LORD ABBETT TAX FREE INCOME FUND INC
485BPOS, 1996-04-25
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                                                      1940 Act File No. 811-3942
                                                     1933 Act File No. 333-01361
                                                     


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549



                                   FORM N-14

                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
    
                       [  ] Pre-Effective Amendment No.__
                       [X] Post-Effective Amendment No. 1      

                     LORD ABBETT TAX-FREE INCOME FUND, INC.
               (Exact Name of Registrant as Specified in Charter)


                 The General Motors Building, 767 Fifth Avenue
                            New York, New York 10153
                    (Address of Principal Executive Offices)
        Registrant's Telephone Number, Including Area Code: 800-426-1130

                               Kenneth B. Cutler
                         Vice President and Secretary
                    Lord Abbett Tax-Free Income Fund, Inc.
                          The General Motors Building
                               767 Fifth Avenue
                           New York, New York 10153
                    (Name and Address of Agent for Service)

         
                 Approximate Date of Proposed Public Offering:
 As soon as practicable after the effective date of the registration statement.

NO FILING FEE IS REQUIRED BECAUSE AN INDEFINITE NUMBER OF SHARES ARE BEING
REGISTERED PURSUANT TO RULE 24f-2 UNDER THE INVESTMENT COMPANY ACT OF 1940.
    
           IT IS PROPOSED THAT THIS FILING WILL BECOME EFFECTIVE ON
           THE DATE OF FILING PURSUANT TO PARAGRAPH (b) OF RULE 485.      
<PAGE>
 
                    LORD ABBETT TAX-FREE INCOME FUND, INC.
 
                             CROSS-REFERENCE SHEET
                          ITEMS REQUIRED BY FORM N-14

<TABLE> 
<CAPTION> 

PART A                                                 
ITEM NO.  ITEM CAPTION                                          PROSPECTUS CAPTION         
- --------  ------------                                          ------------------                 
<S>                                                    <C> 
1.  Beginning of Registration Statement and Outside    Cover Page of Registration State-
    Front Cover Page of Prospectus                     ment; Cover Page of Proxy Statement
                                                       and Prospectus
2.  Beginning and Outside Back Cover Page of           Table of Contents
    Prospectus
3.  Fee Table, Synopsis and Risk Factors               Fee Tables; Summary of Proposals
4.  Information about the Transaction                  Summary of Proposals; Information
                                                       About the Reorganizations
5.  Information about the Registrant                   Summary of Proposals; Comparative
                                                       Information about the Funds; Ad-
                                                       ditional Information; Prospectus of
                                                       Acquiring Fund dated March 20, 1996
6.  Information about the Company Being Acquired       Summary of Proposals; Comparative
                                                       Information about the Funds
7.  Voting Information                                 Meetings of Shareholders of the Re-
                                                       organized Fund and the Securities
                                                       Trust; Notice of Special Meeting of
                                                       Shareholders; Notice of Annual
                                                       Meeting of Shareholders; Summary of
                                                       Proposals
8.  Interest of Certain Persons and Experts            Additional Information
9.  Additional Information Required for Reoffering     Not Applicable
    by Persons Deemed to be Underwriters
</TABLE>
<PAGE>
 
<TABLE> 
<CAPTION> 

PART B                                                 
ITEM NO.  ITEM CAPTION                                          PROSPECTUS CAPTION         
- --------  ------------                                          ------------------                 
<S>                                                    <C> 
10.  Cover Page                                        Cover Page
11.  Table of Contents                                 Not Applicable
12.  Additional Information about the Registrant       Cover Page of Proxy Statement and
                                                       Prospectus; Acquiring Fund State-
                                                       ment of Additional Information dated
                                                       March 20, 1996 incorporated by
                                                       reference.
13.  Additional Information about the Company Being    Cover Page of Proxy Statement and
     Acquired                                          Prospectus; Reorganized Fund and
                                                       Securities Trust Statements of Addi-
                                                       tional Information incorporated by
                                                       reference dated January 1, 1996 and
                                                       March 1, 1996, respectively.
14.  Financial Statements                              Not Applicable

<CAPTION> 

PART C                                                                
ITEM NO.                                               PART C CAPTION 
- --------                                               -------------- 
<S>                                                    <C> 
15.  Indemnification                                   Indemnification
16.  Exhibits                                          Exhibits
17.  Undertakings                                      Undertakings
Signatures
</TABLE>
<PAGE>
 
       [Letterhead of Lord Abbett California Tax-Free Income Fund, Inc.]
    
Dear Shareholder:      
    
      You are cordially invited to attend the Annual Meeting of Shareholders of
Lord Abbett California Tax-Free Income Fund, Inc. scheduled to be held on June
19, 1996, at 11:00 a.m., at the General Motors Building, 767 Fifth Avenue, New
York, New York.  Your Board of Directors looks forward to greeting those
shareholders who are able to attend.

      At the meeting, in addition to the election of directors and the
appointment of auditors, you will be asked to approve or disapprove a proposal
to reorganize your Fund as a separate series of another Lord Abbett fund.  As a
result, your Fund is expected to benefit from the administrative efficiencies
that should flow from being a series of a larger investment company.

      After the reorganization, if approved, your Fund's portfolio will continue
to be managed by Lord, Abbett & Co. under an investment management agreement
substantially similar to the Fund's current management agreement with Lord,
Abbett & Co. and will be invested under investment policies that have been
changed from those of your Fund to provide greater flexibility and uniformity.
In addition, if reorganized, your Fund will have a somewhat different 12b-1 Plan
and Distribution Agreement that is intended to maintain the Fund's competitive
position.

      The proposed reorganization will be a tax-free reorganization for federal
income tax purposes.  Such proposal is fully described in the enclosed proxy
statement and prospectus.  I encourage you to review the proxy statement and
prospectus for all the details regarding the meeting agenda.

      Your Board of Directors believes the matters proposed in the agenda are in
the best interests of the Fund and its shareholders and unanimously recommends a
vote "for" each proposal.  Regardless of the number of shares you own, it is
important that they be represented and voted.  Accordingly, please sign, date
and mail the enclosed proxy card in the postage paid return envelope.

      Your prompt response will help save the Fund the expense of additional
solicitation.      


                                 Sincerely,

                                 /S/ RONALD P. LYNCH

                                 Ronald P. Lynch
                                 Chairman of the Board
    
April 24, 1996      
<PAGE>
 
               LORD ABBETT CALIFORNIA TAX-FREE INCOME FUND, INC.
                                767 Fifth Avenue
                            New York, New York 10153
             

Notice of Annual Meeting of Shareholders
to be held on June 19, 1996                              April 24, 1996 

Notice is given hereby of an annual meeting of the shareholders of Lord Abbett
California Tax-Free Income Fund, Inc. (the "Reorganized Fund").  The meeting
will be held in the offices of Lord, Abbett & Co., on the 11th floor of The
General Motors Building, 767 Fifth Avenue, New York, New York on Wednesday, June
19, 1996, at 11:00 a.m. for the following purposes and to transact such other
business as may properly come before the meeting and any adjournments thereof.

ITEM 1.  To consider and act upon an Agreement and Plan of Reorganization
         between the California Series (the "Acquiring Fund"), a series of Lord
         Abbett Tax-Free Income Fund, Inc., and the Reorganized Fund providing
         for (a) a reorganization of the Reorganized Fund into the Acquiring
         Fund (the "Reorganization") by means of the transfer of all of the
         assets of the Reorganized Fund to the Acquiring Fund in exchange for
         shares of the Acquiring Fund (to be designated "Class A Shares") and
         the assumption by the Acquiring Fund of all of the liabilities of the
         Reorganized Fund, (b) the distribution of such Class A Shares to the
         shareholders of the Reorganized Fund and (c) the subsequent dissolution
         of the Reorganized Fund. (The investment policies and restrictions of
         the Acquiring Fund have been changed from those of the Reorganized Fund
         to provide greater flexibility in the management of the portfolio of
         the Acquiring Fund and to provide greater uniformity in the investment
         policies and restrictions among the various Lord Abbett-sponsored
         funds.) A vote in favor of this Item 1 will be deemed to be a vote to
         authorize the Reorganized Fund, as the sole shareholder of Class A
         Shares of the Acquiring Fund prior to the Reorganization, to (i)
         approve a proposed distribution plan pursuant to Section 12 of the
         Investment Company Act of 1940, as amended, and Rule 12b-1 thereunder
         applicable to that class; and (ii) approve the proposed investment
         management agreement between the Acquiring Fund and Lord, Abbett & Co.
             
ITEM 2.  In the event the Reorganization is not consummated for any reason:

         (A) To elect directors to serve as members of the Board of Directors of
the Reorganized Fund; and

         (B) To ratify the selection of Deloitte & Touche LLP as the independent
public accountants of the Reorganized Fund for the current fiscal year.



                                        By order of the Board of Directors


                                        Kenneth B. Cutler
<PAGE>
 
             
The Board of Directors has fixed the close of business on March 22, 1996 as the
record date for determination of shareholders of the Reorganized Fund entitled
to notice of and to vote at the meeting.  Shareholders are entitled to one vote
for each share held.  As of March 22, there were 27,691,663 shares of the
Reorganized Fund issued and outstanding.      

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

PLEASE INDICATE YOUR VOTING INSTRUCTIONS ON THE ENCLOSED PROXY CARD.

SIGN, DATE AND RETURN IT IN THE ENVELOPE PROVIDED.

TO SAVE THE COST OF ADDITIONAL SOLICITATIONS, PLEASE MAIL YOUR PROXY PROMPTLY.

- --------------------------------------------------------------------------------
<PAGE>
 
    
                 [Letterhead of Lord Abbett Securities Trust -
                 ---------------------------------------------
                      California Tax - Free Income Trust]


Dear Shareholder:

      You are cordially invited to attend the Special Meeting of Shareholders of
Lord Abbett Securities Trust scheduled to be held on June 19, 1996, at 11:00
a.m., at the General Motors Building, 767 Fifth Avenue, New York, New York.
Your Board of Trustees looks forward to greeting those shareholders who are able
to attend.

      At the meeting, in addition to the appointment of auditors, you will be
asked to approve or disapprove a proposal to combine your Fund with another Lord
Abbett fund which has an investment objective substantially similar to that of
your Fund and has investment policies that have been changed from those of your
Fund to provide greater uniformity among the Lord Abbett-sponsored funds and
greater flexibility in the management of your Fund's portfolio.

      Such proposal, if approved, will eliminate the offering of substantially
identical funds, as well as take advantage of potential economies of scale.  In
addition, the proposed combination will be a tax-free reorganization for federal
income tax purposes.  Such proposal is fully described in the enclosed proxy
statement and prospectus.  I encourage you to review the proxy statement and
prospectus for all the details regarding the meeting agenda.

      Your Board of Trustees believes the matters proposed in the agenda are in
the best interests of the Fund and its shareholders and unanimously recommends a
vote "for" each proposal.  Regardless of the number of shares you own, it is
important that they be represented and voted.  Accordingly, please sign, date
and mail the enclosed proxy card in the postage paid return envelope.  If you
have any questions regarding the meeting agenda or need assistance in voting,
please contact our proxy solicitor, D.F. King & Co., Inc., at 1-800-207-3156.

      Your prompt response will help save the Fund the expense of additional
solicitation.      

                             Sincerely,


                             Ronald P. Lynch
                             Chairman of the Board
    
April 24, 1996      
<PAGE>
 
         LORD ABBETT SECURITIES TRUST--CALIFORNIA TAX-FREE INCOME TRUST
                                767 Fifth Avenue
                            New York, New York 10153

    
Notice to Shareholders of Lord Abbett California                  April 24, 1996
Tax-Free Income Trust (the "Acquired Trust") of a Special
Meeting of Shareholders of Lord Abbett Securities Trust
to be held on June 19, 1996

Notice is given hereby to shareholders of the Acquired Trust of a special
meeting of the shareholders of Lord Abbett Securities Trust.  The meeting will
be held in the offices of Lord, Abbett & Co., on the 11th floor of The General
Motors Building, 767 Fifth Avenue, New York, NY on June 19, 1996, at 11:00 a.m.
for the following purposes and to transact such other business as may properly
come before the meeting and any adjournments thereof.

ITEM 1.  To consider and act upon an Agreement and Plan of Reorganization
         between the Acquired Trust, a series of Lord Abbett Securities Trust,
         and the California Series (the "Acquiring Fund"), a series of Lord
         Abbett Tax-Free Income Fund, Inc., providing for (a) the transfer of
         all of the assets of the Acquired Trust to the Acquiring Fund in
         exchange for shares of a new class of the Acquiring Fund (to be
         designated "Class C Shares") and the assumption by the Acquiring Fund
         of all of the liabilities of the Acquired Trust, (b) the distribution
         of such Class C Shares to the shareholders of the Acquired Trust and
         (c) the subsequent termination of the Acquired Trust. (The investment
         policies and restrictions of the Acquiring Fund have been changed from
         those of the Acquired Trust to provide greater flexibility in the
         management of the portfolio of the Acquiring Fund and to provide
         greater uniformity in the investment policies and restrictions among
         the various Lord Abbett-sponsored funds.) A vote in favor of this Item
         1 will be deemed to be a vote to authorize the Acquired Trust, as the
         sole shareholder of Class C Shares prior to this reorganization, to
         approve a proposed distribution plan pursuant to Section 12 of the
         Investment Company Act of 1940, as amended, and Rule 12b-1 thereunder
         applicable to that class.

ITEM 2.  To ratify the selection of Deloitte & Touche LLP as the independent
         public accountants of Lord Abbett Securities Trust for the current
         fiscal year.
     

                                        By order of the Board of Directors


                                        Kenneth B. Cutler
                                        Vice President and Secretary

    
The Board of Trustees has fixed the close of business on March 22, 1996 as the
record date for determination of shareholders of the Acquired Trust entitled to
notice of and to vote at the meeting.  Shareholders are entitled 
to one vote for each share held.  As of March 22, there were 3,777,254      
<PAGE>
 
    
shares of the Acquired Trust and 138,028,692 shares of Lord Abbett Securities
Trust issued and outstanding.      

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

PLEASE INDICATE YOUR VOTING INSTRUCTIONS ON THE ENCLOSED PROXY CARD.

SIGN, DATE AND RETURN IT IN THE ENVELOPE PROVIDED.

TO SAVE THE COST OF ADDITIONAL SOLICITATIONS, PLEASE MAIL YOUR PROXY PROMPTLY.

- --------------------------------------------------------------------------------
<PAGE>
 
    
           PROXY STATEMENT AND PROSPECTUS DATED APRIL 24, 1996      


                         ACQUISITION OF THE ASSETS OF
             Lord Abbett California Tax-Free Income Fund, Inc. and
                 California Tax-Free Income Trust, a series of
                         Lord Abbett Securities Trust
                 The General Motors Building, 767 Fifth Avenue
                              New York, NY 10153
         
      BY AND IN EXCHANGE FOR CLASS A AND CLASS C SHARES, RESPECTIVELY, OF
                        California Series, a series of
                    Lord Abbett Tax-Free Income Fund, Inc.
                 The General Motors Building, 767 Fifth Avenue
                              New York, NY 10153
             
      This Proxy Statement and Prospectus relates to Class A shares (the "Class
A shares") and Class C shares (the "Class C shares") of the California Series
(the "Acquiring Fund"), a series of Lord Abbett Tax-Free Income Fund, Inc. (the
"Income Fund"), to be issued to, and in exchange for all the assets of,
respectively, Lord Abbett California Tax-Free Income Fund, Inc. (the
"Reorganized Fund") and California Tax-Free Income Trust (the "Acquired Trust"
and, together with the Reorganized Fund and the Acquiring Fund, the "Funds"), a
series of Lord Abbett Securities Trust (the "Securities Trust").   The telephone
number of the principal executive office of each of the Funds is 1-800-426-1130.
In exchange for such assets, the Acquiring Fund will also assume  all of the
liabilities of the Reorganized Fund and the Acquired Trust.  Following receipt
of the Class A shares and the Class C shares, the Reorganized Fund will be
dissolved and the Acquired Trust will be terminated and the Class A shares and
Class C shares will be distributed to the respective shareholders of those
Funds.  The shareholders of the Reorganized Fund and the Acquired Trust are
being asked to vote to approve or disapprove these proposed transactions (with
respect to the Reorganized Fund, the "Fund Reorganization," and with respect to
the Acquired Trust, the "Trust Reorganization," and collectively, the
"Reorganizations"), which are more fully described in this Proxy Statement and
Prospectus.      

      The Reorganized Fund and the Securities Trust are open-end diversified
investment management companies.  The Reorganized Fund and the Acquired Trust
seek as high a level of interest income exempt from federal and California
personal income tax as is consistent with preservation of
    
   ANY SHAREHOLDER HAVING A QUESTION REGARDING THE MEETING AGENDA OR NEEDING
  ASSISTANCE IN VOTING, SHOULD CONTACT THE SHAREHOLDER SERVICING AGENT OF THE
            REORGANIZED FUND, DST SYSTEMS, INC., AT 1-800-821-5129.
                                        
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
       EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
           SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
            COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
                PROSPECTUS.  ANY REPRESENTATION TO THE CONTRARY
                             IS A CRIMINAL OFFENSE.      
<PAGE>
 
    
capital.  The Income Fund is also an open-end diversified investment management
company.  It consists  of nine tax-free income series in addition to the
Acquiring Fund.  The Acquiring Fund is a new series of the Income Fund that will
seek as high a level of interest income exempt from federal and California
personal income tax as is consistent with reasonable risk.  Lord Abbett serves
as investment manager to the Reorganized Fund and the Acquired Trust and will
serve as investment manager of the Acquiring Fund under an investment management
agreement substantially similar to the current investment management agreement
of the Reorganized Fund (see  "Comparative Information about the Funds --
Management Agreements").      

      The Class A shares and the Class C shares will share pro-rata in the
portfolio, income and expenses of the Acquiring Fund, except that each class
will bear the expense of its own distribution and shareholder servicing
arrangements and certain other expenses.  See "Information About the
Reorganizations -- Shares of the Acquiring Fund."  The directors of the
Reorganized Fund believe that the proposed Fund Reorganization will enable
shareholders of the Reorganized Fund to benefit from administrative efficiencies
resulting from its being a series of a larger investment company.  The trustees
of the Acquired Trust believe that the proposed Trust Reorganization will enable
the shareholders of the Acquired Trust to benefit from economies of scale while
continuing to invest in a portfolio of securities managed by Lord Abbett under
an investment objective that is substantially similar to that of the Acquired
Trust.  See "Information About the Reorganizations -- Reasons for the
Reorganizations."
    
      This Proxy Statement and Prospectus sets forth concisely the information
about the Acquiring Fund that shareholders of the Reorganized Fund and Acquired
Trust should know before voting on the Reorganizations.  It should be read and
retained for future reference.  Attached as Exhibits A(1) and (2) to this Proxy
Statement and Prospectus are copies of the Agreements and Plans of
Reorganization (the "Fund Plan" with respect to the Reorganized Fund and the
"Trust Plan" with respect to the Acquired Trust, and collectively, the "Plans")
for the respective Reorganizations of the Reorganized Fund and the Acquired
Trust.  This Proxy Statement and Prospectus is accompanied by the Prospectus of
the Acquiring Fund dated March 20, 1996  (the "Acquiring Fund Prospectus"),
which Prospectus is incorporated by reference herein.  Also incorporated herein
by reference are (a) the Statement of Additional Information dated the date
hereof relating to this Proxy Statement and Prospectus, including the Statement
of Additional Information of the Reorganized Fund dated January 1, 1996, the
Statement of Additional Information of the Securities Trust dated March 1, 1996
and the Statement of Additional Information of the Acquiring Fund dated March
20, 1996, and (b)  the Prospectus of the Reorganized Fund dated January 1, 1996
(the "Reorganized Fund Prospectus") and the Prospectus of the Securities Trust
dated  March 1, 1996 (the "Acquired Trust Prospectus").  Such Statements of
Additional Information and such Prospectuses of the Acquiring Fund and the
Securities Trust are available, upon oral or written request, and at no charge,
from the Acquiring Fund, at its above-noted address or by calling 1-800-874-
3733.      
<PAGE>
 
                               TABLE OF CONTENTS

<TABLE>    
<CAPTION>

<S>                                                                         <C>
MEETINGS OF SHAREHOLDERS OF THE REORGANIZED FUND AND THE
  SECURITIES TRUST........................................................  2

FEE TABLES................................................................  4

ITEM 1. APPROVAL OF THE AGREEMENTS
        AND PLANS OF REORGANIZATION

      SUMMARY OF PROPOSALS................................................  7

      INFORMATION ABOUT THE REORGANIZATIONS............................... 10

      COMPARATIVE INFORMATION ABOUT THE FUNDS............................. 18

      REQUIRED VOTES...................................................... 21

ITEM 2. FOR REORGANIZED FUND SHAREHOLDERS ONLY --
        A. Election of Directors of the Reorganized Fund.................. 22
        B. Ratification or Rejection of Independent Public Accountants.... 28

ITEM 3. FOR ACQUIRED TRUST  SHAREHOLDERS ONLY --
        Ratification or Rejection of Independent Public Accountants....... 28

ADDITIONAL INFORMATION.................................................... 29
</TABLE>     

Exhibit A(1) - Agreement and Plan of Reorganization with respect to the
               Reorganized Fund

         (2) - Agreement and Plan of Reorganization with respect to the
               Acquired Trust

Exhibit B - Proposed Class A 12b-1 Plan
    
Exhibit C - Comparison of Certain Investment Policies and Restrictions      

         
<PAGE>
 
    
                MEETINGS OF SHAREHOLDERS OF THE REORGANIZED FUND
                            AND THE SECURITIES TRUST

      This Prospectus and Proxy Statement is furnished in connection with the
solicitation of proxies by and on behalf of the Board of Directors of the
Reorganized Fund and the Board of Trustees of the Securities Trust to be used at
an Annual Meeting of Shareholders of the Reorganized Fund and a Special Meeting
of Shareholders of Securities Trust and any adjournments thereof.  Such meetings
are to be held at 11:00 a.m. on June 19, 1996, at the offices of Lord Abbett on
the 11th floor of the General Motors Building, 767 Fifth Avenue, New York, NY
10153.  This Prospectus and Proxy Statement and the enclosed proxy card are
first being mailed to shareholders of the Reorganized Fund and the Acquired
Trust on or about April 24, 1996.

      To avoid a need to call an Acquiring Fund shareholders' meeting after the
Reorganizations, the shareholders of the Reorganized Fund are being asked, as
part of their vote on the Fund Plan, to authorize the Reorganized Fund, as the
sole shareholder of the Acquiring Fund before the Fund Reorganization, to (a)
approve a proposed distribution plan pursuant to Section 12 of the Investment
Company Act of 1940, as amended (the "1940 Act"), and Rule 12b-1 thereunder
applicable to the Class A shares, and (b) approve a proposed investment
management agreement between the Acquiring Fund and Lord, Abbett & Co. ("Lord
Abbett") that will be substantially similar to the current investment management
agreement of the Reorganized Fund.  For the same reason, the shareholders of the
Acquired Trust are being asked, as part of their vote on the Trust Plan, to
authorize the Acquired Trust, as the sole Class C shareholder of the Acquiring
Fund before the Trust Reorganization, to approve a proposed distribution plan
that is substantially the same as the current distribution plan of the Acquired
Trust.  A vote in favor of a Reorganization will be deemed also to be a vote to
authorize the Reorganized Fund or the Acquired Trust, as the case may be, to
take such action.

      At the close of business on March 22, 1996 (the "Record Date"), there were
issued and outstanding 27,691,663 shares of the Reorganized Fund, 3,777,254
shares of the Acquired Trust and 138,028,692 shares of the Securities Trust.
Only shareholders of record as of the close of business on the Record Date will
be entitled to notice of, and to vote at, the meetings or any adjournment
thereof.  Shareholders of the Reorganized Fund and the Securities Trust are
entitled to one vote for each share.  The Reorganized Fund is a Maryland
corporation and the Acquired Trust is a series of a Delaware business trust.
Under Maryland and Delaware law, shares owned by two or more persons (whether as
joint tenants, co-fiduciaries or otherwise) will be voted as follows, unless a
written instrument or court order providing to the contrary has been filed with
the Secretary of the Reorganized Fund or the Securities Trust, as the case may
be:  (1) if only one votes, that vote binds all; (2) if more than one votes, the
vote of the majority binds all; and (3) if more than one votes and the vote is
evenly divided, the vote will be cast proportionately.

      If the enclosed form of proxy is properly executed and returned in time to
be voted at the applicable meeting, the proxies named therein will vote the
shares represented by the proxy in accordance with the instructions marked
thereon.  A proxy may be revoked by the signer at any time at or before the
applicable meeting by written notice to the Reorganized Fund or the Securities
Trust, as the case may be, by execution of a later-dated proxy or by voting in
person at the meeting.  Unless revoked, all valid proxies will be voted in
accordance with the specifications thereon or, in the absence of such      

                                       2
<PAGE>
 
    
specifications, FOR approval of the applicable Plan and Reorganization, FOR the
other matter or matters specified in the notice of such meeting and on any other
matters as deemed appropriate.

      Proxies will be solicited by mail.  Additional solicitations may be made
by telephone, facsimile or personal contact by officers or employees of Lord
Abbett and its affiliates.  The Reorganized Fund and the Acquired Trust may also
request brokerage houses, custodians, nominees, and fiduciaries who are
stockholders of record to forward proxy materials to the beneficial owners.
D.F. King & Co. has been retained to assist in the solicitation of proxies.  The
cost of the solicitations will be borne by the Reorganized Fund and the Acquired
Trust, respectively, at an estimated cost of $4,000 for the Reorganized Fund and
$700 for the Acquired Trust.      

      In the event that sufficient votes to approve a Plan are not received by
the meeting date, the persons named as proxies may propose one or more
adjournments of the applicable meeting to permit further solicitation of
proxies.  In determining whether to adjourn a meeting, the following factors may
be considered:  the percentage of votes actually cast, the percentage of
negative votes actually cast and the nature of any further solicitation and any
information to be provided to shareholders with respect to such a solicitation.
Any such adjournment will require an affirmative vote by a majority of the
shares present in person or by proxy and entitled to vote at the meeting.  The
persons named as proxies will vote upon such adjournment after consideration of
the best interests of all shareholders.
    
          If the Fund Plan is not approved by the shareholders of the
Reorganized Fund, or if the Fund Reorganization is not consummated for any other
reason, the Reorganized Fund will continue to engage in business as Lord Abbett
California Tax-Free Income Fund,  Inc.  If the Trust Plan is not approved by the
shareholders of the Acquired Trust, or if the Trust Reorganization is not
consummated for any other reason, the Acquired Trust will continue to engage in
business as California Tax-Free Income Trust, a series of the Securities Trust.
If the Fund Plan is approved by the shareholders of the Reorganized Fund, and
all other conditions to consummation of the Fund Reorganization are satisfied,
the Fund Reorganization will occur regardless of whether the Trust Plan is
approved or the Trust Reorganization is consummated.      

                                       3
<PAGE>
 
                                   FEE TABLES
    
FEE TABLE WITH RESPECT TO FUND REORGANIZATION.  Set forth on the following page
is a summary comparison of the expenses of (a) the shares of the Reorganized
Fund and (b) on a pro-forma basis after giving effect to the Fund
Reorganization, the Class A Shares of the Acquiring Fund (to be issued in the
Fund Reorganization in exchange for the shares of the Reorganized Fund).  The
annual operating expenses shown in the summary comparison for the shares of the
Reorganized Fund are the actual expenses for the fiscal year ended August 31,
1995, and those shown on a pro-forma basis for the Class A shares of the
Acquiring Fund are such actual expenses of the Reorganized Fund adjusted for
estimated changes in the management fee and the Rule 12b-1 plan expenses.  The
example set forth below is not a representation of past or future expenses.
Actual expenses may be greater or less than those shown.      

                                       4
<PAGE>
 
<TABLE>   
<CAPTION>

                                                                          ACQUIRING FUND
SHAREHOLDER TRANSACTION EXPENSES                   REORGANIZED FUND       CLASS A SHARES
(AS A PERCENTAGE OF OFFERING PRICE)                    SHARES               (PRO-FORMA)
- -----------------------------------                ----------------       --------------
<S>                                                     <C>                    <C>
   Maximum Sales Load on Purchases/(1)/..........       4.75%                  4.75%

   Deferred Sales Load /(1)/.....................       None/(2)/              None/(2)/

ANNUAL OPERATING EXPENSES
(AS A PERCENTAGE OF AVERAGE NET ASSETS)

Management Fee...................................       0.40%/(3)/             0.50%/(3)/

Rule 12b-1 Fees..................................       0.26%                  0.27%/(4)/

Other Expenses...................................       0.10%                  0.10%

TOTAL OPERATING EXPENSES.........................       0.76%/(3)/             0.87%/(3)/
</TABLE>     
 
Example:  Assume annual return is 5% and there is no change in the level of
- -------
expenses described above. For every $1,000 invested, with reinvestment of all
distributions, you would pay the following total expenses if you closed your
account after the number of years indicated.

                                     1 YEAR   3  YEARS   5 YEARS   10 YEARS
                                     ------   --------   -------   --------
     REORGANIZED FUND SHARES/(5)/      $55      $71        $88       $137
     ACQUIRING FUND CLASS A SHARES     $56      $74        $93       $150
            (PRO-FORMA)/(5)/
    
/(1)/  Sales "load" is referred to as sales "charge" and "deferred sales load"
       is referred to as "contingent deferred reimbursement charge" throughout
       this Proxy Statement and Prospectus. Investors should be aware that long-
       term Class A shareholders may pay, as a front-end sales charge and under
       the Rule 12b-1 Plan of the Reorganized Fund and under the Rule 12b-1 Plan
       to be applicable to the Class A shares of the Acquiring Fund, more than
       the economic equivalent of the maximum permitted front-end sales charge
       as permitted by certain rules of the National Association of Securities
       Dealers, Inc.      
/(2)/  With respect to shares on which the Reorganized Fund's Rule 12b-1
       distribution fee for purchases of $1 million or more has been paid, and
       Class A shares on which the Acquiring Fund's Rule 12b-1 distribution fee
       will be paid, certain redemptions are subject to a contingent deferred
       reimbursement charge of up to 1% if the redemption occurs within 24
       months after the month of purchase. Holding periods for shares purchased
       prior to the Fund Reorganization will carry over for the purpose of
       determining the applicability of the CDRC to Class A shares. See "12b-1
       Plans" under "Information About the Reorganizations" for a description of
       the proposed 12b-1 Plan for the A shares.
    
/(3)/  Lord Abbett has waived part of its management fee with respect to the
       Reorganized Fund during the past year. The management fee and total
       operating expenses would have been 0.50% and 0.86%, respectively, absent
       such waiver. Lord Abbett has advised the Acquiring Fund that it intends
       to discontinue such waiver following the consummation of the Fund
       Reorganization.
/(4)/  The proposed Rule 12b-1 Plan for the A shares provides for annual fees,
       if approved by the Board of Directors, of up to 0.50% of the net assets
       of the Fund attributable to the Class A shares, comprising a service fee
       of up to 0.25% and a distribution fee of up to 0.25% of the average value
       of the net assets of the Fund attributable to the Class A shares. The 
       pro-forma Rule 12b-1 fees for the Acquiring Fund Class A shares are 
       based on the distribution fee payments authorized by the board. See "12b-
       1 Plans" under "Information About the Reorganizations".      
/(5)/  Based on total actual operating expenses and pro-forma operating expenses
       shown in the table above.
 
The foregoing is provided to assist shareholders of the Reorganized Fund in
understanding the various expenses the holders of shares of the Reorganized Fund
have incurred and that such holders might incur as holders of the Class A shares
following the Fund Reorganization.

                                       5
<PAGE>
 
FEE TABLE WITH RESPECT TO TRUST REORGANIZATION.  Set forth below is a summary
comparison of the expenses of (a) the shares of the Acquired Trust and (b) on a
pro-forma basis after giving effect to the Trust Reorganization, the Class C
shares of the Acquiring Fund (to be issued in the Trust Reorganization in
exchange for the shares of the Acquired Trust).  The annual operating expenses
shown in the summary comparison for the shares of the Acquired Trust are the
actual expenses for the fiscal year ended October 31, 1995, and those shown on a
pro-forma basis for the Class C shares of the Acquiring Fund are the actual
expenses of the Reorganized Fund for the fiscal year ended August 31, 1995,
adjusted for estimated changes in the management fee and the Rule 12b-1 plan
expenses.  The example set forth below is not a representation of past or future
expenses.  Actual expenses may be greater or less than those shown.

<TABLE>
<CAPTION>

                                                                                ACQUIRING FUND
SHAREHOLDER TRANSACTION EXPENSES                          ACQUIRED TRUST        CLASS C SHARES
(AS A PERCENTAGE OF OFFERING PRICE)                           SHARES              (PRO-FORMA)
- -----------------------------------                       --------------        --------------
<S>                                                             <C>                 <C>
  Maximum Sales Load on Purchases/(1)/...................       None/(2)/           None/(2)/


  Deferred Sales Load /(1)/..............................       1.00%/(3)/          1.00%/(3)/

ANNUAL OPERATING EXPENSES
(AS A PERCENTAGE OF AVERAGE NET ASSETS)

Management Fee...........................................       0.00%/(4)/          0.50%/(4)/

Rule 12b-1 Fees..........................................       0.93%/(2)/          0.93%/(2)/

Other Expenses...........................................       0.00%/(4)/          0.10%

TOTAL OPERATING EXPENSES.................................       0.93%/(4)/          1.53%
</TABLE>

Example:  Assume each Fund's annual return is 5% and there is no change in the
- -------
level of expenses described above. For every $1,000 invested, with reinvestment
of all distributions, you would pay the following total expenses if you closed
your account after the number of years indicated.

                                     1 YEAR   3 YEARS   5 YEARS   10 YEARS
                                     ------   -------   -------   --------
     ACQUIRED TRUST SHARES/(5)/        $ 9      $30       $51        $114
     ACQUIRING FUND CLASS C            $16      $48       $83        $183
     SHARES
     (PRO-FORMA)/(5)/
 
/(1)/  Sales "load" is referred to as sales "charge" and "deferred sales load"
       is referred to as "contingent deferred reimbursement charge" throughout
       this Proxy Statement and Prospectus.
/(2)/  Although the Acquired Trust does not, and the Acquiring Fund will not
       with respect to the Class C shares, charge a front-end sales charge,
       investors should be aware that long-term shareholders may pay, under the
       Rule 12b-1 Plan of the Acquired Trust and under the Rule 12b-1 Plan to be
       applicable to the Class C shares of the Acquiring Fund (which pays and
       will pay annual 0.25% service and 0.75% distribution fees), more than the
       economic equivalent of the maximum front-end sales charge as permitted by
       certain rules of the National Association of Securities Dealers, Inc.
/(3)/  Redemptions of the Acquired Trust shares are, and redemptions of the
       Class C shares will be, subject to a 1% contingent deferred reimbursement
       charge if the redemption occurs before the first anniversary of the share
       purchase. Holding periods for shares purchased prior to the Trust
       Reorganization will carry over for the purpose of determining the
       applicability of the CDRC to Class C shares.
/(4)/  Lord Abbett has waived its management fee and subsidized expenses with
       respect to the Acquired Trust during the past year. The management fee,
       other expenses and total operating expenses would have been 0.50%, 0.24%
       and 1.67%, respectively, absent such waiver and subsidy. Lord Abbett has
       advised the Acquiring Fund that it intends neither to waive its
       management fee nor to subsidize expenses following the consummation of
       the Trust Reorganization.
/(5)/  Based on total actual operating expenses and pro-forma operating expenses
       shown in the table above. The foregoing is provided to assist
       shareholders of the Acquired Trust in understanding the various expenses
       the holders of shares of the Acquired Trust have incurred and that such
       holders might incur as holders of the Class C shares following the Trust
       Reorganization.

                                       6
<PAGE>
 
         
                    ITEM 1. - APPROVAL OF THE AGREEMENTS AND
                            PLANS OF REORGANIZATION
                                        
                              SUMMARY OF PROPOSALS

      The following is a summary of certain information contained elsewhere or
incorporated by reference in this Proxy Statement and Prospectus and is
qualified in its entirety by reference to such information.
    
OVERVIEW OF PROPOSED REORGANIZATIONS.  The Plans provide for the transfer to the
Acquiring Fund of all of the assets of the Reorganized Fund and the Acquired
Trust in exchange for Class A shares and Class C shares, respectively, and the
assumption by the Acquiring Fund of all of the liabilities of those respective
Funds.  The Class A shares and Class C shares will then be distributed to the
respective shareholders of the Reorganized Fund and the Acquired Trust and those
Funds will be dissolved and terminated.  As a result of the Reorganizations,
each shareholder of the Reorganized Fund and each shareholder of the Acquired
Trust will become an owner of that number of full and fractional Class A shares
or Class C shares, as the case may be, having an aggregate net asset value equal
to the aggregate net asset value of his or her shares of the Reorganized Fund or
the Acquired Trust, as of the close of business on the date of the
Reorganizations.  Consummation of the Fund Reorganization is subject to the
approval of the Reorganized Fund's shareholders and other conditions.  It is not
subject to the consummation of the Trust Reorganization.  Consummation of the
Trust Reorganization is subject to the approval of the Acquired Trust's
shareholders, the prior consummation of the Fund Reorganization and other
conditions.      

      To avoid a need to call an Acquiring Fund shareholders' meeting after the
Reorganizations, shareholders of the Reorganized Fund are being asked to
authorize the Reorganized Fund, as the sole Class A shareholder of the Acquiring
Fund before the Fund Reorganization, to (a) approve the proposed distribution
plan for the Class A shares, and (b) approve the investment advisory agreement
for the Acquiring Fund, and shareholders of the Acquired Trust are being asked
to authorize the Acquired Trust, as the sole Class C shareholder of the
Acquiring Fund prior to the Trust Reorganization, to approve the proposed
distribution plan for the Class C shares.  A vote in favor of a Reorganization
will be deemed also to be a vote to authorize the Reorganized Fund or the
Acquired Trust, as the case may be, to take such action.

      The directors of the Reorganized Fund believe that it will be advantageous
for the Reorganized Fund to reorganize itself into a series of the Income Fund
rather than to continue as a separate corporation.  The directors believe that
this will enable the Reorganized Fund to benefit from administrative
efficiencies resulting from its being a series of a larger investment company.
The trustees of the Acquired Trust believe that the proposed Trust
Reorganization will enable the shareholders of the Acquired Trust to benefit on
a long-term basis from economies of scale while continuing to invest in a
portfolio of securities managed by Lord Abbett under a substantially similar
investment objective.  See "Information About the Reorganizations -- Reasons for
Reorganizations" for additional information about the reasons for the
Reorganizations.

                                       7
<PAGE>
 
BUSINESSES OF THE FUNDS.  The Reorganized Fund is a diversified, open-end
management investment company incorporated under the laws of Maryland on May 21,
1985.  It has a single class of shares with equal rights as to voting,
dividends, assets and liquidation.   As of December 31, 1995, the Reorganized
Fund's net assets were approximately $302 million.

      The Acquired Trust is a non-diversified series of the Securities Trust, an
open-end management investment company organized as a Delaware business trust
under an Agreement and Declaration of Trust dated February 26, 1993.  The
Securities Trust offers ten series, one of which is the Acquired Trust, each
consisting of one class of shares.  The Acquired Trust commenced investment
operations on October 1, 1993.  As of December 31, 1995, the Acquired Trust's
net assets were approximately $17 million.

      The Acquiring Fund is a non-diversified series of the Income Fund, an
open-end management investment company incorporated under the laws of Maryland
on December 27, 1983.  Currently, the Income Fund consists of ten series, one of
which is the Acquiring Fund, each consisting of one class of shares.  The
Acquiring Fund will conduct no investment operations prior to the consummation
of the Fund Reorganization.
    
INVESTMENT OBJECTIVES AND POLICIES OF THE FUNDS.  The Reorganized Fund and the
Acquired Trust have identical investment objectives: to seek as high a level of
interest income exempt from federal and California personal income tax as is
consistent with preservation of capital.  The objective of the Acquiring Fund is
substantially similar:  to seek as high a level of interest income exempt from
federal and California personal income tax as is consistent with reasonable
risk.  For this purpose, "reasonable risk" means that the Acquiring Fund over
time will have a volatility approximating the Lehman Brothers Current Coupon
Long Index.

      The Reorganized Fund and the Acquired Trust also have substantially
similar investment policies and restrictions.  The investment policies and
restrictions of the Acquiring Fund have been simplified and made less
restrictive compared to those of the Reorganized Fund and the Acquired Trust in
order to provide greater flexibility in managing the investment portfolio of the
Acquiring Fund and to provide greater uniformity in the investment policies and
restrictions among the various Lord Abbett-sponsored funds.  Most importantly, a
number of the investment policies and restrictions that are classified as
fundamental for the Reorganized Fund and the Acquired Trust are classified as
non-fundamental for the Acquiring Fund.  See "Comparative Information About the
Funds -- Investment Objectives, Policies and Restrictions."      

      The portfolios of the Reorganized Fund and the Acquired Trust are expected
to be suitable for the Acquiring Fund, and so no significant realignment of
those portfolios is expected in connection with the Reorganizations.

PURCHASES AND EXCHANGES.  Shares of the Reorganized Fund and the Acquired Trust
are, and Class A and C Shares will be, available through certain authorized
dealers at the public offering price, which is the net asset value per share
plus, in the case of Class A shares, a one-time sales charge.  Shares of the
Acquired Trust are, and Class C shares will be, subject to a contingent deferred
reimbursement charge equal to 1% of the lower of their cost or the net asset
value if redeemed for cash before the first anniversary of their purchase.  See
"Information About the Reorganizations -- Shares of the Acquiring Fund."
Shareholders of the Reorganized Fund may now exchange their shares for shares of
up to 24 

                                       8
<PAGE>
 
other funds and series in the Lord Abbett family of funds, and shareholders of
the Acquired Trust may now exchange their shares for shares of the nine other
series of the Securities Trust and for shares of Lord Abbett U.S. Government
Securities Money Market Fund, Inc. It is expected that holders of Class A shares
will be able to exchange their shares for Class A shares of up to 25 other funds
and series managed by Lord Abbett and that holders of Class C shares will be
able to exchange their shares for Class C shares of up to 13 of such funds and
series. Each exchange represents a sale of shares for which a shareholder may
have to recognize a gain or loss under Federal income tax provisions.

RULE 12b-1 PLANS.  The Reorganized Fund has adopted a plan pursuant to Section
12(b) of the 1940 Act and Rule 12b-1 thereunder (a "Rule 12b-1 Plan"), under
which it pays Lord Abbett (1) an annual service fee (payable quarterly) of 0.25%
of the average daily net asset value of shares sold, or attributable to shares
sold, by dealers and (2) a one-time 1% distribution fee, at the time of sale, on
all shares sold at the $1 million level by dealers, including sales qualifying
at such level under the rights of accumulation and statement of intention
privileges described in the Fund's prospectus in effect at such time, subject to
a contingent deferred reimbursement charge for up to 24 months.  Lord Abbett is
required to pay these service and distribution fees to dealers to provide
additional incentives for the dealers (a) to provide continuing information and
investment services to their shareholder accounts and otherwise to encourage
their accounts to remain invested in the Reorganized Fund and (b) to sell its
shares.
    
      As part of the Fund Reorganization, the Acquiring Fund is adopting a new
Rule 12b-1 Plan applicable to the Class A shares that will be similar to the
Reorganized Fund's Rule 12b-1 Plan.  The principal change is that under the
proposed new Rule 12b-1 Plan for the Class A shares the Board of Directors will
be able to increase the amount of the total annual fee up to 0.50% of the Fund's
average annual net assets.  For a fuller description of the current Rule 12b-1
Plan of the Reorganized Fund and of the proposed new Rule 12b-1 Plan for the A
shares of the Acquiring Fund, see "Information About the Reorganizations -- Rule
12b-1 Plans."

      The Acquired Trust has adopted a Rule 12b-1 Plan under which it pays
service and distribution fees at the time shares are sold not to exceed 1% of
the net asset value of such shares and at each quarter-end after the first
anniversary of the sale of shares at an annual rate not to exceed 1% of the net
asset value of such shares then outstanding.  As part of the Trust
Reorganization, the Acquiring Fund is adopting a Rule 12b-1 Plan applicable to
the Class C shares that will be substantially the same as the Acquired Trust's
Rule 12b-1 Plan, except as noted below under "Information About the
Reorganizations -- Rule 12b-1 Plans."      

DIVIDEND POLICIES AND OPTIONS.  The Reorganized Fund and the Acquired Trust
distribute net investment income monthly as dividends.  They also may pay
supplemental dividends and capital gains distributions in December or January.
The Reorganized Fund also pays capital gains distributions in September.  The
shareholders of each such Fund may reinvest such dividends and distributions in
additional shares at net asset value or take such amounts in cash.  The
Acquiring Fund intends to continue these same practices, except that it does not
expect to pay any capital gains distributions in September or January.

REDEMPTION PROCEDURES.   The redemption procedures of the Reorganized Fund and
the Acquired Trust are substantially the same.  The Acquiring Fund will follow
the redemption procedures of the Reorganized Fund, which are described in the
Acquiring Fund Prospectus under "Redemptions."

                                       9
<PAGE>
 
TAX CONSIDERATIONS.  The consummation of each Reorganization is subject to
receipt of an opinion of counsel substantially to the effect that, among other
things, such Reorganization will not cause a gain or loss to be recognized by
the Reorganized Fund or the Acquired Trust, as the case may be, or its
shareholders for federal income tax purposes.  See "Information about the
Reorganizations--Federal Income Tax Considerations."
    
RISK FACTORS.  Because of the similarities in the investment objectives of the
Funds, Lord Abbett believes that the relative risks involved in investing in the
Funds can be considered similar. However, the investment policies and
restrictions of the Acquiring Fund have been made less restrictive compared to
those of the Reorganized Fund and the Acquired Trust in order to provide greater
flexibility in the future management of the investment portfolio of the
Acquiring Fund and to provide greater uniformity in the investment policies and
restrictions among the various Lord Abbett-sponsored funds. If the Acquiring
Fund were to take to any significant extent the actions permitted by these less
restrictive policies and restrictions, a result not now anticipated, the risks
of investing in the Acquiring Fund could be greater than those involved in
investing in the Reorganized Fund and the Acquired Trust. See "Comparative
Information About the Funds -- Investment Objectives, Policies and Restrictions"
below.      


                     INFORMATION ABOUT THE REORGANIZATIONS
    
THE PLANS.  On July 12, 1996, assuming the conditions referred to below are
satisfied, the Reorganized Fund will transfer all of its assets to the Acquiring
Fund (the date of such transfer is referred to herein as the "Closing Date") in
exchange for (i) Class A shares of the Acquiring Fund having an aggregate net
asset value equal to the aggregate value of the assets, less liabilities, of the
Reorganized Fund and (ii) the assumption by the Acquiring Fund of all the
liabilities of the Reorganized Fund.  The Reorganized Fund will distribute as of
the Closing Date such Class A shares pro-rata to its shareholders of record,
determined as of the close of business on the Closing Date, in redemption and
cancellation of their shares of the Reorganized Fund.  Approval and consummation
of the Trust Reorganization are not conditions to the consummation of the Fund
Reorganization.  Assuming the other conditions referred to below are satisfied,
the Fund Reorganization will occur regardless of whether the Trust
Reorganization is expected to occur.

      Upon the consummation of the Fund Reorganization and on the Closing Date,
assuming the other conditions referred to below are satisfied, the Acquired
Trust will transfer all of its assets to the Acquiring Fund in exchange for (i)
Class C shares of the Acquiring Fund having an aggregate net asset value equal
to the aggregate value of the assets, less liabilities, of the Acquired Trust
and (ii) the assumption by the Acquiring Fund of all the liabilities of the
Acquired Trust.  The Acquired Trust will distribute as of the Closing Date such
Class C shares pro-rata to its shareholders of record, determined as of the
close of business on the Closing Date, in redemption and cancellation of their
shares of the Acquired Trust.      

      The net asset values of the Class A shares and Class C shares and the
values of the assets and the amounts of the liabilities of the Reorganized Fund
and the Acquired Trust will be determined as of the Closing Date in accordance
with the valuation procedures set forth in the Acquiring Fund's Articles of
Incorporation (see "Purchases" in the Acquiring Fund Prospectus).  The valuation
procedures used by the Acquiring Fund are the same as those used by the
Reorganized Fund and the Acquired Trust.

                                       10
<PAGE>
 
    
      The obligations of each of the Reorganized Fund and the Acquired Trust to
consummate the Reor ganization to which it is to be a party are subject to the
satisfaction of certain conditions precedent, including (a) approval and
authorization of each Reorganization by the vote of not less than a majority of
the shares of the Reorganized Fund, outstanding and entitled to vote, or the
vote of a majority of the shares of the Acquired Trust voted in the matter if a
quorum is present, as the case may be, (b) receipt of a favorable ruling from
the Internal Revenue Service to the effect that the issuance of various classes
of shares by the Acquiring Fund will not result in dividends or distributions of
the Acquiring Fund constituting "preferential dividends" under the Internal
Revenue Code of 1986, as amended (the "Code"), (c) receipt of a favorable
opinion of legal counsel as to the federal income tax consequences of the
proposed transaction as described below under "Federal Income Tax
Considerations", and (d) approval by the shareholders of the Income Fund of an
amendment to its Articles of Incorporation authorizing the creation of
additional classes of shares.      

      The foregoing summary of the Plans does not purport to be complete, and is
subject in all respects to the provisions of, and is qualified in its entirety
by reference to, the Plans, copies of which are attached as Exhibits A(1) and
(2).
    
REASONS FOR THE REORGANIZATIONS.  The Board of Directors of the Reorganized Fund
and the Board of Trustees of the Securities Trust, as well as the Board of
Directors of the Income Fund, including in each case a majority who are not
"interested persons" (as defined in the 1940 Act) of any of the Funds or of Lord
Abbett, approved the respective Plans and Reorganizations on March 14, 1996.  In
this connection, the boards determined that participation in the proposed
Reorganizations is in the best interests of the shareholders of the respective
Funds and that the interests of existing shareholders of the Funds will not be
diluted as a result of their respective Reorganizations.  In doing so, the board
of the Reorganized Fund considered the administrative efficiencies that should
flow to the Reorganized Fund as a result of its being a series of a larger
investment company.  In addition, the boards of the Funds considered the
estimated expenses to be incurred by the Funds in connection with the
Reorganizations and several other factors, including (a) that the shareholders
of the Acquired Trust are expected to benefit on a long-term basis from
economies of scale as shareholders of the larger Acquiring Fund following the
Reorganizations, while continuing to invest in a portfolio of securities managed
by Lord Abbett under a substantially similar investment objective, and (b) that
the implementation of a multi-class fund structure for the Acquiring Fund is
expected to (i) enable investors in the Acquiring Fund to choose the
distribution option that best suits their individual situations, (ii) facilitate
distribution of the Acquiring Fund's shares, and (iii) maintain the competitive
position of the Acquiring Fund in relation to other funds that have implemented
or are seeking to implement similar distribution arrangements.      

      The directors of the Income Fund, the trustees of the Securities Trust and
the directors of the Reorganized Fund are the same individuals.

SHARES OF THE ACQUIRING FUND.  On or before the Closing Date, the Acquiring Fund
will have two classes of shares, Class A shares (to be received by the
shareholders of the Reorganized Fund in the Fund Reorganization) and Class C
shares (to be received by the shareholders of the Acquired Trust in the Trust
Reorganization).  Each share of the Acquiring Fund, regardless of class, will
share pro-rata (based on net asset value) in the portfolio and income of the
Acquiring Fund and in the Acquiring Fund's expenses, except for differences in
expenses resulting from different Rule 12b-1 Plans for the various classes and
certain other class specific expenses.  See "Rule 12b-1 Plans" below.

                                       11
<PAGE>
 
      After the Fund Reorganization, Class A shares will be offered to the
public at net asset value subject to an initial sales charge identical to the
sales charge currently imposed on sales of the Reorganized Fund shares, as
follows:

<TABLE>
<CAPTION>
                                                                                       
                             SALES CHARGE AS A                                         
                               PERCENTAGE OF:         DEALER'S CON-
                        ---------------------------
                                                       CESSION AS A                                 
                                                      PERCENTAGE OF      TO COMPUTE                 
                                         NET AMOUNT      OFFERING       OFFERING PRICE,
  SIZE OF INVESTMENT    OFFERING PRICE    INVESTED        PRICE*         DIVIDE NAV BY 
- ---------------------------------------------------------------------------------------
<S>                     <C>              <C>          <C>              <C>
Less than $50,000                 4.75%        4.99%            4.00%             .9525
- ---------------------------------------------------------------------------------------
$50,000 to $99,999                4.75%        4.99%            4.25%             .9525
- ---------------------------------------------------------------------------------------
$100,000 to $249,999              3.75%        3.90%            3.25%             .9625
- ---------------------------------------------------------------------------------------
$250,000 to $499,999              2.75%        2.83%            2.50%             .9725
- ---------------------------------------------------------------------------------------
$500,000 to $999,999              2.00%        2.04%            1.75%             .9800
- ---------------------------------------------------------------------------------------
$1,000,000 or more      No Sales Charge**                       1.00%            1.0000
- ---------------------------------------------------------------------------------------
</TABLE>

    
* Lord Abbett may, for specified periods, allow dealers to retain the full sales
  charge for sales of shares during such periods, or pay an additional
  concession to a dealer who, during a specified period, sells a minimum dollar
  amount of the Acquiring Fund's shares and/or shares of other Lord Abbett-
  sponsored funds. In some instances, such additional concessions will be
  offered only to certain dealers expected to sell significant amounts of
  shares. Lord Abbett may, from time to time, implement promotions under which
  Lord Abbett will pay a fee to dealers with respect to certain purchases not
  involving the imposition of a sales charge. Additional payments may be paid
  from Lord Abbett's own resources and will be made in the form of cash or, if
  permitted, non-cash payments. The non-cash payments will include business
  seminars at resorts or other locations, including meals and entertainment, or
  the receipt of merchandise. The cash payments will include payment of various
  business expenses of the dealer.      

**As disclosed in the Acquiring Fund Prospectus, other sales in certain
  categories are made at net asset value without a sales charge.
    
      Subject to some exceptions, Class A shares sold without any sales charge
will be subject to a contingent deferred reimbursement charge (a "CDRC") of up
to 1% of the lower of their cost or their net asset value if they are redeemed
from the Lord Abbett-sponsored family of funds within 24 months after the month
of purchase.  See "Rule 12b-1 Plans" below.  Holding periods for shares
purchased prior to the Fund Reorganization will carry over for the purpose of
determining the applicability of the CDRC to Class A shares.      

      After the Trust Reorganization, Class C shares will be offered at net
asset value without an initial sales charge, but if redeemed for cash before the
first anniversary of their purchase, will be subject to a CDRC equal to 1% of
the lower of their cost or then net asset value.  Holding periods for shares
purchased prior to the Trust Reorganization will carry over for the purpose of
determining the applicability of the CDRC to Class C shares.

                                       12
<PAGE>
 
      After the Closing Date, the Acquiring Fund may create and issue one or
more classes of shares in addition to the Class A and C shares.

      Shares of all classes of the Acquiring Fund will vote together on all
matters affecting the Acquiring Fund, except for matters, such as approval of a
Rule 12b-1 plan, affecting only a particular class or classes.  Shares of the
Acquiring Fund will vote together with shares of other series of Income Fund on
all matters affecting the Income Fund, except for matters, such as approval of
an investment management agreement, affecting only one or more particular
series.  All shares voting on a matter will have identical voting rights.
All issued shares of the Acquiring Fund will be fully paid and non-assessable,
and shareholders will have no preemptive or other right to subscribe to any
additional shares.  Shares of all classes of the Acquiring Fund will have the
same rights and be subject to the same limitations with respect to dividends,
redemptions and liquidation except for differences resulting from class-specific
Rule 12b-1 plans and related service plans and certain other class-specific
expenses.
    
RULE 12b-1 PLANS.  Class A Rule 12b-1 Plan.  As part of the Fund Reorganization,
the Acquiring Fund is adopting a Rule 12b-1 plan applicable to the Class A
shares (the "Class A 12b-1 Plan") that will be similar to the plan currently in
effect for the Reorganized Fund, but with several changes as described below.  A
copy of the Class A 12b-1 Plan is attached as Exhibit B to this Proxy Statement
and Prospectus. Under the Reorganized Fund's current plan (except as to certain
accounts for which tracking data is not available), the Fund pays dealers
through Lord Abbett (1) an annual service fee (payable quarterly) of 0.25% of
the average daily net asset value of shares sold, or attributable to shares
sold, by dealers and (2) a one-time 1% distribution fee, at the time of sale, on
all shares sold at the $1 million level by dealers, including sales qualifying
at such level under the rights of accumulation and statement of intention
privileges described in the Reorganized Fund's prospectus in effect at such
time. These service and distribution fees provide additional incentives for
dealers (a) to provide continuing information and investment services to their
shareholder accounts and otherwise to encourage their accounts to remain
invested in the Reorganized Fund and (b) to sell shares of the Reorganized Fund.
     
      Under the current plan of the Reorganized Fund, holders of shares on which
the 1% distribution fee has been paid are required to pay to the Reorganized
Fund a CDRC, or contingent deferred reimbursement charge, of 1% of the original
cost or the then net asset value, whichever is less, of such shares if they are
redeemed out of the Lord Abbett-sponsored family of funds on or before the end
of the twenty-fourth month after the month in which the purchase occurred.  (An
exception is made for certain redemptions by tax-qualified plans under Section
401 of the Internal Revenue Code due to plan loans, hardship withdrawals, death,
retirement or separation from service with respect to plan participants.)  If
the shares are exchanged into another Lord Abbett fund and are thereafter
redeemed out of the Lord Abbett family on or before the end of such twenty-
fourth month, the charge is collected for the Reorganized Fund by the other
fund.  The Reorganized Fund collects such a charge for other Lord Abbett-
sponsored funds in a similar situation.

      Set forth below is a description of the principal changes to be effected
under the proposed Class A 12b-1 Plan:
    
      (a) Distribution Fees.  The Board of Directors of the Income Fund will be
          -----------------                                                    
authorized under the Class A 12b-1 Plan, without further shareholder vote, to
increase the amount of distribution fees up to 0.25% of the average annual net
assets attributable to the Class A shares (the annual distribution and      

                                       13
<PAGE>
 
    
service fees could total 0.50% of such average net assets if approved by the
Board of Directors). This increased spending limit is intended primarily to
permit the trustees to increase the amount to be spent for distribution to meet
changing sales competition. The directors believe it is desirable to be able to
make these changes without further shareholder approval because additional
shareholder meetings would be costly to the Acquiring Fund and its shareholders
and the time required for such meetings could delay the implementation of
advantageous changes. The Board of Directors will approve additional changes
under this increased authority only if a majority of the directors who are not
"interested persons" of the Income Fund within the meaning of the 1940 Act and
who will have no direct or indirect financial interest in the operations of the
Class A 12b-1 Plan or in any agreements related thereto conclude in their
business judgment that there is a reasonable likelihood that the increase will
benefit the Acquiring Fund and its shareholders. 

      The one-time 1% distribution fee, payable at the time of certain sales as
described above, is to be charged against the 0.25% permitted annual
distribution fee.  During the Reorganized Fund's last fiscal year, payments of
the one-time 1% distribution fee under that Fund's Rule 12b-1 plan totaled 0.01%
of the Reorganized Fund's average net assets.  Subject to approval of the Fund
Reorganization by the shareholders of the Reorganized Fund, the Board of
Directors of the Income Fund has authorized the Acquiring Fund to pay this one-
time distribution fee with respect to sales of Class A shares, subject to three
changes:  First, the payments will be made in connection with sales to
          -----                                                       
retirement plans with 100 or more eligible employees, in addition to sales at
the $1 million level as under the Reorganized Fund's 12b-1 plan; Second, the
                                                                 ------     
payments will be reduced as follows:  1.0% of the first $5 million, 0.55% of the
next $5 million, 0.50% of the next $40 million and 0.25% over $50 million of
shares sold to a retirement plan or other qualifying purchaser within a 12-month
period (beginning when the first purchase is made at net asset value); and
Third, the payments will be made to institutions and persons permitted by
- -----                                                                    
applicable law and/or rules to receive such payments ("Authorized
Institutions"), rather than just to dealers as is the case under the Reorganized
Fund's Rule 12b-1 plan.      

      Subject to such approval of the Fund Reorganization, the Income Fund's
Board of Directors has authorized the Acquiring Fund to pay, as an additional
distribution fee, a modest supplemental payment to dealers who have accounts
comprising a significant percentage of the Acquiring Fund's Class A share
assets, having a lower than average redemption rate and who have a satisfactory
program for the promotion of Class A shares.  Any such payments will be 0.10%
per annum of the average assets of the Acquiring Fund represented by the Class A
share accounts of qualifying dealers.  This supplemental payment is intended by
the Board of Directors to enhance the Acquiring Fund's relationships with those
dealers most likely to have a significant impact on the growth of the Class A
shares.

      (b) Service Fees.  Service fee payments, which are to be continued under
          ------------                                                        
the proposed Class A 12b-1 Plan at an annual rate of 0.25% of the average daily
net asset value of the Class A shares could be made to all Authorized
Institutions (institutions and persons permitted by applicable law and/or rules
to receive such payments), rather than just to dealers as is the case under the
Reorganized Fund's plan.

      (c) Use of Payments by Lord Abbett.  Lord Abbett will be permitted to use
          ------------------------------                                       
payments received under the Class A 12b-1 Plan to provide continuing services to
shareholder accounts not serviced by Authorized Institutions and, with board
approval, to finance any activity which is primarily intended to result in the
sale of Class A shares.  Any such payments to finance activities primarily
intended to 

                                       14
<PAGE>
 
result in the sale of Class A shares would be subject to the overall ceiling of
0.25% for annual distribution fees.
    
      (d) CDRC.  The Board of Directors of the Income Fund has approved a CDRC
          ----                                                                
applicable to the Class A 12b-1 shares substantially similar to the CDRC payable
under the Rule 12b-1 Plan of the Reorganized Fund, except that no CDRC would be
payable in connection with redemptions by retirement plans (not just those
qualified under Section 401 of the Internal Revenue Code) attributable to any
benefit payment.  In addition, no CDRC would apply if the plan sponsor requested
a redemption to correct an excess contribution in order to comply with
applicable IRS rules. Because CDRC payments will be made directly to the
Acquiring Fund, they will have the effect of reducing the amount of the
distribution fees paid by the Acquiring Fund for the purpose of complying with
the overall ceiling of 0.25% for annual distribution fees. As in the case of the
specific distribution fees authorized by the Board of Directors of the Income
Fund, the CDRC authorized from time to time by the board for the Class A shares
will be described in the then current prospectus of the Income Fund.

      If the supplemental payment to dealers, the revised one-time distribution
fee and the other changes described above had been in effect for the Reorganized
Fund's last fiscal year, it is estimated that, in the aggregate, they would have
increased the expense ratio of the Reorganized Fund from 0.76% to approximately
0.77%, a difference of 0.01%.      

      (e) Lord Abbett Distributor.  The other party to the Class A 12b-1 Plan is
          -----------------------                                               
to be Lord Abbett Distributor LLC, a New York limited liability company, to be
formed as a subsidiary of Lord Abbett ("Lord Abbett Distributor"), rather than
Lord Abbett. Lord Abbett Distributor is to take on all the underwriting
functions currently performed directly by Lord Abbett.

      The Class A 12b-1 Plan was approved on March 14, 1996 by the directors of
the Income Fund, including a majority of the directors who are not "interested
persons" of the Income Fund within the meaning of the 1940 Act and who will have
no direct or indirect financial interest in the operations of the Class A 12b-1
Plan or in any agreements related thereto.  In considering whether to approve
the Class A 12b-1 Plan, the directors considered, among other things, the
factors set forth below:

    (i)  Flexibility in Adapting Distribution Fees to Meet Industry-Wide
         ---------------------------------------------------------------
Changes.  During the last several years, there has been significantly increased
competition and pricing experimentation in the mutual fund industry.  As the
pace of change increases, the Board of Directors believes it will be useful to
be able to respond more quickly to marketplace pressures, and to change in
appropriate cases the amount of the Class A 12b-1 distribution fees to be paid,
without unnecessarily burdening the shareholders with the costs of additional
proxy solicitations.  The directors believe that the increased distribution fees
described above are good examples of the desirability of this flexibility.
Based on advice received from Lord Abbett, the decision by the board to approve
the payment of distribution fees in connection with sales to retirement plans
with 100 or more eligible employees will enable the Class A shares to compete
more effectively in this growing and important market.  The 0.10% per annum
supplemental payments to dealers who meet certain criteria will permit the
Acquiring Fund to enhance relationships with those dealers most likely to have a
significant impact on the growth of the Class A shares.

                                       15
<PAGE>
 
   (ii)  Expanding Categories of Persons Eligible to Receive Payments.  The
         ------------------------------------------------------------      
current Rule 12b-1 Plan of the Reorganized Fund limits payments thereunder to
dealers selling fund shares. Since that plan was adopted, different methods of
distribution, using different entities, have developed in the industry.  The
Board of Directors sees no reason to limit arbitrarily the categories of persons
eligible to receive payments under the proposed plan, and believes that the
availability of payments under the plan will induce such other entities to
invest in Class A shares.

   (iii)  Flexibility in Distributor's Use of Payments.  Lord Abbett has advised
          --------------------------------------------                          
the Board of Directors that allowing Lord Abbett Distributor to retain fees
received from the Fund to (i) provide continuing information and investment
services to shareholder accounts and (ii) finance, with board approval, any
activity which is primarily intended to result in the sale of Class A shares
will provide useful flexibility and will be in line with common practice in the
industry.

      Prior to the Fund Reorganization, the Reorganized Fund will purchase one
Class A share, and as sole shareholder of the Acquiring Fund, will approve the
Class A 12b-1 Plan prior to the class being issued to the Reorganized Fund in
the Fund Reorganization.  A vote in favor of the Fund Reorganization will be
deemed also to be a vote to authorize the Reorganized Fund to take such action.
    
      Class C Rule 12b-1 Plan.  The Acquiring Fund is adopting a Rule 12b-1 Plan
for the Class C shares (the "Class C 12b-1 Plan") substantially the same as the
plan currently in effect for the Acquired Trust, except as described below.  The
Acquired Trust's plan provides for payments to dealers through Lord Abbett of
distribution and service fees (a) at the time shares are sold, not to exceed
0.75% and 0.25%, respectively, of the net asset value of the shares sold and (b)
at the end of the quarter following the first anniversary of the sale of shares,
and quarterly thereafter, at an annual rate not to exceed 0.75% and 0.25%,
respectively, of the net asset value of such shares, including any shares issued
for reinvested dividends and distributions after such first anniversary, so long
as such shares remain outstanding.  Lord Abbett may retain from the quarterly
distribution fee, for the payment of distribution expenses incurred directly by
it, an amount not to exceed 0.10% of the average annual net asset value of such
shares outstanding.  See the Acquired Trust Prospectus under "Purchases" for
additional information concerning the Rule 12b-1 Plan of the Acquired Trust.
     
      There are two substantive changes in the Class C 12b-1 Plan:  First,
                                                                    ----- 
payment under the plan may be made to all Authorized Institutions (institutions
and persons permitted by applicable law and/or rules to receive such payments),
rather than just to dealers, as is the case under the Acquired Trust's Rule 12b-
1 plan; and Second, the other party to the Class C 12b-1 Plan is to be Lord
            ------                                                         
Abbett Distributor (a New York limited liability company to be formed as a
subsidiary of Lord Abbett), rather than Lord Abbett itself.  Lord Abbett
Distributor will take on all the underwriting functions currently performed
directly by Lord Abbett.
    
      The Class C 12b-1 Plan was approved on March 14, 1996 by the directors of
the Income Fund, including a majority of the trustees who are not "interested
persons" of the Income Fund within the meaning of the 1940 Act and who will have
no direct or indirect financial interest in the operations of such plan or in
any agreements related thereto.  Prior to the Trust Reorganization, the Acquired
Trust will purchase one Class C share, and as sole shareholder, will approve the
Class C 12b-1 Plan prior to that class being issued to the Acquired Trust in the
Trust Reorganization.  A vote in favor of the Trust Reorganization will be
deemed also to be a vote to authorize the Acquired Trust to take such action.
     

                                       16
<PAGE>
 
FEDERAL INCOME TAX CONSIDERATIONS.  The consummation of each Reorganization is
conditioned upon the receipt of an opinion of Debevoise & Plimpton, legal
counsel to the Funds, regarding the Federal income tax consequences of that
Reorganization substantially to the effect that, for Federal income tax
purposes:

   (a) no gain or loss will be recognized by the Reorganized Fund or the
Acquired Trust, as the case may be, upon the transfer of its assets to the
Acquiring Fund in exchange for Class A shares or Class C shares, as the case may
be, and the assumption by the Acquiring Fund of its liabilities or upon the
distrib ution of the Class A shares or the Class C shares, as the case may be,
to its shareholders;

   (b) no gain or loss will be recognized by the Acquiring Fund upon the
receipt of the assets of the Reorganized Fund or the Acquired Trust, as the case
may be, in exchange for Class A shares or Class C shares, as the case may be,
and the assumption by the Acquiring Fund of the liabilities of the Reorganized
Fund or the Acquired Trust, as the case may be;

   (c) no gain or loss will be recognized by shareholders of the Reorganized
Fund or the Acquired Trust, as the case may be, upon the exchange of their
shares for Class A shares or Class C shares;

   (d) the aggregate tax basis of the Class A shares received by any Reorganized
Fund shareholder or of the Class C shares received by any Acquired Trust
shareholder pursuant to the Reorganizations will be the same as the aggregate
tax basis of the Reorganized Fund or Acquired Trust shares held by such
shareholder immediately prior to the Reorganizations, and the holding period for
the Class A shares or Class C shares to be received by any such shareholder will
include the period during which the shares exchanged therefor were held by such
shareholder (provided that such shares are held as capital assets on the date of
the Reorganizations); and

   (e) the tax basis of the assets of the Reorganized Fund or the Acquired Trust
acquired by the Acquiring Fund will be the same as the tax basis of such assets
to the Reorganized Fund or the Acquired Trust, as the case may be, immediately
prior to the Reorganizations, and the holding period of such assets in the hands
of the Acquiring Fund will include the period during which those assets were
held by the Reorganized Fund or the Acquired Trust, as the case may be.

      The Funds have not sought a tax ruling from the Internal Revenue Service
with respect to the tax consequences of the Reorganizations, but will act in
reliance upon the opinion of counsel.  Such opinion is not binding on the
Internal Revenue Service.  Since the foregoing discussion relates only to the
general Federal income tax consequences of the Reorganizations, shareholders
should also consult their tax advisors as to any state or local tax consequences
of the Reorganizations to them and any special considerations that may apply in
their individual circumstances.
    
EXPENSES OF THE REORGANIZATIONS.  Expenses of the Reorganizations, including
legal and accounting expense, the costs of proxy solicitation and the
preparation of this Prospectus and Proxy Statement, will be borne by the
Reorganized Fund and the Acquired Trust.  If the Reorganizations are
consummated, the respective expenses of the Reorganized Fund and the Acquired
Trust, to the extent not paid prior to the Closing Date, will be assumed by the
Acquiring Fund and taken into account in determining the net      

                                       17
<PAGE>
 
assets of those Funds for the purpose of calculating the numbers of Class A and
Class C shares to be issued in the Reorganizations.

CAPITALIZATION.  The following table sets forth the capitalization of the
Reorganized Fund and the Acquired Trust as of December 31, 1995, and the pro-
forma capitalization of the Acquiring Fund as if the Reorganizations had
occurred on that date:

<TABLE>
<CAPTION>
 
                                                               CLASS A                    
                                                              ACQUIRING        CLASS C    
                             REORGANIZED                        FUND       ACQUIRING FUND 
                                FUND       ACQUIRED TRUST   (PRO-FORMA -    (PRO-FORMA -  
                             (UNAUDITED)     (UNAUDITED)     UNAUDITED)      UNAUDITED)   
                             -----------   --------------   ------------   -------------- 
                                     (In thousands, except per share values)
<S>                             <C>            <C>             <C>               <C>
Net Assets.................     $301,747       $16,943         $301,747          $16,943
                                                              
Net Asset Value per Share..        10.75          4.61            10.75            10.75
Shares Outstanding                28,058         3,764           28,058            1,575
</TABLE>

         
      The exchange ratio of Class A shares for Reorganized Fund shares is to be
one for one.  The foregoing table reflects a pro-forma exchange ratio of
approximately 0.4 Class C shares for each Acquired Trust share.  If the Trust
Reorganization is consummated, the actual exchange ratio of Class C and Acquired
Trust shares may vary from this pro-forma ratio due to changes in the market
value of the portfolio securities of both the Reorganized Fund and the Acquired
Trust between December 31, 1995 and the Closing Date, and changes in the amounts
of undistributed net investment income and accrued liabilities of the
Reorganized Fund and the Acquired Trust during that period.


                    COMPARATIVE INFORMATION ABOUT THE FUNDS
    
MANAGEMENT AGREEMENTS.  Upon consummation of the Reorganizations, an investment
management agreement between the Acquiring Trust and Lord Abbett will become
effective with terms that are substantially similar to those currently in effect
between the Reorganized Fund and Lord Abbett and between the Acquired Trust and
Lord Abbett.  Under this agreement, the Acquiring Fund will pay Lord Abbett a
monthly fee, based on average daily net assets for each month, at the annual
rate of 0.50%, the same as is payable under the management agreements of the
Reorganized Fund and the Acquired Trust.  A vote in favor of the Fund
Reorganization by a shareholder of the Reorganized Fund will be deemed also to
be a vote to authorize the Reorganized Fund to approve the new investment
management agreement between the Acquiring Fund and Lord Abbett.  (See "Meetings
of Shareholders of the Reorganized Fund and the Securities Trust.")

      The Reorganized Fund's ratio of management fee expenses to average net
assets for the year ended August 31, 1995 was 0.40%.  The Acquired Trust's ratio
of management fee expenses to average net assets for the year ended October 31,
1995 was 0.0%.  Both of these fee ratios reflect waivers of management fees.
Lord Abbett has advised the Acquiring Fund that it does not intend to waive any
portion of the management fee payable by the Acquiring Fund following the
consummation of the Fund Reorganization.      

                                       18
<PAGE>
 
    
      The management agreement of the Acquired Trust provides that the Acquired
Trust will repay Lord Abbett without interest for any expenses of the Acquired
Trust paid or reimbursed by Lord Abbett, as follows: if the Acquired Trust's
annual expense ratio (determined before taking into account any fee waiver or
expense payment or reimbursement by Lord Abbett) is less than 1.95% after the
first day of the calendar quarter after the net assets of the Acquired Trust
first reach $50 million (the "commencement date"), the Acquired Trust will repay
Lord Abbett an amount sufficient to increase the expense ratio to 1.95%.  The
Acquired Trust is not obligated to repay any such expenses after the earlier of
the termination of the management agreement or the end of five full fiscal years
after the commencement date.  The contingent obligation to repay such expenses,
which totaled $88,271 as of December 31, 1995, will be extinguished upon the
consummation of the Reorganization.  Neither the Reorganized Fund nor the
Acquiring Fund has any such contingent obligation.

FEES AND EXPENSES.  As shown above under "Fee Tables," the pro-forma expense
ratio of the Class C shares was 1.53%, compared to an actual expense ratio of
0.93% for the Acquired Trust during its most recent fiscal year. If Lord Abbett
had not waived its management fee and subsidized expenses for the Acquired
Trust, the Acquired Trust's expense ratio for such year would have been 1.67%.
The pro- forma expense ratio of the Class A shares for the year ended August 31,
1995, calculated as if the Reorganizations had occurred at the beginning of such
year, was 0.87%, compared to an actual expense ratio for such year of 0.76% for
the Reorganized Fund. If Lord Abbett had not waived a portion of its management
fee for the Reorganized Fund, the Reorganized Fund's expense ratio for such year
would have been 0.86%. Lord Abbett has advised the Fund that it does not intend
to waive any portion of the management fee payable by the Acquiring Fund or
subsidize any Acquiring Fund expenses following the consummation of the Fund
Reorganization.

INVESTMENT OBJECTIVES, POLICIES AND RESTRICTIONS.  The Reorganized Fund and the
Acquired Trust have identical investment objectives:  to seek as high a level of
interest income exempt from federal and California personal income tax as is
consistent with preservation of capital.  The investment objective of the
Acquiring Fund is substantially similar:  to seek as high a level of interest
income exempt from federal and California personal income tax as is consistent
with reasonable risk.  For this purpose, "reasonable risk" means that the
Acquiring Fund over time will have a volatility approximating the Lehman
Brothers Current Coupon Long Index.

      The Reorganized Fund and the Acquired Trust also have substantially the
same investment policies and restrictions.  The investment policies and
restrictions of the Acquiring Fund, compared to those of the Reorganized Fund
and the Acquired Trust, have been simplified and made less restrictive in order
to provide greater flexibility in managing the investment portfolio of the
Acquiring Fund  and to provide greater uniformity in the investment policies and
restrictions among the various Lord Abbett- sponsored funds.  A number of the
investment policies and restrictions that are classified as fundamental for the
Reorganized Fund and the Acquired Trust are classified as non-fundamental for
the Acquiring Fund.  In other instances, certain fundamental restrictions of the
Reorganized Fund and the Acquired Trust have been modified or eliminated in the
case of the Acquiring Fund.  Fundamental investment restrictions may not be
changed without approval of the stockholders of a fund and the costs of
shareholder meetings for these purposes generally are borne by the fund and its
shareholders.  The board may amend a non-fundamental restriction as it deems
appropriate and in the best interest of the fund and its stockholders, without
incurring the costs of seeking a shareholder vote.      

                                       19
<PAGE>
 
    
      The principal effect for the shareholders of the Reorganized Fund and the
Acquired Trust of the changes in the fundamental policies of the Acquiring Fund
will be to permit the Acquiring Fund to take certain actions not now permitted
to the Reorganized Fund or the Acquired Trust without obtaining approval of the
shareholders.  The Acquiring Fund either will not be permitted to, or does not
intend to, take any such action unless such action is approved by the Board of
Directors of the Income Fund.  The board does not now intend to approve any such
action or to do so in the future unless it deems such action to be an
appropriate means of seeking the Acquiring Fund's investment objective in the
best interests of the Acquiring Fund and its shareholders, in which case
disclosure of the change would be made in the Income Fund's then current
prospectus or statement of additional information or both.  Such actions, none
of which the board has a present intention of approving, involve the following
matters, among others: (i) short sales of securities and purchases of securities
on margin to the extent permitted by applicable law; (ii) borrowings from banks
in amounts up to one-third of total assets (and up to an additional 5% of total
assets for temporary purposes) and such short-term credits as may be necessary
for the clearance of purchases and sales of portfolio securities; (iii) loans of
portfolio securities to the extent permitted by law; (iv) purchases and sales of
securities directly or indirectly secured by real estate or interests therein
and of commodities and commodity contracts in accordance with applicable law so
long as registration would not be required as a commodity pool operator under
the Commodity Exchange Act; (v) for the Reorganized Fund, with respect to 25% of
gross assets, investments of more than 5% of gross assets in the securities of
any one issuer; (vi) for the Reorganized Fund, investments of more than 10% of
gross assets in illiquid securities; (vii) investments in the securities of
other investment companies to the extent permitted by applicable law; and (viii)
purchases and sales of puts, calls, straddles and spread options. 

      A summary comparison of the fundamental and certain non-fundamental
investment policies and restrictions of the Acquiring Fund, the Reorganized Fund
and the Acquired Trust is set forth in Exhibit C to this Proxy Statement and
Prospectus.  For a full discussion of the Acquiring Fund's investment
objectives, policies and restrictions, see "Investment Objective" and "How We
Invest" in  the Acquiring Fund Prospectus and "Investment Objective and
Policies" in the Acquiring Fund Statement of Additional Information.  For a full
discussion of the investment objectives, policies and restrictions of the
Reorganized Fund and the Acquired Trust, see "Investment Objective" and "How We
Invest" in the Reorganized Fund Prospectus and the Acquired Trust Prospectus,
respectively, and "Investment Objective and Policies" in the Reorganized Fund
Statement of Additional Information and Acquired Trust Statement of Additional
Information, respectively.  The summary comparison set forth in Exhibit C does
not purport to be complete, and is subject in all respects to, and is qualified
in its entirety by reference to, such statements of such policies and
restrictions.

SHAREHOLDERS' RIGHTS.  The Acquiring Fund believes that the rights of the
shareholders of the Reorganized Fund and the Acquired Trust will not change in
an adverse way as a result of the Reorganizations.  After the Reorganizations,
the rights of the former shareholders of the Reorganized Trust and the Acquired
Trust will be governed by the Income Fund's Articles of Incorporation, By-Laws
and applicable Maryland law.  Prior to the Fund Reorganization, the rights of
the shareholders of the Reorganized Fund are governed by the Articles of
Incorporation and By-Laws of the Reorganized Fund and applicable Maryland law.
Prior to the Trust Reorganization, the rights of the shareholders of the
Acquired Trust are governed by the Declaration of Trust and By-Laws of the
Securities Trust and applicable Delaware law.  The operations of the Acquiring
Fund will continue to be subject to the provisions of the 1940 Act and the rules
and regulations of the Commission thereunder.      

                                       20
<PAGE>
 
    
      The current Board of Directors of the Reorganized Fund and Board of
Trustees of the Acquired Trust comprise the same individuals as the current
Board of Directors of the Income Fund.  The responsibilities and fiduciary
duties of the directors of the Acquiring Fund are substantially the same as
those of the directors of the Reorganized Fund and the trustees of the Acquired
Trust.  The Acquiring Fund's and the Reorganized Fund's By-Laws provide for
indemnification of the directors for actual liabilities arising out of their
service in their capacity as directors, subject only to the conditions and
limitations of applicable law.  The Securities Trust's Declaration of Trust
provides for indemnification of the trustees against certain liabilities and
expenses, except with respect to (i) any matter as to which any trustee has been
adjudicated not to have acted in good faith in the reasonable belief that his or
her action was in the best interest of such Trust, (ii) any liability by reason
of willful misfeasance, bad faith, gross negligence or reckless disregard of
duties or (iii) any matter disposed of by settlement, compromise or consent
decree, unless it is in the best interests of such trust or if said trustee
acted in good faith in the reasonable belief that such act was in the best
interests of the trust.  Income Fund and Reorganized Fund shareholders may
remove, with or without cause, any director by the affirmative vote of a
majority of the votes cast.  Securities Trust shareholders may remove a trustee
by the vote of shareholders of record of not less than two-thirds.      

      Neither the Reorganized Fund, the Acquired Trust nor the Income Fund
regularly holds shareholder meetings.  The By-laws of each of the Funds provide
that a meeting of shareholders will be held upon the written request of holders
of at least 25% of votes entitled to be cast.

      The foregoing is only a summary of certain rights of the shareholders of
the Reorganized Fund and the Acquired Trust and of the rights these shareholders
will have following the Reorganizations as holders of Class A shares and Class C
shares of the Acquiring Fund.  It is not a complete description of the Articles
of Incorporation of the Income Fund and the Reorganized Fund, the Declaration of
Trust of the Acquired Trust, the  By-Laws of any of the Funds or the applicable
Maryland or Delaware law.  Shareholders desiring additional information about
those documents and provisions of law should refer to such Articles of Incorpo
ration, Declaration of Trust, By-Laws and provisions.


REQUIRED VOTES
    
      Approval of the Fund Plan and the Fund Reorganization will require the
affirmative vote of a majority of the outstanding shares of the Reorganized
Fund, and approval of the Trust Plan and the Trust Reorganization will require
the affirmative vote of a majority of the shares of the Acquired Trust voted on
the matter.

      In the case of the Fund Plan and the Fund Reorganization the effect of an
abstention or broker non-vote by a Reorganized Fund shareholder is the same as a
vote against.

      If an Acquired Trust shareholder abstains from voting on this matter, then
the shares held by such shareholder shall be deemed present at the meeting for
purposes of determining a quorum, but shall not be deemed to have been voted on
this matter.  If a broker returns a "non-vote" proxy for an Acquired Trust
shareholder, indicating a lack of authority to vote on this matter, then the
shares covered by such non-vote shall be deemed present at the meeting for
purposes of determining a quorum, but shall not be deemed to have been voted on
this matter.      

                                       21
<PAGE>
 
      The Board of Directors of the Reorganized Fund recommends that
shareholders of the Reorganized Fund vote FOR approval of the Fund Plan and the
Fund Reorganization, and the Board of Trustees of the Securities Trust
recommends that shareholders of the Acquired Trust vote FOR approval of the
Trust Plan and the Trust Reorganization.


               ITEM 2. -  FOR REORGANIZED FUND SHAREHOLDERS ONLY

      The Board of Directors of the Reorganized Fund believes that it is
important to ensure continuity of operation of the Reorganized Fund in the event
that the Fund Reorganization is not consummated.  Accordingly, the Board has
determined that: (i) the persons who currently constitute the Board of Directors
of the Reorganized Fund should stand for re-election, for a term of office to
extend until their successors are elected and qualified, and (ii) the selection
of Deloitte & Touche LLP as the independent public accountants of the
Reorganized Fund should be submitted to shareholders for ratification, as
required by the 1940 Act if the Reorganized Fund continues to engage in business
as an investment company.

                A. ELECTION OF DIRECTORS OF THE REORGANIZED FUND

      The nominees for election as directors of the Reorganized Fund are Ronald
P. Lynch, Robert S. Dow, E. Thayer Bigelow, Stewart S. Dixon, John C. Jansing,
C. Alan MacDonald, Hansel B.  Millican, Jr.  and Thomas J. Neff, who have been
nominated by the Board of Directors to succeed themselves.  The individuals
named as proxies intend to vote the proxies, unless otherwise directed, in favor
of the election of such nominees, each of whom has agreed to continue to serve
as a director of the Reorganized Fund.  Management of the Reorganized Fund has
no reason to believe that any nominee will be unable to serve as a director.  If
any nominee should be unable to serve as a director, it is the intention of the
individuals named as proxies to vote for the election of such person or persons
as the Board of Directors may, in its discretion, recommend.

      Information about each person nominated for election as a director is set
forth in the following table.  Except where indicated, each of the persons
listed in the table has held the principal occupation listed opposite his name
for the past five years.

                                       22
<PAGE>
 
<TABLE>
<CAPTION>
 
 Names and Ages of                                                               Director of the
Directors of the Fund           Principal Occupation and Directorships             Fund Since
- ---------------------           --------------------------------------           ---------------
<C>                          <S>                                                  <C>
Ronald P. Lynch (1)(2)       Chairman of the Board of the Reorganized                        1985
60                           Fund.
                             Partner of Lord Abbett.
Robert S. Dow (1)(2)         President of the Reorganized Fund.                              1985
50                           Partner of Lord Abbett.
E. Thayer Bigelow            President and Chief Executive Officer of                        1994
(2) 54                       Time Warner Cable Programming, Inc.,
                             formerly President and Chief Operating
                             Officer of Home Box Office, Inc.
 
Stewart S. Dixon (2)         Partner in the law firm of Wildman, Harrold,                    1985
65                           Allen & Dixon.
 
John C. Jansing (2)          Retired.  Former Chairman of Independent                        1985
70                           Election Corporation of America, a proxy
                             tabulating firm.
 
C. Alan MacDonald (2)        General Partner, The Marketing Partnership,                     1988
62                           Inc., a full service marketing consulting firm.
                             Formerly Chairman and Chief Executive
                             Officer of Lincoln Snacks, Inc., manufacturer
                             of branded snack foods (1992-1994).
                             Formerly President & CEO of Nestle Foods
                             Corp., and prior to that, President & CEO of
                             Stouffer Foods Corp., both subsidiaries of
                             Nestle SA, Switzerland.  Currently serves as
                             Director of Den West Restaurant Co., J. B.
                             Williams, and Fountainhead Water Com-
                             pany.
 
Hansel B. Millican, Jr. (2)  President and Chief Executive Officer of                        1985
66                           Rochester Button Company.
 
Thomas J. Neff (2)           President, Spencer Stuart & Associates, an                      1985
58                           executive search consulting firm.
</TABLE>

         
- ----------
(1)  "Interested person" of the Reorganized Fund and Lord Abbett,  within the
      meaning of the Investment Company Act of 1940, as amended, because of his
      association with Lord Abbett.
(2)   Also a director or trustee of the other Lord Abbett-sponsored funds except
      for Lord Abbett Research Fund, Inc., of which only Messrs. Lynch, Dow,
      Millican and Neff are directors.

                                       23
<PAGE>
 
    
      Listed below is the number of shares of the Reorganized Fund's outstanding
capital stock owned beneficially by each director as of March 22, 1996, together
with the number of "phantom" shares credited to the account of each director
under a plan (the "Deferred Plan") permitting independent directors to defer
their directors' fees and to have the deferred amounts deemed invested in shares
of the capital stock of the Reorganized Fund for later payment. Also shown is
the number of shares owned beneficially by the directors and officers as a
group, together with such "phantom" shares credited to the accounts of directors
as a group. In each case, the amounts shown are less than 1% of the Reorganized
Fund's outstanding capital stock.      


                                       Number of Shares Beneficially 
                    Name               Owned and Phantom Shares/(1)/
        ----------------------------   -----------------------------
        Ronald P. Lynch                               93            
        Robert S. Dow                                935            
        E. Thayer Bigelow                            133            
        Stewart S. Dixon                           2,059            
        John C. Jansing                            2,186            
        C. Alan MacDonald                            923            
        Hansel B. Millican, Jr.                    2,183            
        Thomas J. Neff                             2,239            
        Directors and Officers as a               13,958            
           group                                                     
         
___________________
    
(1)  Of the shares listed in the foregoing table, the following constitute
     "phantom" shares credited to directors under the Deferred Plan:  Mr.
     Bigelow, 133 shares; Mr. Dixon, 2,059 shares; Mr. Jansing, 2,186 shares;
     Mr. MacDonald, 923 shares; Mr. Millican, 2,183 shares; Mr. Neff, 2,239
     shares; and directors as a group:  9,733.      

      The board of the Reorganized Fund has only one standing committee, an
Audit Committee, consisting of Messrs. Bigelow, MacDonald and Millican.  The
functions performed by the Audit Committee include recommendation of the
selection of independent public accountants for the Reorganized Fund to the
Board for approval, review of the scope and results of audit and non-audit
services, the adequacy of internal controls and material changes in accounting
principles and practices and other matters when requested from time to time by
the directors who are not "interested persons" of the Reorganized Fund within
the meaning of the 1940 Act.  The Audit Committee held four meetings during the
fiscal year of the Reorganized Fund ended August 31, 1995.

                                       24
<PAGE>
 
    
      The Board of Directors of the Reorganized Fund met ten times during the
fiscal year ended August 31, 1995, and each director attended at least 75% of
the total number of meetings of the Board and, if he was a member of the Audit
Committee, of such committee.      

      The second column of the following table sets forth the compensation
accrued by the Reorganized Fund for the Directors not associated with Lord
Abbett.  The third and fourth columns set forth information with respect to the
retirement plan for the directors not associated with Lord Abbett maintained by
the Reorganized Fund and the other Lord Abbett-sponsored funds.  The fifth
column sets forth the total compensation accrued by the Reorganized Fund and
such other funds for such directors.  The second, third and fourth columns give
information for the Reorganized Fund's most recent fiscal year; the fifth column
gives information for the calendar year ended December 31, 1995.  No director
associated with Lord Abbett and no officer of the Reorganized Fund received any
compensation from the Reorganized Fund for acting as a director or officer.

<TABLE>
<CAPTION>
                                                                                          For Year Ended    
                                    For the Fiscal Year Ended August 31, 1995             December 31, 1995
                            ---------------------------------------------------------     -----------------
      (I)                        (II)                (III)              (IV)                    (V)
- ----------------            --------------       ----------------  ------------------     ----------------- 
                                                 Pension or                                              
                                                 Retire-           Estimated Annual                       
                                                 ment Benefits     Benefits Upon Re-                        
                                                 Accrued by the    tirement Proposed      Total Compensation  
                                                 Reorganized       to be Paid by the      Accrued by the Re-  
                            Aggregate Com-       Fund and Fifteen  Reorganized Fund       organized Fund and  
                            pensation Ac-        Other Lord        and Fifteen Other      Fifteen Other Lord  
                            crued by the Re-     Abbett-sponsored  Lord Abbett-spon-      Abbett-sponsored   
Name of Director            organized Fund/1/    Funds/2/          sored Funds/2/         Funds/3/       
- ----------------            --------------       ----------------  ------------------     ------------------
<S>                         <C>                  <C>               <C>                    <C>
E. Thayer Bigelow/4/        $      830           $      9,772      $    33,600            $    41,700
Thomas F. Creamer/5/        $        0           $     26,084      $    33,600            $         0
Stewart S. Dixon            $    1,085           $     22,472      $    33,600            $    42,000
John C. Jansing             $    1,085           $     28,480      $    33,600            $    42,960
C. Alan MacDonald           $    1,060           $     27,435      $    33,600            $    42,750
Hansel B. Millican, Jr.     $    1,073           $     24,707      $    33,600            $    43,000
Thomas J. Neff              $    1,053           $     16,126      $    33,600            $    42,000
- ------------------------------------------------------------------------------------------------------------
</TABLE>

         
(1)  Fees for directors not associated with Lord Abbett, including attendance
     fees for board and com mittee meetings, are allocated among all Lord
     Abbett-sponsored funds based on net assets of each fund.  A portion of fees
     payable by the Reorganized Fund to such directors are being deferred under
     a plan that deems the deferred amounts to be invested in shares of the
     Reorganized Fund for later payment to the directors.  The total amount
     accrued under the plan for each such director since the beginning of his
     tenure with the Reorganized Fund, including dividends reinvested and
     changes in net asset value applicable to such deemed 

                                       25
<PAGE>
 
     investments, were as follows as of August 31, 1995: Mr. Bigelow, $876; Mr.
     Dixon, $20,872; Mr. Jansing, $21,669; Mr. MacDonald, $9,464; Mr. Millican,
     $21,645; and Mr. Neff, $20,872.

(2)  Each Lord Abbett-sponsored fund has a retirement plan providing that
     Directors not associated with Lord Abbett will receive annual retirement
     benefits for life equal to 80% of their final annual retainers following
     retirement at or after age 72 with at least 10 years of service. Each plan
     also provides for a reduced benefit upon early retirement under certain
     circumstances, a pre-retirement death benefit and actuarially reduced
     joint-and-survivor spousal benefits. The amounts stated in column (IV)
     would be payable annually under such retirement plans if the director were
     to retire at age 72 and the annual retainers payable by such funds were the
     same as they are today.  The amounts set forth in column (III) were accrued
     by the Lord Abbett-sponsored funds during the fiscal year ended August 31,
     1995 with respect to the retirement benefits set forth in column (IV).
    
(3)  This column shows aggregate fees of directors who are not associated with
     Lord Abbett, including attendance fees for board and committee meetings, of
     a nature referred to in the first sentence of footnote (1), accrued by the
     Lord Abbett-sponsored funds during the year ended De cember 31, 1995.      

(4)  Mr. Bigelow was elected a director of the Fund on October 19, 1994.

(5)  Mr. Creamer retired as a director of the Fund effective September 21, 1994.
     The stated amount of his retirement income (column iv) is the annual amount
     payable to him by the Lord Abbett-sponsored funds before reduction for a
     joint-and-survivor spousal benefit.

        Listed below are the executive officers of the Reorganized Fund, other
than Messrs. Lynch and Dow who are listed above in the table of nominees.  Each
executive officer has been associated with Lord Abbett for over five years,
except as indicated.  Messrs. Allen, Carper, Cutler, Henderson, Morris, Nordberg
and Walsh are partners of Lord Abbett; the others listed below are employees.

Stephen I. Allen, age 42, Vice President since 1994.

Daniel E. Carper, age 44, Vice President since 1986.

Kenneth B. Cutler, age 63, Vice President and Secretary since 1985.

John J. Gargana, Jr., age 64, Vice President since 1985.

Thomas S. Henderson, age 64, Vice President since 1985.

Paul A. Hilstad, age 53, Vice President since 1995 (with Lord Abbett since 1995
- - formerly Senior Vice President and General Counsel of American Capital
Management & Research, Inc.).
    
Thomas F. Konop, age 54, Vice President since 1987.      

                                       26
<PAGE>
 
E. Wayne Nordberg, age 59, Vice President since 1988.

Robert G. Morris, age 51, Vice President since 1995.

Keith F. O'Connor, age 40, Treasurer since 1987.

Barbara A. Grummel, age 39, Executive Vice President since 1994.

Victor W. Pizzolato, age 63, Vice President since 1985.
    
John J. Walsh, age 60, Vice President since 1985.

        Pursuant to the Reorganized Fund's By-Laws, the election of each
director of the Reorganized Fund requires the affirmative vote of a majority of
the votes cast.  If a shareholder abstains from voting on this matter, then the
shares held by such shareholder shall be deemed present at the meeting for
purposes of determining a quorum, but shall not be deemed to have been voted on
this matter.  If a broker returns a "non-vote" proxy, indicating a lack of
authority to vote on this matter, then the shares covered by such non-vote shall
be deemed present at the meeting for purposes of determining a quorum, but shall
not be deemed to have been voted on this matter.      

        The Board of Directors of the Reorganized Fund recommends that the
shareholders vote FOR the election of each of the nominees as directors of the
Reorganized Fund.

                                       27
<PAGE>
 
                        B. RATIFICATION OR REJECTION OF
                         INDEPENDENT PUBLIC ACCOUNTANTS

        The Board of Directors of the Reorganized Fund has selected Deloitte &
Touche LLP as the in dependent public accountants of the Reorganized Fund for
the fiscal year ending August 31, 1996.  The 1940 Act requires that such
selection be submitted for ratification or rejection at the next annual meeting
of shareholders if such meeting be held.  Deloitte & Touche LLP (or a
predecessor firm) acted as the Reorganized Fund's independent public accountants
for the year ended August 31, 1995, and for a number of years prior thereto.
Based on information in the possession of the Reorganized Fund, and information
furnished by Deloitte & Touche LLP, such firm has no direct financial interest
and no material indirect financial interest in the Reorganized Fund.  A
representative of Deloitte & Touche LLP is expected to attend the meeting and
will be provided with an opportunity to make a statement and answer appropriate
questions.  The Board of Directors' recommendation of Deloitte & Touche LLP has
been made so that such firm may continue to serve as the independent public
accountants of the Reorganized Fund in the event that the Fund Reorganization
does not occur for any reason.
    
        Ratification of the selection of Deloitte & Touche LLP by the
shareholders of the Reorganized Fund requires the affirmative vote of a majority
of the votes cast.  If a shareholder abstains from voting on this matter, then
the shares held by such shareholder shall be deemed present at the meeting for
purposes of determining a quorum, but shall not be deemed to have been voted on
this matter.  If a broker returns a "non-vote" proxy, indicating a lack of
authority to vote on this matter, then the shares covered by such non-vote shall
be deemed present at the meeting for purposes of determining a quorum, but shall
not be deemed to have been voted on this matter.      

        The Board of Directors of the Reorganized Fund recommends that
shareholders vote to ratify the selection of Deloitte & Touche LLP as the
Reorganized Fund's independent public accountants for the fiscal year ending
August 31, 1996.


                ITEM 3.  - FOR ACQUIRED TRUST SHAREHOLDERS ONLY

                          RATIFICATION OR REJECTION OF
                         INDEPENDENT PUBLIC ACCOUNTANTS

        The Board of Trustees of the Securities Trust has selected Deloitte &
Touche LLP as the in dependent public accountants of the Securities Trust for
the fiscal year ending October 31, 1996.  The 1940 Act requires that such
selection be submitted for ratification or rejection at the next annual meeting
of shareholders if such meeting be held.  Deloitte & Touche LLP (or a
predecessor firm) acted as the Securities Trust's independent public accountants
for the year ended October 31, 1995, and for a number of years prior thereto.
Based on information in the possession of the Securities Trust, and information
furnished by Deloitte & Touche LLP, such firm has no direct financial interest
and no material indirect financial interest in the Securities Trust.  A
representative of Deloitte & Touche LLP is expected to attend the meeting and
will be provided with an opportunity to make a statement and answer appropriate
questions.

                                       28
<PAGE>
 
    
        Ratification of the selection of Deloitte & Touche LLP by the
shareholders of Securities Trust requires the affirmative vote of a majority of
the shares of the Securities Trust voted on the matter. If a shareholder
abstains from voting on this matter, then the shares held by such shareholder
shall be deemed present at the meeting for purposes of determining a quorum, but
shall not be deemed to have been voted on this matter.  If a broker returns a
"non-vote" proxy, indicating a lack of authority to vote on this matter, then
the shares covered by such non-vote shall be deemed present at the meeting for
purposes of determining a quorum, but shall not be deemed to have ben voted on
this matter.

        The Board of Trustees of the Securities Trust recommends that
shareholders vote to ratify the selection of Deloitte & Touche LLP as Securities
Trust's independent public accountants for the fiscal year ending October 31,
1996.      

                             ADDITIONAL INFORMATION
    
        Following the Fund Reorganization, the Acquiring Fund will adopt the
August 31 fiscal year of the Reorganized Fund and then, following the close of
the August 31, 1996 fiscal year, will adopt the September 30 fiscal year of the
Income Fund.

        To the knowledge of the Funds, as of March 22, 1996, no person owned of
record or beneficially 5% or more of the outstanding shares of any of the Funds
(or of the Securities Trust or of the Income Fund).  As of March 22, 1996, the
directors and officers, as a group, owned 1.15% of the outstanding shares of
the Income Fund.      

        The Reorganized Fund, the Securities Trust and the Income Fund are
subject to the informational requirements of the Securities Exchange Act of 1934
and in accordance therewith file reports, proxy statements and other information
with the Securities and Exchange Commission.  Such reports, proxy statements and
other information filed by such entities can be inspected and copied at the
public reference facilities of the Commission at Room 1024, 450 Fifth Street,
N.W., Washington, D.C., and at the Northeast Regional Office in New York, 7
World Trade Center, 13th Floor, New York, New York.  Copies of such material can
also be obtained by mail from the Public Reference Branch, Office of Consumer
Affairs and Information Services, Securities and Exchange Commission,
Washington, D.C. 20549 at prescribed rates.

                                       29
<PAGE>
 
                                                                     EXHIBIT A-1
                                                                     -----------

                     AGREEMENT AND PLAN OF REORGANIZATION

     THIS AGREEMENT AND PLAN OF REORGANIZATION (the "Agreement") is made as of
this      day of      , 1996, by and between Lord Abbett California Tax-Free
Income Fund, Inc. (the "Acquired Fund"), a Maryland cor poration, and Lord
Abbett Tax-Free Income Fund, Inc. (the "Income Fund"), a Maryland corporation,
on behalf of its series California Series (the "Acquiring Fund").

     WHEREAS, this Agreement is intended to be and is adopted as a plan of
reorganization and liquidation within the meaning of Section 368(a)(1)(C) and
(F) of the United States Internal Revenue Code of 1986, as amended (the "Code");

     WHEREAS, the reorganization (the "Reorganization") will consist of the
transfer of all of the assets of the Acquired Fund in exchange for shares of
beneficial ownership of the Acquiring Fund (to be designated as Class A Shares,
the "Acquiring Fund Class A Shares" and each an "Acquiring Fund Class A Share")
and the assumption by the Acquiring Fund of all of the liabilities of the
Acquired Fund and the distribution, after the Closing Date herein referred to,
of Acquiring Fund Class A Shares to the shareholders of the Acquired Fund in
liquidation of the Acquired Fund, all upon the terms and conditions hereinafter
set forth in this Agreement;

     WHEREAS, the Income Fund and the Acquired Fund are open-end, registered
investment companies of the management type;

     WHEREAS, the Acquired Fund owns securities that generally are of the
character in which the Acquiring Fund is permitted to invest;

     WHEREAS, the Acquiring Fund is authorized to issue a single class of shares
(the "Acquiring Fund Class A Shares");

     WHEREAS, after the multiple class share structure is authorized by the
Acquiring Fund but before the Acquiring Fund Class A Shares are issued to the
Acquired Fund, the Acquired Fund is to purchase one Acquiring Fund Class A share
and as sole shareholder (i) approve a plan pursuant to Section 12(b) of the
                         -                                                 
Investment Company Act of 1940 (the "1940 Act") and Rule 12b-1 thereunder (a
"Rule 12b-1 Plan") applicable to the Acquiring Fund Class A Shares and (ii)
                                                                        -- 
approve the proposed investment management agreement between the Acquiring Fund
and Lord, Abbett & Co. ("Lord Abbett");
<PAGE>
 
     WHEREAS, the Board of Directors, including a majority of the directors who
are not "interested persons" (as defined under the 1940 Act) of the Acquired
Fund, has determined that the Reorganization is in the best interests of the
Acquired Fund's shareholders and that the interests of the existing shareholders
of the Acquired Fund will not be diluted as a result of this transaction;

     WHEREAS, the Board of Directors, including a majority of the directors who
are not "interested persons" (as defined under the 1940 Act ), of the Income
Fund has determined that the Reorganization is in the best interests of the
Acquiring Fund's shareholders and that the interests of the existing
shareholders of the Acquiring Fund will not be diluted as a result of this
transaction; and

     NOW THEREFORE, in consideration of the premises and of the agreements
hereinafter set forth, the parties hereto agree as follows:

1.  REORGANIZATION
    
     1.1.  Subject to the terms and conditions herein set forth and on the basis
of the representations and warranties contained herein, the Acquired Fund will
transfer its assets as set forth in paragraph 1.2 to the Acquiring Fund, and the
Acquiring Fund will in exchange therefor, (i) deliver to the Acquired Fund the
                                           -                                  
number of Acquiring Fund Class A Shares, including fractional Acquiring Fund
Class A Shares, equal to the number of the shares of capital stock of the
Acquired Fund as of the close of regular trading on the New York Stock Exchange
(the "NYSE") on the Closing Date (such time and date being hereinafter called
the "Valuation Date"); and (ii) assume the liabilities of the Acquired Fund.
                            --                                               
Such transactions shall take place at the closing provided for in paragraph 3.1
(the "Closing").      

     1.2.  (a)  The assets of the Acquired Fund to be acquired by the Acquiring
Fund shall consist of all of its property, including, without limitation, all
cash, securi ties and dividends or interest receivables and any deferred or
prepaid expenses shown as an asset on the books of the Acquired Fund on the
closing date provided in paragraph 3.1 (the "Closing Date").

     (b)  The Acquiring Fund has a list of all of the Acquired Fund's assets as
of the date of execution of this Agreement.  The Acquired Fund has a statement
of the Acquiring Fund's investment objectives, policies and restrictions.  The
Acquired Fund reserves the right to sell any of its securities but will not,
without the prior approval of the Acquiring Fund, acquire any additional
securities other than securities of the type in which the Acquiring Fund is
permitted to invest.  The Acquiring Fund

                                       2
<PAGE>
 
will, within a reasonable time prior to the Closing Date, furnish the Acquired
Fund with a list of the securities, if any, on the Acquired Fund's list referred
to in the first sentence of this paragraph which do not conform to the Acquiring
Fund's investment objectives, policies and restrictions.  In the event that the
Acquired Fund holds any investments which the Acquiring Fund may not hold, the
Acquired Fund will dispose of such securities prior to the Closing Date.  In
addition, if it is determined that the portfolios of the Acquired Fund and the
Acquiring Fund, when aggregated, would contain investments exceeding certain
percentage limitations imposed upon the Acquiring Fund with respect to such
investments, the Acquired Fund, if requested by the Acquiring Fund, will dispose
of and/or reinvest a sufficient amount of such in vestments as may be necessary
to avoid violating such limitations as of the Closing Date.

     1.3.  As provided in paragraph 3.4, as soon after the Closing Date as is
conveniently practicable, the Acquired Fund will distribute pro rata to the
Acquired Fund's shareholders of record determined as of the close of business on
the Closing Date, the Acquiring Fund Class A Shares it receives pursuant to
paragraph 1.1.  Such distribution will be accomplished by establishing Acquiring
Fund shareholder accounts in the names of each Acquired Fund shareholder,
representing the same number of full and fractional Acquiring Fund Class A
Shares due each shareholder.  All issued and outstanding shares of the Acquired
Fund will simultaneously be canceled on the books of the Acquired Fund.  The
Acquiring Fund shall not issue certificates representing the Acquiring Fund
Shares in connection with such exchange.

     1.4.  Any transfer taxes payable upon issuance of Acquiring Fund Class A
Shares in a name other than the registered holder of the shares of the Acquired
Fund on the books of the Acquired Fund as of that time shall, as a condition of
such issuance and transfer, be paid by the person to whom such Acquiring Fund
Class A Shares are to be issued and transferred.
    
     1.5.  The Acquired Fund shall, following the Closing Date and the making of
all distributions pursuant to paragraph 1.3, be dissolved pursuant to the law of
Maryland.  Any reporting responsibility of the Acquired Fund is and shall remain
the responsibility of the Acquired Fund up to and including the Closing Date and
following the dissolution of the Acquired Fund.      

2.  VALUATION

     2.1.  The net value of the Acquired Fund's assets to be acquired by the
Acquiring Fund hereunder shall be the value of such assets, less the Acquired
Fund's liabilities assumed by the Acquiring Fund, computed as of the close of
regular trading

                                       3
<PAGE>
 
on the Valuation Date, using the valuation procedures set forth in the Articles
of Incorporation of the Income Fund.

     2.2.  All computations of value shall be made by the Acquiring Fund and the
Acquired Fund in accordance with the regular practice of the Acquired Fund.

3.  CLOSING AND CLOSING DATE

     3.1.  The Closing Date shall be July 12, 1996, or such other date as the
parties may agree to in writing.  All acts taking place at the Closing shall be
deemed to take place simultaneously as of the close of business on the Closing
Date unless otherwise provided.  The Closing shall be held as of 5:00 p.m. at
the offices of [specify location in New Jersey], or at such other time and/or
place as the parties may agree.

     3.2.  In the event that on the Valuation Date (a) the NYSE or another
                                                    -                     
primary trading market for portfolio securities of the Acquiring Fund or the
Acquired Fund shall be closed to trading or trading thereon shall be restricted
or (b) trading or the reporting of trading on the NYSE or elsewhere shall be
    -                                                                       
disrupted so that accurate appraisal of the value of the net assets of the
Acquiring Fund or the Acquired Fund is impracticable, the Closing Date shall be
postponed until the first business day after the day when trading shall have
been fully resumed and reporting shall have been restored.

     3.3.  At the Closing, the Acquired Fund shall direct its custodian to
deliver to the custodian of the Acquiring Fund, for the Acquiring Fund's
account, all of its portfolio securities and other assets held by such custodian
for the Acquired Fund's account, duly endorsed in proper form for transfer as
appropriate, in such condition as to constitute good delivery thereof in
accordance with the custom of the Acquiring Fund's custodian, and shall be
accompanied by all necessary federal and state stock transfer stamps or a check
for the appropriate purchase price thereof.

     3.4.  The Acquired Fund shall direct its transfer agent to deliver to the
transfer agent of the Acquiring Fund on the Closing Date a list of the names and
addresses of the Acquired Fund's shareholders and the number of outstanding
shares owned by each such shareholder immediately prior to the Closing.  The
Acquiring Fund shall direct its transfer agent to issue and deliver a
confirmation evidencing the Acquiring Fund Class A Shares to be credited to the
Acquired Fund's account on the Closing Date to the transfer agent of the
Acquired Fund, or provide evidence satisfactory to the Acquired Fund that such
Acquiring Fund Class A Shares have been credited to the Acquired Fund's account
on the books of the Acquiring Fund.  At the Closing, each

                                       4
<PAGE>
 
party shall deliver to the other such bills of sale, checks, assignments, share
cer tificates, if any, receipts, assumption agreements or other documents as
such other party or its counsel may reasonably request.

4.  REPRESENTATIONS AND WARRANTIES

     4.1.  The Acquired Fund represents and warrants to the Income Fund as
follows:

     (a)  The Acquired Fund is a registered investment company classified as a
management company of the open-end type, and its registration with the
Securities and Exchange Commission (the "Commission") as an investment company
under the 1940 Act is in full force and effect.

     (b)  The Acquired Fund is duly organized, validly existing and in good
standing under the laws of the State of Maryland and has the power to own all of
its properties and assets and to carry out this Agreement.

     (c)  The current prospectus and statement of additional information of the
Acquired Fund conform (and any prospectus or statement of additional information
of the Acquired Fund issued prior to the Closing Date will conform) in all
material respects to the applicable requirements of the Securi ties Act of 1933
Act, as amended (the "1933 Act"), and the 1940 Act and the rules and regulations
of the Commission thereunder and do not (and will not) include any untrue
statement of a material fact or omit to state any material fact required to be
stated therein or necessary to make the statements therein, in light of the
circumstances under which they were (and will be) made, not materially
misleading.

     (d)  The Acquired Fund is not, and the execution, delivery and per formance
of this Agreement will not result, in a material violation of its Articles of
Incorporation or By-laws or of any agreement, instrument, contract or other
undertaking to which the Acquired Fund is a party or by which it is bound.

     (e)  The Acquired Fund has no material contracts or other commitments which
will be terminated with liability to the Acquired Fund on, prior to or after the
Closing Date.

     (f)  Except as otherwise disclosed in writing to and accepted by the
Acquiring Fund, no litigation or administrative proceeding or investigation

                                       5
<PAGE>
 
before any court or governmental body is presently pending or to its knowl edge
threatened against the Acquired Fund or any of the Acquired Fund's properties or
assets, which if adversely determined would materially and adversely affect the
financial condition of the Acquired Fund or the conduct of the Acquired Fund's
business.  The Acquired Fund knows of no facts which might form the basis of the
institution of such a proceeding and is not party to or subject to the
provisions of any order, decree or judgment of any court or governmental body
which materially and adversely affects the business of the Acquired Fund or the
ability of the Acquired Fund to consummate the trans actions contemplated
herein.

     (g)  True and correct copies of the Acquired Fund's (i) Statement of Net
                                                          -                  
Assets as at August 31, 1995 and (ii) Statements of Operations and Changes in
                                  --                                         
Net Assets for the 12-month period then ended, including the accompanying notes,
have been furnished to the Acquiring Fund.  Such Statement of Net Assets and
such Statements of Operations and Changes in Net Assets (and the accompanying
notes) have been audited by Deloitte & Touche LLP, independent certified public
accountants.  Such statements have been prepared in accordance with generally
accepted accounting principles consistently applied, and such statements fairly
reflect the financial condition and the operations and changes in net assets of
the Acquired Fund as of such date and for such period, respectively.  There are
no known contingent liabilities of the Acquired Fund as of such date required to
be reflected or disclosed in such Statement of Net Assets or notes in
accordance with gener ally accepted accounting principles that are not so
reflected or disclosed.

     (h)  Since August 31, 1995, there has not been any material adverse change
in the Acquired Fund's financial condition, assets, liabilities or busi ness
other than changes occurring in the ordinary course of business, or any
incurrence by the Acquired Fund of indebtedness maturing more than one year from
the date such indebtedness was incurred, except as otherwise disclosed to and
accepted by the Acquiring Fund.

     (i)  At the Closing Date, all federal and other tax returns and reports of
the Acquired Fund required by law to have been filed prior to the Closing Date
shall have been filed, and all federal and other taxes shown as due on such
returns shall have been paid, or provision shall have been made for the payment
thereof, and to the best of the Acquired Fund's knowledge, no such return is
currently under audit and no assessment has been asserted with respect to such
returns.

                                       6
<PAGE>
 
     (j)  For the most recent fiscal year of its operation, the Acquired Fund
has met the requirements of Subchapter M of the Code for qualification and
treatment as a regulated investment company.

     (k)  All issued and outstanding shares of the Acquired Fund are, and at the
Closing Date will be, duly and validly issued and outstanding, fully paid and
non-assessable.  All of the issued and outstanding shares of the Acquired Fund
will, at the time of Closing, be held of record by the persons and in the
amounts set forth in the records of the transfer agent as provided in paragraph
3.4.  The Acquired Fund does not have outstanding any options, warrants or other
rights to subscribe for or purchase any shares of the Acquired Fund, nor is
there outstanding any security convertible into any shares of the Acquired Fund.

     (l)  At the Closing Date, the Acquired Fund will have good and marketable
title to its assets to be transferred to the Acquiring Fund pursuant to
paragraph 1.1 and full right, power and authority to sell, assign, transfer and
deliver such assets hereunder and, upon delivery and payment for such assets,
the Acquiring Fund will acquire good and marketable title thereto, subject to no
restrictions on the full transfer thereof, including such restrictions as might
arise under the 1933 Act, other than as disclosed to the Acquiring Fund prior to
the date hereof.

     (m)  The execution, delivery and performance of this Agreement has been
duly authorized by all necessary action on the part of the Acquired Fund's Board
of Directors, and subject to the due approval of the Acquired Fund's
shareholders, this Agreement, assuming due authorization, execution and delivery
by the Acquiring Fund, constitutes a valid and binding obligation of the
Acquired Fund, enforceable in accordance with its terms, subject as to
enforcement to bankruptcy, insolvency, reorganization, moratorium and other laws
relating to or affecting creditors' rights and to general equity principles. The
Acquired Fund's Board of Directors has called a meeting of the Acquired Fund
shareholders to consider and act upon this Agreement.

     (n)  The information furnished and to be furnished by the Acquired Fund for
use in registration statements, proxy materials and other documents which may be
necessary in connection with the transactions contemplated hereby shall be
accurate and complete in all material respects and shall comply in all material
respects with federal securities and other laws and regulations thereunder
applicable thereto.

                                       7
<PAGE>
 
     (o)  The combined prospectus and proxy statement (the "N-14 pro spectus and
proxy statement") and the related statement of additional informa tion included
in the Registration Statement on Form N-14 of the Acquiring Fund (the "N-14
Registration Statement") did not on the effective date of the N-14 Registration
Statement contain any untrue statement of a material fact relating to the
Acquired Fund or the meeting of its shareholders referred to therein or omit to
state a material fact required to be stated therein or neces sary to make the
statements therein relating to the Acquired Fund or such special meeting, in
light of the circumstances under which such statements were made, not materially
misleading.

     (p)  The Acquiring Fund Class A Shares to be issued to the Acquired Fund
hereunder are not being acquired for the purpose of making any dis tribution
thereof other than in accordance with the terms of this Agreement.

     4.2.  With respect to the Acquiring Fund, the Income Fund represents and
warrants to the Acquired Fund as follows:

     (a)  The Trust is a registered investment company classified as a
management company of the open-end type, and its registration with the
Commission as an investment company under the 1940 Act is in full force and
effect.

     (b)  The Acquiring Fund is a series of the Income Fund.  The Trust is duly
validly existing and in good standing under the laws of the State of Maryland
and has the power to own all of its properties and assets and to carry out this
Agreement.

     (c)  The current prospectus and statement of additional information of the
Income Fund relating to the Acquiring Fund conform (and any prospectus or
statement of additional information of the Income Fund Relating to the Acquiring
Fund issued prior to the Closing Date will conform) in all material respects to
the applicable requirements of the 1933 Act and the 1940 Act and the rules and
regulations of the Commission thereunder and do not (and will not) include any
untrue statement of a material fact or omit to state any material fact required
to be stated therein or necessary to make the statements therein, in light of
the circumstances under which they were (and will be) made, not materially
misleading.

     (d)  The Trust is not, and the execution, delivery and performance of this
Agreement will not result, in a material violation of its Declaration of

                                       8
<PAGE>
 
Trust or By-laws or of any agreement, instrument, contract or other undertak ing
to which the Income Fund is a party or by which it is bound.

     (e)  The Trust has no material contracts or other commitments which will be
terminated with liability to the Income Fund on, prior to or after the Closing
Date.

     (f)  Except as otherwise disclosed in writing to and accepted by the
Acquired Fund, no litigation or administrative proceeding or investigation
before any court or governmental body is presently pending or to its knowl edge
threatened against the Income Fund or any of the Acquiring Fund's properties or
assets, which, if adversely determined, would materially and adversely affect
its financial condition or the conduct of its business.  The Trust knows of no
facts which might form the basis of the institution of such a proceeding and is
not party to or subject to the provisions of any order, decree or judgment of
any court or governmental body which materially and adversely affects its
business or its ability to consummate the transactions contemplated herein.

     (g)  True and correct copies of the Income Fund's (i) Statement of Net
                                                        -                  
Assets as at September 30, 1995, and (ii) Statements of Operation and Changes in
                                      --                                        
Net Assets for the 12-month period then ended, including the accompanying notes,
have been furnished to the Acquired Fund.  Such State ment of Net Assets and
such Statements of Operations and Changes in Net Assets (and the accompanying
notes) have been audited by Deloitte & Touche LLP, independent certified public
accountants.  Such statements have been prepared in accordance with generally
accepted accounting principles con sistently applied, and such statements fairly
reflect the financial condition and the operations and changes in net assets of
the Income Fund as of such date and for such period, respectively.  There are no
known contingent liabilities of the Income Fund as of such date required to be
reflected or disclosed in such Statements of Net Assets or notes in accordance
with generally accepted accounting principles that are not so reflected or
disclosed.

     (h)  Since September 30, 1995, there has not been any material adverse
change in the Income Fund's financial condition, assets, liabilities or business
other than changes occurring in the ordinary course of business, or any
incurrence by the Income Fund's of indebtedness maturing more than one year from
the date such indebtedness was incurred, except as otherwise disclosed to and
accepted by the Acquired Fund.

                                       9
<PAGE>
 
     (i)  At the Closing Date, all federal and other tax returns and reports of
the Income Fund required by law to have been filed prior to the Closing Date
shall have been filed, and all federal and other taxes shown as due on such
returns and reports shall have been paid, or provision shall have been made for
the payment thereof, and to the best of the Income Fund's knowledge, no such
return is currently under audit and no assessment has been asserted with respect
to such returns.

     (j)  For the most recent fiscal year of its operation, the Income Fund has
met the requirements of Subchapter M of the Code for qualification and treatment
as a regulated investment company and the Acquiring Fund intends to do so in the
future.

     (k)  At the Closing Date, all issued and outstanding shares of the
Acquiring Fund will be duly and validly issued and outstanding, fully paid and
non-assessable, with no personal liability attaching to the ownership thereof.
The Acquiring Fund does not have outstanding any options, warrants or other
rights to subscribe for or purchase any shares of the Acquiring Fund, nor is
there outstanding any security convertible into shares of the Acquiring Fund.

     (l)  The execution, delivery and performance of this Agreement has been
duly authorized by all necessary action on the part of the Income Fund's Board
of Directors, and assuming due authorization, execution and delivery by the
Acquired Fund, this Agreement constitutes a valid and binding obligation of the
Income Fund on behalf of the Acquiring Fund, enforceable in accor dance with its
terms, subject as to enforcement to bankruptcy, insolvency, reorganization,
moratorium and other laws relating to or affecting creditors' rights and to
general equity principles.

     (m)  The N-14 Registration Statement (except insofar as it relates to the
Acquired Fund or the special meeting of its shareholders referred to therein)
did not on the effective date of the N-14 Registration Statement contain any
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements therein, in light of the
circumstances under which such statements were made, not materially misleading.

     (n)  The Acquiring Fund Class A Shares to be issued and delivered to the
Acquired Fund pursuant to the terms of this Agreement have been duly authorized
by the Income Fund's Board of Directors on behalf of the Acquiring Fund, and
when issued and delivered at the Closing in accordance with

                                       10
<PAGE>
 
     this Agreement, will be duly and validly issued Acquiring Fund Class A
Shares and will be fully paid and non-assessable with no personal liability
attaching to the ownership thereof.

     (o)  The Board of the Income Fund has duly adopted articles of amendment to
the Articles of Incorporation of the Income Fund (i) authorizing the Board to
create multiple classes within series (which amendment has been duly approved by
the shareholders of the Income Fund) and (ii) designating the initial class of
shares, both outstanding and unissued shares, as Class A Shares.  Such articles
have been duly filed with the State Department of Assessments and Taxation of
Maryland and copies of same have been furnished to the Acquired Fund.

5.  COVENANTS

     5.1.  The Acquiring Fund will conduct no investment operations prior to the
Closing Date.  The Acquired Fund will operate its business in the ordinary
course between the date hereof and the Closing Date.  It is understood that such
ordinary course of business will include the declaration and payment of
customary dividends and distributions and any other dividends and distributions
deemed advisable.

     5.2.  At or after the Closing, the Acquired Fund will deliver or otherwise
make available to the Acquiring Fund a statement of the Acquired Fund's assets
and liabilities, together with a list of the Acquired Fund's portfolio
securities showing the tax costs of such securities to it and the holding
periods of such securities, as of the Closing Date.

     5.3.  The Acquired Fund will assist the Acquiring Fund in obtaining such
information as the Acquiring Fund reasonably requests concerning the beneficial
ownership of the Acquired Fund's shares.

     5.4.  Subject to the provisions of this Agreement, the Acquired Fund and
the Acquiring Fund each will take, or cause to be taken, all action, and do or
cause to be done all things, reasonably necessary, proper or advisable to
consummate and make effective the transactions contemplated by this Agreement.

     5.5.  The Acquired Fund will provide the Acquiring Fund with any additional
information reasonably necessary for any revision of the N-14 Prospectus and
Proxy Statement referred to in paragraph 4.1(o), all to be included in any
amendment to the N-14 Registration Statement, in compliance with the 1933 Act,
the Securities Ex change Act of 1934 (the "1934 Act") and the 1940 Act in
connection with the meeting of the Acquired Fund's shareholders to consider
approval of this Agreement and the Reorganization.

                                       11
<PAGE>
 
6.  CONDITIONS PRECEDENT TO OBLIGATIONS OF THE ACQUIRED FUND

     The obligations of the Acquired Fund to consummate the transactions
provided for herein shall be subject, at its election, to the performance by the
Income Fund, on behalf of the Acquiring Fund, in all material respects of all of
the obli gations to be performed by it hereunder on or before the Closing Date
and, in addition thereto, the following further conditions:

     6.1.  All representations and warranties of the Income Fund contained in
this Agreement shall be true and correct in all material respects as of the date
hereof and, except as they may be affected by the transactions contemplated by
this Agreement, as of the Closing Date with the same force and effect as if made
on and as of the Closing Date.

     6.2.  The Trust shall have delivered to the Acquired Fund a certificate
executed in its name by its Chairman, President or a Vice President and its
Treasurer or an Assistant Treasurer, in form reasonably satisfactory to the
Acquired Fund and dated as of the Closing Date, to the effect that the
representations and warranties of the Income Fund made in this Agreement are
true and correct at and as of the Closing Date, except as they may be affected
by the transactions contemplated by this Agreement.

7.  CONDITIONS PRECEDENT TO OBLIGATIONS OF THE INCOME FUND

     The obligations of the Income Fund, on behalf of the Acquiring Fund, to
consummate the transactions provided for herein shall be subject, at its
election, to the performance by the Acquired Fund in all material respects of
all the obligations to be performed by it hereunder on or before the Closing
Date and, in addition thereto, the following further conditions:

     7.1.  All representations and warranties of the Acquired Fund contained in
this Agreement shall be true and correct in all material respects as of the date
hereof and, except as they may be affected by the transactions contemplated by
this Agreement, as of the Closing Date with the same force and effect as if made
on and as of the Closing Date.

                                       12
<PAGE>
 
     7.2.  The Acquired Fund shall have delivered to the Acquiring Fund on the
Closing Date a certificate executed in its name by its Chairman, President or a
Vice President and its Treasurer or an Assistant Treasurer, in form and
substance satisfactory to the Acquiring Fund and dated as of the Closing Date,
to the effect that the representations and warranties of the Acquired Fund made
in this Agreement are true and correct at and as of the Closing Date, except as
they may be affected by the transactions contemplated by this Agreement.

8.  FURTHER CONDITIONS PRECEDENT TO OBLIGATIONS OF THE INCOME FUND AND THE
ACQUIRED FUND

     If any of the conditions set forth below do not exist on the Closing Date
with respect to the Acquiring Fund or the Acquired Fund, either party to this
Agreement shall, at its option, not be required to consummate the transactions
contemplated by this Agreement:

     8.1.  This Agreement and the transactions contemplated herein shall have
been approved by the requisite vote of the holders of the outstanding shares of
the Ac quired Fund.  Notwithstanding anything herein to the contrary, neither
the Acquiring Fund nor the Acquired Fund may waive the conditions set forth in
this paragraph 8.1.

     8.2.  On the Closing Date, no action, suit or other proceeding shall be
pending before any court or governmental agency in which it is sought to
restrain or prohibit, or obtain damages or other relief in connection with, this
Agreement or the trans actions contemplated herein.

     8.3.  All consents of other parties and all other consents, orders, rulings
and permits of federal, state and local regulatory authorities (including those
of the Commission, the Internal Revenue Service and state Blue Sky and
securities authori ties) deemed necessary by the Acquiring Fund or the Acquired
Fund to permit consummation, in all material respects, of the transactions
contemplated hereby shall have been obtained, except where failure to obtain any
such consent, order, ruling or permit would not involve a risk of a material
adverse effect on the assets or properties of the Acquiring Fund or the Acquired
Fund.

     8.4.  The N-14 Registration Statement shall have become effective under the
1933 Act and no stop orders suspending the effectiveness thereof shall have been
issued and, to the best knowledge of the parties hereto, no investigation or
proceeding for that purpose shall have been instituted or be pending, threatened
or contemplated under the 1933 Act.

                                       13
<PAGE>
 
     8.5.  The parties shall have received a favorable opinion of Debevoise &
Plimpton, addressed to the Acquired Fund and the Income Fund and satisfactory to
the Secretary of each such party, substantially to the effect that for federal
income tax purposes:

     (a) the acquisition by the Acquiring Fund of all of the assets of the
Acquired Fund solely in exchange for the issuance of Acquiring Fund Class C
Shares to the Acquired Fund and the assumption of all of the Acquired Fund
liabilities by the Acquiring Fund, followed by the distribution by the Acquired
Fund, in complete liquidation, of the Acquiring Fund Class C Shares to the
Acquired Fund shareholders in exchange for their Acquired Fund shares, will be
treated as a "reorganization" within the meaning of Section 368(a) of the Code,
and the Acquiring Fund and the Acquired Fund will each be a "party to a
reorganization" within the meaning of Section 368(b) of the Code;

     (b) no gain or loss will be recognized by the Acquiring  Fund upon the
receipt of the assets of the Acquired Fund in exchange for the Acquiring Fund
Shares and the assumption by the Acquiring Fund of liabilities of the Acquired
Fund;

     (c) no gain or loss will be recognized by the Acquiring Fund upon the
transfer of the Acquired Fund's assets to the Acquiring Fund in exchange for the
Acquiring Fund Shares and the assumption by the Acquiring Fund of liabilities of
the Acquired Fund or upon the distribution of the Acquiring Fund Shares to the
Acquired Fund's shareholders;

     (d) no gain or loss will be recognized by shareholders of the Acquired Fund
upon the exchange of their Acquired Fund shares for the Acquiring Fund Shares;

     (e) the aggregate tax basis for the Acquiring Fund Shares received by each
of the Acquired Fund's shareholders pursuant to the Reorganization will be the
same as the aggregate tax basis of the Acquired Fund shares held by such
shareholder immediately prior to the Reorganization, and the holding period of
the Acquiring Fund Shares to be received by each Acquired Fund shareholder will
include the period during which the Acquired Fund shares exchanged therefor were
held by such shareholder (provided that the Acquired Fund shares were held as
capital assets on the date of the Reorganization); and

     (f) the tax basis of the Acquired Fund's assets acquired by the Acquiring
Fund will be the same as the tax basis of such assets to the Acquired

                                       14
<PAGE>
 
Fund immediately prior to the Reorganization, and the holding period of the
assets of the Acquired Fund in the hands of the Acquiring Fund will include the
period during which those assets were held by the Acquired Fund.

     Notwithstanding anything herein to the contrary, neither the Acquiring Fund
nor the Income Fund may waive the conditions set forth in this paragraph 8.5.

     8.6.  The Trust shall have duly adopted a Rule 12b-1 Plan for the Acquiring
Fund Class A Shares acceptable to the Acquired Fund.

9.  BROKERAGE FEES AND EXPENSES

     9.1.  The Trust, on behalf of the Acquiring Fund, represents and warrants
to the Acquired Fund, and the Acquired Fund represents and warrants to the
Income Fund, that there are no brokers or finders entitled to receive any
payments in connection with the transactions provided for herein.

     9.2.  Except as may be otherwise provided herein, the Acquiring Fund and
the Acquired Fund each shall pay, or provide for the payment of, the expenses
incurred by it in connection with entering into and carrying out the provisions
of this Agree ment.

10.  ENTIRE AGREEMENT; SURVIVAL OF WARRANTIES

     10.1.  The parties hereto agree that no party has made any representation,
warranty or covenant not set forth herein and that this Agreement constitutes
the entire agreement between the parties.

     10.2.  None of the representations and warranties  included or provided for
herein shall survive the consummation of the transactions contemplated hereby.

11.  TERMINATION

     11.1.  This Agreement may be terminated at any time prior to the Closing
Date:  (1) by the mutual agreement of the Income Fund and the Acquired Fund; (2)
        -                                                                     - 
by the Acquired Fund in the event that the Income Fund shall, or by the Income
Fund in the event that the Acquired Fund shall, materially breach any
representation or warranty contained herein or any agreement contained herein
and to be performed at or prior to the Closing Date; or (3) by either party if a
                                                         -                      
condition herein expressed to be precedent to the obligations of the terminating
party has not been met and it reasonably appears that it will not or cannot be
met.

                                       15
<PAGE>
 
     11.2.  In the event of any such termination, there shall be no liability
for damages on the part of either the Income Fund, the Acquired Fund or the
Acquiring Fund or their respective Directors or officers to the other party, but
the Acquiring Fund and the Acquired Fund shall each bear, or provide for the
payment of, the expenses incurred by it incidental to the preparation and
carrying out of this Agree ment as provided in paragraph 9.2.

12.  AMENDMENTS; WAIVERS

     12.1.  This Agreement may be amended, modified or supplemented in such
manner as may be mutually agreed upon in writing by the authorized officers of
the Income Fund and the Acquired Fund; provided, however, that following the
approval of the Acquired Fund Shareholders referred to in paragraph 8.1, no such
amendment may have the effect of changing the provisions for determining the
number of the Acquiring Fund Class A Shares to be issued to the Acquired Fund's
shareholders under this Agreement to the detriment of such shareholders without
their further approval.

     12.2.  At or at any time prior to the Closing either party hereto may by
written instrument signed by it (i) waive any inaccuracies in the
                                 -                               
representations and warranties made to it contained herein and (ii) waive
                                                                --       
compliance with any of the covenants or conditions made for its benefit
contained herein.

13.  NOTICES
    
     Any notice, report, statement or demand required or permitted by any
provisions of this Agreement shall be in writing and shall be given by personal
delivery addressed to Lord Abbett California Tax-Free Income Fund, Inc., 767
Fifth Avenue, New York, New York, 10153, Attention: Office of the Secretary; or
to Lord Abbett Tax-Free Income Fund, Inc. on behalf of its California Series,
767 Fifth Avenue, New York, New York, 10153, Attention: Office of the Secretary.
     
14.  HEADINGS; COUNTERPARTS; GOVERNING LAW; ASSIGNMENT; LIMITATION OF LIABILITY

     14.1.  The article and paragraph headings contained in this Agreement are
for reference purposes only and shall not affect in any way the meaning or
interpretation of this Agreement.

     14.2.  This Agreement may be executed in any number of counterparts, each
of which shall be deemed an original.

                                       16
<PAGE>
 
     14.3.  This Agreement shall be governed by and construed in accordance with
the laws of the State of New York.

     14.4.  (a)  This Agreement shall bind and inure to the benefit of the
parties hereto and their respective successors and assigns, but no assignment or
transfer hereof or of any rights or obligations hereunder shall be made by any
party without the written consent of the other party.  Nothing herein expressed
or implied is intended or shall be construed to confer upon or give any person,
firm, corporation or other entity, other than the parties hereto and their
respective successors and assigns, any rights or remedies under or by reason of
this Agreement.

     IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement to
be executed by its Chairman of the Board, President or Vice President and
attested by its Secretary or Assistant Secretary.


Attest:                        LORD ABBETT TAX-FREE INCOME FUND, INC. 
                               on behalf of California Series
              
              
                               By:   
                                  _______________________________
                                  Name: 
                                  Title: 

Name:  
       _____________    
Title: Secretary        



Attest:                        LORD ABBETT CALIFORNIA TAX-FREE 
                               INCOME FUND, INC.
                               
                               
                               
                               By:   
                                  _______________________________
                                  Name: 
                                  Title: 


Name:  
       _____________      
Title: Secretary       

                                       17
<PAGE>
 
                                                                     EXHIBIT A-2
                                                                     -----------

                     AGREEMENT AND PLAN OF REORGANIZATION

     THIS AGREEMENT AND PLAN OF REORGANIZATION (the "Agreement") is made as of
this      day of           , 1996, by and between Lord Abbett Tax-Free Income
Fund, Inc. (the "Income Fund"),  a Maryland corporation, on behalf of its series
California Series (the "Acquiring Fund"), and Lord Abbett Securities Trust (the
"Securities Trust"), a Delaware business trust, on behalf of its series
California Tax-Free Trust (the "Acquired Fund").

     WHEREAS, this Agreement is intended to be and is adopted as a plan of
reorganization and liquidation within the meaning of Section 368(a)(1)(C) and
(F) of the United States Internal Revenue Code of 1986, as amended (the "Code");

     WHEREAS, the reorganization (the "Reorganization") will consist of the
transfer of all of the assets of the Acquired Fund in exchange for Class C
shares of capital stock of the Acquiring Fund (the "Acquiring Fund Class C
Shares" and each an "Acquiring Fund Class C Share") and the assumption by the
Acquiring Fund of all of the liabilities of the Acquired Fund and the
distribution, after the Closing Date herein referred to, of Acquiring Fund Class
C Shares to the shareholders of the Acquired Fund in  termination of the
Acquired Fund, all upon the terms and conditions hereinafter set forth in this
Agreement;

     WHEREAS, the Securities Trust and the Income Fund are open-end, registered
investment companies of the management type;

     WHEREAS, the Acquired Fund is a series of the Securities Trust and the
Acquired Fund owns securities that generally are of the character in which the
Acquiring Fund is permitted to invest;

     WHEREAS, the Acquiring Fund is a new series of the Income Fund that has no
investment portfolio or other assets but plans to acquire the assets, and to
assume the liabilities, of Lord Abbett California Tax-Free Income Fund, Inc.
("LAUSGSF") immediately prior to the Reorganization;

     WHEREAS, the Acquiring Fund is authorized to issue a single class of shares
(the "Acquiring Fund Class A Shares"), and prior to the consummation of the
Reorganization, will amend its Articles of Incorporation to provide for the
authorization and issuance of shares of additional classes of capital stock,
including Acquiring Fund Class C Shares, which will share pro rata with each
other class in the
<PAGE>
 
portfolio, income and expenses of the Acquiring Fund, except that each class
will bear the expense of its own distribution and shareholder servicing
arrangements and certain other expenses;

     WHEREAS, after the multiple class share structure is authorized by the
Acquiring Fund but before the Acquiring Fund Class C Shares are issued to the
Acquired Fund pursuant to the Reorganization, the acquired Fund is to purchase
one Acquiring Fund Class C share and as sole shareholder approve a plan pursuant
to Section 12(b) of the Investment Company Act of 1940 (the "1940 Act") and Rule
12b-1 thereunder (a "Rule 12b-1 Plan") applicable to the Acquiring Fund Class C
Shares;

     WHEREAS, the Board of Trustees, including a majority of the Trustees who
are not "interested persons" (as defined under the 1940 Act ), of the Securities
Trust has determined that the Reorganization is in the best interests of the
Acquired Fund's shareholders and that the interests of the existing shareholders
of the Acquired Fund will not be diluted as a result of this transaction; and

     WHEREAS, the Board of Directors, including a majority of the directors who
are not "interested persons" (as defined under the 1940 Act) of the Income Fund,
has determined that the Reorganization is in the best interests of the Acquiring
Fund's shareholders and that the interests of the existing shareholders of the
Acquiring Fund will not be diluted as a result of this transaction;

     NOW THEREFORE, in consideration of the premises and of the agreements
hereinafter set forth, the parties hereto agree as follows:

1.  REORGANIZATION.
    
     1.1.  Subject to the terms and conditions herein set forth and on the basis
of the representations and warranties contained herein, the Securities Trust
will transfer assets of the Acquired Fund as set forth in paragraph 1.2 to the
Acquiring Fund, and the Acquiring Fund will in exchange therefor, (i) deliver to
                                                                   -            
the Acquired Fund the number of Acquiring Fund Class C Shares, including
fractional Acquiring Fund Class C Shares, determined by dividing the net value
of the Acquired Fund's assets so transferred computed in the manner and as of
the time and date set forth in paragraph 2.1, by the net asset value of one
Acquiring Fund Class A Share, computed in the manner and as of the time and date
set forth in paragraph 2.2; and (ii) assume all of the liabilities of the
                                 --                                      
Acquired Fund.  Such transactions shall take place at the closing provided for
in paragraph 3.1 (the "Closing").      

                                       2
<PAGE>
 
     1.2.  (a)  The assets of the Acquired Fund to be acquired by the Acquiring
Fund shall consist of all of its property, including, without limitation, all
cash, securities and dividends or interest receivables and any deferred or
prepaid expenses shown as an asset on the books of the Acquired Fund on the
closing date provided in paragraph 3.1 (the "Closing Date").

     (b)  The Acquiring Fund has a list of all of the Acquired Fund's assets as
of the date of execution of this Agreement.  The Acquired Fund has a statement
of the Acquiring Fund's investment objectives, policies and restrictions.  The
Acquired Fund reserves the right to sell any of its securities but will not,
without the prior approval of the Acquiring Fund, acquire any additional
securities other than securities of the type in which the Acquiring Fund is
permitted to invest.  The Acquiring Fund will, within a reasonable time prior to
the Closing Date, furnish the Acquired Fund with a list of the securities, if
any, on the Acquired Fund's list referred to in the first sentence of this
paragraph which do not conform to the Acquiring Fund's investment objectives,
policies and restrictions.  In the event that the Acquired Fund holds any
investments which the Acquiring Fund may not hold, the Acquired Fund will
dispose of such securities prior to the Closing Date.  In addition, if it is
determined that the portfolios of the Acquired Fund and the Acquiring Fund, when
aggregated, would contain investments exceeding certain percentage limitations
imposed upon the Acquiring Fund with respect to such investments, the Acquired
Fund, if requested by the Acquiring Fund, will dispose of and/or reinvest a
sufficient amount of such in vestments as may be necessary to avoid violating
such limitations as of the Closing Date.

     1.3.  As provided in paragraph 3.4, as soon after the Closing Date as is
conveniently practicable, the Acquired Fund will distribute pro rata to the
Acquired Fund's shareholders of record determined as of the close of business on
the Closing Date, the Acquiring Fund Class C Shares it receives pursuant to
paragraph 1.1.  Such distribution will be accomplished by establishing Acquiring
Fund shareholder accounts in the names of each Acquired Fund shareholder,
representing the respective pro rata number of full and fractional Acquiring
Fund Class C Shares due each shareholder. All issued and outstanding shares of
the Acquired Fund will simultaneously be canceled on the books of the Acquired
Fund.  The Acquiring Fund shall not issue certificates representing the
Acquiring Fund Shares in connection with such exchange.

     1.4.  Any transfer taxes payable upon issuance of Acquiring Fund Class C
Shares in a name other than the registered holder of the shares of the Acquired
Fund on the books of the Acquired Fund as of that time shall, as a condition of
such issuance and transfer, be paid by the person to whom such Acquiring Fund
Class C Shares are to be issued and transferred.

                                       3
<PAGE>
 
     1.5.  The Acquired Fund shall, following the Closing Date and the making of
all distributions pursuant to paragraph 1.3, be terminated by a majority of the
Securities Trust's Trustees' executing an instrument pursuant to Section 5.4 of
the Declaration and Agreement of Trust of the Securities Trust abolishing the
Acquired Fund.  Any reporting responsibility of the Securities Trust with
respect to the Acquired Fund is and shall remain the responsibility of the
Securities Trust up to and including the Closing Date and following the
termination of the Acquired Fund.

2.  VALUATION

     2.1.  The net value of the Acquired Fund's assets to be acquired by the
Acquiring Fund hereunder shall be the value of such assets, less the Acquired
Fund's liabilities assumed by the Acquiring Fund, computed as of the close of
regular trading on New York Stock Exchange, Inc. (the "NYSE") on the Closing
Date (such time and date being hereinafter called the "Valuation Date"), using
the valuation procedures set forth in the Income Fund's Articles of
Incorporation.

     2.2.  The net asset value of one Acquiring Fund Class A Share shall be the
net asset value per share computed as of the close of regular trading on the
NYSE on the Valuation Date, using the valuation procedures set forth in the
Income Fund's Articles of Incorporation.

     2.3.  All computations of value shall be made by the Acquiring Fund and the
Acquired Fund in accordance with the regular practice of the LAUSGSF.

3.  CLOSING AND CLOSING DATE

     3.1.  The Closing Date shall be July 12, 1996, or such other date as the
parties may agree to in writing.  All acts taking place at the Closing shall be
deemed to take place simultaneously as of the close of business on the Closing
Date unless otherwise provided.  The Closing shall be held as of 5:00 p.m. at
the offices of [specify location in New Jersey], or at such other time and/or
place as the parties may agree.

     3.2.  In the event that on the Valuation Date (a) the NYSE or another
                                                    -                     
primary trading market for portfolio securities of the Acquiring Fund or the
Acquired Fund shall be closed to trading or trading thereon shall be restricted
or (b) trading or the reporting of trading on the NYSE or elsewhere shall be
    -                                                                       
disrupted so that accurate appraisal of the value of the net assets of the
Acquiring Fund or the Acquired Fund is impracticable, the Closing Date shall be
postponed until the first business day after

                                       4
<PAGE>
 
the day when trading shall have been fully resumed and reporting shall have been
restored.

     3.3.  At the Closing, the Acquired Fund shall direct its custodian to
deliver to the custodian of the Acquiring Fund, for the Acquiring Fund's
account, all of its portfolio securities and other assets held by such custodian
for the Acquired Fund's account, duly endorsed in proper form for transfer as
appropriate, in such condition as to constitute good delivery thereof in
accordance with the custom of the Acquiring Fund's custodian, and shall be
accompanied by all necessary federal and state stock transfer stamps or a check
for the appropriate purchase price thereof.

     3.4.  The Acquired Fund shall direct its transfer agent to deliver to the
transfer agent of the Acquiring Fund on the Closing Date a list of the names and
addresses of the Acquired Fund's shareholders and the number of outstanding
shares owned by each such shareholder immediately prior to the Closing.  The
Acquiring Fund shall direct its transfer agent to issue and deliver a
confirmation evidencing the Acquiring Fund Class C Shares to be credited to the
Acquired Fund's account on the Closing Date to the transfer agent of the
Acquired Fund, or provide evidence satis factory to the Acquired Fund that such
Acquiring Fund Class C Shares have been credited to the Acquired Fund's account
on the books of the Acquiring Fund.  At the Closing, each party shall deliver to
the other such bills of sale, checks, assignments, share certificates, if any,
receipts, assumption agreements or other documents as such other party or its
counsel may reasonably request.
    
4.  REPRESENTATIONS AND WARRANTIES      

     4.1.  With respect to the Acquired Fund, the Securities Trust represents
and warrants to the Income Fund as follows:

     (a)  The Securities Trust is a registered investment company classified as
a management company of the open-end type, and its registration with the
Securities and Exchange Commission (the "Commission") as an investment company
under the 1940 Act is in full force and effect.

     (b)  The Acquired Fund is a series of the Securities Trust.  The Securities
Trust is duly organized, validly existing and in good standing under the laws of
the State of Delaware and has the power to own all of its prop erties and assets
and to carry out this Agreement.

     (c)  The current prospectus and statement of additional information of the
Securities Trust conform (and any prospectus or statement of additional

                                       5
<PAGE>
 
information of the Securities Trust issued prior to the Closing Date will
conform) in all material respects to the applicable requirements of the Secu
rities Act of 1933 Act, as amended (the "1933 Act"), and the 1940 Act and the
rules and regulations of the Commission thereunder and do not (and will not)
include any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary to make the statements therein,
in light of the circumstances under which they were (or will be) made, not
materially misleading.

     (d)  The Securities Trust is not, and the execution, delivery and
performance of this Agreement will not result, in a material violation of its
Declaration and Agreement of Trust or By-laws or of any agreement, instru ment,
contract or other undertaking to which the Securities Trust is a party or by
which it is bound.

     (e)  The Securities Trust has no material contracts or other com mitments
which will be terminated with liability to the Securities Trust on, prior to or
after the Closing Date.

     (f)  Except as otherwise disclosed in writing to and accepted by the Income
Fund, no litigation or administrative proceeding or investigation before any
court or governmental body is presently pending or to its knowledge threatened
against the Securities Trust or any of the Acquired Fund's prop erties or
assets, which if adversely determined would materially and adversely affect the
financial condition of the Acquired Fund or the conduct of the Acquired Fund's
business.  The Securities Trust knows of no facts which might form the basis of
the institution of such a proceeding and is not party to or subject to the
provisions of any order, decree or judgment of any court or governmental body
which materially and adversely affects the business of the Acquired Fund or the
ability of the Securities Trust to consummate the transactions contemplated
herein.

     (g)  True and correct copies of the Acquired Fund's (i) Statement of Net
                                                          -                  
Assets as at October 31, 1995 and (ii) Statements of Operations and Changes in
                                   --                                         
Net Assets for the 12-month period then ended, including the accompanying notes,
have been furnished to the Acquiring Fund.  Such Statement of Net Assets and
such Statements of Operations and Changes in Net Assets (and the accompanying
notes) have been audited by Deloitte & Touche LLP, independent certified public
accountants.  Such statements have been prepared in accordance with generally
accepted accounting principles consistently applied, and such statements fairly
reflect the financial condition

                                       6
<PAGE>
 
and the operations and changes in net assets of the Acquired Fund as of such
date and for such period, respectively.  There are no known contingent
liabilities of the Acquired Fund as of such date required to be reflected or
disclosed in such Statement of Net Assets or notes in  accordance with gen
erally accepted accounting principles that are not so reflected or disclosed.

     (h)  Since October 31, 1995, there has not been any material adverse change
in the Acquired Fund's financial condition, assets, liabilities or busi ness
other than changes occurring in the ordinary course of business, or any
incurrence by the Acquired Fund of indebtedness maturing more than one year from
the date such indebtedness was incurred, except as otherwise disclosed to and
accepted by the Acquiring Fund.

     (i)  The Securities Trust will file the final federal and other tax returns
of the Acquired Fund for the period ending on the Closing Date in accordance
with the Code.  At the Closing Date, all federal and other tax returns and
reports of the Acquired Fund required by law to have been filed prior to the
Closing Date shall have been filed, and all federal and other taxes shown as due
on such returns shall have been paid, or provision shall have been made for the
payment thereof, and to the best of the Securities Trust's knowledge, no such
return is currently under audit and no assessment has been asserted with respect
to such returns.

     (j)  For the most recent fiscal year of its operation, the Acquired Fund
has met the requirements of Subchapter M of the Code for qualification and
treatment as a regulated investment company.

     (k)  All issued and outstanding shares of the Acquired Fund are, and at the
Closing Date will be, duly and validly issued and outstanding, fully paid and
non-assessable.  All of the issued and outstanding shares of the Acquired Fund
will, at the time of Closing, be held of record by the persons and in the
amounts set forth in the records of the transfer agent as provided in paragraph
3.4.  The Acquired Fund does not have outstanding any options, warrants or other
rights to subscribe for or purchase any shares of the Acquired Fund, nor is
there outstanding any security convertible into any shares of the Acquired Fund.

     (l)  At the Closing Date, the Acquired Fund will have good and marketable
title to its assets to be transferred to the Acquiring Fund pursuant to
paragraph 1.1 and full right, power and authority to sell, assign, transfer and
deliver such assets hereunder and, upon delivery and payment for such

                                       7
<PAGE>
 
assets, the Acquiring Fund will acquire good and marketable title thereto,
subject to no restrictions on the full transfer thereof, including such
restrictions as might arise under the 1933 Act, other than as disclosed to the
Acquiring Fund prior to the date hereof.

     (m)  The execution, delivery and performance of this Agreement has been
duly authorized by all necessary action on the part of Securities Trust's
Trustees, and subject to the due approval of the Acquired Fund's shareholders,
this Agreement, assuming due authorization, execution and delivery by the
Acquiring Fund, constitutes a valid and binding obligation of the Securities
Trust on behalf of the Acquired Fund, enforceable in accordance with its terms,
subject as to enforcement to bankruptcy, insolvency, reorganization, moratorium
and other laws relating to or affecting creditors' rights and to general equity
principles.  The Securities Trust's Board of Trustees has called a meeting of
the Securities Trust shareholders at which the shareholders of the Acquired Fund
are to consider and act upon this Agreement.

     (n)  The information furnished and to be furnished by the Securities Trust
on behalf of the Acquired Fund for use in registration statements, proxy
materials and other documents which may be necessary in connection with the
transactions contemplated hereby shall be accurate and complete in all material
respects and shall comply in all material respects with federal securities and
other laws and regulations thereunder applicable thereto.

     (o)  The combined prospectus and proxy statement (the "N-14 pro spectus and
proxy statement") and the related statement of additional infor mation included
in the Registration Statement on Form N-14 of the Acquiring Fund (the "N-14
Registration Statement") did not on the effective date of the N-14 Registration
Statement contain any untrue statement of a material fact relating to the
Acquired Fund or the meeting of the Securities Trust share holders referred to
therein or omit to state a material fact required to be stated therein or
necessary to make the statements therein relating to the Acquired Fund or such
special meeting, in light of the circumstances under which such statements were
made, not materially misleading.

     (p)  The Acquiring Fund Class C Shares to be issued to the Acquired Fund
hereunder are not being acquired for the purpose of making any dis tribution
thereof other than in accordance with the terms of this Agreement.

     4.2.  With respect to the Acquiring Fund, the Income Fund represents and
warrants to the Securities Trust as follows:

                                       8
<PAGE>
 
     (a)  The Income Fund is a registered investment company classified as a
management company of the open-end type, and its registration with the
Commission as an investment company under the 1940 Act is in full force and
effect.

     (b)  The Acquiring Fund is a series of the Income Fund.  The Income Fund is
duly organized, validly existing and in good standing under the laws of the
State of Maryland and has the power to own all of its properties and assets and
to carry out this Agreement.

     (c)  The current prospectus and statement of additional information of the
Income Fund relating to the Acquiring Fund conform (and any prospectus or
statement of additional information of the Income Fund relating to the Acquiring
Fund issued prior to the Closing Date will conform) in all material respects to
the applicable requirements of the 1933 Act and the 1940 Act and the rules and
regulations of the Commission thereunder and do not (and will not) include any
untrue statement of a material fact or omit to state any material fact required
to be stated therein or necessary to make the statements therein, in light of
the circumstances under which they were (and will be) made, not materially
misleading.

     (d)  The Income Fund is not, and the execution, delivery and per formance
of this Agreement will not result, in a material violation of its Articles of
Incorporation or By-laws or of any agreement, instrument, contract or other
undertaking to which the Income Fund is a party or by which it is bound.

     (e)  The Income Fund has no material contracts or other commitments which
will be terminated with liability to the Income Fund on, prior to or after the
Closing Date.

     (f)  Except as otherwise disclosed in writing to and accepted by the
Acquired Fund, no litigation or administrative proceeding or investigation
before any court or governmental body is presently pending or to its knowl edge
threatened against the Income Fund or any of the Acquiring Fund's properties or
assets, which, if adversely determined, would materially and adversely affect
its financial condition or the conduct of its business.  The Income Fund knows
of no facts which might form the basis of the institution of such a proceeding
and is not party to or subject to the provisions of any order, decree or
judgment of any court or governmental body which materially

                                       9
<PAGE>
 
and adversely affects its business or its ability to consummate the transactions
contemplated herein.

     (g)  True and correct copies of the Income Fund's (i) Statement of Net
                                                        -                  
Assets as at September 30, 1995, and (ii) Statements of Operation and Changes in
                                      --                                        
Net Assets for the 12-month period then ended, including the accompanying notes,
have been furnished to the Securities Trust.  Such Statement of Net Assets and
such Statements of Operations and Changes in Net Assets (and the accompanying
notes) have been audited by Deloitte & Touche LLP, independent certified public
accountants.  Such statements have been prepared in accordance with generally
accepted accounting principles consistently applied, and such statements fairly
reflect the financial condition and the operations and changes in net assets of
the Income Fund as of such date and for such period, respectively.  There are no
known contingent liabilities of the Income Fund as of such date required to be
reflected or disclosed in such Statements of Net Assets or notes in accordance
with gen erally accepted accounting principles that are not so reflected or
disclosed.

     (h)  Since September 30, 1995, there has not been any material adverse
change in the Income Fund's financial condition, assets, liabilities or business
other than changes occurring in the ordinary course of business, or any
incurrence by the Income Fund of indebtedness maturing more than one year from
the date such indebtedness was incurred, except as otherwise disclosed to and
accepted by the Acquired Fund.

     (i)  At the Closing Date, all federal and other tax returns and reports of
the Income Fund required by law to have been filed prior to the Closing Date
shall have been filed, and all federal and other taxes shown as due on such
returns and reports shall have been paid, or provision shall have been made for
the payment thereof, and to the best of the Income Fund's knowledge, no such
return is currently under audit and no assessment has been asserted with respect
to such returns.

     (j)  For the most recent fiscal year of its operation, the Income Fund has
met the requirements of Subchapter M of the Code for qualification and treatment
as a regulated investment company and the Acquiring Fund intends to do so in the
future.

     (k)  At the Closing Date, all issued and outstanding shares of the
Acquiring Fund will be, duly and validly issued and outstanding, fully paid and
non-assessable, with no personal liability attaching to the ownership

                                       10
<PAGE>
 
thereof.  The Acquiring Fund does not have outstanding any options, warrants or
other rights to subscribe for or purchase any shares of the Acquiring Fund, nor
is there outstanding any security convertible into shares of the Acquiring Fund.

     (l)  The execution, delivery and performance of this Agreement has been
duly authorized by all necessary action on the part of the Income Fund's Board
of Directors, and assuming due authorization, execution and delivery by the
Acquired Fund, this Agreement constitutes a valid and binding obligation of the
Income Fund on behalf of the Acquiring Fund, enforceable in accor dance with its
terms, subject as to enforcement to bankruptcy, insolvency, reorganization,
moratorium and other laws relating to or affecting creditors' rights and to
general equity principles.

     (m)  The N-14 Registration Statement (except insofar as it relates to the
Acquired Fund or the special meeting of its shareholders referred to therein)
did not on the effective date of the N-14 Registration Statement contain any
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements therein, in light of the
circumstances under which such statements were made, not materially mis leading.

     (n)  The Acquiring Fund Class C Shares to be issued and delivered to the
Acquired Fund pursuant to the terms of this Agreement have been duly authorized
by the Board of Directors of the Income Fund, and, when issued and delivered at
the Closing in accordance with this Agreement, will be duly and validly issued
Acquiring Fund Class C Shares and will be fully paid and non-assessable with no
personal liability attaching to the ownership thereof.
    
     (o)  The Board of Directors of the Income Fund has duly adopted (a)
articles of amendment to the Articles of Incorporation of the Income Fund (i)
authorizing the Board of Directors to create multiple classes within series
(which amendment has been duly approved by the shareholders of the Income Fund)
and (ii) designating the initial class of shares, both outstanding and unissued
shares, as Class A Shares and (b) articles supplementary creating the Acquiring
Fund Class C Shares.  Such articles have been duly filed with the State
Department of Assessments and Taxation of Maryland and copies of same have been
furnished to the Trust.      

                                       11
<PAGE>
 
5.  COVENANTS

     5.1.  The Acquiring Fund will conduct no investment operations prior to the
Closing Date.  The Acquired Fund will operate its business in the ordinary
course between the date hereof and the Closing Date.  It is understood that such
ordinary course of business will include the declaration and payment of
customary dividends and distributions and any other dividends and distributions
deemed advis able.

     5.2.  At or after the Closing, the Securities Trust will deliver or
otherwise make available to the Acquiring Fund a statement of the Acquired
Fund's assets and liabilities, together with a list of the Acquired Fund's
portfolio securities showing the tax costs of such securities to it and the
holding periods of such secu rities, as of the Closing Date.

     5.3.  The Acquired Fund will assist the Acquiring Fund in obtaining such
information as the Acquiring Fund reasonably requests concerning the beneficial
ownership of the Acquired Fund's shares.

     5.4.  Subject to the provisions of this Agreement, the Acquired Fund and
the Acquiring Fund each will take, or cause to be taken, all action, and do or
cause to be done all things, reasonably necessary, proper or advisable to
consummate and make effective the transactions contemplated by this Agreement.

     5.5.  Prior to the Closing Date, the Board of Trustees of the Securities
Trust will declare such dividends and distributions, payable no later than [90]
days after the Closing Date, to shareholders of record of the Acquired Fund as
of the Closing Date, which, together with all such previous dividends and
distributions, shall have the effect of distributing to the shareholders of the
Acquired Fund all of the investment company taxable income and exempt-interest
income of the Acquired Fund for all taxable years ending on or prior to the
Closing Date.  The dividends and distributions declared by the Acquired Fund
shall also include all of the Acquired Fund's net capital gain realized in all
taxable years ending on or prior to the Closing Date (after reduction for any
capital loss carry forward).  Such dividends and distributions declared prior to
the Closing Date shall be paid by the Acquiring Fund no later than [90] days
after the Closing Date.

     5.6.  As promptly as practicable, but in any case within sixty days after
the Closing Date, the Acquired Fund shall furnish the Acquiring Fund, in such
form as is reasonably satisfactory to the Acquiring Fund, a statement of the
earnings and

                                       12
<PAGE>
 
profits of the Acquired Fund for federal income tax purposes which will be
carried over to the Acquiring Fund as a result of Section 381 of the Code.

     5.7.  The Acquired Fund will provide the Acquiring Fund with any additional
information reasonably necessary for any revision of the N-14 Prospectus and
Proxy Statement referred to in paragraph 4.1(o), all to be included in any
amendment to the N-14 Registration Statement, in compliance with the 1933 Act,
the Securities Exchange Act of 1934 (the "1934 Act") and the 1940 Act in
connection with the meeting of the Acquired Fund's shareholders to consider
approval of this Agreement and the Reorganization.

6.  CONDITIONS PRECEDENT TO OBLIGATIONS OF THE SECURITIES TRUST

     The obligations of the Securities Trust, on behalf of the Acquired Fund, to
consummate the transactions provided for herein shall be subject, at its
election, to the performance by the Income Fund, on behalf of the Acquiring
Fund, in all material respects of all of the obligations to be performed by it
hereunder on or before the Closing Date and, in addition thereto, the following
further conditions:

     6.1.  All representations and warranties of the Income Fund contained in
this Agreement shall be true and correct in all material respects as of the date
hereof and, except as they may be affected by the transactions contemplated by
this Agreement, as of the Closing Date with the same force and effect as if made
on and as of the Closing Date.

     6.2.  The Acquiring Fund shall have delivered to the Acquired Fund a
certificate executed in its name by its Chairman, President or a Vice President
and its Treasurer or an Assistant Treasurer, in form reasonably satisfactory to
the Acquired Fund and dated as of the Closing Date, to the effect that the
representations and warranties of the Income Fund made in this Agreement are
true and correct at and as of the Closing Date, except as they may be affected
by the transactions contemplated by this Agreement.

7.  CONDITIONS PRECEDENT TO OBLIGATIONS OF THE INCOME FUND

     The obligations of the Income Fund, on behalf of the Acquiring Fund, to
consummate the transactions provided for herein shall be subject, at its
election, to the performance by the Securities Trust in all material respects of
all the obligations to be performed by it hereunder on or before the Closing
Date and, in addition thereto, the following further conditions:

                                       13
<PAGE>
 
     7.1.  All representations and warranties of the Securities Trust con tained
in this Agreement shall be true and correct in all material respects as of the
date hereof and, except as they may be affected by the transactions contemplated
by this Agreement, as of the Closing Date with the same force and effect as if
made on and as of the Closing Date.

     7.2.  The Securities Trust shall have delivered to the Acquiring Fund on
the Closing Date a certificate executed in its name by its Chairman, President
or a Vice President and its Treasurer or an Assistant Treasurer, in form and
substance satisfactory to the Acquiring Fund and dated as of the Closing Date,
to the effect that the representations and warranties of the Securities Trust
made in this Agreement are true and correct at and as of the Closing Date,
except as they may be affected by the transactions contemplated by this
Agreement.

8.  FURTHER CONDITIONS PRECEDENT TO OBLIGATIONS OF THE SECURITIES TRUST AND THE
    INCOME FUND

     If any of the conditions set forth below do not exist on the Closing Date
with respect to the Acquiring Fund or the Acquired Fund, either party to this
Agreement shall, at its option, not be required to consummate the transactions
contemplated by this Agreement:

     8.1.  The reorganization pursuant to the Agreement and Plan of
Reorganization between the Income Fund on behalf of the Acquiring Fund and
LAUSGSF of even date shall have been consummated.

     8.2.  This Agreement and the transactions contemplated herein shall have
been approved by the requisite vote of the holders of the outstanding shares of
the Acquired Fund in accordance with the provisions of the Securities Trust's
Declaration and Agreement of Trust and By-laws.  Notwithstanding anything herein
to the contrary, neither the Acquiring Fund nor the Acquired Fund may waive the
condi tions set forth in this paragraph 8.2.

     8.3.  On the Closing Date, no action, suit or other proceeding shall be
pending before any court or governmental agency in which it is sought to
restrain or prohibit, or obtain damages or other relief in connection with, this
Agreement or the transactions contemplated herein.

     8.4.  All consents of other parties and all other consents, orders, rulings
and permits of federal, state and local regulatory authorities (including those
of the Commission, the Internal Revenue Service and state Blue Sky and
securities

                                       14
<PAGE>
 
authorities) deemed necessary by the Acquiring Fund or the Acquired Fund to
permit consummation, in all material respects, of the transactions contemplated
hereby shall have been obtained, except where failure to obtain any such
consent, order, ruling or permit would not involve a risk of a material adverse
effect on the assets or properties of the Acquiring Fund or the Acquired Fund.

     8.5.  The N-14 Registration Statement shall have become effective under the
1933 Act and no stop orders suspending the effectiveness thereof shall have been
issued and, to the best knowledge of the parties hereto, no investigation or
proceeding for that purpose shall have been instituted or be pending, threatened
or contemplated under the 1933 Act.

     8.6.  The parties shall have received a favorable opinion of Debevoise &
Plimpton, addressed to the Income Fund and the Securities Trust and satisfactory
to the Secretary of each such party, substantially to the effect that for
federal income tax purposes:

     (a) the acquisition by the Acquiring Fund of all of the assets of the
Acquired Fund solely in exchange for the issuance of Acquiring Fund Class C
Shares to the Acquired Fund and the assumption of all of the Acquired Fund
liabilities by the Acquiring Fund, followed by the distribution by the Acquired
Fund, in complete liquidation, of the Acquiring Fund Class C Shares to the
Acquired Fund shareholders in exchange for their Acquired Fund shares, will be
treated as a "reorganization" within the meaning of Section 368(a) of the Code,
and the Acquiring Fund and the Acquired Fund will each be a "party to a
reorganization" within the meaning of Section 368(b) of the Code;

     (b)  no gain or loss will be recognized by the Acquiring Fund upon the
receipt of the assets of the Acquired Fund in exchange for the Acquiring Fund
Shares and the assumption by the Acquiring Fund of liabilities of the Acquired
Fund;

     (c)  no gain or loss will be recognized by the Acquired Fund upon the
transfer of the Acquired Fund's assets to the Acquiring Fund in exchange for the
Acquiring Fund Shares and the assumption by the Acquiring Fund of liabilities of
the Acquired Fund or upon the distribution of the Acquiring Fund Shares to the
Acquired Fund's shareholders;

     (d)  no gain or loss will be recognized by shareholders of the Acquired
Fund upon the exchange of their Acquired Fund shares for the Acquiring Fund
Shares;

                                       15
<PAGE>
 
     (e)  the aggregate tax basis for the Acquiring Fund Shares received by each
of the Acquired Fund's shareholders pursuant to the Reorganization will be the
same as the aggregate tax basis of the Acquired Fund shares held by such
shareholder immediately prior to the Reorganization, and the holding period of
the Acquiring Fund Shares to be received by each Acquired Fund shareholder will
include the period during which the Acquired Fund shares exchanged therefor were
held by such shareholder (provided that the Acquired Fund shares were held as
capital assets on the date of the Reorganization); and

     (f)  the tax basis of the Acquired Fund's assets acquired by the Acquir ing
Fund will be the same as the tax basis of such assets to the Acquired Fund
immediately prior to the Reorganization, and the holding period of the assets of
the Acquired Fund in the hands of the Acquiring Fund will include the period
during which those assets were held by the Acquired Fund.

     Notwithstanding anything herein to the contrary, neither the Acquiring Fund
nor the Securities Trust may waive the conditions set forth in this para graph
8.6.

     8.7.  The Acquiring Fund shall have duly adopted a Rule 12b-1 Plan for the
Acquiring Fund Class C Shares acceptable to the Securities Trust.

9.  BROKERAGE FEES AND EXPENSES

     9.1.  The Income Fund represents and warrants to the Acquired Fund, and the
Securities Trust represents and warrants to the Acquiring Fund, that there are
no brokers or finders entitled to receive any payments in connection with the
trans actions provided for herein.

     9.2.  Except as may be otherwise provided herein, the Acquiring Fund and
the Acquired Fund each shall pay, or provide for the payment of, the expenses
incurred by it in connection with entering into and carrying out the provisions
of this Agreement.

10.  ENTIRE AGREEMENT; SURVIVAL OF WARRANTIES

     10.1.  The parties hereto agree that no party has made any repre sentation,
warranty or covenant not set forth herein and that this Agreement con stitutes
the entire agreement between the parties.

                                       16
<PAGE>
 
     10.2.  None of the representations and warranties  included or provided for
herein shall survive the consummation of the transactions contemplated hereby.

11.  TERMINATION

     11.1.  This Agreement may be terminated at any time prior to the Closing
Date:  (1) by the mutual agreement of the Securities Trust and the Income Fund;
        -                                                                      
(2) by the Securities Trust in the event that the Income Fund shall, or by the
 -                                                                            
Income Fund in the event that the Securities Trust shall, materially breach any
representation or warranty contained herein or any agreement contained herein
and to be performed at or prior to the Closing Date; or (3) by either party if a
                                                         -                      
condition herein expressed to be precedent to the obligations of the terminating
party has not been met and it reasonably appears that it will not or cannot be
met.

     11.2.  In the event of any such termination, there shall be no liability
for damages on the part of either the Securities Trust, the Income Fund, the
Acquired Fund or the Acquiring Fund or their respective trustees, directors or
officers to the other party, but the Acquiring Fund and the Acquired Fund shall
each bear, or provide for the payment of, the expenses incurred by it incidental
to the preparation and carrying out of this Agreement as provided in paragraph
9.2.

12.  AMENDMENTS; WAIVERS

     12.1.  This Agreement may be amended, modified or supplemented in such
manner as may be mutually agreed upon in writing by the authorized officers of
the Securities Trust and the Income Fund; provided, however, that following the
approval of the Acquired Fund shareholders referred to in paragraph 8.2, no such
amendment may have the effect of changing the provisions for determining the
number of the Acquiring Fund Class C Shares to be issued to the Acquired Fund's
shareholders under this Agreement to the detriment of such shareholders without
their further approval.

     12.2.  At or at any time prior to the Closing either party hereto may by
written instrument signed by it (i) waive any inaccuracies in the
                                 -                               
representations and warranties made to it contained herein and (ii) waive
                                                                --       
compliance with any of the covenants or conditions made for its benefit
contained herein.

13.  NOTICES

     Any notice, report, statement or demand required or permitted by any
provisions of this Agreement shall be in writing and shall be given by personal

                                       17
<PAGE>
 
delivery addressed to Lord Abbett Securities Trust on behalf of its series Lord
Abbett California Tax-Free Income Trust, 767 Fifth Avenue, New York, New York,
10153, Attention: Office of the Secretary; or to Lord Abbett Tax-Free Income
Fund, Inc. on behalf of its California Series, 767 Fifth Avenue, New York, New
York, 10153, Attention: Office of the Secretary.

14.  HEADINGS; COUNTERPARTS; GOVERNING LAW; ASSIGNMENT; LIMITATION OF LIABILITY

     14.1.  The article and paragraph headings contained in this Agreement are
for reference purposes only and shall not affect in any way the meaning or
interpretation of this Agreement.

     14.2.  This Agreement may be executed in any number of counterparts, each
of which shall be deemed an original.

     14.3.  This Agreement shall be governed by and construed in accor dance
with the laws of the State of New York.

     14.4.  (a)  This Agreement shall bind and inure to the benefit of the
parties hereto and their respective successors and assigns, but no assignment or
transfer hereof or of any rights or obligations hereunder shall be made by any
party without the written consent of the other party.  Nothing herein expressed
or implied is intended or shall be construed to confer upon or give any person,
firm, corporation or other entity, other than the parties hereto and their
respective successors and assigns, any rights or remedies under or by reason of
this Agreement.

                                       18
<PAGE>
 
     (b)  The Income Fund is hereby expressly put on notice of the limi tation
of liability as set forth in Article IV of the Declaration and Agreement of
Trust of the Securities Trust and agrees that the obligations assumed by the
Securities Trust pursuant to this Agreement shall be limited in any case to the
Acquired Fund and its assets and the Income Fund shall not seek satisfaction of
any such obligation from any shareholders of the Securities Trust, the trustees,
officers, employees or agents of the Securities Trust or any of them or from any
other assets of the Securities Trust.

     IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement to
be executed by its Chairman of the Board, President or Vice President and
attested by its Secretary or Assistant Secretary.


Attest:                          LORD ABBETT SECURITIES TRUST
                                 on behalf of California Tax-Free Trust


                                 By:   
                                     _______________________________
                                      Name: 
                                      Title: 

Name:  
       _____________   
Title: Secretary       
                               


Attest:                          LORD ABBETT TAX-FREE INCOME FUND, 
                                 INC. on behalf of California Series



                                 By:   
                                     _______________________________
                                     Name: 
                                     Title: 


Name:  
       _____________    
Title: Secretary        

                                       19
<PAGE>
 
                                                                       EXHIBIT B
                                                                       ---------

                  Rule 12b-1 Distribution Plan and Agreement
 Lord Abbett Tax-Free Income Fund, Inc. -- California Series -- Class A Shares
 -----------------------------------------------------------------------------


     RULE 12b-1 DISTRIBUTION PLAN AND AGREEMENT dated as of July 12, 1996 by and
between LORD ABBETT TAX-FREE INCOME  FUND, INC., a Maryland corporation (the
"Fund"), on behalf of its CALIFORNIA SERIES (the "Series"), and LORD ABBETT
DISTRIBUTOR LLC, a New York limited liability company(the "Distributor").

     WHEREAS, the Fund is an open-end management investment company registered
under the Investment Company Act of 1940, as amended (the "Act"); and the
Distributor is the exclusive selling agent of the Fund's shares of capital
stock, including the Series' Class A shares (the "Shares") pursuant to the
Distribution Agreement between the Fund and the Distributor, dated as of the
date hereof (the "Distribution Agreement").

     WHEREAS, the Fund desires to adopt a Distribution Plan and Agreement (the
"Plan") for the Series with the Distributor, as permitted by Rule 12b-1 under
the Act, pursuant to which the Series may make certain payments to the
Distributor to be used by the Distributor or paid to institutions and persons
permitted by applicable law and/or rules to receive such payments ("Authorized
Institutions") in connection with sales of Shares and/or servicing of accounts
of shareholders holding Shares.

     WHEREAS, the Fund's Board of Directors has determined that there is a
reasonable likelihood that the Plan will benefit the Series and the holders of
the Shares.

     NOW, THEREFORE, in consideration of the mutual covenants and of other good
and valuable consideration, receipt of which is hereby acknowledged, it is
agreed as follows.

     1.  The Fund hereby authorizes the Distributor to enter into agreements
with Authorized Institutions (the "Agreements") which may provide for the
payment to such Authorized Institutions of distribution and service fees which
the Distributor receives from the Series in order to provide additional
incentives to such Authorized Institutions (i) to sell Shares and (ii) to
                                            -                      --    
provide continuing information and investment services to their accounts holding
Shares and otherwise to encourage their accounts to remain invested in the
Shares.

     2.  The Fund also hereby authorizes the Distributor to use payments
received hereunder from the Series in order to (a) finance any activity which is
                                                -                               
primarily intended to result in the sale of Shares and (b) provide continuing
                                                        -                    
information and investment services to shareholder accounts not serviced by
Authorized Institutions receiving a service fee from the Distributor hereunder
and otherwise to 
<PAGE>
 
encourage such accounts to remain invested in the Shares; provided that (i) any
                                                          --------       -
payments referred to in the foregoing clause (a) shall not exceed the
distribution fee permitted to be paid at the time under paragraph 3 of this Plan
and shall be authorized by the Board of Directors of the Fund by a vote of the
kind referred to in paragraph 10 of this Plan and (ii) any payments referred to
                                                   --
in clause (b) shall not exceed the service fee permitted to be paid at the time
under paragraph 3 of this Plan.

     3. The Series is authorized to pay the Distributor hereunder for remittance
to Authorized Institutions and/or use by the Distributor pursuant to this Plan
(a) service fees and (b) distribution fees, each at an annual rate not to exceed
- --                    -                                                         
 .25 of 1% of the average annual net asset value of Shares outstanding.  The
Board of Directors of the Fund shall from time to time determine the amounts,
within the foregoing maximum amounts, that the Series may pay the Distributor
hereunder.  Any such fees (which may be waived by the Authorized Institutions in
whole or in part) may be calculated and paid quarterly or more frequently if
approved by the Board of Directors of the Fund.  Such determinations and
approvals by the Board of Directors shall be made and given by votes of the kind
referred to in paragraph 10 of this Plan.  Payments by holders of Shares to the
Series of contingent deferred reimbursement charges relating to distribution
fees paid by the Series hereunder shall reduce the amount of distribution fees
for purposes of the annual 0.25% distribution fee limit.  The Distributor will
monitor the payments hereunder and shall reduce such payments or take such other
steps as may be necessary to assure that (i) the payments pursuant to this Plan
                                          -                                    
shall be consistent with Article III, Section 26, subparagraphs (d)(2) and (5)
of the Rules of Fair Practice of the National Association of Securities Dealers,
Inc. with respect to investment companies with asset-based sales charges and
service fees, as the same may be in effect from time to time and (ii) the Series
                                                                  --            
shall not pay with respect to any Authorized Institution service fees equal to
more than .25 of 1% of the average annual net asset value of Shares sold by (or
attributable to Shares or shares sold by) such Authorized Institution and held
in an account covered by an Agreement.

     4.  The net asset value of the Shares shall be determined as provided in
the Articles of Incorporation of the Fund.  If the Distributor waives all or a
portion of the fees which are to be paid by the Series hereunder, the
Distributor shall not be deemed to have waived its rights under this Agreement
to have the Series pay such fees in the future.

     5.  The Secretary of the Fund, or in his absence the Chief Financial
Officer, is hereby authorized to direct the disposition of monies paid or
payable by the Series hereunder and shall provide to the Fund's Board of
Directors, and the Directors shall review at least quarterly, a written report
of the amounts so expended pursuant to this Plan and the purposes for which such
expenditures were made.

                                       2
<PAGE>
 
     6.  Neither this Plan nor any other transaction between the parties hereto
pursuant to this Plan shall be invalidated or in any way affected by the fact
that any or all of the directors, officers, shareholders, or other
representatives of the Fund are or may be "interested persons" of the
Distributor, or any successor or assignee thereof, or that any or all of the
directors, officers, partners, or other representatives of the Distributor are
or may be "interested persons" of the Fund, except as may otherwise be provided
in the Act.

     7.  The Distributor shall give the Fund the benefit of the Distributor's
best judgment and good faith efforts in rendering services under this Plan.
Other than to abide by the provisions hereof and render the services called for
hereunder in good faith, the Distributor assumes no responsibility under this
Plan and, having so acted, the Distributor shall not be held liable or held
accountable for any mistake of law or fact, or for any loss or damage arising or
resulting therefrom suffered by the Fund, the Series or any of the shareholders,
creditors, directors, or officers of the Fund; provided however, that nothing
herein shall be deemed to protect the Distributor against any liability to the
Fund or the Series' shareholders by reason of willful misfeasance, bad faith or
gross negligence in the performance of its duties hereunder, or by reason of the
reckless disregard of its obligations and duties hereunder.

     8.  This Plan shall become effective upon the date hereof, and shall
continue in effect for a period of more than one year from that date only so
long as such continuance is specifically approved at least annually by a vote of
the Board of Directors of the Fund, including the vote of a majority of the
directors who are not "interested persons" of the Fund and who have no direct or
indirect financial interest in the operation of this Plan or in any agreement
related to this Plan, cast in person at a meeting called for the purpose of
voting on such renewal.

     9.  This Plan may not be amended to increase materially the amount to be
spent by the Series hereunder above the maximum amounts referred to in paragraph
3 of this Plan without a shareholder vote in compliance with Rule 12b-1 and Rule
18f-3 under the Act as in effect at such time, and each material amendment must
be approved by a vote of the Board of Directors of the Fund, including the vote
of a majority of the directors who are not "interested persons" of the Fund and
who have no direct or indirect financial interest in the operation of this Plan
or in any agreement related to this Plan, cast in person at a meeting called for
the purpose of voting on such amendment.  Amendments to this Plan which do not
increase materially the amount to be spent by the Series hereunder above the
maximum amounts referred to in paragraph 3 of this Plan may be made pursuant to
paragraph 10 of this Plan.

     10.  Amendments to this Plan other than material amendments of the kind
referred to in the forgoing paragraph 9 may be adopted by a vote of the Board of
Directors of the Fund, including the vote of a majority of the directors who are
not 

                                       3
<PAGE>
 
"interested persons" of the Fund and who have no direct or indirect financial
interest in the operation of this Plan or in any agreement related to this Plan.
The Board of Directors of the Fund may, by such a vote, interpret this Plan and
make all determinations necessary or advisable for its administration.

     11.  This Plan may be terminated at any time without the payment of any
penalty (a) by the vote of a majority of the directors of the Fund who are not
         -                                                                    
"interested persons" of the Fund and have no direct or indirect financial
interest in the operation of this Plan or in any agreement related to the Plan,
or (b) by a shareholder vote in compliance with Rule 12b-1 and Rule 18f-3 under
    -                                                                          
the Act as in effect at such time.  This Plan shall automatically terminate in
the event of its assignment.

     12.  So long as this Plan shall remain in effect, the selection and
nomination of those directors of the Fund who are not "interested persons" of
the Fund are committed to the discretion of such disinterested directors.  The
terms "interested persons," "assignment" and "vote of a majority of the
outstanding voting securities" shall have the same meanings as those terms are
defined in the Act.

     IN WITNESS WHEREOF, each of the parties has caused this instrument to be
executed in its name and on its behalf by its duly authorized representative as
of the date first above written.

                         LORD ABBETT TAX-FREE INCOME FUND, INC.
                       
                         By:_____________________________
                            President

ATTEST:

________________________
Assistant Secretary


                         LORD ABBETT DISTRIBUTOR LLC
                         
                         
                         By:_____________________________

                                       4
<PAGE>
 
                                                                      
                                                                   EXHIBIT C
                                                                   ---------    


    
           COMPARISON OF CERTAIN INVESTMENT POLICIES AND RESTRICTIONS

        Comparison of the fundamental and certain non-fundamental investment
policies and restrictions of Lord Abbett California Tax-Free Income Fund, Inc.
(the "Reorganized Fund"), California Tax-Free Income Trust (the "Acquired
Trust"), a series of  Lord Abbett Securities Trust, and the California Series
(the "Acquiring Fund"), a series of Lord Abbett Tax-Free Income Fund, Inc.      

<TABLE>
<CAPTION> 
                                                                                           
 POLICY/RESTRICTION OF THE       POLICY/RESTRICTION OF THE                       POLICY/RESTRICTION OF
     REORGANIZED FUND                 ACQUIRED TRUST                               THE ACQUIRING FUND
     ----------------                 --------------                               ------------------
<S>                          <C>                                       <C>                            
SHORT SALES/MARGIN.                                                    
FUNDAMENTAL                  FUNDAMENTAL                               NON-FUNDAMENTAL
The Fund may not sell        The Fund may not sell short or buy on     The Fund may not make short sales of securities or maintain a
short or buy on margin,      margin.                                   short position except to the extent permitted by applic able
although it may obtain                                                 law.
short-term credit to                                                   
clear securities                                                       FUNDAMENTAL
purchases.                                                             The Fund may purchase securities on margin to the extent
                                                                       permitted by applic able law.
 
BORROWING.
FUNDAMENTAL                  FUNDAMENTAL                               FUNDAMENTAL
Subject to certain           The Fund may not borrow money, unless     The Fund may not borrow money, except that (i) the Fund may
exceptions, the Fund may     such borrowing does not exceed the        borrow from banks (as defined in the 1940 Act) in amounts up
not borrow money.            asset coverage requirements of Section    to 33 1/3% of its total assets (including the amount
                             18(f) of the Act and unless such          borrowed), (ii) the Fund may borrow up to an additional 5% of
                             borrowing on behalf of the Fund shall     its total assets for tem porary purposes, and (iii) the Fund
                             be a liability of the Fund, as the        may obtain such short-term credit as may be necessary for the
                             case may be.                              clearance of purchases and sales of portfolio securities.
                                                                     
                                                                       NON-FUNDAMENTAL
                                                                       The Fund may not borrow in excess of 5% of its gross assets
                                                                       taken at cost or market value, whichever is lower at the time

                                                                       of borrowing, and then only as a temporary measure for
                                                                       extraordinary or emergency purposes.
</TABLE> 
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                     
 POLICY/RESTRICTION OF THE       POLICY/RESTRICTION OF THE                       POLICY/RESTRICTION OF
     REORGANIZED FUND                 ACQUIRED TRUST                               THE ACQUIRING FUND
     ----------------                 --------------                               ------------------
<S>                          <C>                                       <C>                            
UNDERWRITING.                                                        
FUNDAMENTAL                  FUNDAMENTAL                               FUNDAMENTAL
The Fund may not engage in   The Fund may not engage in the            The Fund may not engage in the underwriting of securities,
the underwriting of          underwriting of securities, except,       except,  pursuant to a merger or acquisition or to the extent
securities, except to the    pursuant to a merger or acquisition or    that, in connection with the disposition of its portfolio
extent that, in              to the extent that, in connection with    securities, it may be deemed to be an underwriter under
connection with the          the disposition of its portfolio          federal securities laws.
disposition of its           securities, it may be deemed to be an   
portfolio securities, it     underwriter under federal securities    
may be deemed to be an       laws..
underwriter under federal                                            
securities laws.                                                     
                                                                     
LENDING.                                                             
FUNDAMENTAL                  FUNDAMENTAL                               NONFUNDAMENTAL
The Fund may not lend        The Fund may not lend money or            The Fund may not make loans to other persons, except that the
money or securities,         securities, except for the purchase of    acquisition of bonds, debentures or other corporate debt
except for the purchase      certain debt securities.                  securities and investment in government obligations,
of certain debt                                                        commercial paper, pass-through instruments, certificates of
securities.                                                            deposit, bankers acceptances, repurchase agreements or any
                                                                       similar instruments shall not be subject to this limitation,
                                                                       and except further that the Fund may lend its portfolio
                                                                       securities, provided that the lending of portfolio securities
                                                                       may be made only in accordance with applicable law.
</TABLE> 

                                       2
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                      
 POLICY/RESTRICTION OF THE       POLICY/RESTRICTION OF THE                       POLICY/RESTRICTION OF
     REORGANIZED FUND                 ACQUIRED TRUST                               THE ACQUIRING FUND 
     ----------------                 --------------                               ------------------ 
<S>                          <C>                                       <C>                             
REAL ESTATE/ COMMODITIES.                                           
FUNDAMENTAL                  FUNDAMENTAL                               FUNDAMENTAL
The Fund may not deal in     The Fund may not deal in real estate,     The Fund may not buy or sell real estate (except that the
real estate, commodities     commodities or commodity contracts,       Fund may invest in securities directly or indirectly secured
or commodity contracts.      excluding the securities of companies     by real estate or interests therein or issued by companies
                             which deal in or hold real estate or      which invest in real estate or interests therein) or
                             commodities.                              commodities or commodity contracts (except to the extent the
                                                                       Fund may do so in accordance with applicable law and without
                                                                       registering as a commodity pool operator under the Commodity
                                                                       Exchange Act as, for example, with futures contracts).
                                                                     
                                                                       NON-FUNDAMENTAL
                                                                       The Fund may not invest in real estate limited partnership
                                                                       interests or interests in oil, gas or other mineral leases,
                                                                       or exploration or other development programs, except that the

                                                                       Fund may invest in securities issued by companies that engage
                                                                       in oil, gas or other mineral exploration or development
                                                                       activities.
                                                                     
DIVERSIFICATION.                                                     
FUNDAMENTAL                  None stated.                              NON-FUNDAMENTAL
With respect to 75% of its                                             None stated (but the Fund will be required to meet the
gross assets, the Fund                                                 diversification rules under Subchapter M of the Internal
may not buy secu rities                                                Revenue Code).
if the purchase would                                                 
then cause it to have                                                 
more than 5% of its gross                                             
assets, at market value                                               
at the time of                                                        
investment, invested in                                               
the securities of any one                                             
issuer, except securities                                             
issued or guaranteed by                                               
the U.S. Government, its                                              
agencies or                                                           
instrumentalities.                                                    
</TABLE> 

                                       3
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                      
 POLICY/RESTRICTION OF THE       POLICY/RESTRICTION OF THE                       POLICY/RESTRICTION OF
     REORGANIZED FUND                 ACQUIRED TRUST                               THE ACQUIRING FUND 
     ----------------                 --------------                               ------------------ 
<S>                          <C>                                       <C>                             
INVESTMENT IN A SINGLE                                               
INDUSTRY.                                                           
FUNDAMENTAL                  FUNDAMENTAL                               FUNDAMENTAL
The Fund may not invest      The Fund may not concentrate              The Fund may not invest more than 25% of its assets, taken at
more than 25% of its         investments in any one industry,          market value, in the securities of issuers in any particular
gross assets in any one      except that it may invest more than       industry (excluding (i) tax-exempt securities, such as those
industry.                    25% of gross assets in tax-exempt         financing facilities in the same industry or issued by
                             securities.                               non-governmental users and (ii) the securities of the U.S.
                                                                       Government, its agencies or instrumentalities).
                                                                     
RESTRICTED/ILLIQUID                                                  
SECURITIES.                                                         
FUNDAMENTAL                  NON-FUNDAMENTAL                           NON-FUNDAMENTAL
The Fund may not invest      The Fund may not invest, knowingly,       The Fund may not invest, knowingly, more than 15% of its net
 more than 10% of gross      more than 15% of its net assets (at       assets (at the time of investment) in illiquid securities,
 assets in restricted        the time of investment) in illiquid       except for securities qualifying for resale under Rule 144A
 securities.                 securities, except for securities         of the Securities Act of 1933, deemed to be liquid by the
                             qualifying for resale under Rule 144A     Board of Trustees.
                             of the Securities Act of 1933, deemed   
                             to be liquid by the Board of Trustees.  
                                                                     
MORTGAGING AND PLEDGING OF                                           
ASSETS.                                                             
None stated.                 FUNDAMENTAL                               FUNDAMENTAL
                             The Fund may not pledge, mortgage or      The Fund may not pledge its assets (other than to secure
                             hypothecate its assets.                   borrowings, or to the extent permitted by the Fund's
                                                                       investment policies as permitted by applicable law).
                                                                     
INVESTMENTS IN SECURITIES                                            
OF OTHER INVESTMENT                                                 
COMPANIES.                                                          
FUNDAMENTAL                  FUNDAMENTAL                               NON-FUNDAMENTAL
The Fund may not invest in   The Fund may not invest in the            The Fund may not invest in the securities of other investment
the securities of other      securities of other investment            companies, except as permitted by applicable law.
investment companies,        companies, excluding U.S. Government    
except pursuant to a         securities.                             
merger, acquisition or                                               
other con solidation.       
</TABLE> 

                                       4
<PAGE>
 
<TABLE>
<CAPTION>         
 POLICY/RESTRICTION OF THE       POLICY/RESTRICTION OF THE                       POLICY/RESTRICTION OF
     REORGANIZED FUND                 ACQUIRED TRUST                               THE ACQUIRING FUND 
     ----------------                 --------------                               ------------------ 
<S>                          <C>                                       <C>                            
OPTIONS.                                                             
FUNDAMENTAL                  FUNDAMENTAL                               NON-FUNDAMENTAL
The Fund may not buy or      The Fund may not buy or sell put,         The Fund may not write, purchase or sell puts, calls,
sell put, call, straddle     call, straddle or spread options,         straddles, spreads or combinations thereof, except to the
or spread options.           except that the Fund may buy, hold or     extent permitted in the Fund's prospectus and statement of
                             sell options and financial futures.       additional information, as they may be amended from time to
                                                                       time.
                                                                     
INVESTMENTS IN SECURITIES                                            
OF ISSUERS IN OPERATION                                             
FOR LESS THAN THREE YEARS.                                          
None stated.                                                         
                             None stated.                              NON-FUNDAMENTAL
                                                                       The Fund may not invest in securities of issuers which, with
                                                                       their predecessors, have a record of less than three years
                                                                       continuous operations, except if more than 5% of the Fund's
                                                                       total assets would be invested in such securities (this
                                                                       restriction shall not apply to mortgage-backed securities,
                                                                       asset-backed securities or obligations issued or guaranteed
                                                                       by the U.S. Government, its agencies or instrumentalities).
                                                                     
OWNERSHIP OF PORTFOLIO                                               
SECURITIES BY OFFICERS                                              
AND DIRECTORS.                                                      
None stated.                 FUNDAMENTAL                               NON-FUNDAMENTAL
                             The Fund may not hold securities of       The Fund may not hold securities of any issuer if more than
                             any issuer if more than  1/2 of 1% of     1/2 of 1% of the securities of such issuer are owned
                             the securities of such issuer are         beneficially by one or more officers or Directors or by one
                             owned beneficially by one or more         or more members or partners of the underwriter or investment
                             officers or Trustees or by one or more    advisor if together they own more than 5% of the securities
                             partners of the underwriter of            of such issuer.
                             investment advisor if together they     
                             own more than 5% of the securities of   
                             such issuer. 
</TABLE> 

                                       5
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                      
 POLICY/RESTRICTION OF THE       POLICY/RESTRICTION OF THE                       POLICY/RESTRICTION OF
     REORGANIZED FUND                 ACQUIRED TRUST                               THE ACQUIRING FUND 
     ----------------                 --------------                               ------------------ 
<S>                          <C>                                       <C>                            
TRANSACTIONS WITH CERTAIN                                            
PERSONS.                                                            
None stated.                 FUNDAMENTAL                               NON-FUNDAMENTAL
                             The Fund, subject to certain              The Fund may not buy from or sell to any of its officers,
                             exceptions, may not engage in             directors, employees or its investment adviser or any of its
                             securities transactions with its          officers, directors, partners or employees, any securities
                             underwriter or investment manager or      other than shares of the Fund's common stock.
                             with officers, trustees or firms        
                             (acting as principals) with which any   
                             of the foregoing are associated.        
                                                                     
SENIOR SECURITIES.                                                   
                             FUNDAMENTAL                               FUNDAMENTAL
None stated.                 The Fund may not issue senior             The Fund may not issue senior securities to the extent such
                             securities.                               issuance would violate applicable law.
PURCHASE OF WARRANTS.                                                
None stated.                                                           NON-FUNDAMENTAL
                             None stated.                              The Fund may not invest in warrants if, at the time of the
                                                                       acquisition, its investment in warrants, valued at the lower
                                                                       of cost or market, would exceed 5% of the Fund's total assets
                                                                       (included within such limitation, but not to exceed 2% of the
                                                                       Fund's total assets, are warrants which are not listed on the
                                                                       New York or American Stock Exchange or a major foreign
                                                                       exchange).
</TABLE>

                                       6
<PAGE>
 
             
            STATEMENT OF ADDITIONAL INFORMATION DATED APRIL 24, 1996      

                          ACQUISITION OF THE ASSETS OF
             Lord Abbett California Tax-Free Income Fund, Inc. and
           Lord Abbett California Tax-Free Income Trust, a series of
                          Lord Abbett Securities Trust
                 The General Motors Building, 767 Fifth Avenue
                               New York, NY 10153
         
   BY AND IN EXCHANGE FOR CLASS A SHARES AND CLASS C SHARES, RESPECTIVELY, OF
                         California Series, a series of
                     Lord Abbett Tax-Free Income Fund, Inc.
                 The General Motors Building, 767 Fifth Avenue
                               New York, NY 10153
             
        This Statement of Additional Information, relating specifically to the
proposed transfer of the assets of Lord Abbett California Tax-Free Income Fund,
Inc. (the "Reorganized Fund") and California Tax-Free Income Trust  (the
"Acquired Trust"), a series of Lord Abbett Securities Trust, to the California
Series  (the "Acquiring Fund"), a series of Lord Abbett Tax-Free Income Fund,
Inc., in exchange for Class A shares and Class C shares, respectively, of the
Acquiring Fund and the assumption by the Acquiring Fund of the liabilities of
the Reorganized Fund and the Acquired Trust, consists of this and the following
page and the following described documents, each of which accompanies this
Statement of Additional Information and is incorporated herein by reference: 
     

        1. Statement of Additional Information of the Reorganized Fund dated
January 1, 1996.

        2. Statement of Additional Information of Lord Abbett Securities Trust
dated March 1, 1996, insofar as it relates to the Acquired Trust.
    
        3. Statement of Additional Information of Lord Abbett Tax-Free Income
Fund, Inc. dated March 20, 1996.      

        4. The financial statements of Lord Abbett Tax-Free Income Fund, Inc.
for the fiscal year ended September 30, 1995, and the report thereon of Deloitte
& Touche LLP, independent public accountants, contained in the 1995 Annual
Report of the Acquiring Fund.

        5.  The financial statements of the Reorganized Fund for the fiscal year
ended August 31, 1995, and the report thereon of Deloitte & Touche LLP,
independent public accountants, contained in the 1995 Annual Report of the
Reorganized Fund.

                                      B-1
<PAGE>
 
        6.  The financial statements of the Acquired Trust for the fiscal year
ended October 31, 1995, and the report thereon of Deloitte & Touche LLP,
independent public accountants, contained in the 1995 Annual Report of Lord
Abbett Securities Trust.
    
        The financial statements referred to above are incorporated herein in
reliance upon the authority of Deloitte & Touche LLP as experts in auditing and
accounting.  This Statement of Additional Information is not a prospectus.  A
Proxy Statement and Prospectus dated the date hereof relating to the above-
referenced matter may be obtained without charge by writing the Acquiring Fund
at the address set forth above or by calling 1-800-874-3733.  This Statement of
Additional Information should be read in conjunction with such Proxy Statement
and Prospectus.      

                                      B-2
<PAGE>
 
         
ITEM 16.  EXHIBITS
    
  11.        Opinion of Debevoise & Plimpton as to the legality of securities
             being issued and Consent; filed herewith.

  17(a)      Prospectus and Statement of Additional Information of Lord Abbett
             Securities Trust, incorporated herein by reference to Post-
             Effective Amendment No. 10 to Registration Statement on Form N-1A
             of Lord Abbett Securities Trust (File Nos. 33-58846 and 811-7538)
             filed on or about February 29, 1996.

  17(b)      Prospectus and Statement of Additional Information of Lord Abbett
             Tax-Free Income Fund, incorporated herein by reference to
             Prospectus of Lord Abbett Tax-Free Income Fund filed under Rule 497
             (File Nos. 2-88912 and 811-3942) on or about March 28, 1996.      

                                      C-1
<PAGE>
 
                                   SIGNATURES

  *Post-effective  amendment  No. 1 to this  Registration  Statement has been
signed on behalf of the Registrant in the City of New York and State of New York
on the 24 day of April 1996,  who certifies that this  Post-Effective  Amendment
No. 1 meets all the requirements for  effectiveness  under paragraph (b) of Rule
485 under the Securities Act of 1933, as amended.

              
                     LORD ABBETT TAX-FREE INCOME FUND, INC.



                             By:/s/ Ronald P. Lynch
                                    ---------------
                                    Ronald P. Lynch
                                    Chairman of the Board

            *Post-Effective Amendment No. 1 to this Registration Statement has
been signed by the following persons in the capacities indicated and on the
dates indicated.


   
         SIGNATURE                           TITLE                       DATE
         ---------                           -----                       ----

/s/ Ronald P. Lynch                Chairman of the Board
- -------------------------------    and Director                       4/24/96
    Ronald P. Lynch                

/s/ Robert S. Dow                  President and Director
- -------------------------------                                       4/24/96
    Robert S. Dow

/s/ John J. Gargana, Jr.           Vice President and
- -------------------------------    Chief Financial Officer            4/24/96
    John J. Gargana, Jr.           

/s/ E. Thayer Bigelow              Director
- -------------------------------                                       4/24/96
    E. Thayer Bigelow

/s/                                Director
- -------------------------------                                       ----------
    Stewart S. Dixon

/s/                                Director
- -------------------------------                                       ----------
    John C. Jansing

/s/ C. Alan MacDonald              Director
- -------------------------------                                       4/24/96
    C. Alan MacDonald

/s/                                Director
- -------------------------------                                       ----------
    Hansel B. Millican, Jr.

/s/ Thomas J. Neff                 Director
- -------------------------------                                       4/24/96
    Thomas J. Neff

/s/ E. Wayne Nordberg              Director
- -------------------------------                                       4/24/96
    E. Wayne Nordberg

                                      C-2
<PAGE>
 
                                  EXHIBIT INDEX

      The following exhibits are filed as a part of this Registration Statement
pursuant to General Instruction G of Form N-14.

<TABLE> 
<CAPTION> 

   EXHIBIT                                                                                PAGE
   NUMBER                                    DESCRIPTION                                 NUMBER
   -------                                   -----------                                 ------
<S>           <C>                                                                        <C>
11            Opinion of Debevoise & Plimpton as to legality of securities being
              issued and Consent
</TABLE>

                                      C-3


    


                                                                      Exhibit 11


                       [Debevoise & Plimpton Letterhead]


                                                                  April 24, 1996



Lord Abbett Tax-Free Income Fund, Inc.
The General Motors Building
767 Fifth Avenue
New York, New York  10153


                     Lord Abbett Tax-Free Income Fund, Inc.
                      Registration Statement on Form N-14
                      -------------------------------------

Ladies and Gentlemen:

     We have acted as counsel to Lord Abbett Tax-Free Income Fund, Inc. (the
"Registrant"), a Maryland corporation, in connection with the preparation and
filing with the Securities and Exchange Commission under the Securities Act of
1933, as amended, of a Registration Statement on Form N-14 (File No. 811-3942)
and Post-Effective Amendment No. 1 thereto (as so amended, the "Registration
Statement"), relating to the issuance of shares of the capital stock of the
California Series (the "Acquiring Fund"), a series of the Registrant.

     Such shares are to be established and designated as the Class A shares and
the Class C shares (the "Class A shares" and the "Class C shares").  The Class A
shares are to be issued to Lord Abbett California Tax-Free Income Fund, Inc., a
Maryland corporation (the "Reorganized Fund"),
<PAGE>
 
Lord Abbett Tax-Free Income Fund, Inc.
Page 2


pursuant to an Agreement and Plan of Reorganization (the "Reorganized Fund
Plan") between the Registrant, on behalf of the Acquiring Fund, and the
Reorganized Fund substantially in the form of Exhibit A-1 included in Part A of
the Registration Statement.  The Class C shares are to be issued to Lord Abbett
California Tax-Free Income Trust (the "Acquired Trust"), a series of Lord Abbett
Securities Trust (the "Securities Trust"), a Delaware business trust, pursuant
to an Agreement and Plan of Reorganization (the "Acquired Trust Plan") between
the Registrant, on behalf of the Acquiring Fund, and the Securities Trust, on
behalf of the Acquired Trust, substantially in the form of Exhibit A-2 included
in Part A of the Registration Statement.  Such issuances of the Class A and the
Class C shares are to be made in connection with the acquisitions by the
Acquiring Fund of the assets of, and the assumptions by the Acquiring Fund of
the liabilities of, the Reorganized Fund and the Acquired Trust, respectively.

     In so acting, we have examined and relied upon the originals, or copies
certified or otherwise identified to our satisfaction, of such documents,
records, certificates and other instruments and have made such other
investigations as in our judgment are necessary or appropriate to enable us to
render the opinion expressed below.  We have not, however, undertaken any
independent investigation of any factual matter set forth in any of the
foregoing.

     Based on the foregoing, we are of the following opinion:

     (a)  Class A shares.  Assuming that the Reorganized Fund and the Acquiring
          --------------                                                       
Fund duly execute and deliver the Reorganized Fund Plan, that the Reorganized
Fund Plan and the reorganization provided for thereby are duly approved by the
shareholders of the Reorganized Fund, that the transactions contemplated by the
Reorganized Fund Plan are duly consummated and that the charter documents
substantially in the forms of Exhibits 1(f), 1(g) and 1(h) to the Registration
Statement are duly approved and filed with the State Department of Assessments
and Taxation of Maryland, the Class A shares issued pursuant to the Reorganized
Fund Plan will be legally issued, fully paid and non-assessable.

     (b)  Class C shares.  Assuming that the Acquired Trust and the Acquiring
          --------------                                                     
Fund duly execute and deliver
<PAGE>
 
Lord Abbett Tax-Free Income Fund, Inc. 
Page 3


the Acquired Trust Plan, that the Acquired Trust Plan and the reorganization
provided for thereby are duly approved by the shareholders of the Acquired
Trust, that the transactions contemplated by the Acquired Trust Plan are duly
consummated and that the charter documents substantially in the forms of
Exhibits 1(f), 1(g) and 1(h) to the Registration Statement are duly approved and
filed with the State Department of Assessments and Taxation of Maryland, the
Class C shares issued pursuant to the Acquired Trust Plan will be legally
issued, fully paid and non-assessable.

     We understand that the authorized shares of capital stock of each series
and of each class of each series of the Registrant are sufficient for the
issuance of the Class A shares that would be issued pursuant to the Reorganized
Fund Plan and the Class C shares that would be issued pursuant to the Acquired
Trust Plan if the closings under such Plans took place today.  The foregoing
opinion assumes that if, pending such closings, additional authorized shares are
required, the Registrant will amend its Articles of Incorporation to provide for
such authorized shares.

     This opinion is limited solely to the federal law of the United States and
the Maryland General Corporation Law as in effect on the date hereof and the
relevant facts that exist as of the date hereof.  Without limiting the
generality of the foregoing, we express no opinion concerning other laws of the
State of Maryland, including the securities laws of such state, or the laws of
any other jurisdiction other than the United States.  No assurance can be given
that the law or facts will not change, and we have not undertaken to advise you
or any other person with respect to any event subsequent to the date hereof.

     We are delivering this opinion to you and, without our prior written
consent, no other persons are entitled to rely on this opinion.  We consent to
the filing of this opinion as an Exhibit to the Registration Statement.  In
giving such consent, we do not thereby concede that we are within the category
of persons whose consent is required under Section 7 of the Securities Act of
1933 or the Rules and Regulations of the Securities and Exchange Commission
thereunder.


                                             Very truly yours,

                                             /s/ Debevoise & Plimpton


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