the Advisor  waived  advisory fees of $139,628 and reimbursed
the Series  $20,701 for other  expenses.  During fiscal year 1995, the Fund paid
advisory fees of $270,912.  During fiscal year 1996, the Fund paid advisory fees
of $275,574. 
     The Advisor provides the Fund with investment advice and research, pays the
salaries and fees of all directors  and  executive  officers of the Fund who are
principals of the Advisor,  and pays certain Fund  advertising  and  promotional
expenses.  The Fund  pays  all  other  administrative  and  operating  expenses,
including:  custodial  fees;  shareholder  servicing,  dividend  disbursing  and
transfer agency fees;  administrative service fees; federal and state securities
registration fees; insurance premiums;  trade association dues; interest,  taxes
and other business fees;  legal and audit fees;  and brokerage  commissions  and
other costs associated with the purchase and sale of portfolio securities.
     The Advisor has agreed to reimburse  National  Municipal  for all expenses,
excluding brokerage,  taxes, interest,  and extraordinary items exceeding,  on a
pro rata basis,  the most restrictive  expense  limitation in those states which
the Series' shares are qualified for sale (currently,  2.5% of the Series' first
$30  million of average  net  assets,  decreasing  to 1.5% for assets  over $100
million).

                             ADMINISTRATIVE SERVICES

       
     Calvert  Administrative  Services  Company,  a  wholly-owned  subsidiary of
Calvert  Group,  Ltd.,  has  been  retained  by  the  Fund  to  provide  certain
administrative  services  necessary to the conduct of the Series' affairs.  Such
services  include  the  preparation  of  corporate  and  regulatory  reports and
filings,  portfolio  accounting,  and the daily  determination of net investment
income and net asset value per share. Calvert Administrative Services Company is
entitled to receive an annual fee of 0.10% of the Series' average net assets for
providing such services. For the 1992 fiscal period, CASC waived its entire fee.
The fees paid by the Series to Calvert Administrative Services Company, Inc. for
fiscal  years  1994,  1995,  and  1996  were  $45,876,   $45,152,  and  $45,929,
respectively. 

                             METHOD OF DISTRIBUTION

        
     The Series has entered into an agreement  with Calvert  Distributors,  Inc.
("CDI"),  whereby CDI, acting as principal  underwriter for the Series,  makes a
continuous  offering of the Series'  securities on a "best efforts" basis. Prior
to April 1, 1995, the principal  underwriter was Calvert Securities  Corporation
("CSC").  Under  the terms of the  agreement,  CDI  bears  all its  expenses  of
providing  services  pursuant  to  the  agreement,   including  payment  of  any
commissions  and service  fees.  CDI receives all sales  charges  imposed on the
Series' shares and compensates broker-dealer firms for sales of such shares (see
"Alternative  Sales  Options"  in the  Prospectus).  CDI is  entitled to receive
reimbursement of distribution  expenses pursuant to the Distribution  Plans (see
below).  For the fiscal  periods  ending  December 31, 1994,  CSC received sales
charges in excess of the dealer  reallowance  of $37,135,  respectively.  During
fiscal  1995 and 1996,  CDI  received  sales  charges  in  excess of the  dealer
reallowance of $5,917 and $13,952. 
         
     Pursuant  to Rule 12b-1  under the  Investment  Company  Act of 1940 ("1940
Act"),  the Series has adopted a Distribution  Plan (the "Plan") which permit it
to pay certain  expenses  associated with the  distribution of its shares.  Such
expenses may not exceed,  on an annual basis,  0.15% of the Series average daily
net assets. As of October 1, 1997,  expenses may not exceed, on an annual basis,
0.25% of the Series  average daily net assets.  No,  Distribution  Plan expenses
were paid in fiscal 1994, 1995, and 1996. 
       
     The Plan was  approved by the Board of  Directors/Trustees,  including  the
Directors/Trustees  who are not "interested  persons" of the Funds (as that term
is  defined  in the 1940  Act)  and who have no  direct  or  indirect  financial
interest in the operation of the Plan or in any agreements  related to the Plan.
The selection and  nomination of the  Directors/Trustees  who are not interested
persons  of the  Fund is  committed  to the  discretion  of  such  disinterested
Directors/Trustees.  In establishing the Plan, the Directors/Trustees considered
various   factors   including   the  amount  of  the   distribution   fee.   The
Directors/Trustees  determined  that there is a reasonable  likelihood  that the
Plan will benefit the Funds and their shareholders. 
       
     The Plan may be  terminated  by vote of a  majority  of the  non-interested
Directors/Trustees  who have no direct or  indirect  financial  interest  in the
Plan,  or by vote of a majority of the  outstanding  shares of the  Series.  Any
change in the Plan that would materially  increase the distribution  cost to the
Series requires approval of the shareholders; otherwise, the Plan may be amended
by  the   Directors/Trustees,   including  a  majority  of  the   non-interested
Directors/Trustees as described above. 
         
     The Plan will continue in effect successive  one-year terms,  provided that
such  continuance is specifically  approved by (i) the vote of a majority of the
Directors/Trustees  who are not parties to the Plan or interested persons of any
such party and who have no direct or  indirect  financial  interest in the Plan,
and (ii) the vote of a majority of the entire Board of Directors/Trustees. 
        
     Apart from the Plan, the Advisor,  at its expense,  may incur costs and pay
expenses associated with the distribution of shares of the Fund. 

                    TRANSFER AND SHAREHOLDER SERVICING AGENT

        
     Calvert  Shareholder  Services,  Inc., a subsidiary of Calvert Group, Ltd.,
and Acacia  Mutual,  has been  retained  by the Fund to act as  transfer  agent,
dividend    disbursing   agent   and   shareholder    servicing   agent.   These
responsibilities  include:  responding to shareholder inquiries and instructions
concerning  their  accounts;  crediting  and debiting  shareholder  accounts for
purchases and redemptions of Fund shares and confirming such transactions; daily
updating  of  shareholder   accounts  to  reflect  declaration  and  payment  of
dividends; and preparing and distributing semi-annual statements to shareholders
regarding their accounts. For such services, Calvert Shareholder Services, Inc.,
receives compensation based on the number of shareholder accounts and the number
of transactions.  The fees paid by the Series to Calvert  Shareholder  Services,
Inc. for the fiscal periods 1994,  1995, and 1996, were $25,149,  $ 30,243,  and
$32,227, respectively. 

                     INDEPENDENT ACCOUNTANTS AND CUSTODIANS

        
     Coopers and Lybrand  L.L.P.  has been selected by the Board of Directors to
serve as independent  accountants of the Fund for fiscal year 1997. State Street
Bank & Trust Company,  N.A., 225 Franklin Street,  Boston,  MA 02110,  serves as
custodian of the Series's investments. First National Bank of Maryland, 25 South
Charles  Street,  Baltimore,  Maryland 21203 acts as custodian of certain of the
Series's  cash  assets.  Neither  custodian  has any part in deciding the Fund's
investment policies or the choice of securities that are to be purchased or sold
by the Series. 

                             PORTFOLIO TRANSACTIONS

     Portfolio  transactions  are undertaken on the basis of their  desirability
from an investment  standpoint.  Investment  decisions and the choice of brokers
and dealers are made by the Advisor under the direction and  supervision  of the
Board of Directors.
        
     Broker-dealers who execute portfolio transactions on behalf of the Fund are
selected on the basis of their professional capability and the value and quality
of their  services.  The  Advisor  reserves  the right to place  orders  for the
purchase  or sale of  portfolio  securities  with  broker-dealers  who have sold
shares of National  Municipal or who provide it with statistical,  research,  or
other  information  and  services.  Although any  statistical  research or other
information  and  services  provided  by  broker-dealers  may be  useful  to the
Advisor,  the  dollar  value  of such  information  and  services  is  generally
indeterminable,  and its  availability  or receipt does not serve to  materially
reduce the  Advisor's  normal  research  activities  or  expenses.  No brokerage
commissions  have been paid to any  officer  or  director  of the Fund or any of
their  affiliates,  or  broker-dealers  for the period ended  December 31, 1994,
1995, or 1996.
     The  Advisor  may  also  execute  portfolio  transactions  with or  through
broker-dealers who have sold shares of National Municipal.  However,  such sales
will not be a qualifying or disqualifying factor in a broker-dealer's  selection
nor will the  selection  of any  broker-dealer  be based on the volume of shares
sold.   The  Advisor  or  its   affiliate  may   compensate,   at  its  expense,
broker-dealers  in  consideration  of  their   promotional  and   administrative
services.
         
     The portfolio turnover was 122%, 57%, and 23% for the 1994, 1995, and 1996,
fiscal years, respectively. 

                               GENERAL INFORMATION

     The Fund was organized as a corporation  under the General  Corporation Law
of the State of  Maryland  on February  4, 1992.  The Fund's  other  series are:
Calvert  California  Municipal  Intermediate  Fund,  Calvert  Arizona  Municipal
Intermediate  Fund,  Calvert  Maryland  Municipal   Intermediate  Fund,  Calvert
Michigan Municipal  Intermediate  Fund, Calvert New York Municipal  Intermediate
Fund,  Calvert  Pennsylvania  Municipal  Intermediate Fund, and Calvert Virginia
Municipal  Intermediate Fund. Prior to March 1, 1994, Calvert National Municipal
Intermediate Fund was known as Calvert Intermediate Municipal Fund.
     National  Municipal will send its  shareholders  unaudited  semi-annual and
audited  annual reports that will include the Series' net asset value per share,
portfolio securities, income and expenses, and other financial information.
        
     Each share of the Series represents an equal proportionate interest in that
Series with each other share and is entitled to such dividends and distributions
out of the income  belonging  to the Series as declared  by the Board.  Upon any
liquidation  of the Series,  shareholders  are entitled to share pro rata in the
net assets available for distribution. 
     This  Statement  of  Additional   Information  does  not  contain  all  the
information in the Fund's registration statement.  The registration statement is
on file with the  Securities  and  Exchange  Commission  and is available to the
public.

                              FINANCIAL STATEMENTS

         
     The  audited   financial   statements  in  the  Series'  Annual  Report  to
Shareholders,  dated December 31, 1996, are expressly  incorporated by reference
and  made a part of this  Statement  of  Additional  Information.  A copy of the
Annual  Report may be obtained  free of charge by writing or calling the Series.


                                    APPENDIX

Municipal Obligations
     Municipal  obligations  are debt  obligations  issued  by  states,  cities,
municipalities,  and their agencies to obtain funds for various public purposes.
Such purposes include the construction of a wide range of public facilities, the
refunding  of  outstanding  obligations,  the  obtaining  of funds  for  general
operating  expenses,  and the lending of funds to other public  institutions and
facilities.  In addition,  certain  types of  industrial  development  bonds are
issued by or on behalf of public  authorities  to obtain funds for many types of
local,  privately  operated  facilities.  Such debt  instruments  are considered
municipal obligations if the interest paid on them is exempt from federal income
tax in the opinion of bond counsel to the issuer.  Although the interest paid on
the proceeds from private activity bonds used for the  construction,  equipment,
repair or improvement of privately operated industrial or commercial  facilities
may  be  exempt  from  federal  income  tax,  current  federal  tax  law  places
substantial limitations on the size of such issues.
     Municipal   obligations   are  generally   classified  as  either  "general
obligation"  or "revenue"  bonds.  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 are payable 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,  but not from
the general taxing power.  Tax-exempt  industrial  development bonds are in most
cases revenue  bonds and do not generally  carry the pledge of the credit of the
issuing  municipality.  There are,  of course,  variations  in the  security  of
municipal  obligations,  both  within  a  particular  classification  and  among
classifications.
     Municipal  obligations are generally  traded on the basis of a quoted yield
to maturity,  and the price of the security is adjusted so that  relative to the
stated rate of interest it will return the quoted rate to the purchaser.
     Short-term and limited-term  municipal obligations include Tax Anticipation
Notes,  Revenue  Anticipation Notes, Bond Anticipation Notes,  Construction Loan
Notes,  and Discount Notes.  The maturities of these  instruments at the time of
issue generally will range between three months and one year. Pre-Refunded Bonds
with longer nominal  maturities  that are due to be retired with the proceeds of
an  escrowed  subsequent  issue at a date within one year and three years of the
time of acquisition are also considered  short-term and  limited-term  municipal
obligations.

Municipal Bond and Note Ratings
     Description  of  Moody's  Investors  Service,  Inc.'s  ratings of state and
municipal notes:
     Moody's  ratings  for  state  and  municipal  notes  and  other  short-term
obligations are designated Moody's Investment Grade ("MIG"). This distinction is
in recognition of the differences  between  short-term credit risk and long-term
risk.
     MIG 1: Notes bearing this  designation  are of the best  quality,  enjoying
strong  protection from  established  cash flows of funds for their servicing or
from established and broad-based access to the market for refinancing, or both.
     MIG2: Notes bearing this  designation are of high quality,  with margins of
protection ample although not so large as in the preceding group.
     MIG3:  Notes bearing this  designation are of favorable  quality,  with all
security  elements  accounted  for but  lacking the  undeniable  strength of the
preceding grades. Market access for refinancing,  in particular, is likely to be
less well established.
     MIG4:  Notes bearing this  designation  are of adequate  quality,  carrying
specific  risk  but  having  protection  commonly  regarded  as  required  of an
investment security and not distinctly or predominantly speculative.

     Description of Moody's Investors Service Inc.'s/Standard & Poor's municipal
bond
ratings:
     Aaa/AAA: Best quality.  These bonds 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.  This rating indicates an extremely strong capacity to pay principal and
interest.
     Aa/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. They are rated lower
than the best bonds because  margins of protection may not be as large as in Aaa
securities,  fluctuation of protective elements may be of greater amplitude,  or
there may be other elements  present which make long-term  risks appear somewhat
larger than in Aaa securities.
     A/A:  Upper-medium grade obligations.  Factors giving security to principal
and interest are considered adequate, but elements may be present which make the
bond somewhat  more  susceptible  to the adverse  effects of  circumstances  and
economic conditions.
     Baa/BBB:  Medium grade obligations;  adequate capacity to pay principal and
interest. Whereas they normally exhibit adequate protection parameters,  adverse
economic  conditions  or  changing  circumstances  are more  likely to lead to a
weakened  capacity to pay principal and interest for bonds in this category than
for bonds in the A category.
     Ba/BB, B/B,  Caa/CCC,  Ca/CC: Debt rated in these categories is regarded as
predominantly  speculative  with  respect to capacity to pay  interest and repay
principal.  There may be some large  uncertainties  and major risk  exposure  to
adverse conditions. The higher the degree of speculation, the lower the rating.
         C/C: This rating is only for no-interest income bonds.
         D: Debt in default; payment of interest and/or principal is in arrears.

                                LETTER OF INTENT

Date                       

Calvert Distributors, Inc.
4550 Montgomery Avenue
Bethesda, MD 20814

Ladies and Gentlemen:

     By signing this Letter of Intent,  or  affirmatively  marking the Letter of
Intent  option on my Fund Account  Application  Form, I agree to be bound by the
terms and conditions applicable to Letters of Intent appearing in the Prospectus
and the  Statement of  Additional  Information  for the Fund and the  provisions
described  below as they may be  amended  from  time to time by the  Fund.  Such
amendments will apply automatically to existing Letters of Intent.

     I intend to invest in the shares of:  (Fund or Portfolio  name*)during  the
thirteen (13) month period from the date of my first  purchase  pursuant to this
Letter  (which  cannot be more than  ninety  (90) days prior to the date of this
Letter  or my Fund  Account  Application  Form,  whichever  is  applicable),  an
aggregate  amount  (excluding any  reinvestments of  distributions)  of at least
fifty thousand dollars ($50,000) which, together with my current holdings of the
Fund  (at  public  offering  price  on date of this  Letter  or my Fund  Account
Application  Form,  whichever  is  applicable),  will equal or exceed the amount
checked below:

         __ $50,000 __ $100,000 __ $250,000 __ $500,000 __ $1,000,000

     Subject to the conditions  specified below,  including the terms of escrow,
to which I hereby agree,  each purchase  occurring after the date of this Letter
will be made at the public offering price applicable to a single  transaction of
the dollar amount  specified  above, as described in the Fund's  prospectus.  No
portion of the sales charge  imposed on purchases made prior to the date of this
Letter will be refunded.

     I am making no commitment to purchase  shares,  but if my purchases  within
thirteen  months from the date of my first purchase do not aggregate the minimum
amount  specified  above,  I will pay the  increased  amount  of  sales  charges
prescribed in the terms of escrow  described  below. I understand  that 4.75% of
the minimum dollar amount  specified above will be held in escrow in the form of
shares  (computed to the nearest full share).  These shares will be held subject
to the terms of escrow described below.

     From the initial purchase (or subsequent purchases if necessary),  4.75% of
the dollar amount  specified in this Letter shall be held in escrow in shares of
the Fund by the Fund's  transfer  agent.  For  example,  if the  minimum  amount
specified under the Letter is $50,000,  the escrow shall be shares valued in the
amount of $2,375  (computed at the public  offering price adjusted for a $50,000
purchase).  All  dividends and any capital  gains  distribution  on the escrowed
shares will be credited to my account.

     If the total  minimum  investment  specified  under the Letter is completed
within a thirteen month period, escrowed shares will be promptly released to me.
However,  shares  disposed of prior to  completion  of the purchase  requirement
under the Letter will be  deducted  from the amount  required  to  complete  the
investment commitment.

     Upon expiration of this Letter,  the total purchases pursuant to the Letter
are less than the  amount  specified  in the  Letter as the  intended  aggregate
purchases,  Calvert Distributors,  Inc. ("CDI") will bill me for an amount equal
to the  difference  between the lower load I paid and the dollar amount of sales
charges which I would have paid if the total amount purchased had been made at a
single  time.  If not paid by the  investor  within 20 days,  CDI will debit the
difference from my account.  Full shares, if any,  remaining in escrow after the
aforementioned adjustment will be released and, upon request, remitted to me.

     I irrevocably constitute and appoint CDI as my attorney-in-fact,  with full
power of substitution, to surrender for redemption any or all escrowed shares on
the books of the Fund. This power of attorney is coupled with an interest.

     The commission allowed by Calvert  Distributors,  Inc. to the broker-dealer
named  herein  shall be at the  rate  applicable  to the  minimum  amount  of my
specified intended purchases.

     The  Letter  may  be  revised   upward  by  me  at  any  time   during  the
thirteen-month  period,  and such a revision  will be  treated as a new  Letter,
except that the  thirteen-month  period  during which the purchase  must be made
will remain  unchanged and there will be no  retroactive  reduction of the sales
charges paid on prior purchases.

     In  determining  the  total  amount of  purchases  made  hereunder,  shares
disposed  of  prior  to  termination  of  this  Letter  will  be  deducted.   My
broker-dealer  shall  refer to this  Letter  of  Intent in  placing  any  future
purchase orders for me while this Letter is in effect.


                                                     
Dealer

                                                     
Name of Investor(s)


By                                                   
Authorized Signer

                                                     
Address


                                                     
Date


                                                     
Signature of Investor(s)


                                                     
Signature of Investor(s)


     *"Fund" in this Letter of Intent shall refer to the Fund or  Portfolio,  as
the case may be, here indicated.



                          Calvert Municipal Fund, Inc.
                           CALVERT NATIONAL MUNICIPAL
                                INTERMEDIATE FUND

                       Statement of Additional Information
                                      
                               April 30, 1997 


INVESTMENT ADVISOR
Calvert Asset Management Company, Inc.
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814

INDEPENDENT ACCOUNTANTS
Coopers & Lybrand L.L.P.
217 E. Redwood Street
Baltimore, Maryland 21202-3316

TRANSFER AGENT
Calvert Shareholder Services, Inc.
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814

PRINCIPAL UNDERWRITER
Calvert Distributors, Inc.
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814


              TABLE OF CONTENTS

              Investment Objective                                    1
              Investment Policies                                     1
              Investment Restrictions                                 3
              Purchases and Redemptions of Shares                     4
              Dividends and Distributions                             5
              Tax Matters                                             5
              Valuation of Shares                                     6
              Calculation of Yield and Total Return                   7
              Advertising                                             8
              Directors and Officers                                  8
              Investment Advisor                                     11
              Administrative Services                                12
              Method of Distribution                                 12
              Transfer and Shareholder Servicing Agent               13
              Independent Accountants and Custodians                 13
              Portfolio Transactions                                 13
              General Information                                    14
              Financial Statements                                   14
              Appendix                                               14



<PAGE>

PART C. OTHER INFORMATION


Item 15.          Indemnification

Registrant's Bylaws, Exhibit 2 to this Registration Statement, provide that
officers and directors will be indemnified by the Fund against liabilities and
expenses incurred by such persons in connection with actions, suits, or
proceedings arising out of their offices or duties of employment, except that
no indemnification can be made to a person who has been adjudged liable of
willful misfeasance, bad faith, gross negligence, or reckless disregard of
duties.  In the absence of such an adjudication, the determination of
eligibility for indemnification shall be made by independent counsel in a
written opinion or by the vote of a majority of a quorum of directors who are
neither "interested persons" of Registrant, as that term is defined in Section
2(a)(19) of the Investment Company Act of 1940, nor parties to the proceeding.

Registrant's Articles of Incorporation also provide that Registrant may
purchase and maintain liability insurance on behalf of any officer, trustee,
employee or agent against any liabilities arising from such status.  In this
regard, Registrant maintains a Directors & Officers (Partners) Liability
Insurance Policy with Chubb Group of Insurance Companies, 15 Mountain View
Road, Warren, New Jersey 07061, providing Registrant with $5 million in
directors and officers liability coverage, plus $3 million in excess directors
and officers liability coverage for the independent trustees/directors only.
Registrant also maintains a $8 million Investment Company Blanket Bond issued
by ICI Mutual Insurance Company, P.O. Box 730, Burlington, Vermont, 05402.


Item 16. Exhibits

 1.   Articles of Incorporation, (incorporated by reference to Registrant's
      Pre-Effective Amendment No. 2, April 27, 1992, and as amended,
      incorporated by reference to Registrant's Pre-Effective Amendment No. 3,
      May 21, 1992).

 2.   By-Laws (incorporated by reference to Registrant's Pre-Effective
      Amendment No. 2, April 27, 1992).

 3.   Inapplicable.

 4.   Agreement and Plan of Reorganization filed herewith -- Exhibit A to  
      the Form N-14.

 5.   Specimen Stock Certificate for Calvert California Municipal Intermediate
      Fund, (incorporated by reference to Registrant's Post-Effective Amendment
      No. 1, July 27, 1992).

 6.   Investment Advisory Contract (incorporated by reference to Registrant's
      Pre-Effective Amendment No. 2, April 27, 1992).

 7.   Underwriting Agreement, (incorporated by reference to Registrant's
      Post-Effective Amendment No.__).

 8.   Directors' Deferred Compensation Agreement (incorporated by reference to
      Registrant's Pre-Effective Amendment No. 2, April 27, 1992).

 9.   Custodial Contract (incorporated by reference to Registrant's
      Pre-Effective Amendment No. 2, April 27, 1992).

 10.  Plan of Distribution (incorporated by reference to Registrant's
      Post-Effective Amendment No. 13, January 25, 1996).

 11.  Inapplicable.

 12.  Opinion and Consent of Counsel on Tax Matters to be filed by amendment.

 13.  Transfer Agency Contract (incorporated by reference to Registrant's
      Pre-Effective Amendment No. 2, April 27, 1992).

 14.  Consent of Coopers & Lybrand LLP to be filed by amendment.

 15.  Inapplicable.

 16.  Copies of Power of Attorney Forms filed herewith.

 17. (a)   Current Calvert National Municipal Intermediate Fund, Calvert
     Arizona Municipal Intermediate Fund, Calvert Florida Municipal
     Intermediate Fund, Calvert Michigan Municipal Intermediate Fund, Calvert
     New York Municipal Intermediate Fund and Calvert Pennsylvania Municipal
     Intermediate Fund Prospectus filed herewith.

     (b)   The Calvert Arizona Municipal Intermediate Fund, Calvert Florida
     Municipal Intermediate Fund, Calvert Michigan Municipal Intermediate
     Fund, Calvert New York Municipal Intermediate Fund and Calvert
     Pennsylvania Municipal Intermediate Fund Statement of Additional
     Information filed herewith.

Item 17. Undertakings

         (1)   The undersigned registrant agrees that prior to any public
               reoffering of the securities registered through the use of 
               a prospectus which is a part of this registration statement
               by any person or party who is deemed to be an underwriter 
               within the meaning of Rule 145(c) of the Securities Act,
               the reoffering prospectus will contain the information
               called for by the applicable registration form for reofferings
               by persons who may be deemed underwriters, in addition to 
               the information called for by the other items of the applicable
               form.

         (2)   The undersigned registrant agrees that every prospectus that
               is filed under paragraph (1) above will be filed as a part of an 
               amendment to the registration statement and will not be used
               until the amendment is effective, and that, in determining any 
               liability under the 1933 Act, each post-effective amendment 
               shall be deemed to be a new registration statement for the
               securities offered therein, and the offering of the securities
               at that time shall be deemed to be the initial bona fide 
               offering of them.  
               

<PAGE>

                                    SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, this registration
statement has been signed on behalf of the Registrant by the undersigned, 
thereto duly authorized in the City of Bethesda, and the state of Maryland on
the 7th day of January, 1998.

                                    CALVERT MUNICIPAL FUND, INC.

                           By:      _________________________________
                                    Barbara Krumsiek, President
                                    


<PAGE>
 


                                   SIGNATURES


Pursuant to the requirements of the Securities Act of 1933, this Registration
Statement for Calvert Municipal Intermediate Fund, Inc. has been signed below
by the following persons in the capacities indicated on January 7, 1998.

Signature                                   Title


________________________   Trustee and Principal
Barbara Krumsiek.          Executive Officer


________________________   Principal Accounting
Ronald M. Wolfsheimer      Officer


__________**____________   Trustee
Richard L. Baird, Jr.


__________**____________   Trustee
Frank H. Blatz, Jr., Esq.


__________**____________   Trustee
Frederick T. Borts, M.D.


__________**____________   Trustee
Charles E. Diehl


__________**____________   Trustee
Douglas E. Feldman


__________**____________   Trustee
Peter W. Gavian


__________**____________   Trustee
John G. Guffey, Jr.


________________________   Trustee
M. Charito Kruvant


__________**____________   Trustee
Arthur J. Pugh


__________**____________   Trustee
David R. Rochat


__________**____________   Trustee
D. Wayne Silby


 
  
                                    **By:____________________________
                                    Name:   Ivy Wafford Duke
                                            as Attorney-in-fact

                                     **By:____________________________
                                    Name:   Susan Walker Bender
                                            as Attorney-in-fact


         
                                        Executed by Ivy Wafford Duke and
                                        Susan Walker on behalf of those 
                                        indicated pursuant to a Power of 
                                        Attorney dated May 8, 1997, or earlier
                                        filed herewith.




<PAGE>

EXHIBIT INDEX

Form N-14 
Item No.

Ex-23
16 (11)                  Form of Opinion and Consent of Counsel

Ex-99                    
16 (16)                  Copies of Power of Attorney Forms

Ex-99(a)
16 (17)(a)               Current Calvert National Municipal Intermediate Fund, 
                         Calvert Arizona Municipal Intermediate Fund, Calvert 
                         Florida Municipal Intermediate Fund, Calvert Michigan 
                         Municipal Intermediate Fund, Calvert New York Municipal
                         Intermediate Fund and Calvert Pennsylvania Municipal
                         Intermediate Fund Prospectus

Ex-99(b)
16 (17)(b)               The Calvert Arizona Municipal Intermediate Fund, 
                         Calvert Florida Municipal Intermediate Fund, 
                         Calvert Michigan Municipal Intermediate Fund, Calvert
                         New York Municipal Intermediate Fund and Calvert
                         Pennsylvania Municipal Intermediate Fund Statement 
                         of Additional Information filed herewith.




 
Exhibit 11


                                     January 7, 1998


Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street, N.W.
Washington, D.C.  20549

         Re:      Exhibit 11, Form N-14
                  Calvert Municipal Intermediate Fund, Inc.
                  811-6525 and 33-44968

                  First Variable Rate Fund for Government Income
                  2-56809 and 811-2633


Ladies and Gentlemen:

As counsel to the Calvert Municipal Intermediate Fund, Inc., (the "Fund"), it
is my opinion, based upon an examination of the Funds' Articles of
Incorporation and By-Laws and such other original or photostatic copies of Fund
records, certificates of public officials, documents, papers, statutes, and
authorities as I deemed necessary to form the basis of this opinion, that the
securities being registered by this Registration Statement on Form N-14 will,
when sold, be legally issued, fully paid and non-assessable.

Similarly, as counsel to the First Variable Rate Fund for Government Income
(the "Trust"), it is my opinion, based upon an examination of the Trust's
Declaration of Trust and By-Laws and such other original or photostatic copies
of Trust records, certificates of public officials, documents, papers,
statutes, and authorities as I deemed necessary to form the basis of this
opinion, that the securities being registered by this Registration Statement on
Form N-14 will, when sold, be legally issued, fully paid and non-assessable.

Consent is hereby given to file this opinion of counsel with the Securities and
Exchange Commission as an Exhibit to this Registration Statement.



Sincerely,


/s/ Ivy Wafford Duke
Ivy Wafford Duke
Assistant Counsel




                                                                                

                                                             Exhibit 16

                           POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate
Fund for Government Income, Calvert Tax-Free Reserves, Calvert Cash
Reserves, The Calvert Fund, and Calvert Municipal Fund, Inc.
(collectively, the "Funds"), hereby constitute Ronald M. Wolfsheimer,
William M. Tartikoff, Susan Walker Bender, Katherine Stoner, Lisa
Crossley, and Ivy Wafford Duke my true and lawful attorneys, with
full power to each of them, to sign for me and in my name in the
appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all
such things in my name and behalf necessary for registering and
maintaining registration or exemptions from registration of the Funds
with any government agency in any jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such
things in my name and behalf to comply with the provisions of all
federal, state and foreign laws, regulations, and policy
pronouncements affecting the Funds, including, but not limited to,
the Securities Act of 1933, the Securities Exchange Act of 1934, the
Investment Company Act of 1940, the Investment Advisers Act of 1940,
and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to
any document needed to maintain the lawful operation of the Funds in
connection with any transaction approved by the Board of
Trustee/Directors.

         When any of the above-referenced attorneys signs my name to
any document in connection with maintaining the lawful operation of
the Funds, the signing is automatically ratified and confirmed by me
by virtue of this Power of Attorney.

         WITNESS my hand on the date set forth below.


May 7, 1997                                            Richard L.  Baird, Jr.   
Date                                                   Signature



Arthur J. Pugh             
Witness                                                Richard L.  Baird, Jr.   
                                                       Name of Director
<PAGE>

                           POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate
Fund for Government Income, Calvert Tax-Free Reserves, Calvert Cash
Reserves, The Calvert Fund, and Calvert Municipal Fund, Inc.
(collectively, the "Funds"), hereby constitute Ronald M. Wolfsheimer,
William M. Tartikoff, Susan Walker Bender, Katherine Stoner, Lisa
Crossley, and Ivy Wafford Duke my true and lawful attorneys, with
full power to each of them, to sign for me and in my name in the
appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all
such things in my name and behalf necessary for registering and
maintaining registration or exemptions from registration of the Funds
with any government agency in any jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such
things in my name and behalf to comply with the provisions of all
federal, state and foreign laws, regulations, and policy
pronouncements affecting the Funds, including, but not limited to,
the Securities Act of 1933, the Securities Exchange Act of 1934, the
Investment Company Act of 1940, the Investment Advisers Act of 1940,
and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to
any document needed to maintain the lawful operation of the Funds in
connection with any transaction approved by the Board of
Trustee/Directors.

         When any of the above-referenced attorneys signs my name to
any document in connection with maintaining the lawful operation of
the Funds, the signing is automatically ratified and confirmed by me
by virtue of this Power of Attorney.

         WITNESS my hand on the date set forth below.


May 7, 1997                                               Frank H. Blatz, Jr.   
Date                                                      Signature




Charles E. Diehl                                          Frank H. Blatz, Jr.   
Witness                                                   Name of Director


<PAGE>

                           POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate
Fund for Government Income, Calvert Tax-Free Reserves, Calvert Cash
Reserves, The Calvert Fund, and Calvert Municipal Fund, Inc.
(collectively, the "Funds"), hereby constitute Ronald M. Wolfsheimer,
William M. Tartikoff, Susan Walker Bender, Katherine Stoner, Lisa
Crossley, and Ivy Wafford Duke my true and lawful attorneys, with
full power to each of them, to sign for me and in my name in the
appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all
such things in my name and behalf necessary for registering and
maintaining registration or exemptions from registration of the Funds
with any government agency in any jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such
things in my name and behalf to comply with the provisions of all
federal, state and foreign laws, regulations, and policy
pronouncements affecting the Funds, including, but not limited to,
the Securities Act of 1933, the Securities Exchange Act of 1934, the
Investment Company Act of 1940, the Investment Advisers Act of 1940,
and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to
any document needed to maintain the lawful operation of the Funds in
connection with any transaction approved by the Board of
Trustee/Directors.

         When any of the above-referenced attorneys signs my name to
any document in connection with maintaining the lawful operation of
the Funds, the signing is automatically ratified and confirmed by me
by virtue of this Power of Attorney.

         WITNESS my hand on the date set forth below.


May 7, 1997                                              Charles E. Diehl       
Date                                                     Signature




Frank H. Blatz, Jr.                                      Charles E. Diehl       
Witness                                                  Name of Director


<PAGE>

                           POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate
Fund for Government Income, Calvert Tax-Free Reserves, Calvert Cash
Reserves, The Calvert Fund, and Calvert Municipal Fund, Inc.
(collectively, the "Funds"), hereby constitute Ronald M. Wolfsheimer,
William M. Tartikoff, Susan Walker Bender, Katherine Stoner, Lisa
Crossley, and Ivy Wafford Duke my true and lawful attorneys, with
full power to each of them, to sign for me and in my name in the
appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all
such things in my name and behalf necessary for registering and
maintaining registration or exemptions from registration of the Funds
with any government agency in any jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such
things in my name and behalf to comply with the provisions of all
federal, state and foreign laws, regulations, and policy
pronouncements affecting the Funds, including, but not limited to,
the Securities Act of 1933, the Securities Exchange Act of 1934, the
Investment Company Act of 1940, the Investment Advisers Act of 1940,
and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to
any document needed to maintain the lawful operation of the Funds in
connection with any transaction approved by the Board of
Trustee/Directors.

         When any of the above-referenced attorneys signs my name to
any document in connection with maintaining the lawful operation of
the Funds, the signing is automatically ratified and confirmed by me
by virtue of this Power of Attorney.

         WITNESS my hand on the date set forth below.


May 7, 1997                                     John G. Guffey, Jr.             
Date                                            Signature




M. Charito Kruvant                              John G. Guffey, Jr.             
Witness                                         Name of Director

<PAGE>

                           POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate
Fund for Government Income, Calvert Tax-Free Reserves, Calvert Cash
Reserves, The Calvert Fund, and Calvert Municipal Fund, Inc.
(collectively, the "Funds"), hereby constitute Ronald M. Wolfsheimer,
William M. Tartikoff, Susan Walker Bender, Katherine Stoner, Lisa
Crossley, and Ivy Wafford Duke my true and lawful attorneys, with
full power to each of them, to sign for me and in my name in the
appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all
such things in my name and behalf necessary for registering and
maintaining registration or exemptions from registration of the Funds
with any government agency in any jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such
things in my name and behalf to comply with the provisions of all
federal, state and foreign laws, regulations, and policy
pronouncements affecting the Funds, including, but not limited to,
the Securities Act of 1933, the Securities Exchange Act of 1934, the
Investment Company Act of 1940, the Investment Advisers Act of 1940,
and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to
any document needed to maintain the lawful operation of the Funds in
connection with any transaction approved by the Board of
Trustee/Directors.

         When any of the above-referenced attorneys signs my name to
any document in connection with maintaining the lawful operation of
the Funds, the signing is automatically ratified and confirmed by me
by virtue of this Power of Attorney.

         WITNESS my hand on the date set forth below.


May 7, 1997                                           Barbara Krumsiek          
Date                                                  Signature




Edith Lillie                                          Barbara Krumsiek          
Witness                                               Name of Director


<PAGE>

                           POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate
Fund for Government Income, Calvert Tax-Free Reserves, Calvert Cash
Reserves, The Calvert Fund, and Calvert Municipal Fund, Inc.
(collectively, the "Funds"), hereby constitute Ronald M. Wolfsheimer,
William M. Tartikoff, Susan Walker Bender, Katherine Stoner, Lisa
Crossley, and Ivy Wafford Duke my true and lawful attorneys, with
full power to each of them, to sign for me and in my name in the
appropriate capacities, all registration statements and amendments
filed by the Funds with any federal or state agency, and to do all
such things in my name and behalf necessary for registering and
maintaining registration or exemptions from registration of the Funds
with any government agency in any jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such
things in my name and behalf to comply with the provisions of all
federal, state and foreign laws, regulations, and policy
pronouncements affecting the Funds, including, but not limited to,
the Securities Act of 1933, the Securities Exchange Act of 1934, the
Investment Company Act of 1940, the Investment Advisers Act of 1940,
and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to
any document needed to maintain the lawful operation of the Funds in
connection with any transaction approved by the Board of
Trustee/Directors.

         When any of the above-referenced attorneys signs my name to
any document in connection with maintaining the lawful operation of
the Funds, the signing is automatically ratified and confirmed by me
by virtue of this Power of Attorney.

         WITNESS my hand on the date set forth below.


May 7, 1997                                             Arthur J. Pugh          
Date                                                    Signature




Charles E. Diehl                                        Arthur J. Pugh          
Witness                                                 Name of Director

<PAGE>

                           POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate
Fund for Government Income, Calvert Tax-Free Reserves, Calvert Cash
Reserves (doing business as Money Management Plus), The Calvert Fund,
and Calvert Municipal Fund, Inc. (collectively, the "Funds"), hereby
constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Beth-ann Roth, and Katherine Stoner my true and lawful
attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and
amendments filed by the Funds with any federal or state agency, and
to do all such things in my name and behalf necessary for registering
and maintaining registration or exemptions from registration of the
Funds with any government agency in any jurisdiction, domestic or
foreign.

         The same persons are authorized generally to do all such
things in my name and behalf to comply with the provisions of all
federal, state and foreign laws, regulations, and policy
pronouncements affecting the Funds, including, but not limited to,
the Securities Act of 1933, the Securities Exchange Act of 1934, the
Investment Company Act of 1940, the Investment Advisers Act of 1940,
and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to
any document needed to maintain the lawful operation of the Funds in
connection with any transaction approved by the Board of
Trustee/Directors.

         When any of the above-referenced attorneys signs my name to
any document in connection with maintaining the lawful operation of
the Funds, the signing is automatically ratified and confirmed by me
by virtue of this Power of Attorney.

         WITNESS my hand on the date set forth below.



May 4, 1994                                          Frederick T. Borts         
Date                                                 Signature




John G. Guffey, Jr.                                  Frederick T. Borts         
Witness                                              Name of Trustee/Director




<PAGE>

                           POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate
Fund for Government Income, Calvert Tax-Free Reserves, Calvert Cash
Reserves (doing business as Money Management Plus), The Calvert Fund,
and Calvert Municipal Fund, Inc. (collectively, the "Funds"), hereby
constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Beth-ann Roth, and Katherine Stoner my true and lawful
attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and
amendments filed by the Funds with any federal or state agency, and
to do all such things in my name and behalf necessary for registering
and maintaining registration or exemptions from registration of the
Funds with any government agency in any jurisdiction, domestic or
foreign.

         The same persons are authorized generally to do all such
things in my name and behalf to comply with the provisions of all
federal, state and foreign laws, regulations, and policy
pronouncements affecting the Funds, including, but not limited to,
the Securities Act of 1933, the Securities Exchange Act of 1934, the
Investment Company Act of 1940, the Investment Advisers Act of 1940,
and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to
any document needed to maintain the lawful operation of the Funds in
connection with any transaction approved by the Board of
Trustee/Directors.

         When any of the above-referenced attorneys signs my name to
any document in connection with maintaining the lawful operation of
the Funds, the signing is automatically ratified and confirmed by me
by virtue of this Power of Attorney.

         WITNESS my hand on the date set forth below.



May 4, 1994                                            Douglas E. Feldman       
Date                                                   Signature




Richard L. Baird, Jr.                                  Douglas E. Feldman       
Witness                                                Name of Trustee/Director



<PAGE>

                           POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate
Fund for Government Income, Calvert Tax-Free Reserves, Calvert Cash
Reserves (doing business as Money Management Plus), The Calvert Fund,
and Calvert Municipal Fund, Inc. (collectively, the "Funds"), hereby
constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Beth-ann Roth, and Katherine Stoner my true and lawful
attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and
amendments filed by the Funds with any federal or state agency, and
to do all such things in my name and behalf necessary for registering
and maintaining registration or exemptions from registration of the
Funds with any government agency in any jurisdiction, domestic or
foreign.

         The same persons are authorized generally to do all such
things in my name and behalf to comply with the provisions of all
federal, state and foreign laws, regulations, and policy
pronouncements affecting the Funds, including, but not limited to,
the Securities Act of 1933, the Securities Exchange Act of 1934, the
Investment Company Act of 1940, the Investment Advisers Act of 1940,
and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to
any document needed to maintain the lawful operation of the Funds in
connection with any transaction approved by the Board of
Trustee/Directors.

         When any of the above-referenced attorneys signs my name to
any document in connection with maintaining the lawful operation of
the Funds, the signing is automatically ratified and confirmed by me
by virtue of this Power of Attorney.

         WITNESS my hand on the date set forth below.



May 4, 1994                                         Peter W. Gavian             
Date                                                Signature




Reno Martini                                         Peter W. Gavian            
Witness                                              Name of Trustee/Director



<PAGE>

                           POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate
Fund for Government Income, Calvert Tax-Free Reserves, Calvert Cash
Reserves (doing business as Money Management Plus), The Calvert Fund,
and Calvert Municipal Fund, Inc. (collectively, the "Funds"), hereby
constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Beth-ann Roth, and Katherine Stoner my true and lawful
attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and
amendments filed by the Funds with any federal or state agency, and
to do all such things in my name and behalf necessary for registering
and maintaining registration or exemptions from registration of the
Funds with any government agency in any jurisdiction, domestic or
foreign.

         The same persons are authorized generally to do all such
things in my name and behalf to comply with the provisions of all
federal, state and foreign laws, regulations, and policy
pronouncements affecting the Funds, including, but not limited to,
the Securities Act of 1933, the Securities Exchange Act of 1934, the
Investment Company Act of 1940, the Investment Advisers Act of 1940,
and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to
any document needed to maintain the lawful operation of the Funds in
connection with any transaction approved by the Board of
Trustee/Directors.

         When any of the above-referenced attorneys signs my name to
any document in connection with maintaining the lawful operation of
the Funds, the signing is automatically ratified and confirmed by me
by virtue of this Power of Attorney.

         WITNESS my hand on the date set forth below.



May 4, 1994                                            David R. Rochat          
Date                                                   Signature




                                                       David  R. Rochat         
Witness                                                Name of Trustee/Director



<PAGE>

                           POWER OF ATTORNEY


         I, the undersigned Trustee/Director of First Variable Rate
Fund for Government Income, Calvert Tax-Free Reserves, Calvert Cash
Reserves (doing business as Money Management Plus), The Calvert Fund,
and Calvert Municipal Fund, Inc. (collectively, the "Funds"), hereby
constitute Ronald M. Wolfsheimer, William M. Tartikoff, Susan Walker
Bender, Beth-ann Roth, and Katherine Stoner my true and lawful
attorneys, with full power to each of them, to sign for me and in my
name in the appropriate capacities, all registration statements and
amendments filed by the Funds with any federal or state agency, and
to do all such things in my name and behalf necessary for registering
and maintaining registration or exemptions from registration of the
Funds with any government agency in any jurisdiction, domestic or
foreign.

         The same persons are authorized generally to do all such
things in my name and behalf to comply with the provisions of all
federal, state and foreign laws, regulations, and policy
pronouncements affecting the Funds, including, but not limited to,
the Securities Act of 1933, the Securities Exchange Act of 1934, the
Investment Company Act of 1940, the Investment Advisers Act of 1940,
and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to
any document needed to maintain the lawful operation of the Funds in
connection with any transaction approved by the Board of
Trustee/Directors.

         When any of the above-referenced attorneys signs my name to
any document in connection with maintaining the lawful operation of
the Funds, the signing is automatically ratified and confirmed by me
by virtue of this Power of Attorney.

         WITNESS my hand on the date set forth below.



May 4, 1994                                           D. Wayne Silby            
Date                                                  Signature




Frederick T. Borts                                    D. Wayne Silby            
Witness                                               Name of Trustee/Director


<PAGE>

                           POWER OF ATTORNEY

         I, the undersigned Officer of First Variable Rate Fund for
Government Income, Calvert Tax-Free Reserves, Calvert Cash Reserves
(doing business as Money Management Plus), The Calvert Fund, and
Calvert Municipal Fund, Inc. (collectively, the "Funds"), hereby
constitute William M. Tartikoff, Susan Walker Bender, Beth-ann Roth,
and Katherine Stoner my true and lawful attorneys, with full power to
each of them, to sign for me and in my name in the appropriate
capacities, all registration statements and amendments filed by the
Funds with any federal or state agency, and to do all such things in
my name and behalf necessary for registering and maintaining
registration or exemptions from registration of the Funds with any
government agency in any jurisdiction, domestic or foreign.

         The same persons are authorized generally to do all such
things in my name and behalf to comply with the provisions of all
federal, state and foreign laws, regulations, and policy
pronouncements affecting the Funds, including, but not limited to,
the Securities Act of 1933, the Securities Exchange Act of 1934, the
Investment Company Act of 1940, the Investment Advisers Act of 1940,
and all state laws regulating the securities industry.

         The same persons are further authorized to sign my name to
any document needed to maintain the lawful operation of the Funds in
connection with any transaction approved by the Board of
Trustee/Directors.

         When any of the above-referenced attorneys signs my name to
any document in connection with maintaining the lawful operation of
the Funds, the signing is automatically ratified and confirmed by me
by virtue of this Power of Attorney.

         WITNESS my hand on the date set forth below.



March 1, 1995                                             Ronald  M. Wolfsheimer
Date                                                      Signature




Katherine Stoner                                          Ronald M. Wolfsheimer 
Witness                                                   Name of Officer


PROSPECTUS

 April 30, 1997 
                      CALVERT MUNICIPAL INTERMEDIATE FUNDS:
                  ARIZONA CALIFORNIA FLORIDA MARYLAND MICHIGAN
                         NEW YORK PENNSYLVANIA VIRGINIA
                  CALVERT NATIONAL MUNICIPAL INTERMEDIATE FUND
                4550 Montgomery Avenue, Bethesda, Maryland 20814

INTRODUCTION TO THE FUNDS

     The Calvert National  Municipal  Intermediate  Fund ("National  Municipal")
seeks to earn the highest level of interest  income  exempt from federal  income
taxes as is  consistent  with prudent  investment  management,  preservation  of
capital, and the stated quality and maturity characteristics.

     The  state-specific  Calvert Municipal  Intermediate  Funds ("State Funds")
seek to earn the  highest  level of  interest  income  exempt  from  federal and
specific state income taxes as is consistent with prudent investment management,
preservation of capital, and the stated quality and maturity characteristics.

     The National  Municipal and the State Funds  (collectively,  the "Funds" or
"Municipal  Funds")  each  invest  in  nondiversified  portfolios  of  municipal
obligations,  including  some with  interest  that may be subject to the federal
alternative minimum tax. The average dollar-weighted  maturity of investments is
between  3 and 10  years.  The net  asset  value  per  share of each  Fund  will
fluctuate in response to changes in the value of its investments.


TO OPEN AN ACCOUNT

     Call your broker, or complete and return the enclosed Account  Application.
Minimum initial  investment is $2,000.  Shares of each State Fund are being made
available  primarily  to  persons  residing  in the  state for which the Fund is
named.  PLEASE CONFIRM THE  AVAILABILITY  OF A FUND IN YOUR STATE BEFORE SENDING
MONEY.

ABOUT THIS PROSPECTUS

     Please read this Prospectus before investing. It is designed to provide you
with  information you ought to know before investing and to help you decide if a
Fund's goals match your own. Keep this document for future reference.

      
     A Statement of  Additional  Information  for the Funds (April 30, 1997)
has been filed with the Securities and Exchange  Commission and is  incorporated
by reference. This free Statement is available by calling: 800-368-2748. 

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

     SHARES OF THE FUNDS ARE NOT DEPOSITS OR  OBLIGATIONS  OF, OR  GUARANTEED OR
ENDORSED BY, ANY BANK,  AND ARE NOT FEDERALLY  INSURED BY THE FDIC,  THE FEDERAL
RESERVE  BOARD,  OR ANY OTHER AGENCY.  WHEN INVESTORS OF THE FUND SELL SHARES OF
THE FUND, THE VALUE MAY BE HIGHER OR LOWER THAN THE AMOUNT ORIGINALLY PAID.

<PAGE>

FUND EXPENSES


<TABLE>
<CAPTION>
National Municipal Intermediate Fund
<S>                                                <C>
A.   Shareholder Transaction Costs
     Maximum Sales Charge on Purchases
     (as a percentage of offering price)           2.75%
     Contingent Deferred Sales Charge              None
B.   Annual Fund Operating Expenses -
     Fiscal Year 1996
     (as a percentage of average net assets)
     Management Fees                               0.70%
     Rule 12b-1 Service and Distribution Fees      0.00%
     Other Expenses                                0.34%
     Total Fund Operating Expenses<F1>             1.04%

California Municipal Intermediate Fund
<S>                                                <C>
A.   Shareholder Transaction Costs
     Maximum Sales Charge on Purchases
     (as a percentage of offering price)           2.75%
     Contingent Deferred Sales Charge              None
B.   Annual Fund Operating Expenses -
     Fiscal Year 1996
     (as a percentage of average net assets)
     Management Fees                               0.70%
     Rule 12b-1 Service and Distribution Fees      0.00%
     Other Expenses                                0.27%
     Total Fund Operating Expenses<F1>             0.97%
<FN>
<F1> Net Fund Operating Expenses after reduction for fees paid indirectly were:
         National 1.01%, California .94%
</FN>
</TABLE>

<TABLE>
<CAPTION>
Arizona Municipal Intermediate Fund
<S>                                                <C>
A.   Shareholder Transaction Costs
     Maximum Sales Charge on Purchases
     (as a percentage of offering price)           2.75%
     Contingent Deferred Sales Charge              None
B.   Annual Fund Operating Expenses -
     Fiscal Year 1996
     (as a percentage of average net assets)
     Management Fees                               0.70%
     Rule 12b-1 Service and Distribution Fees      0.00%
     Other Expenses                                0.67%
     Total Fund Operating Expenses<F2>             1.37%

Florida Municipal Intermediate Fund
<S>                                                <C>
A.   Shareholder Transaction Costs
     Maximum Sales Charge on Purchases
     (as a percentage of offering price)           2.75%
     Contingent Deferred Sales Charge              None
B.   Annual Fund Operating Expenses -
     Fiscal Year 1996
     (as a percentage of average net assets)
     Management Fees                               0.70%
     Rule 12b-1 Service and Distribution Fees      0.00%
     Other Expenses                                0.25%
     Total Fund Operating Expenses<F2>             0.95%
<FN>
<F2> Net Fund Operating Expenses after reduction for fees paid indirectly were:
         Arizona 1.00%, Florida .81%
</FN>
</TABLE>

<TABLE>
<CAPTION>
Maryland Municipal Intermediate Fund
<S>                                                <C>
A.   Shareholder Transaction Costs
     Maximum Sales Charge on Purchases
     (as a percentage of offering price)           2.75%
     Contingent Deferred Sales Charge              None
B.   Annual Fund Operating Expenses -
     Fiscal Year 1996
     (as a percentage of average net assets)
     Management Fees                               0.70%
     Rule 12b-1 Service and Distribution Fees      0.00%
     Other Expenses                                0.34%
     Total Fund Operating Expenses<F3>             1.04%

Michigan Municipal Intermediate Fund
<S>                                                <C>
A.   Shareholder Transaction Costs
     Maximum Sales Charge on Purchases
     (as a percentage of offering price)           2.75%
     Contingent Deferred Sales Charge              None
B.   Annual Fund Operating Expenses -
     Fiscal Year 1996
     (as a percentage of average net assets)
     Management Fees                               0.70%
     Rule 12b-1 Service and Distribution Fees      0.00%
     Other Expenses                                0.34%
     Total Fund Operating Expenses<F3>             1.04%
<FN>
<F3> Net Fund Operating Expenses after reduction for fees paid indirectly were:
         Maryland .94%, Michigan .94%
</FN>
</TABLE>

<TABLE>
<CAPTION>
New York Municipal Intermediate Fund
<S>                                                <C>
A.   Shareholder Transaction Costs
     Maximum Sales Charge on Purchases
     (as a percentage of offering price)           2.75%
     Contingent Deferred Sales Charge              None
B.   Annual Fund Operating Expenses -
     Fiscal Year 1996
     (as a percentage of average net assets)
     Management Fees                               0.70%
     Rule 12b-1 Service and Distribution Fees      0.00%
     Other Expenses                                0.46%
     Total Fund Operating Expenses<F4>            1.16%

Pennsylvania Municipal Intermediate Fund
<S>                                                <C>
A.   Shareholder Transaction Costs
     Maximum Sales Charge on Purchases
     (as a percentage of offering price)           2.75%
     Contingent Deferred Sales Charge              None
B.   Annual Fund Operating Expenses -
     Fiscal Year 1996
     (as a percentage of average net assets)
     Management Fees                               0.70%
     Rule 12b-1 Service and Distribution Fees      0.00%
     Other Expenses                                0.46%
     Total Fund Operating Expenses<F4>             1.16%
<FN>
<F4> Net Fund Operating Expenses after reduction for fees paid indirectly were:
         New York .98%, Pennsylvania .93%
</FN>
</TABLE>

<TABLE>
<CAPTION>
Virginia Municipal Intermediate Fund
<S>                                                <C>
A.   Shareholder Transaction Costs
     Maximum Sales Charge on Purchases
     (as a percentage of offering price)           2.75%
     Contingent Deferred Sales Charge              None
B.   Annual Fund Operating Expenses -
     Fiscal Year 1996
     (as a percentage of average net assets)
     Management Fees                               0.70%
     Rule 12b-1 Service and Distribution Fees      0.00%
     Other Expenses                                0.33%
     Total Fund Operating Expenses<F5>             1.03%
<FN>
<F5> Net Fund Operating Expenses after reduction for fees paid indirectly were:
         Virginia .92%
</FN>
</TABLE>



     C. Example:  You would pay the following  expenses on a $1,000  investment,
assuming (1) 5% annual return; (2) redemption at the end of each period; and (3)
payment of maximum initial sales charge at time of purchase:
<TABLE>
<CAPTION>
Fund                  1 Year            3 Years           5 Years      10 Years
<S>                   <C>               <C>               <C>              <C>
National              $38               $60               $83              $151
Arizona               $40               $68               $97              $181
California            $37               $58               $80              $143
Florida               $37               $57               $78              $140
Maryland              $37               $58               $81              $147
Michigan              $38               $59               $82              $149
New York              $39               $62               $88              $161
Pennsylvania          $39               $62               $87              $159
Virginia              $37               $58               $81              $147
</TABLE>


     The  example,   which  is   hypothetical,   should  not  be   considered  a
representation  of past or future  expenses.  Actual  expenses  may be higher or
lower than those shown.

     Explanation  of  Table:  The  purpose  of the  table  is to  assist  you in
understanding  the various costs and expenses that an investor may bear directly
(shareholder transaction costs) or indirectly (annual fund operating expenses).

     A. Shareholder  Transaction  Costs are charges you pay when you buy or sell
shares of your Fund.  See  "Reduced  Sales  Charges"  at Exhibit A to see if you
qualify  for  possible  reductions  in the sales  charge.  If you request a wire
redemption of less than $1,000, you will be charged a $5 wire fee.


     B.  Annual Fund  Operating  Expenses.  Management  Fees are paid by the
Funds to Calvert Asset Management Company, Inc. for managing the investments and
business  affairs  of each  Fund and  paid to  Calvert  Administrative  Services
Company,  Inc. The Funds will incur Other Expenses for  maintaining  shareholder
records,  furnishing  shareholder  statements and reports,  and other  services.
Management  Fees and Other  Expenses  have already  been  reflected in the share
price and are not charged directly to individual  shareholder  accounts.  Please
refer to "Management of the Funds" for further information. 


     The  National  Municipal  Intermediate  Fund  commenced  operations  on
September 30, 1992,  and the  California  Fund  commenced  operations on May 29,
1992. The Maryland,  Michigan,  New York and Virginia Funds commenced  operation
September  30,  1993.  The Arizona,  Florida and  Pennsylvania  Funds  commenced
operation December 31, 1993. For the first five years of operation of each Fund,
Rule 12b-1 will be limited to 0.15% and may thereafter be 0.25%. The Advisor may
voluntarily  defer fees or assume  expenses of the Funds.  The  following  table
shows what Total Fund Operating  Expenses would have been, without the voluntary
reimbursement of expenses:
Fund Name                      Total Expenses
Arizona                             1.37%
Florida                             .95%
Maryland                            1.04%
Michigan                            1.04%
New York                            1.16%
Pennsylvania                        1.16%
Virginia                            1.03% 

     The Investment  Advisory  Agreement provides that the Advisor may later, to
the extent  permitted  by law,  recapture  any fees it  deferred  or expenses it
assumed  during  the two prior  years;  provided,  however,  that  Total  Annual
Operating  Expenses  for each Fund shall not exceed  2.00% of average net assets
during any year in which the Advisor elects to exercise the recapture provision.
The above table reflects these agreements.

      
     The Funds' Rule 12b-1 fees include an asset-based  sales charge.  Thus,
it is possible that  long-term  shareholders  in the Funds may pay more in total
sales charges than the economic equivalent of the maximum front-end sales charge
permitted by rules of the National  Association of Securities  Dealers,  Inc. In
addition to the compensation itemized above (sales charge and Rule 12b-1 service
and distribution  fees),  certain  broker/dealers  and/or their salespersons may
receive certain  compensation for the sale and distribution of the securities or
for services to the Fund. See the Statement of Additional  Information,  "Method
of Distribution". 

<PAGE>

FINANCIAL HIGHLIGHTS

      
     The following  table provides  information  about the Funds'  financial
history.  It expresses the  information  in terms of a single share  outstanding
throughout the period. The table has been audited by Coopers & Lybrand,  L.L.P.,
independent accountants, whose report on the period from the Funds' commencement
of  operations  through  December 31, 1996,  is included in the Annual Report to
Shareholders for each of the respective periods  presented.  The table should be
read in conjunction  with the financial  statements and their related notes. The
Annual Report to Shareholders is incorporated by reference into the Statement of
Additional Information. 

<TABLE>

<CAPTION>
National Municipal Shares
Year Ended December 31,                          1996
<S>                                              <C>

Net asset value, beginning                       $10.62
Income from investment operations
     Net investment income                       .50
     Net realized and unrealized gain (loss)
         on investments                          (.06)
         Total from investment operations         .44

Distributions from
     Net investment income                       (.50)
     Net realized gains                          --
         Total distributions                     (.50)

Total increase (decrease) in net asset value     (.06)

Net asset value, ending                          $10.56

Total return<F6>                                4.32%

Ratio to average net assets
     Net investment income                       4.83%
     Total expenses<F7>                          1.04%
     Net expenses                                1.01%
     Expenses reimbursed                         --

Portfolio turnover                               23%

Net assets, ending (in thousands)                $45,612

Number of shares outstanding,
ending (in thousands)                            4,319

<FN>
<F6>Total return does not reflect deduction of front-end sales charge.
<F7>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>

</TABLE>


<PAGE>


<TABLE>
<CAPTION>

National Municipal Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>
                 
Net asset value, beginning                       $9.81               $10.42
Income from investment operations
     Net investment income                       .51                 .50
     Net realized and unrealized gain (loss)
         on investments                          .80                 (.62)
         Total from investment operations        1.31                (.12)

Distributions from
     Net investment income                       (.50)               (.49)
     Net realized gains                          --                  --
         Total distributions                     (.50)               (.49)

Total increase (decrease) in net asset value     .81                 (.61)

Net asset value, ending                          $10.62              $9.81

Total return<F8>                                 13.64%              (1.18%)

Ratio to average net assets
     Net investment income                       4.97%               4.88%
     Total expenses<F9>                          .96%                --
     Net expenses                                .94%                .69%
     Expenses reimbursed                         --                  .32%

Portfolio turnover                               57%                 122%

Net assets, ending (in thousands)                $40,146             $36,159

Number of shares outstanding,
ending (in thousands)                            3,780               3,686

<FN>
<F8>Total return does not reflect deduction of front-end sales charge.
<F9>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>

</TABLE>


<PAGE>

<TABLE>
<CAPTION>
                                                                  From Inception
                                                 Year Ended     (Sept. 30, 1992)
                                                 December 31,   through Dec. 31,
National Municipal Shares                        1993                1992
<S>                                              <C>                 <C>   
Net asset value, beginning                       $10.01              $10.00
Income from investment operations
     Net investment income                       .48                 .13
     Net realized and unrealized gain (loss)
         on investments                          .45                 .01
         Total from investment operations        .93                 .14

Distributions from
     Net investment income                       (.48)               (.13)
     Net realized gains                          (.04)               --
         Total distributions                     (.52)               (.13)

Total increase (decrease) in net asset value     .41                 .01

Net asset value, ending                          $10.42              $10.01

Total return<F10>                                9.47%               5.40%

Ratio to average net assets
     Net investment income                       5.01%               5.36%(a)
     Total expenses<F11>                         --                  --
     Net expenses                                .10%                --
     Expenses reimbursed                         .45%                4.34%(a)

Portfolio turnover                               162%                12%

Net assets, ending (in thousands)                $37,467             $1,542

Number of shares outstanding,
ending (in thousands)                            3,596               154

(a) Annualized

<FN>
<F10>Total return does not reflect deduction of front-end sales charge.
<F11>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>

</TABLE>

<PAGE>

<TABLE>
<CAPTION>

California Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $10.51
Income from investment operations
     Net investment income                       .48
     Net realized and unrealized gain (loss)
         on investments                          (.07)
         Total from investment operations        .41

Distributions from
     Net investment income                       (.48)
     Net realized gains                          --
         Total distributions                     (.48)

Total increase (decrease) in net asset value     (.07)

Net asset value, ending                          $10.44

Total return<F12>                                4.04%

Ratio to average net assets
     Net investment income                       4.59%
     Total expenses<F13>                         .97%
     Net expenses                                .94%
     Expenses reimbursed                         --

Portfolio turnover                               25%

Net assets, ending (in thousands)                $35,693

Number of shares outstanding,
ending (in thousands)                            3,419

<FN>
<F12>Total return does not reflect deduction of front-end sales charge.
<F13>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

California Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $9.81               $10.56
Income from investment operations
     Net investment income                       .47                 .48
     Net realized and unrealized gain (loss)
         on investments                          .69                 (.76)
         Total from investment operations        1.16                (.28)

Distributions from
     Net investment income                       (.46)               (.47)
     Net realized gains                          --                  --
         Total distributions                     (.46)               (.47)

Total increase (decrease) in net asset value     .70                 (.75)

Net asset value, ending                          $10.51              $9.81

Total return<F14>                                12.07%              (2.57%)

Ratio to average net assets
     Net investment income                       4.59%               4.67%
     Total expenses<F15>                         .91%                --
     Net expenses                                .89%                .76%
     Expenses reimbursed                         --                  .13%

Portfolio turnover                               47%                 68%

Net assets, ending (in thousands)                $34,424             $34,111

Number of shares outstanding,
ending (in thousands)                            3,276               3,476

<FN>
<F14>Total return does not reflect deduction of front-end sales charge.
<F15>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

                                                                  From Inception
                                                 Year Ended       (May 29, 1992)
                                                 December 31,   through Dec. 31,
California Shares                                1993                1992
<S>                                              <C>                 <C>   
Net asset value, beginning                       $10.24              $10.00
Income from investment operations
     Net investment income                       .53                 .29
     Net realized and unrealized gain (loss)
         on investments                          .36                 .24
         Total from investment operations        .89                 .53

Distributions from
     Net investment income                       (.53)               (.29)
     Net realized gains                          (.04)               --
         Total distributions                     (.57)               (.29)

Total increase (decrease) in net asset value     .32                 .24

Net asset value, ending                          $10.56              $10.24

Total return<F16>                                8.88%               10.00%

Ratio to average net assets
     Net investment income                       5.12%               5.24%(a)
     Total expenses<F17>                         --                  --
     Net expenses                                .21%                --
     Expenses reimbursed                         .12%                .38%(a)

Portfolio turnover                               21%                 3%

Net assets, ending (in thousands)                $35,726             $16,046

Number of shares outstanding,
ending (in thousands)                            3,383               1,567

(a) Annualized

<FN>
<F16>Total return does not reflect deduction of front-end sales charge.
<F17>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

Arizona Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $5.07
Income from investment operations
     Net investment income                       .19
     Net realized and unrealized gain (loss)
         on investments                          (.03)
         Total from investment operations        .16

Distributions from
     Net investment income                       (.20)

Total increase (decrease) in net asset value     (.04)

Net asset value, ending                          $5.03

Total return<F18>                                3.17%

Ratio to average net assets
     Net investment income                       3.96%
     Total expenses<F19>                         1.31%
     Net expenses                                1.00%
     Expenses reimbursed                         .06%

Portfolio turnover                               18%

Net assets, ending (in thousands)                $2,635

Number of shares outstanding,
ending (in thousands)                            524

<FN>
<F18>Total return does not reflect deduction of front-end sales charge.
<F19>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>



<PAGE>

<TABLE>
<CAPTION>

Arizona Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $4.71               $5.00
Income from investment operations
     Net investment income                       .22                 .19
     Net realized and unrealized gain (loss)
         on investments                          .36                 (.29)
         Total from investment operations        .58                 (.10)

Distributions from
     Net investment income                       (.22)               (.19)

Total increase (decrease) in net asset value     .36                 (.29)

Net asset value, ending                          $5.07               $4.71

Total return<F20>                                12.44%              (1.84%)

Ratio to average net assets
     Net investment income                       4.43%               4.13%
     Total expenses<F21>                         .53%                --
     Net expenses                                .41%                .38%
     Expenses reimbursed                         .54%                .97%

Portfolio turnover                               10%                 22%

Net assets, ending (in thousands)                $2,045              $2,004

Number of shares outstanding,
ending (in thousands)                            403                 426

<FN>
<F20>Total return does not reflect deduction of front-end sales charge.
<F21>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>


Florida Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $5.06
Income from investment operations
     Net investment income                       .21
     Net realized and unrealized gain (loss)
         on investments                          (.04)
         Total from investment operations        .17

Distributions from
     Net investment income                       (.21)

Total increase (decrease) in net asset value     (.04)

Net asset value, ending                          $5.02

Total return<F22>                                3.53%
Ratio to average net assets
     Net investment income                       4.28%
     Total expenses<F23>                         .94%
     Net expenses                                .81%
     Expenses reimbursed                         .01%

Portfolio turnover                               19%

Net assets, ending (in thousands)                $5,516

Number of shares outstanding,
ending (in thousands)                            1,098

<FN>
<F22>Total return does not reflect deduction of front-end sales charge.
<F23>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>

</TABLE>


<PAGE>

<TABLE>
<CAPTION>

Florida Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $4.67               $5.00
Income from investment operations
     Net investment income                       .24                 .21
     Net realized and unrealized gain (loss)
         on investments                          .38                 (.33)
         Total from investment operations        .62                 (.12)

Distributions from
     Net investment income                       (.23)               (.21)

Total increase (decrease) in net asset value     .39                 (.33)

Net asset value, ending                          $5.06               $4.67

Total return<F24>                                13.48%              (2.44%)

Ratio to average net assets
     Net investment income                       4.73%               4.64%
     Total expenses<F25>                         .43%                --
     Net expenses                                .35%                .21%
     Expenses reimbursed                         .43%                .80%

Portfolio turnover                               44%                 93%

Net assets, ending (in thousands)                $3,892              $3,387

Number of shares outstanding,
ending (in thousands)                            769                 725

<FN>
<F24>Total return does not reflect deduction of front-end sales charge.
<F25>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

Maryland Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $5.06
Income from investment operations
     Net investment income                       .23
     Net realized and unrealized gain (loss)
         on investments                          (.04)
         Total from investment operations        .19

Distributions from
     Net investment income                       (.22)

Total increase (decrease) in net asset value     (.03)

Net asset value, ending                          $5.03

Total return<F26>                                3.96%

Ratio to average net assets
     Net investment income                       4.59%
     Total expenses<F27>                         1.00%
     Net expenses                                .94%
     Expenses reimbursed                         .04%

Portfolio turnover                               8%

Net assets, ending (in thousands)                $12,023

Number of shares outstanding,
ending (in thousands)                            2,338

<FN>
<F26>Total return does not reflect deduction of front-end sales charge.
<F27>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>



<PAGE>

<TABLE>
<CAPTION>

Maryland Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $4.67               $5.05
Income from investment operations
     Net investment income                       .24                 .24
     Net realized and unrealized gain (loss)
         on investments                          .39                 (.39)
         Total from investment operations        .63                 (.15)

Distributions from
     Net investment income                       (.24)               (.23)

Total increase (decrease) in net asset value     .39                 (.38)

Net asset value, ending                          $5.06               $4.67

Total return<F28>                                13.66%              (2.94%)

Ratio to average net assets
     Net investment income                       4.87%               5.01%
     Total expenses<F29>                         .51%                --
     Net expenses                                .48%                .17%
     Expenses reimbursed                         .43%                .86%

Portfolio turnover                               11%                 77%

Net assets, ending (in thousands)                $9,411              $7,429

Number of shares outstanding,
ending (in thousands)                            1,860               1,589

<FN>
<F28>Total return does not reflect deduction of front-end sales charge.
<F29>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

                                                 From Inception
                                                 (October 1, 1993)
Maryland Shares                                  through Dec. 31, 1993
<S>                                              <C>
Net asset value, beginning                       $5.00
Income from investment operations
     Net investment income                       .04
     Net realized and unrealized gain (loss)
         on investments                          .05
         Total from investment operations        .09

Distributions from
     Net investment income                       (.04)

Total increase (decrease) in net asset value     .05

Net asset value, ending                          $5.05

Total return<F30>                                7.46%

Ratio to average net assets
     Net investment income                       4.42%(a)
     Total expenses<F31>                         --
     Net expenses                                --
     Expenses reimbursed                         .80%(a)

Portfolio turnover                               14%

Net assets, ending (in thousands)                $5,401

Number of shares outstanding,
ending (in thousands)                            1,070

(a) Annualized

<FN>
<F30>Total return does not reflect deduction of front-end sales charge.
<F31>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

Michigan Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $5.12
Income from investment operations
     Net investment income                       .22
     Net realized and unrealized gain (loss)
         on investments                          (.01)
         Total from investment operations        .21

Distributions from
     Net investment income                       (.23)

Total increase (decrease) in net asset value     (.02)

Net asset value, ending                          $5.10

Total return<F32>                                4.19%

Ratio to average net assets
     Net investment income                       4.37%
     Total expenses<F33>                         1.02%
     Net expenses                                .93%
     Expenses reimbursed                         .02%

Portfolio turnover                               18%

Net assets, ending (in thousands)                $5,804

Number of shares outstanding,
ending (in thousands)                            1,137

<FN>
<F32>Total return does not reflect deduction of front-end sales charge.
<F33>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>



<PAGE>

<TABLE>
<CAPTION>

Michigan Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $4.74               $5.09
Income from investment operations
     Net investment income                       .24                 .23
     Net realized and unrealized gain (loss)
         on investments                          .37                 (.35)
         Total from investment operations        .61                 (.12)

Distributions from
     Net investment income                       (.23)               (.23)

Total increase (decrease) in net asset value     .38                 (.35)

Net asset value, ending                          $5.12               $4.74

Total return<F34>                                13.08%              (2.42%)

Ratio to average net assets
     Net investment income                       4.76%               4.76%
     Total expenses<F35>                         .52%                --
     Net expenses                                .48%                .18%
     Expenses reimbursed                         .39%                .84%

Portfolio turnover                               22%                 65%

Net assets, ending (in thousands)                $4,556              $5,255

Number of shares outstanding,
ending (in thousands)                            890                 1,109

<FN>
<F34>Total return does not reflect deduction of front-end sales charge.
<F35>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

                                                 From Inception
                                                 (October 1, 1993)
Michigan Shares                                  through Dec. 31, 1993
<S>                                              <C>
Net asset value, beginning                       $5.00
Income from investment operations
     Net investment income                       .04
     Net realized and unrealized gain (loss)
         on investments                          .09
         Total from investment operations        .13

Distributions from
     Net investment income                       (.04)

Total increase (decrease) in net asset value     .09

Net asset value, ending                          $5.09

Total return<F36>                                10.28%

Ratio to average net assets
     Net investment income                       4.27%(a)
     Total expenses<F37>                         --
     Net expenses                                --
     Expenses reimbursed                         .89%(a)

Portfolio turnover                               --

Net assets, ending (in thousands)                $4,287

Number of shares outstanding,
ending (in thousands)                            842

(a) Annualized

<FN>
<F36>Total return does not reflect deduction of front-end sales charge.
<F37>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

New York Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $5.12
Income from investment operations
     Net investment income                       .21
     Net realized and unrealized gain (loss)
         on investments                          (.02)
         Total from investment operations        .19

Distributions from
     Net investment income                       (.22)
     Net realized gain                           --
         Total distributions                     (.22)

Total increase (decrease) in net asset value     (.03)

Net asset value, ending                          $5.09

Total return<F38>                                3.79%

Ratio to average net assets
     Net investment income                       4.20%
     Total expenses<F39>                         1.13%
     Net expenses                                .98%
     Expenses reimbursed                         .03%

Portfolio turnover                               19%

Net assets, ending (in thousands)                $6,218

Number of shares outstanding,
ending (in thousands)                            1,222

<FN>
<F38>Total return does not reflect deduction of front-end sales charge.
<F39>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

New York Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $4.71               $5.05
Income from investment operations
     Net investment income                       .22                 .23
     Net realized and unrealized gain (loss)
         on investments                          .41                 (.34)
         Total from investment operations        .63                 (.11)

Distributions from
     Net investment income                       (.22)               (.23)

Total increase (decrease) in net asset value     .41                 (.34)

Net asset value, ending                          $5.12               $4.71

Total return<F40>                                13.72%              (2.26%)

Ratio to average net assets
     Net investment income                       4.47%               4.77%
     Total expenses<F41>                         .58%                --
     Net expenses                                .50%                .18%
     Expenses reimbursed                         .49%                1.13%

Portfolio turnover                               13%                 56%

Net assets, ending (in thousands)                $3,573              $2,648

Number of shares outstanding,
ending (in thousands)                            698                 562

<FN>
<F40>Total return does not reflect deduction of front-end sales charge.
<F41>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

                                                 From Inception
                                                 (October 1, 1993)
New York Shares                                  through Dec. 31, 1993
<S>                                              <C>
Net asset value, beginning                       $5.00
Income from investment operations
     Net investment income                       .04
     Net realized and unrealized gain (loss)
         on investments                          .05
         Total from investment operations        .09

Distributions from
     Net investment income                       (.04)

Total increase (decrease) in net asset value     .05

Net asset value, ending                          $5.05

Total return<F42>                                7.22%

Ratio to average net assets
     Net investment income                       3.81%(a)
     Total expenses<F43>                         --
     Net expenses                                --
     Expenses reimbursed                         2.00%(a)

Portfolio turnover                               --

Net assets, ending (in thousands)                $2,236

Number of shares outstanding,
ending (in thousands)                            433

(a) Annualized

<FN>
<F42>Total return does not reflect deduction of front-end sales charge.
<F43>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

Pennsylvania Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $5.10
Income from investment operations
     Net investment income                       .21
     Net realized and unrealized gain (loss)
         on investments                          (.02)
         Total from investment operations        .19

Distributions from
     Net investment income                       (.21)

Total increase (decrease) in net asset value     (.02)

Net asset value, ending                          $5.08

Total return<F44>                                3.92%

Ratio to average net assets
     Net investment income                       4.45%
     Total expenses<F45>                         1.11%
     Net expenses                                .93%
     Expenses reimbursed                         .05%

Portfolio turnover                               9%

Net assets, ending (in thousands)                $4,486

Number of shares outstanding,
ending (in thousands)                            883

<FN>
<F44>Total return does not reflect deduction of front-end sales charge.
<F45>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>



<PAGE>

<TABLE>
<CAPTION>

Pennsylvania Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $4.71               $5.00
Income from investment operations
     Net investment income                       .25                 .22
     Net realized and unrealized gain (loss)
         on investments                          .37                 (.29)
         Total from investment operations        .62                 (.07)

Distributions from
     Net investment income                       (.23)               (.22)

Total increase (decrease) in net asset value     .39                 (.29)

Net asset value, ending                          $5.10               $4.71

Total return<F46>                                13.51%              (1.29%)

Ratio to average net assets
     Net investment income                       5.10%               4.94%
     Total expenses<F47>                         .49%                --
     Net expenses                                .41%                .26%
     Expenses reimbursed                         .54%                .94%

Portfolio turnover                               17%                 96%

Net assets, ending (in thousands)                $2,522              $1,872

Number of shares outstanding,
ending (in thousands)                            495                 398

<FN>
<F46>Total return does not reflect deduction of front-end sales charge.
<F47>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>



<PAGE>

<TABLE>
<CAPTION>

Virginia Shares
Year Ended December 31,                          1996
<S>                                              <C>
Net asset value, beginning                       $5.13
Income from investment operations
     Net investment income                       .22
     Net realized and unrealized gain (loss)
         on investments                          (.03)
         Total from investment operations        .19

Distributions from
     Net investment income                       (.22)

Total increase (decrease) in net asset value     (.03)

Net asset value, ending                          $5.10

Total return<F48>                                3.82%

Ratio to average net assets
     Net investment income                       4.35%
     Total expenses<F49>                         1.00%
     Net expenses                                .92%
     Expenses reimbursed                         .03%

Portfolio turnover                               4%

Net assets, ending (in thousands)                $12,618

Number of shares outstanding,
ending (in thousands)                            2,475

<FN>
<F48>Total return does not reflect deduction of front-end sales charge.
<F49>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>



<PAGE>

<TABLE>
<CAPTION>

Virginia Shares
Year Ended December 31,                          1995                1994
<S>                                              <C>                 <C>   
Net asset value, beginning                       $4.74               $5.06
Income from investment operations
     Net investment income                       .24                 .23
     Net realized and unrealized gain (loss)
         on investments                          .39                 (.32)
         Total from investment operations        .63                 (.09)

Distributions from
     Net investment income                       (.24)               (.23)

Total increase (decrease) in net asset value     .39                 (.32)

Net asset value, ending                          $5.13               $4.74

Total return<F50>                                13.54%              (2.04%)

Ratio to average net assets
     Net investment income                       4.86%               4.87%
     Total expenses<F51>                         .54%                --
     Net expenses                                .51%                .19%
     Expenses reimbursed                         .38%                .86%

Portfolio turnover                               11%                 65%

Net assets, ending (in thousands)                $7,295              $5,866

Number of shares outstanding,
ending (in thousands)                            1,423               1,239

<FN>
<F50>Total return does not reflect deduction of front-end sales charge.
<F51>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

                                                 From Inception
                                                 (October 1, 1993)
Virginia Shares                                  through Dec. 31, 1993
<S>                                              <C>
Net asset value, beginning                       $5.00
Income from investment operations
     Net investment income                       .05
     Net realized and unrealized gain (loss)
         on investments                          .06
         Total from investment operations        .11

Distributions from
     Net investment income                       (.05)

Total increase (decrease) in net asset value     .06

Net asset value, ending                          $5.06

Total return<F52>                                8.65%

Ratio to average net assets
     Net investment income                       4.81%(a)
     Total expenses<F53>                         --
     Net expenses                                --
     Expenses reimbursed                         1.54%(a)

Portfolio turnover                               28%

Net assets, ending (in thousands)                $2,720

Number of shares outstanding,
ending (in thousands)                            537

(a) Annualized

<FN>
<F52>Total return does not reflect deduction of front-end sales charge.
<F53>Effective  December 31, 1995, this ratio reflects total expenses before
reduction for fees paid indirectly; such reductions are included in the ratio of
net expenses.
</FN>
</TABLE>



<PAGE>


INVESTMENT OBJECTIVE AND POLICIES

Investment Objectives

     National  Municipal  seeks to earn the  highest  level of  interest  income
exempt from  federal  income  taxes as is  consistent  with  prudent  investment
management,  preservation of capital, and the quality and maturity objectives of
the Fund.

     National  Municipal  will  invest  at  least  65% of its  total  assets  in
municipal obligations.

     National   Municipal  is  a  nondiversified   (effective  upon  shareholder
approval)  mutual fund that  invests  primarily in  municipal  obligations  with
interest that, for most investors,  is exempt from federal income tax. Municipal
obligations  in which the Series may invest  include,  but are not  limited  to,
general obligation bonds and notes of state and local issuers,  revenue bonds of
various transportation, housing, utilities (e.g., water and sewer), hospital and
other state and local government authorities, tax and revenue anticipation notes
and bond anticipation notes, municipal leases, and certificates of participation
therein,  and private activity bonds. See further  description  below and in the
Statement of Additional  Information.  The municipal  obligations  are fixed and
variable rate. Fixed rate investments are limited to obligations normally having
remaining  maturities of 12 years or less;  variable rate  investments  may have
longer maturities. The average dollar-weighted maturity will be between 3 and 10
years.  Because the Fund may invest in private  activity bonds, a portion of its
dividends may be subject to the federal  alternative minimum tax. See "Dividends
and Taxes."

     The State Funds seek to earn the highest  level of interest  income  exempt
from federal and  specific  state  income  taxes as is  consistent  with prudent
investment  management,  preservation  of capital,  and the quality and maturity
objectives of each Fund.

The State Funds invest in state-specific municipal obligations.

     Each  State Fund  invests  primarily  in a  nondiversified  portfolio  of a
specific state's  municipal  obligations with interest that, for most investors,
is exempt from federal and that state's  income tax.  Municipal  obligations  in
which the Funds invest are fixed and variable rate obligations. The Advisor will
maintain the average dollar-weighted maturity between 3 and 10 years.

     Each  State Fund  invests  at least 65% of its  assets in debt  obligations
issued by or on behalf of the state for which the Fund is named.

     Under normal market  conditions,  each State Fund will attempt to invest at
least 65% of its total assets in municipal  obligations  with  interest  that is
exempt from federal and specific state income tax,  including those issued by or
on  behalf  of the  state  for  which  the  Fund  is  named  and  its  political
subdivisions.  Each State Fund will also attempt to invest its remaining  assets
in  these  obligations,  but  may  invest  the  remaining  assets  in  municipal
obligations of other states,  territories  and possessions of the United States,
the  District  of  Columbia,   and  their  respective   authorities,   agencies,
instrumentalities and political subdivisions.  Dividends you receive from a Fund
that are derived from interest on tax-exempt  obligations of other  governmental
issuers  will be exempt from  federal  income tax,  but will be subject to state
income taxes.  Because the State Funds may invest in private  activity  bonds, a
portion  of the Fund's  dividends  may be  subject  to the  federal  alternative
minimum tax. See "Dividends and Taxes."

Credit Quality

      
     As an operating policy, each Municipal Fund will invest at least 65% of
its total assets in  investment-grade  municipal  obligations.  Investment-grade
obligations  are those which,  at the date of  investment,  are rated within the
four highest grades established by Moody's Investors Services, Inc. (Aaa, Aa, A,
or Baa) or by Standard and Poor's  Corporation (AAA, AA, A, or BBB).  Securities
that are not rated may be purchased by the Funds as part of the 65% total if the
Advisor  determines  that they are of  quality  comparable  to  investment-grade
securities.  Bonds rated BBB or Baa, while still  considered  investment  grade,
have certain  speculative  characteristics and may be more subject to changes in
economic conditions. 

   
     The  remaining  35% of each  Municipal  Fund's  total  may  consist  of
noninvestment-grade  municipal  obligations (rated below Baa or BBB), or unrated
obligations  that the Advisor has  determined  are not  investment  grade.  With
noninvestment-grade  securities  there is a greater  possibility that an adverse
change in the financial  condition of the issuer may affect the issuer's ability
to  pay   principal  and   interest.   There  is  also  a  greater  risk,   with
noninvestment-grade securities, of price declines due to changes in the issuer's
creditworthiness.  Because  the market for  lower-rated  securities  may be less
active ("thinner") than for higher-rated  securities,  market prices may be more
volatile and liquidity in the resale market may be limited. 

     The credit quality of municipal obligations is determined by reference to a
commercial  credit rating service,  such as Moody's Investors  Service,  Inc. or
Standard & Poor's Corporation.  Please refer to the Appendix in the Statement of
Additional  Information  for a  description  of the ratings used by these rating
services.   The  Funds'  Advisor   determines  the  credit  quality  of  unrated
instruments under the supervision of the Funds' Board of Directors/Trustees. See
Management of the Funds. There is no limitation on the percentage of assets that
may be  invested  in unrated  obligations,  which may be less  liquid than rated
obligations of comparable quality.

     Determinations as to credit quality are made at the time of investment.  If
a change in credit quality  occurs,  the Advisor,  under the  supervision of the
Fund's Board of Directors,  will consider  whether it is in the best interest of
the Funds' shareholders to hold or to dispose of the obligation.

Variable and Floating Rate Obligations

     The Funds may invest in variable and floating  rate  obligations.  Variable
rate obligations have a yield that adjusts  periodically based on changes in the
level of prevailing  interest rates.  Floating rate obligations have an interest
rate tied to a known lending rate, such as the prime rate, and are automatically
adjusted  when the known rate  changes.  These  obligations  lessen the  capital
fluctuations usually inherent in fixed income investments,  which diminishes the
risk of capital depreciation of portfolio  investments and of the Funds' shares.
However,  this also means that if interest  rates  decline,  a Fund's yield will
decline,  causing each Fund and its  shareholders  to forego the opportunity for
capital appreciation of the portfolio investments.

Demand Notes

     Each Fund may invest in  floating  rate and  variable  rate  demand  notes.
Demand notes  provide that the holder may demand  payment of the note at its par
value  plus  accrued  interest  by giving  notice to the  issuer.  To ensure the
ability of the issuer to make  payment  upon such  demand,  such notes are often
supported by an unconditional bank letter of credit. Notes with a demand feature
of more than seven days are  considered  illiquid  and are  subject to  purchase
restrictions.  See "Nonfundamental  Investment Restrictions" in the Statement of
Additional Information.

Nondiversified

     There  may  be  risks  associated  with  each  Fund  being  nondiversified.
Specifically,  since a relatively high percentage of the assets of each Fund may
be invested in the obligations of a limited number of issuers,  the value of the
shares of each Fund may be more susceptible to any single economic, political or
regulatory event than the shares of a diversified fund would be.

Interest-Rate Risk

     All fixed income instruments are subject to interest-rate risk; that is, if
the market  interest  rates  rise,  the current  principal  value of a bond will
decline.  In  general,  the longer the  maturity  of the bond,  the  greater the
decline in value. Because the Funds' respective average dollar-weighted maturity
is between 3 and 10 years, the investments would be expected to be more affected
than by a rise in market interest rates than a short-term money market fund, but
less adversely  affected by a rise in market interest rates than those of a fund
which invests in longer-term bonds.

Obligations with Puts Attached

     Each Fund has  authority  to  purchase  securities  at a price  which would
result in a yield to maturity lower than that generally offered by the seller at
the time of purchase, when it can acquire at the same time the right to sell the
securities  back to the seller at an agreed on price at any time during a stated
period or on a certain date. Such a right is generally  denoted as a "put." Puts
may be either  conditional  or  unconditional.  Unconditional  puts are  readily
exercisable in the event of a default in payment of principal or interest on the
underlying securities.

Municipal Leases

     Each  Fund  may  invest  in  municipal  leases.  A  municipal  lease  is an
obligation  of a  government  or  governmental  authority,  not subject to voter
approval, used to finance capital projects or equipment acquisitions and payable
through  periodic  rental  payments.  There are  additional  risks  inherent  in
investing in this type of municipal security.  Unlike municipal notes and bonds,
where a municipality is obligated by law to make interest and principal payments
when due,  funding for lease payments needs to be appropriated  each fiscal year
in the budget. It is possible that a municipality will not appropriate funds for
lease  payments.  The Advisor  considers risk of  cancellation in its investment
analysis.  The Funds may purchase unrated municipal leases.  The Advisor,  under
supervision of the Boards of Directors/Trustees,  is responsible for determining
the credit  quality of such  leases on an ongoing  basis.  The Funds will invest
only in municipal  leases that meet their credit quality  restrictions.  Certain
municipal leases may be considered  illiquid and subject to the Funds' limits on
illiquid  investments.   The  Boards  of  Directors/Trustees   have  established
guidelines  for  determining  whether a lease is liquid.  See the  Statement  of
Additional  Information  for the factors  considered by the Board in determining
liquidity and valuation of leases.

When-Issued Purchases

     New issues of municipal  obligations  are offered on a  when-issued  basis;
that is,  delivery and payment for the  securities  normally take place 15 to 45
days after the date of the  transaction.  The payment  obligation  and the yield
that will be  received  on the  securities  are each fixed at the time the buyer
enters into the  commitment.  The Funds will only make  commitments  to purchase
such securities with the intention of actually acquiring the securities, but may
sell these securities  before the settlement date if it is deemed advisable as a
matter of investment strategy.

Temporary Investments

     For  liquidity  purposes or pending the  investment  of the proceeds of the
sale of its shares,  a Fund may invest in and derive up to 35% (20% for National
Municipal and  California)  of its income from taxable  short-term  money market
type investments.  Interest earned from such taxable investments will be taxable
to you as ordinary  income unless you are otherwise  exempt from taxation.  Such
investments  will be of investment  grade,  or, if unrated,  determined to be of
equivalent credit quality by the Advisor.

Financial Futures, Options, and Other Investment Techniques


     Each Municipal Fund can use various  techniques to increase or decrease its
exposure to changing  security  prices,  interest  rates,  or other factors that
affect security  values.  These techniques may involve  derivative  transactions
such as buying and selling  options and futures  contracts and leveraged  notes,
entering into swap agreements,  and purchasing indexed securities. The Funds can
use these  practices  either as a substitution  for or as protection  against an
adverse   move  in  the  Fund's   portfolio   to  adjust  the  risk  and  return
characteristics of the Fund's portfolio. If the Advisor judges market conditions
incorrectly  or employs a strategy that does not correlate  well with the Fund's
investments,  or if the  counterparty  to the  transaction  does not  perform as
promised, these techniques could result in a loss. These techniques may increase
the volatility of a Fund and may involve a small  investment of cash relative to
the magnitude of the risk assumed. Any instruments determined to be illiquid are
subject to the Fund's 15% restriction on illiquid securities.  See the Statement
of Additional Information for more detail about these strategies.

     Under  certain  circumstances,  the  Municipal  Funds may purchase and sell
certain  financial futures contracts and certain options on futures contracts to
hedge  investments  in  municipal  securities.   A  financial  futures  contract
obligates the seller of a contract to deliver -- and the purchaser of a contract
to take delivery of -- the type of financial instrument covered by the contract.
In the case of index-based futures contracts, the obligation is in the form of a
cash settlement at a specific time for a specific price.

     The Funds may only  engage  in  futures  transactions  for the  purpose  of
hedging their investments in municipal  securities against declines in value and
to hedge  against  increases  in the cost of  securities  the  Funds  intend  to
purchase.  A sale of financial  futures  contracts may provide a hedge against a
decline in the value of portfolio  securities  because such  depreciation may be
offset,  in whole or in part, by an increase in the value of the position in the
futures  contracts.  Similarly,  a purchase of financial  futures  contracts may
provide a hedge  against an  increase in the cost of  securities  intended to be
purchased,  because such  appreciation may be offset, in whole or in part, by an
increase in the value of the position in the futures contracts.

Types of Futures Contracts Purchased

     The Advisor intends to deal, on behalf of the Funds,  in futures  contracts
based on The Bond Buyer  Municipal Bond Index, a  price-weighted  measure of the
market value of 40 large,  recently-issued  tax-exempt  bonds,  and to engage in
transactions in exchange-listed  futures contracts on U.S. Treasury  securities.
The Funds may also engage in  transactions in other futures  contracts,  such as
futures contracts on other municipal bond indices that become available,  if the
Advisor  believes such  contracts  would be  appropriate  for hedging the Funds'
investments in municipal securities.

     When a Fund  purchases a futures  contract,  it will  maintain an amount of
cash,  cash  equivalents  (for  example,   commercial  paper  and  daily  tender
adjustable  notes)  or  short-term  high  grade  fixed  income  securities  in a
segregated account with the Fund's custodian, so that the segregated amount plus
the amount of initial  and  variation  margin  held in the account of its broker
equals the market value of the futures  contract,  thereby ensuring that the use
of such futures contract is unleveraged. It is not anticipated that transactions
in futures will have the effect of increasing portfolio turnover.

Closing out a Futures Position -- Risks

     A Fund may close out its  position in a futures  contract or an option on a
futures contract only by entering into an offsetting transaction on the exchange
on which the position was  established  and only if there is a liquid  secondary
market  for the  futures  contract.  If it is not  possible  to close a  futures
position entered into by the Fund, the Fund could be required to make continuing
daily cash payments of variation margin in the event of adverse price movements.
In such  situations,  if the Fund  has  insufficient  cash,  it may have to sell
portfolio  securities to meet daily margin  requirements at a time when it would
be disadvantageous to do so. The inability to close futures or options positions
could have an adverse effect on the Fund's ability to hedge  effectively.  There
is also risk of loss by the Fund of margin  deposits in the event of  bankruptcy
of a broker with whom the Fund has an open position in a futures  contract.  The
success of a hedging  strategy  depends on the Advisor's  ability to predict the
direction of interest  rates and other  economic  factors.  The  correlation  is
imperfect between movements in the prices of futures or options  contracts,  and
the movements of prices of the securities  which are subject to the hedge.  If a
Fund  used a futures  or  options  contract  to hedge  against a decline  in the
market,  and the market later  advances (or  vice-versa),  the Fund may suffer a
greater loss than if it had not hedged.

     Please  refer  to the  Statement  of  Additional  Information  for  further
information on futures contracts.

Special considerations regarding single-state municipal obligations

     There is risk inherent in investing primarily in the obligations of any one
state,  since  economic  and  political  changes in the state may  affect  those
obligations. Since each State Fund invests primarily in municipal obligations of
individual states and is thereby limited in its alternative  investment choices,
the  performance of a State Fund may be affected by local  economic  conditions,
generally   and  the   fiscal/budgetary   condition   of  the  State  and  other
municipalities in which a State Fund may invest.  With respect to any state, you
should be aware that certain proposed state or local constitutional  amendments,
legislative  measures,  executive  orders,  administrative  regulations or voter
initiatives,  in addition to local economic conditions,  could result in adverse
consequences  affecting the ability of the state or its  municipalities  to meet
their  obligations  in a timely  manner,  which,  in turn,  could affect a State
Fund's performance.

Other Policies

     Each  Fund may  temporarily  borrow  money  from  banks to meet  redemption
requests,  but such  borrowing may not exceed 10% of the value of a Fund's total
assets. The Funds have adopted certain fundamental investment restrictions which
are discussed in detail in the Statement of Additional Information.

YIELD AND TOTAL RETURN

      
     Yield refers to income generated by an investment over a period of time. 


     
     Yield  measures  the current  investment  performance,
which is the rate of income on portfolio investments divided by the share price.
To  determine  yield,  (1) net  investment  income is  computed  by  adding  all
investment  income  earned  by a  Fund  over a  30-day  period  and  subtracting
expenses,  (2) dividing by the average number of  outstanding  shares during the
period,  and (3) annualizing the result based on the maximum  offering price per
share on the last day of the period.  Yields are calculated  separately for each
series  according to accounting  methods that are standardized for all stock and
bond funds. 

Taxable Equivalent Yield

     
     A Fund may  advertise its "taxable  equivalent  yield."
The taxable  equivalent  yield is the yield that you would be required to obtain
from taxable  investments to equal the yield of the Fund,  all or a portion of
which may be exempt from federal income taxes.  The federal  taxable  equivalent
yield is computed by taking the portion of the Fund's  yield exempt from regular
federal income tax and multiplying the exempt yield by a factor based on a given
income tax rate,  then  adding the  portion of the yield that is not exempt from
such income tax.  The double  (combined  state and federal)  taxable  equivalent
yield is computed by taking the portion of the Fund's  yield exempt from regular
federal and state income tax and  multiplying the exempt yield by a factor based
on a given  income tax rate,  then  adding the  portion of the yield that is not
exempt from such income tax.  The factor that is used to  calculate  the taxable
equivalent  yield  is the  reciprocal  of the  difference  between  one  and the
applicable income tax rate, which will be stated in the advertisement. 


     A Fund may  advertise  its total  return.  Total return is
based on historical results and is not intended to indicate future performance.



      Total return  includes not only the effect of income dividends but also
 any  change in net asset  value,  or  principal  amount,  during the stated
 period.  Total return shows overall change in value,  including  changes in
 share price and assuming  reinvestment  of all  dividends  and capital gain
 distributions.  Cumulative total return reflects  performance over a stated
 period of time.  Average  annual  total return  reflects  the  hypothetical
 annual compounded return that would have produced the same cumulative total
 return if  performance  had been constant over the entire  period.  Because
 average annual returns tend to smooth out variations in returns, you should
 recognize that they are not the same as actual year-by-year  results.  Both
 types  of total  returns  usually  will  include  the  effect  of  paying a
 front-end  sales charge.  Of course,  total returns will be higher if sales
 charges are not taken into account.  Quotations of "return  without maximum
 load" do not reflect  deduction of the sales  charge.  You should  consider
 these  figures  only if you  qualify  for a reduced  sales  charge,  or for
 purposes of comparison  with  comparable  figures which also do not reflect
 sales charges,  such as mutual fund averages  compiled by Lipper Analytical
 Services,  Inc. Further  information  about performance is contained in the
 Annual Report to Shareholders, which may be obtained without charge. 

MANAGEMENT OF THE FUNDS

     The  Boards of  Directors/Trustees  supervise  the  activities  and  review
contracts with companies that provide the Funds with services.

     The  Arizona,   California,   Maryland,   Michigan,   National,  New  York,
Pennsylvania  and Virginia  Municipal  Intermediate  Funds are series of Calvert
Municipal Fund, Inc., an open-end management  investment company incorporated in
Maryland.  The Florida Municipal Intermediate Fund is a series of First Variable
Rate Fund for Government  Income, an open-end  management company organized as a
Massachusetts Business Trust.

      
     The Funds are not  required to hold annual  shareholder  meetings,  but
special meetings may be called for certain purposes such as electing or removing
Directors/Trustees,  changing fundamental  policies,  or approving an investment
advisory contract. As a shareholder,  you receive one vote for each share of the
Fund you own.

     Calvert  Group is one of the  largest  investment  management  firms in the
Washington, D.C. area.

    
     Calvert Group, Ltd., parent of the Funds' Advisor,  transfer agent, and
distributor,  is a  subsidiary  of  Acacia  Mutual  Life  Insurance  Company  of
Washington,  D.C., and is one of the largest investment  management firms in the
Washington,  D.C. area.  Calvert Group, Ltd. and its subsidiaries are located at
4550 Montgomery Avenue,  Suite 1000N,  Bethesda,  Maryland 20814. As of December
31,  1996,  Calvert  Group  managed  and  administered  assets in excess of $5.2
billion in more than 220,000 shareholder and depositor accounts. 

Portfolio Managers

     
     The Funds are managed by Reno J.  Martini,  Senior Vice  President  and
Chief Investment Officer of Calvert Asset Management  Company,  Inc.  ("CAMCO");
and Daniel K. Hayes, Vice President, Investments (CAMCO). Mr. Martini has served
as the  Manager of the  Portfolio  Investments  Department  since  1985,  and as
portfolio  manager for CAMCO since 1982.  Mr.  Hayes serves as head of Portfolio
Research and has been a portfolio manager for CAMCO since 1984.


Calvert Asset Management serves as Advisor to the Funds.

      
     Calvert Asset Management Company,  Inc. is each Fund's Advisor,  and is
entitled to an annual fee, payable monthly,  of 0.60% of each Fund's average net
assets.  The Advisor may in its discretion and on a voluntary basis only,  waive
or defer  its fees or  assume  each  Fund's  operating  expenses.  During  1996,
National  and  California  each paid  investment  advisory  fees of  0.60%.  The
Investment Advisory Agreement provides that the Advisor may later, to the extent
permitted by law,  recapture  any fees it waived,  or expenses it assumed  under
this limitation.  The Advisor provides each Fund with investment supervision and
management,  administrative  services and office space;  furnishes executive and
other  personnel  to  the  Funds;   and  pays  the  salaries  and  fees  of  all
Directors/Trustees  who are affiliated  persons of the Advisor.  The Advisor may
also assume and pay certain  advertising and  promotional  expenses of the Funds
and  reserves  the  right to  compensate  broker-dealers  in  return  for  their
promotional or administrative services.

     Calvert Administrative  Services Company provides  administrative  services
for the Funds.

    
     Calvert  Administrative  Services Company ("CASC"), an affiliate of the
Advisor,  provides certain administrative  services for the Funds, including the
preparation  of  regulatory   filings  and   shareholder   reports,   the  daily
determination  of each Fund's net asset value per share and  dividends,  and the
maintenance of its portfolio and general accounting records.  For providing such
services,  CASC received an annual fee, payable monthly, of 0.10% of each Fund's
average net assets per year. 

Calvert Distributors, Inc. serves as underwriter to market shares of the Funds.

     Calvert Distributors,  Inc. ("CDI") is the Funds' principal underwriter and
distributor,  and is an  affiliate  of  the  Advisor.  Under  the  terms  of its
underwriting  agreements for the Funds,  CDI markets and distributes each Fund's
shares and is responsible for preparing  advertising and sales  literature,  and
printing and mailing prospectuses to prospective investors.

The transfer agent keeps your account records.

     Calvert  Shareholder  Services,  Inc., an affiliate of the Advisor,  is the
transfer, dividend disbursing and shareholder servicing agent for the Funds.

SHAREHOLDER GUIDE

Opening An Account

      
     You can buy shares in several ways which are described  here and in the
chart below. 

     
     An account  application  accompanies this  prospectus.  A completed and
signed application is required for each new account you open,  regardless of the
method you choose for making your initial  investment.  Additional  forms may be
required from corporations,  associations,  and certain fiduciaries. If you have
any questions or need extra applications,  call your broker, or Calvert Group at
800-368-2748. 

Sales Charge

    
     Fund  shares are  offered at net asset  value  plus a  front-end  sales
charge as follows: 

<TABLE>
<CAPTION>

Amount of                  As a % of        As a % of         Allowed to Dealers
Investment                 offering         net amount        as a % of offering
                           price            invested          price
<S>                        <C>              <C>               <C>

Less than $50,000          2.75%            2.83%             2.25%
$50,000 but less
than $100,000              2.25%            2.30%             1.75%
$100,000 but less
than $250,000              1.75%            1.78%             1.25%
$250,000 but less
than $500,000              1.25%            1.27%             0.95%
$500,000 but less
than $1,000,000            1.00%            1.01%             0.80%
$1,000,000 and over        0.00%            0.00%             0.10%*
</TABLE>

     
     *Payments will be made less redemptions.  For either choice,  quarterly
trailing  commissions will begin in the thirteenth month. CDI reserves the right
to recoup any portion of the amount paid to the dealer if the  investor  redeems
some or all of the shares  from the Funds  within  twelve  months of the time of
purchase. 

      
     Sales  charges on Fund shares may be reduced or  eliminated  in certain
cases. See Exhibit A to this prospectus. 

     The sales charge is paid to CDI, which in turn normally  reallows a portion
to your  broker-dealer.  Upon written  notice to dealers with whom it has dealer
agreements,  CDI may reallow up to the full applicable sales charge.  Dealers to
whom 90% or more of the entire  sales  charge is  reallowed  may be deemed to be
underwriters under the Securities Act of 1933.

      
     In addition to any sales  charge  reallowance  or  finder's  fee,  your
broker-dealer,  or other  financial  service firm through  which your account is
held,  currently  will be paid periodic  service fees at an annual rate of up to
0.15% of the  average  daily net asset  value of Fund  shares  held in  accounts
maintained by that firm. 

 
     Distribution Plan 

     
     Each Fund has adopted a Distribution Plan, which provides for payments,
which are limited to an annual rate of 0.15% for each Fund's first five years of
operation  (and 0.25%  thereafter)  of the average daily net asset value of Fund
shares,  to pay expenses  associated with the distribution and servicing of Fund
shares. Amounts paid by the Funds to CDI under the Distribution Plan are used to
pay to dealers and others,  including  CDI  salespersons  who service  accounts,
service  fees,  and to pay CDI  for its  marketing  and  distribution  expenses,
including,  but not limited to,  preparation of advertising and sales literature
and the printing and mailing of  prospectuses to prospective  investors.  During
the 1996 fiscal period, the Funds paid no Distribution Plan expenses. 




Arrangements with Broker-Dealers and Others 

     CDI may also pay additional  concessions,  including  non-cash  promotional
incentives,  such as  merchandise  or trips,  to  dealers  employing  registered
representatives who have sold or are expected to sell a minimum dollar amount of
shares of the Funds and/or  shares of other Funds  underwritten  by CDI. CDI may
make  expense  reimbursements  for  special  training  of a dealer's  registered
representatives,  advertising  or equipment,  or to defray the expenses of sales
contests.  Eligible marketing and distribution  expenses may be paid pursuant to
the Funds' Rule 12b-1 Distribution Plans.



                                HOW TO BUY SHARES
                                    

Method            New Accounts                       Additional Investments

By Mail           $2,000 minimum                     $250 minimum

                  Please make your check             Please make your check
                  payable to the appropriate         payable to the appropriate
                  Fund and mail it with your         Fund and mail it with your
                  application to:                    investment slip to:

                  Calvert Group                      Calvert Group
                  P.O. Box 419544                    P.O. Box 419739
                  Kansas City, MO                    Kansas City, MO
                  64141-6544                         64141-6739

By Registered, Certified, or Overnight Mail:
                  Calvert Group                      Calvert Group
                  c/o NFDS, 6th Floor                c/o NFDS, 6th Floor
                  1004 Baltimore                     1004 Baltimore
                  Kansas City, MO                    Kansas City, MO
                  64105-1807                         64105-1807

Through Your Broker      $2,000 minimum              $250 minimum

At the Calvert    Visit the Calvert Branch Office to make investments by check.
Branch Office     See back cover page for the address.

FOR ALL OPTIONS BELOW, PLEASE CALL YOUR BROKER, OR CALVERT GROUP AT 800-368-2745

By Exchange       $2,000 minimum                     $250 minimum
(From your account in another Calvert Group Fund)

     When opening an account by exchange,  your new account must be  established
with the same  name(s),  address  and  taxpayer  identification  number  as your
existing Calvert account.

By Bank Wire      $2,000 minimum                     $250 minimum

By Calvert Money`   Not Available for                $50 minimum
Controller*         Initial Investment

     *Please  allow  sufficient  time for Calvert  Group to process your initial
request for this service,  normally 10 business  days.  The maximum  transaction
amount is  $300,000,  and your  purchase  request  must be received by 4:00 p.m.
Eastern time.

NET ASSET VALUE

How share price is determined.

      
     Net  asset  value  ("NAV")  refers to the  worth of one  share.  NAV is
computed  by  adding  the value of all  portfolio  holdings  and  other  assets,
deducting  liabilities  and then  dividing  the  result by the  number of shares
outstanding.  The NAV will vary daily  based on the market  values of the Funds'
investments.  These values are  calculated  at the close of each  business  day,
which  coincides  with the closing of the regular  session of the New York Stock
Exchange (normally 4:00 p.m. Eastern time). The Funds are open for business each
day the New York Stock Exchange is open. 

     All share  purchases will be confirmed and credited to your account in full
and fractional shares (rounded to the nearest 1/1000 of a share).

     Portfolio   securities   and  other  assets  are  valued  based  on  market
quotations.  If quotations are not available,  securities are valued by a method
that the  appropriate  Fund's Board of  Directors/Trustees  believes  accurately
reflects fair value.

WHEN YOUR ACCOUNT WILL BE CREDITED

     Before you buy shares,  please read the following  information to make sure
your investment is accepted and credited properly.

     
     All of your purchases  must be made in U.S.  dollars and checks must be
drawn on U.S.  banks.  No cash will be accepted.  The Fund reserves the right to
suspend the  offering  of shares for a period of time or to reject any  specific
purchase  order.  If your check is not paid,  your purchase will be canceled and
you will be charged a $10 fee plus costs incurred by the Fund. When you purchase
by check or with Calvert Money Controller, those funds will be on hold for up to
10 business days from the date of receipt.  During that period,  the proceeds of
redemptions  against  those  funds  will be held  until  the  transfer  agent is
reasonably satisfied that the purchase payment has been collected. To avoid this
collection  period,  you can wire federal funds from your bank, which may charge
you a fee. As a  convenience,  check  purchases  can be  received  at  Calvert's
offices for overnight  mail delivery to the transfer  agent and will be credited
the next business day. Any check purchase  received  without an investment  slip
may cause delayed crediting. 

     Certain financial  institutions or broker-dealers  that have entered into a
sales  agreement with the  Distributor  may enter  confirmed  purchase orders on
behalf of customers by phone,  with payment to follow within a number of days of
the order as specified  by the  program.  If payment is not received in the time
specified,  the financial institution could be held liable for resulting fees or
losses.

EXCHANGES

       
     Each  exchange  represents  the  sale of  shares  of one  Fund and the
purchase of shares of another.  Therefore,  you could  realize a taxable gain or
loss on the transaction. 

     
     If your  investment  goals  change,  the  Calvert  Group of Funds has a
variety of investment  alternatives that includes common stock funds, tax-exempt
and corporate bond funds,  and money market funds.  The exchange  privilege is a
convenient way to buy shares in other Calvert Group Funds in order to respond to
changes in your goals or in market conditions.  However,  to protect your Fund's
performance and to prevent additional costs,  Calvert Group discourages frequent
exchanges.  Shareholders  (and those  managing  multiple  accounts) who make two
purchases  and two  exchange  redemptions  of shares of the same fund during any
6-month  period will be given written  notice that they may be  prohibited  from
making additional investments. These policies do not prohibit you from redeeming
shares of the funds and do not apply to trades  solely among money market funds.
Before you make an exchange from a Fund or Portfolio, please note the following:

     o Call your  broker  or a  Calvert  representative  for  information  and a
prospectus for any of Calvert's other Funds  registered in your state.  Read the
prospectus of the Fund or Portfolio into which you want to exchange for relevant
information, including class offerings.

     o  Complete  and  sign  an  application  for an  account  in  that  Fund or
Portfolio,  taking  care to  register  your new  account  in the  same  name and
taxpayer  identification  number as your existing Calvert  account(s).  Exchange
instructions  may then be given by telephone if telephone  redemptions have been
authorized and the shares are not in certificate form. See "Selling Your Shares"
and "How to Sell Your  Shares -- By  Telephone,  and -- By  Exchange  To Another
Calvert Group Fund."

     o  
     You may exchange shares on which you have already paid a sales charge
at  Calvert  Group  and  shares   acquired  by   reinvestment  of  dividends  or
distributions  into another fund at no additional charge. You may exchange Class
C shares  for  shares of another  fund,  but you will have to pay the  front-end
sales charge, if applicable. 

     
     For  purposes of the exchange  privilege  the Fund is related to Summit
Cash Reserves Fund by investment and investor  services.  Each Fund reserves the
right to terminate or modify the exchange  privilege in the future with 60 days'
written notice. 

OTHER CALVERT GROUP SERVICES

Calvert Information Network

24 hour yield and prices

     
     Calvert  Group  has a  round-the-clock  telephone  service  that  lets
existing  customers  obtain  prices,  yields  and  account  balances.   Complete
instructions for this service may be found on the back of each statement. 

Calvert Money Controller

     Calvert  Money  Controller  eliminates  the delay of mailing a check or the
expense of wiring funds. You can request this free service on your application.

     This  service  allows you to  authorize  electronic  transfers  of money to
purchase or sell shares.  You use Calvert Money  Controller  like an "electronic
check" to move money ($50 to  $300,000)  between your bank account and your Fund
account  with one phone  call.  Allow two  business  days after the call for the
transfer to take place; for money recently invested, allow normal check clearing
time (up to 10 business days) before redemption proceeds are sent to your bank.

      
     You may  also  arrange  systematic  monthly  or  quarterly  investments
(minimum  $50)  into  your  Calvert  Group  account.  After  you give us  proper
authorization,  your bank  account will be debited to purchase  Fund  shares.  A
debit  entry  will  appear on your  bank  statement.  If you would  like to make
arrangements for systematic  monthly or quarterly  redemptions from your Calvert
account, call your broker or Calvert for more information. 

Telephone Transactions

Calvert Group may record all telephone calls.

     You may purchase,  redeem,  or exchange shares,  wire funds and use Calvert
Money Controller by telephone if you have pre-authorized  service  instructions.
You  automatically  have telephone  privileges  unless you elect otherwise.  The
Funds,  the transfer  agent and their  affiliates  are not liable if they act in
good faith on telephone  instructions  relating to your account, so long as they
follow  reasonable  procedures to determine that the telephone  instructions are
genuine. Such procedures may include recording the telephone calls and requiring
some  form of  personal  identification.  You  should  verify  the  accuracy  of
telephone transactions immediately upon receipt of your confirmation statement.

Optional Services

Complete the application for the easiest way to establish services.

     The easiest  way to  establish  optional  services  on your  Calvert  Group
account is to select the  options  you desire  when you  complete  your  account
application.  If you wish to add other options later, you may have to provide us
with additional  information and a signature guarantee.  Please call your broker
or Calvert Investor  Relations at 800-368-2745 for further  assistance.  For our
mutual  protection,  we may require a  signature  guarantee  on certain  written
transaction  requests.  A signature  guarantee verifies the authenticity of your
signature,  and may be obtained  from any bank,  savings  and loan  association,
credit union,  trust company,  broker-dealer  firm or member of a domestic stock
exchange. A signature guarantee cannot be provided by a notary public.

Householding of General Mailings

 
Householding reduces Fund expenses while saving paper postage expense. 

     
     If you have multiple  accounts with Calvert,  you may receive  combined
mailings  of  some  shareholder  information,  such  as  statements,   confirms,
prospectuses,  semi-annual and annual reports.  Please contact Calvert  Investor
Relations at 800-368-2745 to receive additional copies of information. 

Special Services and Charges

     The Funds pay for  shareholder  services but not for special  services that
are  required  by a  few  shareholders,  such  as a  request  for  a  historical
transcript  of an account.  You may be required to pay a research  fee for these
special services.

     If you are  purchasing  shares  of a Fund  through a  program  of  services
offered by a  securities  dealer or financial  institution,  you should read the
program  materials in conjunction with this Prospectus.  Certain features may be
modified in these  programs,  and  administrative  charges may be imposed by the
broker-dealer or financial institution for the services rendered.

SELLING YOUR SHARES

     You may redeem all or a portion of your shares on any  business  day.  Your
shares  will be  redeemed  at the next net asset  value  calculated  after  your
redemption request is received and accepted. See below for specific requirements
necessary to make sure your redemption request is acceptable. Remember that your
Fund may hold payment on the  redemption  of your shares until it is  reasonably
satisfied that  investments  made by check or by Calvert Money  Controller  have
been collected (normally up to 10 business days).

Redemption Requirements to Remember

     To  ensure  acceptance  of  your  redemption  request,  please  follow  the
procedures described here and below.

     Once your shares are redeemed, the proceeds will normally be sent to you on
the next business day, but if making immediate  payment could adversely affect a
Fund,  it may take up to seven (7) days.  Calvert Money  Controller  redemptions
generally will be credited to your bank account on the second business day after
your phone call.  When the New York Stock Exchange is closed (or when trading is
restricted) for any reason other than its customary weekend or holiday closings,
or under  any  emergency  circumstances  as  determined  by the  Securities  and
Exchange Commission, redemptions may be suspended or payment dates postponed.

Minimum account balance is $1,000.

     Please  maintain a balance in your account of at least $1,000 per Fund, per
class. If, due to redemptions, your account falls below $1,000, it may be closed
and the  proceeds  mailed to you at the  address  of  record.  You will be given
notice that your account will be closed after 30 days unless you make additional
investments to increase your account balance to the $1,000 minimum.
HOW TO SELL YOUR SHARES

By Mail To:

 
Calvert Group
P.O. Box 419544
Kansas City, MO
64141-6544

     You may redeem  available  funds from your account at any time by sending a
letter of instruction,  including your name, account and Fund number, the number
of shares or dollar amount, and where you want the money to be sent.  Additional
requirements,  below, may apply to your account.  The letter of instruction must
be signed by all required  authorized signers. If you want the money to be wired
to a bank not previously  authorized,  then a voided bank check must be enclosed
with your  letter.  If you do not have a voided check or if you would like funds
sent to a different  address or another  person,  your letter must be  signature
guaranteed.

Type of                    Requirements
Registration

Corporations               Letter of instruction and a corporate resolution,
Associations               signed by person(s) authorized to act on the account,
                           accompanied by signature guarantee(s).

     Trusts                Letter of instruction signed by the Trustee(s) 
                           (as Trustee),  with a signature  guarantee.  
                           (If the Trustee's name is not registered on your
                           account, provide a copy of the trust document, 
                           certified within the last 60 days.)

By Telephone

      
     Please call  800-368-2745.  You may redeem  shares from your account by
telephone  and have your  money  mailed to your  address of record or wired to a
bank you have previously authorized. A charge of $5 is imposed on wire transfers
of less than $1,000.  See  "Telephone  Transactions".  If for any reason you are
unable to reach the Funds by telephone,  whether due to mechanical difficulties,
heavy market volume, or otherwise,  you may send a written redemption request to
the Funds by overnight  mail, or, if your account is held through a broker,  see
"Through Your Broker" below. 

Calvert Money Controller

     Please  allow  sufficient  time for Calvert  Group to process  your initial
request for this service  (normally 10 business  days).  You may also  authorize
automatic  fixed amount  redemptions by Calvert Money  Controller.  All requests
must  received  by 4:00 p.m.  Eastern  time.  Accounts  cannot be closed by this
service.

Exchange to Another Calvert Group Fund

     You must meet the minimum investment requirement of the other Calvert Group
Fund or Portfolio.  You can only exchange between accounts with identical names,
addresses and taxpayer  identification number, unless previously authorized with
a signature-guaranteed letter. See "Exchanges."

Systematic Check Redemptions

      
     If you maintain an account  with a balance of $10,000 or more,  you may
have up to two (2) redemption  checks for a fixed amount sent to you on the 15th
of the month,  simply by sending a letter with all  information,  including your
account  number,  and the  dollar  amount  ($100  minimum).  If you would like a
regular check mailed to another  person or place,  your letter must be signature
guaranteed. 

Through your Broker

     If your account is held in your broker's name ("street  name"),  you should
contact your broker directly to transfer, exchange or redeem shares.

DIVIDENDS AND TAXES

Dividends from net investment income are paid monthly.

     
     Net  investment  income  consists of interest  income,  net  short-term
capital  gains,  if any, and dividends  declared and paid on  investments,  less
expenses.  Each  year,  the  Funds  distribute  substantially  all of their  net
investment income to shareholders. 

Dividend payment options

     Dividends and any distributions  are automatically  reinvested at net asset
value in  additional  shares of the Funds unless you elect to have the dividends
of $10 or more paid in cash (by check or by Calvert Money Controller). Dividends
and  distributions  may be automatically  invested in an identically  registered
account  with the  same  account  number  in any  other  Calvert  Group  Fund or
Portfolio at net asset value. If reinvested in the same Fund account, new shares
will be  purchased  at net  asset  value  on the  reinvestment  date,  which  is
generally 1 to 3 days prior to the payment date.  You must be a  shareholder  on
the record date to receive dividends. You must notify the Funds in writing prior
to the  record  date to  change  your  payment  options.  If you  elect  to have
dividends and/or  distributions paid in cash, and the U.S. Postal Service cannot
deliver the check,  or if it remains  uncashed  for six  months,  it, as well as
future dividends and distributions, will be reinvested in additional shares.

"Buying a Dividend"

     At the  time of  purchase,  the  share  price  of  your  Fund  may  reflect
undistributed  income,  capital gains or unrealized  appreciation of securities.
Any income or capital gains from these amounts  which are later  distributed  to
you are fully taxable. On the record date for a distribution,  your Fund's share
value is  reduced  by the amount of the  distribution.  If you buy  shares  just
before the record date ("buying a dividend") you will pay the full price for the
shares and then receive a portion of the price back as a taxable distribution.

Federal Taxes

     Dividends  derived  from  interest  on  municipal  obligations   constitute
exempt-interest  dividends,  on which you are not subject to federal income tax.
However,  dividends  which are from taxable  interest and any  distributions  of
short-term  capital  gains are taxable to you as ordinary  income.  If the Funds
make any distributions of long-term capital gains, then these are taxable to you
as long-term capital gains, regardless of how long you held your shares.

     If any taxable  income or gains are paid,  in January,  the Funds will mail
you Form 1099-DIV indicating the federal tax status of dividends and any capital
gain distributions paid to you by the Funds during the past year.

     You may realize a capital  gain or loss when you redeem  (sell) or exchange
shares.

     If you sell or  exchange  your  shares  you will have a short or  long-term
capital gain or loss,  depending  on how long you owned the shares.  In January,
your Fund will mail you Form  1099-B  indicating  the  proceeds  from all sales,
including exchanges.  You should keep your annual year-end account statements to
determine the cost (basis) of your shares to report on your tax returns.

Alternative Minimum Tax

     Each Fund may invest in  municipal  obligations,  such as  certain  private
activity bonds,  that earn interest subject to the federal  alternative  minimum
tax  ("AMT").  AMT is a method of  computing  tax that helps ensure that certain
corporations and high-income  individual  taxpayers pay a minimum amount of tax.
Since the Funds are likely to invest in  obligations  that are taxable under the
AMT method of computing  income tax,  taxpayers  who are required to pay AMT may
not receive as high an after-tax  yield as investors who are not subject to AMT.
You should  consult your tax advisor if you have any  questions  regarding  your
status.

State Taxes

     To the extent that  exempt-interest  dividends  are derived  from  earnings
attributable to municipal  obligations of a state, they will also be exempt from
state and local personal income tax in that state.  The dividends may be subject
to  franchise  taxes and  corporate  income  taxes if received by a  corporation
subject to such taxes.  A letter will be mailed to you  shortly  after  year-end
informing  you of the  percentage  of  exempt-interest  dividends  derived  from
earnings on state municipal obligations.

Taxpayer Identification Number

     Federal law  requires  that you provide  your  correct  Social  Security or
Taxpayer Identification Number ("TIN") on a signed certified application or Form
W-9. If not provided, the Funds may be required to withhold 31% of any dividends
or  redemptions,  and you may be subject to a fine.  You will also be prohibited
from  opening  another  account  by  exchange.  If this TIN  information  is not
received within 60 days after your account is  established,  your account may be
redeemed  at the current NAV on the date of  redemption.  The Funds  reserve the
right to reject any new  account or any  purchase  order for failure to supply a
certified TIN.
                                    EXHIBIT A

 
REDUCED SALES CHARGES 

     You may qualify for a reduced sales charge through  several  purchase plans
available.  You must notify the Funds at the time of purchase to take  advantage
of the reduced sales charge.

Right of Accumulation
     The sales charge is  calculated  by taking into account not only the dollar
amount of a new purchase of shares, but also the higher of cost or current value
of shares previously purchased in Calvert Group Funds that impose sales charges.
This automatically applies to your account for each new purchase.

Letter of Intent
     
     If you plan to purchase $50,000 or more of Fund shares over the next 13
months,  your sales charge may be reduced  through a "Letter of Intent." You pay
the lower sales  charge  applicable  to the total amount you plan to invest over
the 13-month  period,  excluding any money market fund  purchases.  Part of your
shares  will  be held  in  escrow,  so  that  if you do not  invest  the  amount
indicated,  you will  have to pay the sales  charge  applicable  to the  smaller
investment actually made. For more information,  see the Statement of Additional
Information. 

Group Purchases
     If you are a member of a qualified  group,  you may purchase  shares of the
Funds at the reduced sales charge  applicable to the group taken as a whole. The
sales charge is  calculated by taking into account not only the dollar amount of
the shares you purchase,  but also the higher of cost or current value of shares
previously purchased and currently held by other members of your group.

     A "qualified  group" is one which (i) has been in  existence  for more than
six months,  (ii) has a purpose other than  acquiring Fund shares at a discount,
and (iii) satisfies  uniform criteria which enable CDI and dealers offering Fund
shares to realize  economies of scale in distributing  such shares.  A qualified
group must have more than 10  members,  must be  available  to arrange for group
meetings  between  representatives  of CDI or  dealers  distributing  the Funds'
shares,  must agree to include sales and other materials related to each Fund in
its  publications  and  mailings  to  members  at  reduced  or no cost to CDI or
dealers.

Other Circumstances
      
     There is no sales charge on shares of any fund of the Calvert  Group of
Funds sold to (i)  Directors,  Trustees,  Officers,  Advisory  Council  Members,
employees of the Calvert  Group of Funds or affiliated  companies,  employees of
broker dealers  distributing  the Fund's shares and family members of the above,
(ii)  Purchases  made  through a  Registered  Investment  Advisor,  (iii)  Trust
departments of banks or savings  institutions  for trust clients of such bank or
institution, (iv) Purchases through a broker maintaining an omnibus account with
the Fund and the  purchases  are made by (a)  investment  advisors or  financial
planners  placing  trades  for  their own  accounts  (or the  accounts  of their
clients)  and who  charge  a  management,  consulting,  or other  fee for  their
services;  or (b) clients of such investment  advisors or financial planners who
place  trades for their own  accounts if such  accounts are linked to the master
account of such investment advisor or financial planner on the books and records
of the broker or agent;  or (c) retirement and deferred  compensation  plans and
trusts,  including,  but not  limited  to,  those  defined in section  401(a) or
section 403(b) of the I.R.C., and "rabbi trusts." 

Dividends and Capital Gain Distributions from other Calvert Group Funds
     You may  prearrange to have your  dividends and capital gain  distributions
from another Calvert Group Fund  automatically  invested in another account with
no additional sales charge.

Purchases made at net asset value ("NAV")
     Except  for money  market  funds,  if you make a purchase  at NAV,  you may
exchange that amount to another fund at no additional sales charge.

Reinstatement Privilege
     If you redeem Fund shares and then within 30 days decide to reinvest in the
same  Fund,  you  may do so at the net  asset  value  next  computed  after  the
reinvestment  order  is  received,  without  a  sales  charge.  You  may use the
reinstatement  privilege  only once.  The Funds  reserve  the right to modify or
eliminate this privilege.

TABLE OF CONTENTS

Fund Expenses
Financial Highlights
Investment Objective and Policies
Yield and Total Return
Management of the Funds
SHAREHOLDER GUIDE:
How to Buy Shares
Net Asset Value
Alternative Sales Options
When Your Account Will Be Credited
Exchanges
Other Calvert Group Services
Selling Your Shares
How to Sell Your Shares
Dividends and Taxes
Exhibit A - Reduced Sales Charges

                           Prospectus
                            
                           April 30, 1997 

                           Calvert Arizona Municipal Intermediate Fund
                           Calvert California Municipal Intermediate Fund
                           Calvert Florida Municipal Intermediate Fund
                           Calvert Maryland Municipal Intermediate Fund
                           Calvert Michigan Municipal Intermediate Fund
                           Calvert National Municipal Intermediate Fund
                           Calvert New York Municipal Intermediate Fund
                           Calvert Pennsylvania Municipal Intermediate Fund
                           Calvert Virginia Municipal Intermediate Fund

To Open an Account:
800-368-2748

Yields and Prices:
Calvert Information Network

24 hours, 7 days a week
     800-368-2745

Service for Existing
Accounts:
     Shareholders         800-368-2745
     Brokers              800-368-2746

TDD for Hearing Impaired:
     800-541-1524

Registered, Certified and
Overnight Mail:
Calvert Group
c/o NFDS, 6th Floor
1004 Baltimore
Kansas City, MO 64105

Branch Office:
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814

Calvert Group Web-Site
Address: http://www.calvertgroup.com

PRINCIPAL UNDERWRITER
Calvert Distributors, Inc.
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814



STATEMENT OF ADDITIONAL INFORMATION

April 30, 1997 

                     CALVERT MUNICIPAL INTERMEDIATE FUNDS:
                          ARIZONA, FLORIDA, MARYLAND,
                 MICHIGAN, NEW YORK, PENNSYLVANIA AND VIRGINIA
                4550 Montgomery Avenue, Bethesda, Maryland 20814

New Account     (800) 368-2748
Information:    (301) 951-4820

Shareholder
Services:       (800) 368-2745

Broker          (800) 368-2746
Services:       (301) 951-4850

TDD for the Hearing-
Impaired:       (800) 541-1524

       
This Statement of Additional  Information is not a prospectus.  Investors should
read the  Statement of Additional  Information  in  conjunction  with the Fund's
Prospectus,  dated  April  30,  1997,  which may be  obtained  free of charge by
writing the Fund at the above  address or calling the telephone  numbers  listed
above. 

                              INVESTMENT OBJECTIVE

         The  Calvert  Municipal  Intermediate  Funds  ("Funds"  or "Fund")  are
designed to provide  individual  and  institutional  investors  with the highest
level of interest  income  exempt from federal and  specific  state income taxes
as is consistent with prudent  investment  management,  preservation of capital,
and the quality and maturity  characteristics  of the Fund. There is, of course,
no  assurance  that the Funds will be  successful  in meeting  their  investment
objectives; there are inherent risks in the ownership of any investment.
         Dividends  paid by the  Funds  will  fluctuate  with  income  earned on
investments.  In addition,  dividends  and  distributions  paid and the value of
each share will vary by class of shares:  the share  values  will  fluctuate  to
reflect  changes in the market  value of  investments.  Each Fund will  attempt,
through   careful   management,   to  reduce   these   risks  and   enhance  the
opportunities for higher income and greater price stability.

                              INVESTMENT POLICIES

         Each  Fund  invests   primarily  in  a   nondiversified   portfolio  of
municipal  obligations,  including  some with  interest  that may be  subject to
alternative  minimum tax. A complete  explanation of municipal  obligations  and
municipal bond and note ratings appears in the Appendix.
         Under  normal  market  conditions,  each Fund will attempt to invest at
least 65% of its total assets in municipal  obligations  with  interest  that is
exempt from federal and specific  state  income tax,  including  those issued by
or on  behalf  of the  state  for  which  the  Fund is  named  and  the  state's
political  subdivisions.  Each Fund will also  attempt to invest  the  remaining
35% of its total  assets in these  obligations,  but may invest it in  municipal
obligations of other states,  territories  and possessions of the United States,
the  District  of  Columbia,   and  their  respective   authorities,   agencies,
instrumentalities  and  political  subdivisions.  Dividends you receive from the
Fund  that  are  derived  from  interest  on  tax-exempt  obligations  of  other
governmental  issuers  will be  exempt  from  federal  income  tax,  but will be
subject to state income taxes.

Variable Rate Demand Notes
         The  Boards  of   Directors/Trustees   have  approved   investments  in
floating and  variable  rate demand notes upon the  following  conditions:  each
Fund has right of demand,  upon notice not to exceed  thirty  days,  against the
issuer to receive  payment;  the issuer will be able to make  payment  upon such
demand,  either  from its own  resources  or through an  unqualified  commitment
from a third party;  and the rate of interest  payable is  calculated  to ensure
that  the  market  value  of  such  notes  will  approximate  par  value  on the
adjustment  dates.  The  remaining  maturity of such demand  notes is deemed the
period  remaining  until  such time as the Fund has the right to  dispose of the
notes at a price which  approximates  par and market  value.  Notes with a right
of demand  exceeding  seven  days are  considered  illiquid  and are  subject to
purchase restrictions.

Municipal Leases
         The Funds may invest in municipal  leases,  or  structured  instruments
where the  underlying  security is a municipal  lease.  A municipal  lease is an
obligation  of a  government  or  governmental  authority,  not subject to voter
approval,  used to  finance  capital  projects  or  equipment  acquisitions  and
payable  through  periodic  rental  payments.  The  Funds may  purchase  unrated
leases.   The  Funds'   Advisor,   under  the   supervision  of  the  Boards  of
Directors/Trustees,  is responsible  for  determining the credit quality of such
leases on an ongoing basis,  including an assessment of the likelihood  that the
lease  will  not  be  canceled.  Certain  municipal  leases  may  be  considered
illiquid  and subject to a Fund's  limit on illiquid  securities.  The Boards of
Directors/Trustees  have  directed  the Advisor to treat a municipal  lease as a
liquid  security if it satisfies the following  conditions:  (A) such  treatment
must be  consistent  with the Fund's  investment  restrictions;  (B) the Advisor
should be able to conclude  that the  obligation  will  maintain  its  liquidity
throughout  the time it is held by the  Fund,  based on the  following  factors:
(1)  whether  the lease  may be  terminated  by the  lessee;  (2) the  potential
recovery,  if any, from a sale of the leased  property upon  termination  of the
lease;   (3)  the   lessee's   general   credit   strength   (e.g.,   its  debt,
administrative,  economic and financial characteristics and prospects);  (4) the
likelihood  that the  lessee  will  discontinue  appropriating  funding  for the
leased  property  because the  property  is no longer  deemed  essential  to its
operations  (e.g.,  the potential for an "event of  nonappropriation"),  and (5)
any  credit   enhancement   or  legal   recourse   provided  upon  an  event  of
nonappropriation  or other  termination  of the lease;  (C) the  Advisor  should
determine  whether the  obligation  can be disposed of within  seven days in the
ordinary  course of business at  approximately  the amount at which the Fund has
valued it for purposes of  calculating  the Fund's net asset value,  taking into
account the following  factors:  (1) the frequency of trades and quotes; (2) the
volatility of quotations  and trade  prices;  (3) the number of dealers  willing
to purchase or sell the  security and the number of  potential  purchasers;  (4)
dealer  undertakings  to make a market in the  security;  (5) the  nature of the
security  and the nature of the  marketplace  trades  (e.g.,  the time needed to
dispose of the security,  the method of soliciting  offers, and the mechanics of
the  transfer);  (6) the rating of the security and the financial  condition and
prospects of the issuer;  and (7) other factors  relevant to the Fund's  ability
to  dispose  of the  security;  and  (D)  the  Advisor  should  have  reasonable
expectations  that the municipal  lease  obligation  will maintain its liquidity
throughout the time the instrument is held by the Fund.

Temporary Investments
         Short-term  money market type  investments  consist of:  obligations of
the  U.S.  Government,  its  agencies  and  instrumentalities;  certificates  of
deposit of banks with assets of one billion  dollars or more;  commercial  paper
or other  corporate  notes of investment  grade  quality;  and any of such items
subject to short-term repurchase agreements.

When-Issued Purchases
         Securities  purchased on a when-issued  basis and the  securities  held
in a Fund's  portfolio  are  subject  to changes  in market  value  based on the
public's  perception  of the  creditworthiness  of the issuer and changes in the
level of interest rates (which will  generally  result in both changing in value
in the same way,  i.e.,  both  experiencing  appreciation  when  interest  rates
decline and depreciation  when interest rates rise).  Therefore,  if in order to
achieve higher interest income,  the Funds remain  substantially  fully invested
at the same  time  that it has  purchased  securities  on a  when-issued  basis,
there will be a greater  possibility  that the market  value of their assets may
vary. No new when-issued  commitments  will be made if more than 50% of a Fund's
net assets would become so committed.
         The  Funds  will  meet  their   obligations  to  pay  for   when-issued
securities  from then-  available cash flow, sale of securities or, although the
Funds  would  not  normally  expect  to do so,  from  sale  of  the  when-issued
securities  themselves  (which may have a market value  greater or less than the
Fund's  payment  obligation).  Sale  of  securities  to  meet  such  obligations
carries with it a greater  potential for the  realization  of capital losses and
capital gains which are not exempt from federal income tax.

Transactions in Futures Contracts
         The Funds may engage in the purchase  and sale of futures  contracts on
an index of municipal bonds or on U.S. Treasury  securities,  or options on such
futures  contracts,  for hedging  purposes  only.  A Fund may sell such  futures
contracts in  anticipation  of a decline in the cost of municipal bonds it holds
or may purchase  such futures  contracts in  anticipation  of an increase in the
value of  municipal  bonds the Fund  intends  to  acquire.  The  Funds  also are
authorized to purchase and sell other financial  futures  contracts which in the
opinion of the Investment  Advisor provide an appropriate  hedge for some or all
of the Funds' securities.
         Because  of low  initial  margin  deposits  made upon the  opening of a
futures  position,  futures  transactions  involve  substantial  leverage.  As a
result,  relatively  small  movements  in the price of the futures  contract can
result in  substantial  unrealized  gains or  losses.  Because  the  Funds  will
engage in the  purchase  and sale of  financial  futures  contracts  solely  for
hedging purposes,  however,  any losses incurred in connection therewith should,
if the  hedging  strategy  is  successful,  be  offset  in  whole  or in part by
increases  in the value of  securities  held by a Fund or decreases in the price
of securities the Fund intends to acquire.
         Municipal  bond  index  futures  contracts  commenced  trading  in June
1985,  and it is possible  that trading in such futures  contracts  will be less
liquid than that in other futures  contracts.  The trading of futures  contracts
and options  thereon is subject to certain market risks,  such as trading halts,
suspensions,   exchange  or  clearing  house  equipment   failures,   government
intervention  or other  disruptions of normal trading  activity,  which could at
times make it difficult or impossible to liquidate existing positions.
         The  liquidity  of a  secondary  market  in  futures  contracts  may be
further adversely  affected by "daily price fluctuation  limits"  established by
contract  markets,  which  limit  the  amount of  fluctuation  in the price of a
futures  contract or option  thereon during a single trading day. Once the daily
limit has been  reached in the  contract,  no trades  may be  entered  into at a
price beyond the limit,  thus  preventing  the  liquidation  of open  positions.
Prices  of  existing  contracts  have in the past  moved  the  daily  limit on a
number of  consecutive  trading days. A Fund will enter into a futures  position
only if, in the  judgment  of the  Investment  Advisor,  there  appears to be an
actively traded secondary market for such futures contracts.
         The successful  use of  transactions  in futures  contracts and options
thereon depends on the ability of the Investment  Advisor to correctly  forecast
the direction  and extent of price  movements of these  instruments,  as well as
price  movements of the securities  held by a Fund within a given time frame. To
the extent these prices  remain  stable  during the period in which a futures or
option  contract  is held by a Fund,  or move in a  direction  opposite  to that
anticipated,  a Fund may realize a loss on the hedging  transaction which is not
fully  or  partially   offset  by  an  increase  in  the  value  of  the  Fund's
securities.  As a result,  the Fund's  total  return for such period may be less
than if it had not engaged in the hedging transaction.

Description of Financial Futures Contracts
         Futures  Contracts.  A  futures  contract  obligates  the  seller  of a
contract to deliver  and the  purchaser  of a contract  to take  delivery of the
type of financial  instrument  called for in the contract or, in some instances,
to make a cash  settlement,  at a specified  future time for a specified  price.
Although  the terms of a contract  call for actual  delivery  or  acceptance  of
securities,  or for a cash  settlement,  in most cases the  contracts are closed
out before the delivery  date without the delivery or  acceptance  taking place.
The Funds intend to close out any futures  contracts  prior to the delivery date
of such contracts.
         A Fund may sell futures  contracts in  anticipation of a decline in the
value of its investments in municipal  bonds.  The loss associated with any such
decline  could be  reduced  without  employing  futures  as a hedge  by  selling
long-term  securities  and either  reinvesting  the proceeds in securities  with
shorter  maturities  or by  holding  assets  in cash.  This  strategy,  however,
entails  increased  transaction  costs in the form of brokerage  commissions and
dealer spreads and will  typically  reduce the Fund's average yields as a result
of the shortening of maturities.
         The  purchase or sale of a futures  contract  differs from the purchase
or sale  of a  security,  in  that no  price  or  premium  is paid or  received.
Instead,  an amount  of cash or  securities  acceptable  to the  Fund's  futures
commission  merchant  and the  relevant  contract  market,  which  varies but is
generally  about 5% or less of the contract  amount,  must be deposited with the
broker.  This  amount  is known as  "initial  margin,"  and  represents  a "good
faith"  deposit  assuring the  performance  of both the purchaser and the seller
under the futures contract.  Subsequent  payments to and from the broker,  known
as  "variation  margin,"  are  required to be made on a daily basis as the price
of the futures  contract  fluctuates,  making the long or short positions in the
futures  contract  more or less  valuable,  a process  known as  "marking to the
market."  Prior to the  settlement  date of the futures  contract,  the position
may be  closed  out by  taking  an  opposite  position  which  will  operate  to
terminate  the  position  in the  futures  contract.  A final  determination  of
variation  margin is then made,  additional  cash is  required  to be paid to or
released  by the  broker,  and  the  purchaser  realizes  a  loss  or  gain.  In
addition, a commission is paid on each completed purchase and sale transaction.
         The sale of financial futures  contracts  provides an alternative means
of  hedging  a  Fund  against  declines  in the  value  of  its  investments  in
municipal  bonds.  As such values  decline,  the value of the Fund's position in
the futures  contracts will tend to increase,  thus  offsetting all or a portion
of the  depreciation in the market value of the Fund's fixed income  investments
which  are  being  hedged.  While  a Fund  will  incur  commission  expenses  in
establishing  and  closing  out  futures   positions,   commissions  on  futures
transactions may be significantly  lower than transaction  costs incurred in the
purchase and sale of fixed  income  securities.  In  addition,  the ability of a
Fund to trade in the  standardized  contracts  available  in the futures  market
may  offer a more  effective  hedging  strategy  than a program  to  reduce  the
average  maturing of portfolio  securities,  due to the unique and varied credit
and technical  characteristics  of the municipal debt  instruments  available to
the  Fund.  Employing  futures  as a hedge  may also  permit a Fund to  assume a
hedging  posture  without  reducing  the yield on its  investments,  beyond  any
amounts required to engage in futures trading.
         The Funds may engage in the purchase  and sale of futures  contracts on
an index of municipal  securities.  These  instruments  provide for the purchase
or sale of a  hypothetical  portfolio of  municipal  bonds at a fixed price in a
stated  delivery  month.  Unlike  most  other  futures  contracts,   however,  a
municipal  bond index  futures  contract  does not  require  actual  delivery of
securities but results in a cash  settlement  based upon the difference in value
of the index  between the time the  contract was entered into and the time it is
liquidated.
         The municipal  bond index  underlying the futures  contracts  traded by
the  Portfolio  is The Bond Buyer  Municipal  Bond Index,  developed by The Bond
Buyer and the Chicago Board of Trade ("CBT"),  the contract  market on which the
futures  contracts are traded. As currently  structured,  the index is comprised
of 40 tax-exempt  term  municipal  revenue and general  obligation  bonds.  Each
bond  included  in the index  must be rated  either A- or higher by  Standard  &
Poor's or A or higher by Moody's  Investors  Service  and must have a  remaining
maturity  of 19  years  or  more.  Twice  a  month  new  issues  satisfying  the
eligibility  requirements  are added to, and an equal  number of old issues will
be deleted from, the index.  The value of the index is computed daily  according
to a formula  based upon the price of each bond in the index,  as  evaluated  by
four dealer-to-dealers brokers.
         The  Funds  may  also  purchase  and  sell  futures  contracts  on U.S.
Treasury  bills,  notes and bonds for the same types of hedging  purposes.  Such
futures  contracts  provide  for  delivery  of  the  underlying  security  at  a
specified  future time for a fixed price,  and the value of the futures contract
therefore generally fluctuates with movements in interest rates.
         The municipal bond index futures  contract,  futures  contracts on U.S.
Treasury  securities  and options on such  futures  contracts  are traded on the
CBT,  which,  like  other  contract  markets,  assures  the  performance  of the
parties to each futures  contract  through a clearing  corporation,  a nonprofit
organization managed by the exchange  membership,  which is also responsible for
handling daily accounting of deposits or withdrawals of margin.
         The  Funds  may also  purchase  financial  futures  contracts  when not
fully invested in municipal  bonds,  in  anticipation of an increase in the cost
of securities a Fund intends to purchase.  As such securities are purchased,  an
equivalent  amount of futures  contracts  will be closed out.  In a  substantial
majority  of these  transactions,  a Fund will  purchase  municipal  bonds  upon
termination  of the futures  contracts.  Due to changing  market  conditions and
interest rate forecasts,  however,  a futures position may be terminated without
a corresponding purchase of securities.  Nevertheless,  all purchases of futures
contracts by a Fund will be subject to certain restrictions, described below.
         Options  on  Futures  Contracts.   An  option  on  a  futures  contract
provides the purchaser with the right,  but not the obligation,  to enter into a
long  position  in the  underlying  futures  contract  (that  is,  purchase  the
futures  contract),  in the case of a "call"  option,  or a short position (sell
the futures  contract),  in the case of a "put" option,  for a fixed price up to
a stated  expiration  date.  The option is purchased for a  non-refundable  fee,
known as the  "premium."  Upon  exercise  of the  option,  the  contract  market
clearing  house  assigns  each party to the option an  opposite  position in the
underlying futures contract.  In the event of exercise,  therefore,  the parties
are subject to all of the risks of futures  trading,  such as payment of initial
and variation  margin.  In addition,  the seller,  or "writer," of the option is
subject  to margin  requirements  on the  option  position.  Options  on futures
contracts  are traded on the same  contract  markets as the  underlying  futures
contracts.
         The  Funds may  purchase  options  on  futures  contracts  for the same
types  of  hedging   purposes   described   above  in  connection  with  futures
contracts.  For example,  in order to protect against an anticipated  decline in
the value of securities it holds,  a Fund could  purchase put options on futures
contracts,  instead of selling the underlying futures contracts.  Conversely, in
order to protect  against the adverse  effects of  anticipated  increases in the
costs of  securities  to be  acquired,  a Fund could  purchase  call  options on
futures contracts,  instead of purchasing the underlying futures contracts.  The
Funds  generally  will sell  options on futures  contracts  only to close out an
existing position.
         The Funds will not engage in  transactions in such  instruments  unless
and until the  Investment  Advisor  determines  that market  conditions  and the
circumstances  of the Fund  warrant such  trading.  To the extent a Fund engages
in the purchase and sale of futures  contracts  or options  thereon,  it will do
so only at a level which is reflective of the  Investment  Advisor's view of the
hedging needs of a Fund,  the liquidity of the market for futures  contracts and
the  anticipated  correlation  between  movements in the value of the futures or
option contract and the value of securities held by the Portfolio.
         Restrictions  on the Use of Futures  Contracts  and  Options on Futures
Contracts.  Under  regulations  of  the  Commodity  Futures  Trading  Commission
("CFTC"),  the futures trading activities  described herein will not result in a
Fund being deemed to be a "commodity  pool," as defined under such  regulations,
provided that certain trading  restrictions are adhered to. In particular,  CFTC
regulations  require  that all futures and option  positions  entered  into by a
Fund  qualify  as  bona  fide  hedge   transactions,   as  defined   under  CFTC
regulations,  or,  in the  case  of  long  positions,  that  the  value  of such
positions  not exceed an amount of segregated  funds  determined by reference to
certain cash and securities  positions  maintained by a Fund and accrued profits
on such  positions.  In  addition,  a Fund  may not  purchase  or sell  any such
instruments  if,  immediately  thereafter,  the  sum of the  amount  of  initial
margin  deposits on the Fund's  existing  futures  positions  would exceed 5% of
the market value of its net assets.
         When a Fund  purchases a futures  contract,  it will maintain an amount
of cash,  cash  equivalents  (for  example,  commercial  paper and daily  tender
adjustable  notes)  or  short-term  high-grade  fixed  income  securities  in  a
segregated  account with the Fund's custodian,  so that the amount so segregated
plus the amount of  initial  and  variation  margin  held in the  account of its
broker equals the market value of the futures  contract,  thereby  ensuring that
the use of such futures is unleveraged.
         Risk  Factors in  Transactions  in Futures  Contracts.  The  particular
municipal  bonds  comprising  the index  underlying  the  municipal  bond  index
futures  contract  may vary  from the bonds  held by a Fund.  In  addition,  the
securities  underlying  futures contracts on U.S.  Treasury  securities will not
be the same as  securities  held by the  Fund.  As a  result,  a Fund's  ability
effectively  to hedge  all or a  portion  of the  value of its  municipal  bonds
through  the use of  futures  contracts  will  depend  in part on the  degree to
which price  movements in the index  underlying the municipal bond index futures
contract,  or the U.S.  Treasury  securities  underlying other futures contracts
trade, correlate with price movements of the municipal bonds held by the Fund.
         For example,  where prices of  securities  in a Fund do not move in the
same  direction or to the same extent as the values of the  securities  or index
underlying a futures  contract,  the trading of such futures  contracts  may not
effectively hedge the Fund's  investments and may result in trading losses.  The
correlation  may be affected by  disparities in the average  maturity,  ratings,
geographical  mix or  structure of the Fund's  investments  as compared to those
comprising the index,  and general economic or political  factors.  In addition,
the  correlation  between  movements  in the  value of the  index  underlying  a
futures  contract  may be  subject  to change  over time,  as  additions  to and
deletions from the index alter its structure.  In the case of futures  contracts
on U.S.  Treasury  securities and options thereon,  the anticipated  correlation
of price movements between the U.S. Treasury  securities  underlying the futures
or  options  and  municipal  bonds  may  be  adversely   affected  by  economic,
political,  legislative or other  developments  that have a disparate  impact on
the  respective  markets for such  securities.  In the event that the Investment
Advisor  determines to enter into  transactions in financial  futures  contracts
other  than the  municipal  bond  index  futures  contract  or  futures  on U.S.
Treasury  securities,  the risk of imperfect  correlation  between  movements in
the prices of such futures  contracts and the prices of municipal  bonds held by
a Fund may be greater.
         The trading of futures  contracts  on an index also entails the risk of
imperfect  correlation  between  movements in the price of the futures  contract
and the value of the  underlying  index.  The  anticipated  spread  between  the
prices may be distorted due to  differences  in the nature of the markets,  such
as margin  requirements,  liquidity and the  participation of speculators in the
futures  markets.  The  risk  of  imperfect  correlation,   however,   generally
diminishes as the delivery month specified in the futures contract approaches.
         Prior to exercise or  expiration,  a position in futures  contracts  or
options  thereon may be terminated  only by entering into a closing  purchase or
sale  transaction.  This  requires a secondary  market on the relevant  contract
market.  The Funds will enter  into a futures or option  position  only if there
appears  to be a liquid  secondary  market  therefor,  although  there can be no
assurance  that such a liquid  secondary  market  will exist for any  particular
contract  at any  specific  time.  Thus,  it may not be  possible to close out a
position once it has been established.  Under such  circumstances,  a Fund could
be required to make  continuing  daily cash payments of variation  margin in the
event  of  adverse  price   movements.   In  such  situation,   if  a  Fund  has
insufficient  cash,  it may be required  to sell  portfolio  securities  to meet
daily variation  margin  requirements  at a time when it may be  disadvantageous
to do so. In  addition,  a Fund may be  required  to perform  under the terms of
the futures or option  contracts  it holds.  The  inability to close out futures
or options  positions  also could have an adverse  impact on the Fund's  ability
effectively to hedge its portfolio.
         When a Fund  purchases  an option on a  futures  contract,  its risk is
limited to the amount of the premium,  plus related transaction costs,  although
this  entire  amount  may be lost.  In  addition,  in order to  profit  from the
purchase  of an  option  on a  futures  contract,  the Fund may be  required  to
exercise the option and liquidate the underlying  futures  contract,  subject to
the  availability  of a liquid  secondary  market.  The  trading  of  options on
futures  contracts  also  entails  the risk  that  changes  in the  value of the
underlying  futures  contract  will not be fully  reflected  in the value of the
option,  although the risk of imperfect  correlation generally tends to diminish
as the maturity date of the futures  contract or  expiration  date of the option
approaches.
         "Trading  Limits"  or  "Position  Limits"  may also be  imposed  on the
maximum  number  of  contracts  which any  person  may hold at a given  time.  A
contract  market  may  order  the  liquidation  of  positions  found  to  be  in
violation  of these limits and it may impose  other  sanctions or  restrictions.
The  Investment  Advisor  does not  believe  that  trading  limits will have any
adverse impact on the strategies for hedging the Portfolio's investments.
         Further,  the  trading of futures  contracts  is subject to the risk of
the  insolvency of a brokerage  firm or clearing  corporation,  which could make
it  difficult  or  impossible  to  liquidate  existing  positions  or to recover
excess variation margin payments.
         In  addition  to the  risks  of  imperfect  correlation  and  lack of a
liquid   secondary  market  for  such   instruments,   transactions  in  futures
contracts  involve risks  related to leveraging  and the potential for incorrect
forecasts  of the  direction  and extent of  interest  rate  movements  within a
given time frame.

Noninvestment-Grade Debt Securities
         The  Funds may  invest  in lower  quality  debt  securities  (generally
those  rated  BB or lower by S&P or Ba or  lower  by  Moody's),  subject  to the
Funds'  investment  policy which provides that they may not invest more than 35%
of their assets in securities  rated below BBB by either rating  service,  or in
unrated  securities  determined  by the Advisor to be  comparable  to securities
rated below BBB by either  rating  service.  These  securities  have moderate to
poor  protection  of  principal  and  interest  payments  and  have  speculative
characteristics.  These  securities  involve  greater  risk of  default or price
declines due to changes in the issuer's  creditworthiness  than investment-grade
debt  securities.  Because the market for lower-rated  securities may be thinner
and less  active than for  higher-rated  securities,  there may be market  price
volatility  for these  securities  and limited  liquidity in the resale  market.
Market  prices for these  securities  may  decline  significantly  in periods of
general  economic  difficulty or rising interest rates.  Unrated debt securities
may fall into the lower quality  category.  Unrated  securities  usually are not
attractive to as many buyers as are rated  securities,  which may make them less
marketable.
         The  quality   limitation  set  forth  in  the  investment   policy  is
determined  immediately after a Fund's  acquisition of a security.  Accordingly,
any later change in ratings will not be considered when  determining  whether an
investment complies with the Fund's investment policy.
         When  purchasing  high-yielding  securities,   rated  or  unrated,  the
Advisors  prepare  their own  careful  credit  analysis  to attempt to  identify
those issuers whose financial  condition is adequate to meet future  obligations
or is expected to be adequate in the future.  Through portfolio  diversification
and credit  analysis,  investment risk can be reduced,  although there can be no
assurance that losses will not occur.

                            INVESTMENT RESTRICTIONS

Fundamental Investment Restrictions
         The following  investment  restrictions  and  fundamental  policies may
not be changed  without  the  consent of the  holders of a majority  of a Fund's
outstanding  shares.  Shares have equal  rights as to voting.  A majority of the
shares  means the  lesser of (i) 67% of the shares  represented  at a meeting at
which  more than 50% of the  outstanding  shares  are  represented  or (ii) more
than 50% of the outstanding shares. The Funds may not:
         (1)  Purchase  common  stocks,  preferred  stocks,  warrants,  or other
         equity securities;
         (2) Issue senior  securities,  borrow money,  or pledge,  mortgage,  or
         hypothecate   its  assets,   except  as  may  be  necessary  to  secure
         borrowings  from banks for  temporary  or  emergency  (not  leveraging)
         purposes  and then in an amount  not  greater  than 10% of the value of
         the  Fund's  total  assets  at the  time of the  borrowing.  Investment
         securities will not be purchased while any borrowings are outstanding;
         (3) Sell  securities  short,  purchase  securities on margin,  or write
         put  or  call   options,   except  to  the   extent   permitted   under
         "Transactions  in Futures  Contracts" or elsewhere in the Prospectus or
         SAI.  The Funds  reserve  the right to  purchase  securities  with puts
         attached. See "Obligations with Puts Attached";
         (4) Underwrite  the  securities of other issuers,  except to the extent
         that the  purchase of  municipal  obligations  in  accordance  with the
         Fund's  investment  objective  and policies,  either  directly from the
         issuer,  or  from  an  underwriter  for an  issuer,  may be  deemed  an
         underwriting;
         (5)  Make  loans to  others,  except  in  accordance  with  the  Fund's
         investment  objective  and policies or pursuant to contracts  providing
         for the compensation of service providers by compensating balances;
         (6)  Purchase  or  sell  real  estate,  real  estate  investment  trust
         securities,  commodities,  or  commodity  contracts,  or  oil  and  gas
         interests,  but  this  shall  not  prevent  a Fund  from  investing  in
         municipal obligations secured by real estate or interests therein;
         (7)  Invest  25% or more of its  assets  in the  securities  of any one
         issuer.  Each  Funds  may  invest  more  than  25%  of  its  assets  in
         obligations issued or guaranteed by the U.S.  Government,  its agencies
         or  instrumentalities  but  will  invest  in  more  than  20%  of  such
         obligations  only during  abnormal market  conditions.  For purposes of
         this limitation,  the entity which has the ultimate  responsibility for
         the payment of principal  and interest on a  particular  security  will
         be treated as its issuer;
         (8)  Invest  25% or more of its assets in any  particular  industry  or
         industries.  Each  Fund  may  invest  more  than 25% of its  assets  in
         obligations issued or guaranteed by the U.S.  Government,  its agencies
         or  instrumentalities  but  will  invest  in  more  than  20%  of  such
         obligations   only  during  abnormal  market   conditions.   Industrial
         development  bonds,  where the payment of principal and interest is the
         responsibility  of  companies  within the same  industry,  are  grouped
         together as an "industry."

Nonfundamental Investment Restrictions
         Each Fund has adopted the following  operating  (i.e.,  nonfundamental)
investment  policies  and  restrictions  which  may be  changed  by the Board of
Directors/Trustees without shareholder approval. The Funds may not:
         (1) Purchase  illiquid  securities if more than 15% of the value of its
         net assets would be invested in such securities;
         (2)  Invest  more  than  5%  of  the  value  of  its  total  assets  in
         securities   where  the  payment  of  principal  and  interest  is  the
         responsibility  of a company or  companies  with less than three years'
         operating history.
         (3) Purchase or retain  securities  of an issuer if those  directors of
         the Fund,  each of whom  owns  more  than 1/2 of 1% of the  outstanding
         securities  of  such  issuer,   together  own  more  than  5%  of  such
         outstanding securities;
         (4) Invest in  companies  for the  purpose of  exercising  control;  or
         invest  in  securities  of  other  investment   companies,   except  as
         permitted  under the  Investment  Company Act or in  connection  with a
         director's/trustee's  deferred  compensation  plan, as long as there is
         no duplication of advisory fees.

                      PURCHASES AND REDEMPTIONS OF SHARES

         Share  certificates  will  be  issued  at no  charge  if  requested  in
writing by the investor.  No certificates will be issued for fractional  shares.
Purchases  by bank wire  received  by 4:00 p.m.,  Eastern  time are  immediately
available  federal  funds.  Your  purchases  must be made  in U.S.  dollars  and
checks must be drawn on U.S. banks.
         Amounts  redeemed  by check  redemption  may be mailed to the  investor
without  charge.  Amounts  of  more  than  $50 and  less  than  $300,000  may be
transferred  electronically  at no charge to the investor.  Amounts of $1,000 or
more will be transmitted by wire,  without charge by Calvert,  to the investor's
account at a domestic  commercial  bank that is a member of the Federal  Reserve
System or to a  correspondent  bank. A charge of $5 is imposed on wire transfers
of less than $1,000.  If the  investor's  bank is not a Federal  Reserve  System
member,  failure of  immediate  notification  to that bank by the  correspondent
bank  could  result in a delay in  crediting  the funds to the  investor's  bank
account.
         Telephone  redemption  requests  that would  require the  redemption of
shares  purchased by check or electronic  funds transfer  within the previous 10
business  days may not be  honored.  The Funds  reserve  the right to modify the
telephone redemption privilege.
         To  change  redemption  instructions  already  given,  you must  send a
written  notice  addressed  to  Calvert  Group,   c/o  NFDS,  6th  Floor,   1004
Baltimore,  Kansas  City,  MO 64105,  with a voided copy of a check for the bank
wiring  instructions  to be added.  If a voided  check  does not  accompany  the
request,  then the request must be signature  guaranteed  by a commercial  bank,
savings  and  loan  association,  trust  company,  member  firm of any  national
securities exchange, or certain credit unions.  Additional  documentation may be
required from corporations, fiduciaries, and institutional investors.
         The  right  of  redemption  may be  suspended  or the  date of  payment
postponed  for any period  during  which the New York Stock  Exchange  is closed
(other than  customary  weekend and holiday  closings),  when trading on the New
York Stock  Exchange is  restricted,  or an emergency  exists,  as determined by
the SEC, or if the  Commission  has ordered such a suspension for the protection
of  shareholders.  Redemption  proceeds  are  normally  mailed or wired the next
business  day  after a  proper  redemption  request  has been  received,  unless
redemptions have been suspended or postponed as described above.
         Redemption  proceeds are  normally  paid in cash.  However,  a Fund has
the right to redeem  shares in assets  other  than cash for  redemption  amounts
exceeding,  in any 90-day  period,  $250,000 or 1% of the net asset value of the
Fund, whichever is less.


Reduced Sales Charges 
        
Each Fund imposes  reduced sales  charges for Fund shares in certain  situations
in  which  the   Principal   Underwriter   (which   offers  the  Fund's   shares
continuously  and on a "best  efforts"  basis)  and  the  dealers  selling  Fund
shares may  expect to realize  significant  economies  of scale with  respect to
such sales.  Generally,  sales costs do not increase in proportion to the dollar
amount of the shares  sold;  the  per-dollar  transaction  cost for a sale to an
investor of shares  worth,  for example,  $5,000 is  generally  much higher than
the  per-dollar  cost  for  a  sale  of  shares  worth  $1,000,000.   Thus,  the
applicable  sales  charge  declines  as a  percentage  of the  dollar  amount of
shares sold as the dollar amount increases.
         When a  shareholder  agrees to make  purchases  of shares over a period
of time  totaling a certain  dollar amount  pursuant to a Letter of Intent,  the
Underwriter  and selling  dealers can expect to realize the  economies  of scale
applicable to that stated goal amount.  Thus,  the Fund imposes the sales charge
applicable to the goal amount.  Similarly,  the  Underwriter and selling dealers
also experience cost savings when dealing with existing  shareholders,  enabling
the  Fund to  afford  existing  shareholders  the  Right  of  Accumulation.  The
Underwriter  and selling  dealers can also expect to realize  economies of scale
when making  sales to the  members of certain  qualified  groups  which agree to
facilitate  distribution  of Fund's  shares to their  members.  See "Exhibit A -
Reduced Sales Charges" in the Prospectus.

                          DIVIDENDS AND DISTRIBUTIONS

        
Each  Fund   declares  and  pays   monthly   dividends  of  its  net  income  to
shareholders  of record as of the close of business on each  designated  monthly
record date. Net  investment  income  consists of the interest  income earned on
investments  (adjusted for  amortization of original issue discounts or premiums
or market  premiums),  less  estimated  expenses.  Capital  gains,  if any,  are
normally  paid  once a year and will be  automatically  reinvested  at net asset
value in additional  shares.  Dividends and any  distributions are automatically
reinvested  in  additional  shares  of the  Fund,  unless  you elect to have the
dividends  of  $10  or  more  paid  in  cash  (by  check  or  by  Calvert  Money
Controller).  You may also  request  to have your  dividends  and  distributions
from  the  Fund  invested  in  shares  of any  other  Calvert  Group  Fund at no
additional  charge. If you elect to have dividends and/or  distributions paid in
cash, and the U.S.  Postal  Service  cannot deliver the check,  or if it remains
uncashed  for six months,  it, as well as future  dividends  and  distributions,
will be reinvested in additional shares. 

                                  TAX MATTERS

         Each Fund  intends  to  qualify  as a  "regulated  investment  company"
under  Subchapter  M  of  the  Internal   Revenue  Code  (the  "Code").   By  so
qualifying,  the Fund will not be  subject  to federal  income  tax,  nor to the
federal  excise tax  imposed by the Tax Reform Act of 1986 (the  "Act"),  to the
extent  that it  distributes  its net  investment  income and  realized  capital
gains.
         The   Funds'   dividends   of   net   investment    income   constitute
exempt-interest  dividends on which  shareholders  are not generally  subject to
federal income tax;  however under the Act,  dividends  attributable to interest
on certain  private  activity  bonds  must be  included  in federal  alternative
minimum  taxable  income for the purpose of  determining  liability (if any) for
individuals and for  corporations.  Further,  for  corporations,  all tax-exempt
income must be taken into account in  calculating  "adjusted  current  earnings"
for purposes of the federal  alternative  minimum tax.  Fund  dividends  derived
from  taxable  interest  and  distributions  of net  short-term  capital  gains,
whether  taken in cash or  reinvested  in  additional  shares,  are  taxable  to
shareholders  as ordinary  income and do not qualify for the dividends  received
deduction for  corporations.  If you held shares for six months or less,  losses
must be offset by the amount of  exempt-interest  dividends you  received,  and,
to the extent of capital gain  distributions  you received,  the loss amount not
offset  (disallowed)  must be treated as long-term  capital  loss. A shareholder
may  also  be  subject  to  some  state  and  local  taxes  on   dividends   and
distributions  from the  Funds.  The Funds  will  notify  shareholders  annually
about the tax status of  dividends  and  distributions  paid by the Fund and the
amount of dividends withheld, if any, during the previous year.
         The Code provides that interest on  indebtedness  incurred or continued
in order to purchase or carry  shares of a regulated  investment  company  which
distributes  exempt-interest  dividends  during  the  year  is  not  deductible.
Entities  or  persons  who  are  "substantial  users"  (or  persons  related  to
"substantial  users") of facilities  financed by private  activity  bonds should
consult their tax advisors before  purchasing  shares of the Fund.  "Substantial
user" is generally  defined as  including a  "non-exempt  person" who  regularly
uses in trade or  business a part of a facility  financed  from the  proceeds of
private activity bonds.
         Investors should note that the Revenue  Reconciliation  Act of 1989 may
require  investors  to exclude the initial  sales  charge,  if any,  paid on the
purchase  of Fund  shares  from the tax basis of those  shares if the shares are
exchanged  for shares of another  Calvert Group Fund within 90 days of purchase.
This  requirement  applies  only to the extent that the payment of the  original
sales  charge on the shares of the Fund causes a reduction  in the sales  charge
otherwise  payable  on the shares of the  Calvert  Group  Fund  acquired  in the
exchange,  and investors may treat sales charges  excluded from the basis of the
original sales as incurred to acquire the new shares.
         The Funds may be  required  to withhold  31% of any  long-term  capital
gain dividends and 31% of each  redemption  transaction  occurring in a Fund if:
(a) the  shareholder's  social security number or other taxpayer  identification
number  ("TIN") is not provided or an obviously  incorrect TIN is provided;  (b)
the  shareholder  does not  certify  under  penalties  of  perjury  that the TIN
provided  is the  shareholder's  correct  TIN and  that the  shareholder  is not
subject to backup  withholding  under section  3406(a)(1)(C) of the Code because
of  underreporting  (however,   failure  to  provide  certification  as  to  the
application of section  3406(a)(1)(C)  will result only in backup withholding on
capital gain dividends,  not on  redemptions);  or (c) a Fund is notified by the
Internal  Revenue  Service that the TIN provided by the shareholder is incorrect
or  that  there  has  been  underreporting  of  interest  or  dividends  by  the
shareholder.  Affected  shareholders  will receive  statements at least annually
specifying the amount withheld.
         In addition,  each Fund is required to report to the  Internal  Revenue
Service the following  information  with respect to redemption  transactions  in
the Fund:  (a) the  shareholder's  name,  address,  account  number and taxpayer
identification  number;  (b) the total dollar value of the redemptions;  and (c)
the Fund's identifying CUSIP number.
         Certain  shareholders are, however,  exempt from the backup withholding
and broker reporting  requirements.  Exempt shareholders include:  corporations;
financial institutions;  tax-exempt organizations;  individual retirement plans;
the U.S.,  a State,  the  District of  Columbia,  a U.S.  possession,  a foreign
government,  an  international  organization,   or  any  political  subdivision,
agency,  or   instrumentality   of  any  of  the  foregoing;   U.S.   registered
commodities or securities  dealers;  real estate investment  trusts;  registered
investment  companies;  bank common trust funds;  certain charitable trusts; and
foreign  central  banks of issue.  Non-resident  aliens also are  generally  not
subject to either  requirement but, along with certain foreign  partnerships and
foreign  corporations,  may instead be subject to withholding under section 1441
of the  Code.  Shareholders  claiming  exemption  from  backup  withholding  and
broker reporting should call or write the Funds for further information.

                              VALUATION OF SHARES

         Fund  assets  are  valued  utilizing  the  average  bid  dealer  market
quotation as furnished by an independent  pricing service.  Securities and other
assets for which market  quotations  are not readily  available are valued based
on the current  market for similar  securities or assets,  as determined in good
faith  by  the  Fund's   Advisor   under  the   supervision   of  the  Board  of
Directors/Trustees.
        
Each Fund  determines  the net asset value for its shares every  business day at
the close of the  regular  session  of the New York Stock  Exchange  (generally,
4:00  p.m.  Eastern  time),  and at such  other  times  as may be  necessary  or
appropriate.  They  do  not  determine  net  asset  value  on  certain  national
holidays  or other day on which  the New York  Stock  Exchange  is  closed:  New
Year's Day,  Presidents'  Day,  Good Friday,  Memorial  Day,  Independence  Day,
Labor Day, Thanksgiving Day and Christmas Day. 
         Valuations,  market quotations and market  equivalents are provided the
Funds by Kenny S&P Evaluation  Services,  a subsidiary of  McGraw-Hill.  The use
of Kenny as a pricing  service by the Funds has been  approved  by the Boards of
Directors/Trustees.   Valuations   provided  by  Kenny  are  determined  without
exclusive  reliance  on quoted  prices and take into  consideration  appropriate
factors  such as  institution-size  trading  in  similar  groups of  securities,
yield, quality, coupon rate, maturity,  type of issue, trading  characteristics,
and other market data.

Net Asset Value and Offering Price Per Share

<TABLE>
<CAPTION>

Arizona
         <S>                                <C>

         Net asset value per share
         ($2,634,802/523,621 shares)        $5.03
         Maximum sales charge
         (2.75% of offering price)           0.14
         Offering price per share           $5.17

Florida
         Net asset value per share
         ($5,516,388/1,098,333 shares)      $5.02
         Maximum sales charge
         (2.75% of offering price)           0.14
         Offering price per share           $5.16

Maryland
         Net asset value per share
         ($12,023,007/2,388,381 shares)     $5.03
         Maximum sales charge
         (2.75% of offering price)           0.14
         Offering price per share           $5.17

Michigan
         Net asset value per share
         ($5,803,799/1,137,278 shares)      $5.10
         Maximum sales charge
         (2.75% of offering price)           0.14
         Offering price per share           $5.24

New York
         Net asset value per share
         ($6,217,955/1,221,688 shares)      $5.09
         Maximum sales charge
         (2.75% of offering price)           0.14
         Offering price per share           $5.23

Pennsylvania
         Net asset value per share
         ($4,486,116/883,146 shares)        $5.08
         Maximum sales charge
         (2.75% of offering price)           0.14
         Offering price per share           $5.22

Virginia
         Net asset value per share
         ($12,617,575/2,475,015 shares)     $5.10
         Maximum sales charge
         (2.75% of offering price)           0.14
         Offering price per share           $5.24
</TABLE>


                     CALCULATION OF YIELD AND TOTAL RETURN

       
Each  Fund  may  advertise  its  "total  return."  Total  return  is  calculated
separately  for each  series.  Total return is  historical  in nature and is not
intended to indicate  future  performance.  Total  return will be quoted for the
most recent  one-year  period,  five-year  period,  and period from inception of
the Fund's  offering of shares.  Return  quotations for periods in excess of one
year  represent the average  annual total return for the period  included in the
particular  quotation.  Total  return  is a  computation  of a  Fund's  dividend
yield,   plus  or  minus  realized  or  unrealized   capital   appreciation   or
depreciation,  less fees and  expenses.  Total  return  quotations  reflect  the
deduction of the Fund's  maximum  sales  charge  ("return  with maximum  load"),
except  quotations  of "return  without  maximum  load"  which do not deduct the
sales  charge.  Note:  "Total  Return"  as  quoted in the  Financial  Highlights
section  of  the  Funds'  Annual  Report  to  Shareholders,   however,  per  SEC
instructions,  does not reflect  deduction of the sales charge,  and corresponds
to "return without  maximum load" as referred to herein.  Return without maximum
load should be considered  only by investors,  such as  participants  in certain
pension  plans,  to whom the sales  charge  does not apply,  or for  purposes of
comparison  only  with  comparable  figures  which  also  do not  reflect  sales
charges,  such as Lipper  averages.  Total  return is computed  according to the
following formula: 

                                P(1 + T)n = ERV

where P = a  hypothetical  initial  payment of  $1,000;  T = total  return;  n =
number  of  years;  and ERV = the  ending  redeemable  value  of a  hypothetical
$1,000  payment made at the  beginning of the 1, 5 or 10 year periods at the end
of such periods (or portions thereof, if applicable).

         
Returns with maximum load (average annual total returns) are as follows:
<TABLE>
<CAPTION>

Periods Ended
December 31, 1996          One Year              Since Inception
<S>                        <C>                   <C>
 
Arizona                     .40%                 3.27% (12/31/93)
Florida                     .74%                 3.58% (12/31/93)
Maryland                   1.16%                 3.90% (9/30/93)
Michigan                   1.42%                 4.19% (9/30/93)
New York                   1.03%                 4.06% (9/30/93)
Pennsylvania               1.14%                 4.10% (12/31/93)
Virginia                    .87%                 4.27% (9/30/93) 
</TABLE>


          
Returns without maximum load are as follows:

<TABLE>
<CAPTION>

Periods Ended
December 31, 1996          One Year              Since Inception
<S>                        <C>                   <C>
 
Arizona                    3.17%                 4.23% (12/31/93)
Florida                    3.53%                 4.54% (12/31/93)
Maryland                   3.96%                 4.78% (9/30/93)
Michigan                   4.19%                 5.08% (9/30/93)
New York                   3.79%                 4.95% (9/30/93)
Pennsylvania               3.92%                 5.06% (12/31/93)
Virginia                   3.82%                 5.16% (9/30/93) 
</TABLE>


         
A Fund may also  advertise its "yield" and "taxable  equivalent  yield." As with
total  return,  both  yield  figures  are  historical  and are not  intended  to
indicate future  performance.  "Yield" quotations refer to the aggregate imputed
yield-to-maturity  of each of the Fund's  investments  based on the market value
as of the  last day of a given  thirty-day  or  one-month  period  less  accrued
expenses  (net  of  reimbursement),  divided  by the  average  daily  number  of
outstanding  shares  times  the  maximum  offering  price on the last day of the
period  (so  that  the  effect  of  the  sales   charge  is   included   in  the
calculation),  compounded on a "bond  equivalent," or semi-annual,  basis. Yield
is computed according to the following formula: 

                          Yield = 2[(a-b/cd +1)6 - 1]

where a =  dividends  and  interest  earned  during  the  period;  b =  expenses
accrued for the period (net of  reimbursement);  c = the average daily number of
shares  outstanding  during the period that were entitled to receive  dividends;
and d = the maximum offering price per share on the last day of the period.

         The  taxable  equivalent  yield  is the  yield  an  investor  would  be
required to obtain from taxable  investments  to equal the Fund's yield,  all or
a portion of which may be exempt from federal  income taxes.  The double taxable
equivalent  yield for the combined  federal and state level is computed for each
class by taking the  portion of the yield  exempt from  regular  federal and the
specific state income taxes and  multiplying  the exempt yield by a factor based
on a stated  income tax rate,  then  adding the portion of the yield that is not
exempt from  regular  federal  and  specific  state  income  taxes.  The taxable
equivalent  yield for the  federal  level  only is  computed  for each  class by
taking  the  portion  of  the  yield  exempt  from  federal   income  taxes  and
multiplying  the  exempt  yield by a factor  based on a stated  income tax rate,
then  adding the  portion of the yield that is not exempt  from  federal  income
taxes.  The factor which is used to calculate  the tax  equivalent  yield is the
reciprocal  of the  difference  between 1 and the  applicable  income  tax rate,
which will be stated in the advertisement.

        
The  yield  and tax  equivalent  yield  for the  Fund's  Class A shares  for the
thirty days ending December 31, 1996 is as follows:

<TABLE>
<CAPTION>
                      SEC             Tax Equivalent          Tax Equivalent
                      Yield           Yield at 36%            Yield at 39.6%
                                      Federal Tax RateFederal Tax Rate
<S>                   <C>             <C>                     <C>

Arizona               3.78%           5.90%                   6.26%
Florida               4.55%           7.11%                   7.53%
Maryland              4.23%           6.61%                   7.00%
Michigan              4.06%           6.34%                   6.72%
New York              4.11%           6.42%                   6.80%
Pennsylvania          4.24%           6.63%                   7.02%
Virginia              3.80%           5.94%                   6.29% 
</TABLE>


                                  ADVERTISING

         The Funds or their  affiliates  may  provide  information  such as, but
not  limited  to,  the  economy,   investment  climate,  investment  principles,
sociological   conditions  and  political   ambiance.   Discussion  may  include
hypothetical  scenarios  or  lists  of  relevant  factors  designed  to aid  the
investor in  determining  whether the Funds are  compatible  with the investor's
goals.  The Funds may list  portfolio  holdings or give  examples or  securities
that may have been considered for inclusion in the Funds, whether held or not.
         The Funds or their affiliates may supply  comparative  performance data
and rankings  from  independent  sources such as  Donoghue's  Money Fund Report,
Bank  Rate  Monitor,  Money,  Forbes,  Lipper  Analytical  Services,  Inc.,  CDA
Investment  Technologies,   Inc.,  Wiesenberger  Investment  Companies  Service,
Russell 2000/Small Stock Index, Mutual Fund Values Morningstar  Ratings,  Mutual
Fund Forecaster,  Barron's,  The Wall Street Journal, and Schabacker  Investment
Management,  Inc. Such averages  generally do not reflect any front- or back-end
sales  charges  that may be  charged  by Funds in that  grouping.  The Funds may
also cite to any source,  whether in print or  on-line,  such as  Bloomberg,  in
order to acknowledge  origin of  information.  The Funds may compare  themselves
or their  portfolio  holdings  to other  investments,  whether  or not issued or
regulated  by  the  securities   industry,   including,   but  not  limited  to,
certificates  of deposit and  Treasury  notes.  The Funds,  their  Advisor,  and
their  affiliates  reserve  the  right to  update  performance  rankings  as new
rankings become available.

                        DIRECTORS/TRUSTEES AND OFFICERS

        
RICHARD L.  BAIRD,  JR.,  Trustee.  Mr.  Baird is  Director  of Finance  for the
Family  Health  Council,   Inc.  in  Pittsburgh,   Pennsylvania,   a  non-profit
corporation which provides family planning services,  nutrition,  maternal/child
health  care,  and  various   health   screening   services.   Mr.  Baird  is  a
trustee/director  of each of the  investment  companies in the Calvert  Group of
Funds,  except  for  Acacia  Capital  Corporation,  Calvert  New World  Fund and
Calvert  World  Values  Fund.  DOB:  05/09/48.   Address:  211  Overlook  Drive,
Pittsburgh, Pennsylvania 15216. 
        
FRANK H. BLATZ,  JR., Esq.,  Trustee.  Mr. Blatz is a partner in the law firm of
Snevily,  Ely,  Williams,  Gurrieri  & Blatz.  He was  formerly  a partner  with
Abrams,  Blatz, Gran,  Hendricks & Reina, P.A. DOB: 10/29/35.  Address: 308 East
Broad Street, PO Box 2007, Westfield, New Jersey 07091.
         
FREDERICK  T. BORTS,  M.D.,  Trustee.  Dr.  Borts is a  radiologist  with Kaiser
Permanente.  Prior to that, he was a radiologist  at Bethlehem  Medical  Imaging
in Allentown,  Pennsylvania.  DOB: 07/23/49.  Address: 2040 Nuuanu Avenue #1805,
Honolulu, Hawaii, 96817. 
          
     1 CHARLES E. DIEHL,  Trustee.  Mr. Diehl is Vice  President  and  Treasurer
Emeritus of the George  Washington  University,  and has retired from University
Support  Services,  Inc. of Herndon,  Virginia.  He is also a Director of Acacia
Mutual Life Insurance Company. DOB: 10/13/22.  Address: 1658 Quail Hollow Court,
McLean, Virginia 22101.
         
DOUGLAS  E.  FELDMAN,  M.D.,  Trustee.  Dr.  Feldman  practices  head  and  neck
reconstructive  surgery  in  the  Washington,   D.C.,  metropolitan  area.  DOB:
05/23/48. Address: 7536 Pepperell Drive, Bethesda, Maryland 20817. 
         
PETER W.  GAVIAN,  CFA,  Trustee.  Mr.  Gavian was a principal of Gavian De Vaux
Associates,  an  investment  banking  firm. He continues to be President of with
Corporate  Finance of Washington,  Inc. DOB:  12/08/32.  Address:  3005 Franklin
Road North, Arlington, Virginia 22201. 
         
JOHN G.  GUFFEY,  JR.,  Trustee.  Mr.  Guffey is chairman of the Calvert  Social
Investment  Foundation,  organizing  director of the  Community  Capital Bank in
Brooklyn,  New York,  and a financial  consultant to various  organizations.  In
addition,  he is a Director  of the  Community  Bankers  Mutual  Fund of Denver,
Colorado,  and the Treasurer  and Director of Silby,  Guffey,  and Co.,  Inc., a
venture  capital  firm.  Mr. Guffey is a  trustee/director  of each of the other
investment  companies in the Calvert Group of Funds,  except for Acacia  Capital
Corporation and Calvert New World Fund. DOB:  05/15/48.  Address:  7205 Pomander
Lane, Chevy Chase, Maryland 20815. 
         
M. CHARITO  KRUVANT,  Trustee.  Ms. Kruvant is President of Creative  Associates
International,  Inc., a firm that  specializes in human  resources  development,
information  management,  public  affairs  and private  enterprise  development.
DOB: 12/08/45.  Address:  5301 Wisconsin Avenue, N.W.,  Washington,  D.C. 20015.

         
ARTHUR J.  PUGH,  Trustee.  Mr.  Pugh  serves as a  Director  of Acacia  Federal
Savings Bank. DOB: 09/24/37.  Address: 4823 Prestwick Drive,  Fairfax,  Virginia
22030. 
       
     1 DAVID R.  ROCHAT,  Senior  Vice  President  and  Trustee.  Mr.  Rochat is
Executive Vice President of Calvert Asset Management Company, Inc., Director and
Secretary of Grady, Berwald and Co., Inc., and Director and President of Chelsea
Securities, Inc. DOB: 10/07/37. Address: Box 93, Chelsea, Vermont 05038. 
         
     1 D. WAYNE SILBY, Esq., Trustee. Mr. Silby is a trustee/director of each of
the  investment  companies  in the  Calvert  Group of Funds,  except  for Acacia
Capital  Corporation  and  Calvert  New World  Fund.  Mr.  Silby is an  officer,
director  and  shareholder  of Silby,  Guffey & Company,  Inc.,  which serves as
general partner of Calvert Social Venture Partners  ("CSVP").  CSVP is a venture
capital firm investing in socially  responsible  small  companies.  He is also a
Director of Acacia Mutual Life Insurance Company.  DOB: 07/20/48.  Address: 1715
18th Street, N.W., Washington, D.C. 20009. 
        
         
RENO J. MARTINI,  Senior Vice  President.  Mr.  Martini is a director and Senior
Vice  President of Calvert  Group,  Ltd.,  and Senior Vice  President  and Chief
Investment  Officer of Calvert Asset  Management  Company,  Inc. Mr.  Martini is
also  a  director  and  President  of  Calvert-Sloan  Advisers,  L.L.C.,  and  a
director and officer of Calvert New World Fund. DOB: 1/13/50. 
         
RONALD  M.  WOLFSHEIMER,   CPA,  Treasurer.   Mr.  Wolfsheimer  is  Senior  Vice
President and  Controller of Calvert  Group,  Ltd. and its  subsidiaries  and an
officer  of each of the  other  investment  companies  in the  Calvert  Group of
Funds.  Mr.  Wolfsheimer  is  Vice  President  and  Treasurer  of  Calvert-Sloan
Advisers,  L.L.C., and a director of Calvert  Distributors,  Inc. DOB: 07/24/47.

        
WILLIAM  M.  TARTIKOFF,  Esq.,  Vice  President  and  Assistant  Secretary.  Mr.
Tartikoff  is an  officer of each of the  investment  companies  in the  Calvert
Group of Funds,  and is Senior Vice  President,  Secretary,  and General Counsel
of Calvert Group,  Ltd.,  and each of its  subsidiaries.  Mr.  Tartikoff is also
Vice President and Secretary of  Calvert-Sloan  Advisers,  L.L.C., a director of
Calvert  Distributors,   Inc.,  and  is  an  officer  of  Acacia  National  Life
Insurance Company. DOB: 08/12/47. 
         
EVELYNE S. STEWARD,  Vice  President.  Ms. Steward is a director and Senior Vice
President of Calvert  Group,  Ltd.,  and a director of  Calvert-Sloan  Advisers,
L.L.C.  She is the sister of Philip J. Schewetti,  the portfolio  manager of the
CSIF Equity Portfolio. DOB: 11/14/52. 
         
DANIEL K. HAYES,  Vice  President.  Mr. Hayes is Vice President of Calvert Asset
Management  Company,  Inc.,  and is an officer  of each of the other  investment
companies  in the  Calvert  Group of Funds,  except for  Calvert New World Fund,
Inc. DOB: 09/09/50.
        
SUSAN  WALKER  BENDER,  Esq.,  Assistant  Secretary.  Ms.  Bender  is  Associate
General  Counsel  of  Calvert  Group,  Ltd.  and  an  officer  of  each  of  its
subsidiaries and Calvert-Sloan  Advisers,  L.L.C. She is also an officer of each
of  the  other  investment  companies  in  the  Calvert  Group  of  Funds.  DOB:
01/29/59. 
         
KATHERINE STONER, Esq., Assistant Secretary. Ms. Stoner is Assistant Counsel
of Calvert Group and an officer of each of its subsidiaries and Calvert-Sloan
Advisers, L.L.C. She is also an officer of each of the other investment
companies in the Calvert Group of Funds. DOB: 10/21/56. 
         
LISA CROSSLEY, Esq., Assistant Secretary and Compliance Officer. Ms. Crossley
is Assistant Counsel of Calvert Group and an officer of each of its
subsidiaries and Calvert-Sloan Advisers, L.L.C. She is also an officer of each
of the other investment companies in the Calvert Group of Funds. DOB:
12/31/61. 
         
IVY WAFFORD DUKE,  Esq.,  Assistant  Secretary Ms. Duke is Assistant  Counsel of
Calvert  Group and an  officer  of each of its  subsidiaries  and  Calvert-Sloan
Advisers.  L.L.C.  She is  also an  officer  of  each  of the  other  investment
companies in the Calvert Group of Funds. DOB: 09/07/68. 


     1  Directors  deemed  to be  "interested  persons"  of the Fund  under  the
Investment  Company Act of 1940, by virtue of their  affiliation with the Fund's
Advisor.


         
Each of the above  directors/trustees  and  officers  is a  director/trustee  or
officer of each of the  investment  companies in the Calvert Group of Funds with
the exception of Calvert Social  Investment  Fund, of which only Messrs.  Baird,
Guffey and Silby are among the trustees,  Acacia Capital  Corporation,  of which
only  Messrs.  Blatz,  Diehl  and Pugh are among the  directors,  Calvert  World
Values  Fund,  Inc.,  of which  only  Messrs.  Guffey  and  Silby  are among the
directors,  and  Calvert  New World  Fund,  Inc.,  of which only Mr.  Martini is
among the  directors.  The address of directors and officers,  unless  otherwise
noted, is 4550 Montgomery Avenue, Suite 1000N, Bethesda, Maryland 20814.
         
The Audit  Committee of the Board of  Directors/Trustees  is composed of Messrs.
Baird,  Blatz,   Feldman,   Guffey  and  Pugh.  The  Board's  Investment  Policy
Committee is composed of Messrs. Borts, Diehl, Gavian, Rochat and Silby. 
         Directors/Trustees  and  officers  of the Fund as a group own less than
1% of each Fund's outstanding shares.
         
Directors/Trustees  of the  Fund  not  affiliated  with  the  Advisor  currently
receive  an  annual  fee of  $20,500  for  service  as a member  of the Board of
Directors/Trustees  of the  Calvert  Group of Funds plus a fee of $750 to $1,500
for each Board and Committee  meeting  attended;  such fees are allocated  among
the Funds on the basis of their net  assets.  For the 1996  fiscal  period,  the
Funds paid  director/trustee  fees of $279, $501, $1,205,  $600, $635, $444, and
$1,190, for the Arizona,  Florida,  Maryland,  Michigan, New York, Pennsylvania,
and Virginia Portfolios, respectively. 
        
Directors/Trustees  of the  Fund not  affiliated  with the  Fund's  Advisor  may
elect to defer  receipt of all or a percentage  of their fees and invest them in
any  fund in the  Calvert  of  Funds  through  the  Directors/Trustees  Deferred
Compensation  Plan (shown as "Pension or Retirement  Benefits Accrued as part of
Fund  Expenses,"  below).  Deferral  of the fees is  designed  to  maintain  the
parties  in the same  position  as if the fees  were  paid on a  current  basis.
Management  believes  this will have a negligible  effect on the Fund's  assets,
liabilities,  net assets,  and net income per share,  and will ensure that there
is no duplication of advisory fees.

                          Director Compensation Table

<TABLE>
<CAPTION>

Fiscal Year 1996         Aggregate          Pension or            Total
(unaudited numbers)      Compensation       Retirement         Compensation from
Name of Director         from Registrant    Benefits         Registrant and Fund
                         for service as     Accrued as part      Complex paid to
                         Director           of Registrant         Directors<F3>
                                            Expenses <F2>
<S>                      <C>                <C>                   <C>
Richard L. Baird, Jr.    $1898              $0                    $34,925
Frank H. Blatz, Jr.      $1935              $1935                 $37,875
Frederick T. Borts       $1793              $0                    $32,675
Charles E. Diehl         $1807              $1807                 $35,475
Douglas E. Feldman       $1873              $0                    $34,175
Peter W. Gavian          $1872              $560                  $34,175
M. Charito Kruvant       $905               $0                    $24,313
John G. Guffey, Jr.      $1816              $0                    $49,433
Arthur J. Pugh           $2011              $0                    $36,736
D. Wayne Silby           $1710              $0                    $56,398 

<FN>
<F2> Messrs.  Blatz,  Diehl,  and Gavian have chosen to defer a portion of their
compensation.  As of December 31, 1996, total deferred  compensation,  including
dividends  and  capital   appreciation,   was  $428,689.46,   $428,442.42,   and
$96,332.93, for each named director, respectively.
<F3> As of December 31, 1996,  the Fund Complex  consists of nine (9) registered
investment companies.
</FN>
</TABLE>


                               INVESTMENT ADVISOR

         The Fund's  Investment  Advisor is Calvert  Asset  Management  Company,
Inc.,  4550  Montgomery  Avenue,  Suite  1000N,  Bethesda,   Maryland  20814,  a
subsidiary of Calvert Group,  Ltd.,  which is a subsidiary of Acacia Mutual Life
Insurance Company of Washington, D.C.
         The  Investment  Advisory  Agreement  between  the Fund and the Advisor
will remain in effect  indefinitely,  provided  continuance is approved at least
annually by the vote of the holders of a majority of the  outstanding  shares of
the Funds,  or by the  directors/trustees  of the Funds;  and  further  provided
that such  continuance  is also  approved  annually by the vote of a majority of
the  directors/trustees  of the Funds who are not  parties to the  Agreement  or
interested  persons of such parties,  cast in person at a meeting called for the
purpose of voting on such  approval.  The Agreement  may be  terminated  without
penalty by either  party on 60 days'  prior  written  notice;  it  automatically
terminates in the event of its assignment.
         Under  the   Agreement,   the  Advisor   manages  the   investment  and
reinvestment  of the Fund's assets,  subject to the direction and control of the
Funds' Boards of  Directors/Trustees.  For its services, the Advisor receives an
annual fee of 0.60% of the first $500  million of the Fund's  average  daily net
assets,  0.50% of the next $500 million of such assets,  and 0.40% of all assets
over $1 billion.
        
The  advisory  fee is payable  monthly.  The Advisor  reserves  the right (i) to
waive  all  or a part  of its  fee  and  (ii)  to  compensate,  at its  expense,
broker-dealers  in  consideration  of  their   promotional  and   administrative
services.  The Advisor may recapture in later years, to the extent  permitted by
law,  fees it waived and  expenses  it paid in prior  years.  Specifically,  the
Advisor may  recapture any fees waived or deferred and expenses  reimbursed  for
the prior  two-year  period,  but in no event may it recapture  fees or expenses
for any  period  later  than the  two-year  period  ending  December  31,  1996.
Recapture  is  permitted  only to the  extent it does not  result in the  Fund's
aggregate  expenses  exceeding an annual  expense  limit of 2.00% of its average
daily net assets.  The  advisory  fee incurred in any given year will be paid in
full before any recapture fees are paid for a prior year.  Recaptured  fees will
apply  to the  most  recent  suspension/reimbursement  period.  During  the 1994
fiscal period,  the Advisor received  advisory fees of $0, $43, $2,444,  $1,690,
$659,  $109,  and $2,392,  for the Arizona,  Florida,  Maryland,  Michigan,  New
York,  Pennsylvania,  and Virginia Portfolios,  respectively,  and, for the same
period, waived advisory fees of $12,272,  $19,011,  $50,168,  $42,150,  $19,257,
$12,665, and $41,569, for the Arizona,  Florida,  Maryland,  Michigan, New York,
Pennsylvania,  and  Virginia  Portfolios,  respectively.  For  the  1995  fiscal
period,  the  Advisor  received  advisory  fees of $17,286,  $25,034,  $270,912,
$37,455,  $29,584,  $21,720,  and $59,769, for the Arizona,  Florida,  Maryland,
Michigan, New York, Pennsylvania,  and Virginia Portfolios,  respectively,  and,
for the  same  period,  waived  advisory  fees  of  $14,027,  $15,204,  $38,349,
$19,899,  $21,022,  $16,922,  and $29,520, for the Arizona,  Florida,  Maryland,
Michigan, New York,  Pennsylvania,  and Virginia Portfolios,  respectively.  For
the  1996  fiscal  period,  the  Advisor  received  advisory  fees  of  $16,538,
$30,771,  $72,423,  $36,078,  $38,381,  $27,180,  and $72,322,  for the Arizona,
Florida,  Maryland,  Michigan, New York, Pennsylvania,  and Virginia Portfolios,
respectively. 
         The Advisor  provides  each Fund with  investment  advice and research,
pays the salaries and fees of all  directors/trustees  and executive officers of
the Fund who are  principals of the Advisor,  and pays certain Fund  advertising
and promotional  expenses.  The Funds pay all other administrative and operating
expenses,   including:   custodial   fees;   shareholder   servicing,   dividend
disbursing and transfer agency fees;  administrative  service fees;  federal and
state  securities  registration  fees;  insurance  premiums;  trade  association
dues;  interest,  taxes and other  business  fees;  legal  and audit  fees;  and
brokerage  commissions and other costs  associated with the purchase and sale of
portfolio securities.
         The Advisor has agreed to reimburse the Funds for all expenses,
excluding brokerage, taxes, interest, and extraordinary items exceeding, on a
pro rata basis, the most restrictive expense limitation in those states which
the Fund's shares are qualified for sale.

                            ADMINISTRATIVE SERVICES

            
Calvert  Administrative  Services Company, a wholly-owned  subsidiary of Calvert
Group,  Ltd.,  has been retained by the Fund to provide  certain  administrative
services  necessary to the conduct of the Fund's affairs.  Such services include
the  preparation  of corporate  and  regulatory  reports and filings,  portfolio
accounting,  and the daily  determination of net investment income and net asset
value per share.  Calvert  Administrative  Services  Company  receives an annual
fee of 0.10% of each Fund's  average  net assets for  providing  such  services.
The Funds  waived  the fee for the 1994 and 1995  fiscal  periods.  For the 1996
fiscal period,  Calvert  Administrative  Services Company received an annual fee
of $2,756,  $5,128,  $12,071,  $6,013,  $6,397, $4,530, $12,054 for the Arizona,
Florida,  Maryland,  Michigan, New York, Pennsylvania,  and Virginia Portfolios,
respectively.     

                             METHOD OF DISTRIBUTION

            
The Funds  have  entered  into an  agreement  with  Calvert  Distributors,  Inc.
("CDI"),  whereby CDI, acting as principal  underwriter for the Series,  makes a
continuous  offering of the Series'  securities on a "best efforts" basis. Prior
to April 1, 1995, the principal  underwriter was Calvert Securities  Corporation
("CSC").  Under  the terms of the  agreement,  CDI  bears  all its  expenses  of
providing  services  pursuant  to  the  agreement,   including  payment  of  any
commissions  and service  fees.  CDI receives all sales  charges  imposed on the
Funds'  shares  and  compensates  broker-dealer  firms for sales of such  shares
(see  "Alternative  Sales  Options"  in  the  Prospectus).  CDI is  entitled  to
receive  reimbursement  of distribution  expenses  pursuant to the  Distribution
Plans (see below).  For the 1994,  1995, and 1996 fiscal periods,  the Fund paid
no  Distribution  Plan  expenses.  In fiscal 1994, CSC received sales charges in
excess of the  dealer  reallowance  of $7,757,  $20,467,  $29,470,  $0,  $7,872,
$718,  and $43,471,  for the Arizona,  Florida,  Maryland,  Michigan,  New York,
Pennsylvania,  and  Virginia  Portfolios,  respectively.  For fiscal  1995,  CDI
received  sales  charges in excess of the dealer  reallowance  of $3,016,  $287,
$6,482, $1,441, $3,925, $2,788, and $6,479, for the Arizona, Florida,  Maryland,
Michigan, New York,  Pennsylvania,  and Virginia Portfolios,  respectively.  For
fiscal 1996, CDI received  sales charges in excess of the dealer  reallowance of
$1,262,  $849,  $4,214,  $670,  $1,977,  $1,228,  and $9,039,  for the  Arizona,
Florida,  Maryland,  Michigan, New York, Pennsylvania,  and Virginia Portfolios,
respectively.     
            
Pursuant to Rule 12b-1 under the  Investment  Company Act of 1940 ("1940  Act"),
the Funds have adopted  Distribution  Plans (the  "Plans")  which permit them to
pay certain  expenses  associated  with the  distribution  of its  shares.  Such
expenses may not exceed,  on an annual basis,  0.15% of the Funds' average daily
net  assets.  As of October  1,  1998,  expenses  may not  exceed,  on an annual
basis, 0.25% of the Funds' average daily net assets.     
         The Plans were approved by the Board of  Directors/Trustees,  including
the  Directors/Trustees  who are not "interested  persons" of the Funds (as that
term is  defined in the 1940 Act) and who have no direct or  indirect  financial
interest  in the  operation  of the Plans or in any  agreements  related  to the
Plans.  The  selection  and  nomination  of the  Directors/Trustees  who are not
interested  persons  of  the  Fund  is  committed  to  the  discretion  of  such
disinterested    Directors/Trustees.    In   establishing    the   Plans,    the
Directors/Trustees  considered  various  factors  including  the  amount  of the
distribution fee. The  Directors/Trustees  determined that there is a reasonable
likelihood that the Plans will benefit the Funds and their shareholders.
         
The  Plans  may be  terminated  by  vote  of a  majority  of the  non-interested
Directors/Trustees  who have no direct or  indirect  financial  interest  in the
Plans,  or by vote of a majority of the  outstanding  shares.  Any change in the
Plans  that  would  materially  increase  the  distribution  cost  to the  Funds
requires  approval of the shareholders;  otherwise,  the Plans may be amended by
the   Directors/Trustees,   including   a   majority   of   the   non-interested
Directors/Trustees as described above. 
         The Plans will continue in effect successive  one-year terms,  provided
that such  continuance  is  specifically  approved by (i) the vote of a majority
of the  Directors/Trustees  who are  not  parties  to the  Plans  or  interested
persons  of any  such  party  and  who  have no  direct  or  indirect  financial
interest in the Plans,  and (ii) the vote of a majority  of the entire  Board of
Directors/Trustees.
         Apart from the Plans,  the  Advisor,  at its  expense,  may incur costs
and pay expenses associated with the distribution of shares of the Funds.

                    TRANSFER AND SHAREHOLDER SERVICING AGENT

         
Calvert  Shareholder  Services,  Inc.  ("CSSI"),  a subsidiary of Calvert Group,
Ltd.,  and Acacia  Mutual,  has been  retained  by the Funds to act as  transfer
agent,   dividend  disbursing  agent  and  shareholder  servicing  agent.  These
responsibilities  include:  responding to shareholder inquiries and instructions
concerning  their  accounts;  crediting  and debiting  shareholder  accounts for
purchases  and  redemptions  of Fund shares and  confirming  such  transactions;
daily updating of  shareholder  accounts to reflect  declaration  and payment of
dividends;   and   preparing   and   distributing   semi-annual   statements  to
shareholders  regarding their accounts.  For such services,  Calvert Shareholder
Services,  Inc.,  receives  compensation  based  on the  number  of  shareholder
accounts  and the  number  of  transactions.  The  fees  paid by the  Series  to
Calvert  Shareholder  Services,  Inc.  In fiscal  1994,  CSSI  received  $1,495,
$1,143, $6,690,  $2,771,  $3,207, $2,022, and $5,258, for the Arizona,  Florida,
Maryland,   Michigan,   New  York,   Pennsylvania,   and  Virginia   Portfolios,
respectively.  For  the  1995  fiscal  period,  CSSI  received  $4,131,  $3,389,
$9,630, $5,414, $6,915, $4,711, and $8,735, for the Arizona, Florida,  Maryland,
Michigan, New York,  Pennsylvania,  and Virginia Portfolios,  respectively.  For
the 1996 fiscal period, CSSI received $2,759,  $2,162,  $9,807,  $4,739, $7,183,
$3,841,  and $8,953, for the Arizona,  Florida,  Maryland,  Michigan,  New York,
Pennsylvania, and Virginia Portfolios, respectively. 

                     INDEPENDENT ACCOUNTANTS AND CUSTODIANS

         
Coopers and  Lybrand  L.L.P.  has been  selected  by the Board of  Directors  to
serve as  independent  accountants  for all  portfolios  of the Fund for  fiscal
year 1997.  State  Street  Bank & Trust  Company,  N.A.,  225  Franklin  Street,
Boston,  MA 02110,  serves  as  custodian  of the  Series's  investments.  First
National Bank of Maryland,  25 South Charles Street,  Baltimore,  Maryland 21203
acts as  custodian of certain of the Series's  cash  assets.  Neither  custodian
has any part in  deciding  the  Fund's  investment  policies  or the  choice  of
securities that are to be purchased or sold by the Series. 

                             PORTFOLIO TRANSACTIONS

         Portfolio   transactions   are   undertaken   on  the  basis  of  their
desirability  from  an  investment  standpoint.  Investment  decisions  and  the
choice  of  brokers  and  dealers  are  made by the  Fund's  Advisor  under  the
direction and supervision of the Fund's Board of Directors/Trustees.
         Broker-dealers  who  execute  portfolio  transactions  on behalf of the
Funds are selected on the basis of their  professional  capability and the value
and quality of their services.  The Advisor may execute  portfolio  transactions
with or through  broker-dealers who have sold shares of the Fund. However,  such
sales will not be a  qualifying  or  disqualifying  factor in a  broker-dealer's
selection  nor will the  selection of any  broker-dealer  be based on the volume
of Fund shares  sold.  The Advisor or its  affiliate  may  compensate,  at their
expense,   such   broker-dealers  in  consideration  of  their  promotional  and
administrative services.
        
In fiscal 1994,  the  portfolio  turnover was 22%,  93%, 77%, 65%, 56%, 96%, and
65%, for the Arizona, Florida, Maryland,  Michigan, New York, Pennsylvania,  and
Virginia  Portfolios,  respectively.  For the 1995 fiscal period,  the portfolio
turnover was 10%, 44%,  11%,  22%, 13%, 17%, and 11%, for the Arizona,  Florida,
Maryland,   Michigan,   New  York,   Pennsylvania,   and  Virginia   Portfolios,
respectively.  For the 1996 fiscal period,  the portfolio turnover was 18%, 19%,
8%, 18%,  19%, 9%, and 4%, for the Arizona,  Florida,  Maryland,  Michigan,  New
York, Pennsylvania, and Virginia Portfolios, respectively.

                              GENERAL INFORMATION

         Calvert  Municipal  Fund,  Inc.,  was organized as a corporation  under
the General  Corporation  Law of the State of Maryland on February 4, 1992.  The
Fund includes the following  series:  (list all except Florida) Calvert National
Municipal  Intermediate  Fund  and  Calvert  California  Municipal  Intermediate
Fund,  Calvert  Maryland  Municipal  Intermediate  Fund. Prior to March 1, 1994,
Calvert National Municipal  Intermediate Fund was known as Calvert  Intermediate
Municipal Fund.
         First  Variable  Rate  Fund  for   Government   Income  was  originally
organized as a Maryland corporation,  and became a Massachusetts  business trust
on April 30,  1984.  It has two  series,  one doing  business  as Calvert  First
Government  Money  Market  Fund,  and  the  other,   Calvert  Florida  Municipal
Intermediate Fund.
         
Each  share of each Fund  represents  an equal  proportionate  interest  in that
Fund with each other share and is entitled to such  dividends and  distributions
out of the income  belonging  to such series as declared by the Board.  Upon any
liquidation  of the Funds,  shareholders  are  entitled to share pro rata in the
net assets belonging to that Fund available for distribution. 
         The Funds will send  shareholders  unaudited  semi-annual  and  audited
annual  reports  that  will  include  the  Funds'  net asset  value  per  share,
portfolio securities, income and expenses, and other financial information.
         The   Funds'    registration    statements,    containing    additional
information,  are on file with the  Securities  and Exchange  Commission and are
available to the public.

                              FINANCIAL STATEMENTS

        
The audited  financial  statements in the Funds' Annual Report to  Shareholders,
dated  December 31, 1996,  are  expressly  incorporated  by reference and made a
part of this  Statement of Additional  Information.  A copy of the Annual Report
may be obtained free of charge by writing or calling the Funds. 

                                    APPENDIX

Municipal Obligations
         Municipal  obligations are debt obligations  issued by states,  cities,
municipalities,   and  their   agencies  to  obtain  funds  for  various  public
purposes.  Such  purposes  include  the  construction  of a wide range of public
facilities,  the refunding of  outstanding  obligations,  the obtaining of funds
for  general  operating  expenses,  and the  lending  of funds  to other  public
institutions   and  facilities.   In  addition,   certain  types  of  industrial
development  bonds are  issued by or on behalf of public  authorities  to obtain
funds  for  many  types of  local,  privately  operated  facilities.  Such  debt
instruments  are considered  municipal  obligations if the interest paid on them
is  exempt  from  federal  income  tax in the  opinion  of bond  counsel  to the
issuer.  Although the interest paid on the proceeds from private  activity bonds
used  for the  construction,  equipment,  repair  or  improvement  of  privately
operated  industrial or commercial  facilities may be exempt from federal income
tax,  current  federal  tax law places  substantial  limitations  on the size of
such issues.
         Municipal  obligations  are  generally  classified  as either  "general
obligation" or "revenue''  bonds.  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 are payable 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,  but not
from the general taxing power.  Tax-exempt  industrial  development bonds are in
most cases  revenue  bonds and do not  generally  carry the pledge of the credit
of the issuing  municipality.  There are, of course,  variations in the security
of  municipal  obligations,  both within a particular  classification  and among
classifications.
         Municipal  obligations  are  generally  traded on the basis of a quoted
yield to maturity,  and the price of the  security is adjusted so that  relative
to the stated rate of interest it will return the quoted rate to the purchaser.
         Short-term  and   limited-term   municipal   obligations   include  Tax
Anticipation  Notes,   Revenue  Anticipation  Notes,  Bond  Anticipation  Notes,
Construction   Loan  Notes,   and  Discount  Notes.   The  maturities  of  these
instruments  at the time of issue  generally will range between three months and
one year.  Pre-Refunded  Bonds with longer nominal maturities that are due to be
retired with the proceeds of an escrowed  subsequent  issue at a date within one
year and three years of the time of acquisition are also  considered  short-term
and limited-term municipal obligations.

Municipal Note and Bond Ratings
Description  of  Moody's  Investors   Service,   Inc.'s  ratings  of  state  and
municipal notes:
         Moody's  ratings  for state and  municipal  notes and other  short-term
obligations are designated  Moody's  Investment Grade ("MIG").  This distinction
is in  recognition  of  the  differences  between  short-term  credit  risk  and
long-term risk.
         MIG  1:  Notes  bearing  this  designation  are of  the  best  quality,
enjoying  strong  protection  from  established  cash  flows of funds  for their
servicing  or  from  established  and  broad-based  access  to  the  market  for
refinancing, or both.
         MIG2:  Notes  bearing  this  designation  are  of  high  quality,  with
margins of protection ample although not so large as in the preceding group.
         MIG3:  Notes bearing this  designation are of favorable  quality,  with
all security elements  accounted for but lacking the undeniable  strength of the
preceding  grades.  Market access for refinancing,  in particular,  is likely to
be less well established.
         MIG4:  Notes  bearing  this   designation  are  of  adequate   quality,
carrying  specific risk but having  protection  commonly regarded as required of
an investment security and not distinctly or predominantly speculative.

Description of Moody's  Investors  Service  Inc.'s/Standard  & Poor's  municipal
bond ratings:
         Aaa/AAA:  Best  quality.  These  bonds  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.  This rating  indicates an extremely strong capacity to pay
principal and interest.
         Aa/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.  They are rated
lower than the best bonds because  margins of protection  may not be as large as
in  Aaa  securities,  fluctuation  of  protective  elements  may  be of  greater
amplitude,  or there may be other elements  present which make  long-term  risks
appear somewhat larger than in Aaa securities.
         A/A:  Upper-medium  grade  obligations.   Factors  giving  security  to
principal  and interest  are  considered  adequate,  but elements may be present
which  make the  bond  somewhat  more  susceptible  to the  adverse  effects  of
circumstances and economic conditions.
         Baa/BBB:  Medium grade obligations;  adequate capacity to pay principal
and interest.  Whereas they normally  exhibit  adequate  protection  parameters,
adverse economic  conditions or changing  circumstances  are more likely to lead
to a  weakened  capacity  to pay  principal  and  interest  for  bonds  in  this
category than for bonds in the A category.
         Ba/BB,  B/B,  Caa/CCC,   Ca/CC:  Debt  rated  in  these  categories  is
regarded as  predominantly  speculative with respect to capacity to pay interest
and  repay  principal.  There may be some  large  uncertainties  and major  risk
exposure  to adverse  conditions.  The higher  the  degree of  speculation,  the
lower the rating.
         C/C: This rating is only for no-interest income bonds.
         D:  Debt  in  default;  payment  of  interest  and/or  principal  is in
arrears.


                                LETTER OF INTENT

Date                       

Calvert Distributors, Inc.
4550 Montgomery Avenue
Bethesda, MD 20814

Ladies and Gentlemen:

         By signing this Letter of Intent, or affirmatively marking the Letter
of Intent option on my Fund Account Application Form, I agree to be bound by
the terms and conditions applicable to Letters of Intent appearing in the
Prospectus and the Statement of Additional Information for the Fund and the
provisions described below as they may be amended from time to time by the
Fund. Such amendments will apply automatically to existing Letters of Intent.

         I intend to invest in the shares of:(Fund or Portfolio name*) during 
the thirteen (13) month period from the date of my first purchase
pursuant to this Letter (which cannot be more than ninety (90) days prior to
the date of this Letter or my Fund Account Application Form, whichever is
applicable), an aggregate amount (excluding any reinvestments of
distributions) of at least fifty thousand dollars ($50,000) which, together
with my current holdings of the Fund (at public offering price on date of this
Letter or my Fund Account Application Form, whichever is applicable), will
equal or exceed the amount checked below:

         __ $50,000 __ $100,000 __ $250,000 __ $500,000 __ $1,000,000

         Subject to the conditions specified below, including the terms of
escrow, to which I hereby agree, each purchase occurring after the date of
this Letter will be made at the public offering price applicable to a single
transaction of the dollar amount specified above, as described in the Fund's
prospectus. No portion of the sales charge imposed on purchases made prior to
the date of this Letter will be refunded.

         I am making no commitment to purchase shares, but if my purchases
within thirteen months from the date of my first purchase do not aggregate the
minimum amount specified above, I will pay the increased amount of sales
charges prescribed in the terms of escrow described below. I understand that
4.75% of the minimum dollar amount specified above will be held in escrow in
the form of shares (computed to the nearest full share). These shares will be
held subject to the terms of escrow described below.

         From the initial purchase (or subsequent purchases if necessary),
4.75% of the dollar amount specified in this Letter shall be held in escrow in
shares of the Fund by the Fund's transfer agent. For example, if the minimum
amount specified under the Letter is $50,000, the escrow shall be shares
valued in the amount of $2,375 (computed at the public offering price adjusted
for a $50,000 purchase). All dividends and any capital gains distribution on
the escrowed shares will be credited to my account.

         If the total minimum investment specified under the Letter is
completed within a thirteen month period, escrowed shares will be promptly
released to me. However, shares disposed of prior to completion of the
purchase requirement under the Letter will be deducted from the amount
required to complete the investment commitment.

         Upon expiration of this Letter, the total purchases pursuant to the
Letter are less than the amount specified in the Letter as the intended
aggregate purchases, Calvert Distributors, Inc. ("CDI") will bill me for an
amount equal to the difference between the lower load I paid and the dollar
amount of sales charges which I would have paid if the total amount purchased
had been made at a single time. If not paid by the investor within 20 days,
CDI will debit the difference from my account. Full shares, if any, remaining
in escrow after the aforementioned adjustment will be released and, upon
request, remitted to me.

         I irrevocably constitute and appoint CDI as my attorney-in-fact, with
full power of substitution, to surrender for redemption any or all escrowed
shares on the books of the Fund. This power of attorney is coupled with an
interest.

         The commission allowed by Calvert Distributors, Inc. to the
broker-dealer named herein shall be at the rate applicable to the minimum
amount of my specified intended purchases.

         The Letter may be revised upward by me at any time during the
thirteen-month period, and such a revision will be treated as a new Letter,
except that the thirteen-month period during which the purchase must be made
will remain unchanged and there will be no retroactive reduction of the sales
charges paid on prior purchases.

         In determining the total amount of purchases made hereunder, shares
disposed of prior to termination of this Letter will be deducted. My
broker-dealer shall refer to this Letter of Intent in placing any future
purchase orders for me while this Letter is in effect.


                                                     
Dealer

                                                     
Name of Investor(s)


By                                                   
Authorized Signer

                                                     
Address


                                                     
Date

                                                     
Signature of Investor(s)

                                                     
Date

                                                     
Signature of Investor(s)


* "Fund" in this Letter of Intent shall refer to the Fund or Portfolio, as
the case may be, here indicated.



                  CALVERT ARIZONA MUNICIPAL INTERMEDIATE FUND
                  CALVERT FLORIDA MUNICIPAL INTERMEDIATE FUND
                  CALVERT MARYLAND MUNICIPAL INTERMEDIATE FUND
                  CALVERT MICHIGAN MUNICIPAL INTERMEDIATE FUND
                  CALVERT NEW YORK MUNICIPAL INTERMEDIATE FUND
                CALVERT PENNSYLVANIA MUNICIPAL INTERMEDIATE FUND
                  CALVERT VIRGINIA MUNICIPAL INTERMEDIATE FUND

                      Statement of Additional Information
                                      
                              April 30, 1997 

INVESTMENT ADVISOR
Calvert Asset Management Company, Inc.
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814

INDEPENDENT ACCOUNTANTS
Coopers & Lybrand L.L.P.
217 E. Redwood Street
Baltimore, Maryland 21202-3316

TRANSFER AGENT
Calvert Shareholder Services, Inc.
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814

PRINCIPAL UNDERWRITER
Calvert Distributors, Inc.
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814


              TABLE OF CONTENTS

              Investment Objective                                    1
              Investment Policies                                     1
              Investment Restrictions                                 7
              Purchases and Redemptions of Shares                     8
              Dividends and Distributions                            10
              Tax Matters                                            10
              Valuation of Shares                                    11
              Calculation of Yield and Total Return                  11
              Advertising                                            14
              Directors and Officers                                 15
              Investment Advisor                                     17
              Administrative Services                                18
              Method of Distribution                                 18
              Transfer and Shareholder Servicing Agent               19
              Independent Accountants and Custodians                 19
              Portfolio Transactions                                 20
              General Information                                    20
              Financial Statements                                   20
              Appendix                                               21




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