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<PAGE>
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<PAGE>
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<PAGE>
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SIGNATURE JOSEPH VAN DYKE
TITLE ASSISTANT TREASURER
<PAGE>
Board of Trustees
Lord Abbett Securities Trust:
In planning and performing our audit of the financial statements of Lord Abbett
Securities Trust - Growth & Income Securities Series ("Fund") for the year ended
October 31, 1996, we considered its internal control structure, including
procedures for safeguarding securities, in order to determine our auditing
procedures for the purpose of expressing our opinion on the financial statements
and to comply with the requirements of Form N-SAR, not to provide assurance on
the internal control structure.
The management of the Fund is responsible for establishing and maintaining an
internal control structure. In fulfilling this responsibility, estimates and
judgments by management are required to assess the expected benefits and related
costs of internal control structure policies an procedures. Two of the
objectives of an internal control structure are to provide management with
reasonable, but not absolute, assurance that assets are safeguarded against loss
from unauthorized use or disposition and that transactions are executed in
accordance with management's authorization and recorded properly to permit
preparation of financial statements in conformity with generally accepted
accounting principles.
Because of inherent limitations in any internal control structure, errors or
irregularities may occur and not be detected. Also, projection of any evaluation
of the structure to future periods is subject to the risk that it may become
inadequate because of changes in conditions or that the effectiveness of the
design and operation may deteriorate.
Our consideration of the internal control structure would not necessarily
disclose all matters in the internal control structure that might be material
weaknesses under standards established by the American Institute of Certified
Public Accountants. A material weakness is a condition in which the design or
operation of the specific internal control structure elements does not reduce to
a relatively low level the risk that errors or irregularities in amounts that
would be material in relation to the financial statements being audited may
occur and not be detected within a timely period by employees in the normal
course of performing their assigned functions. However, we noted no matters
involving the internal control structure, including procedures for safeguarding
securities, that we consider to be material weaknesses as defined above as of
October 31, 1996.
This report is intended solely for the information and use of management and the
Securities and Exchange Commission.
December 6, 1996
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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