EXHIBIT 4.1
INTERACTIVE DATA
FINANCIAL TIMES INFORMATION
100 WILLIAM STREET, 15th FLOOR
NEW YORK, NEW YORK 10038
(212) 269-6300
FAX 212-771-6545
December 6, 2000
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Merrill Lynch, Pierce, Fenner & Smith
Incorporated
Defined Asset Funds
P.O. Box 9051
Princeton, New Jersey 08543-9051
The Bank of New York
101 Barclay Street
New York, New York 10286
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Re: Corporate Income Fund
Monthly Payment Series--323, Defined Asset Funds
(A Unit Investment Trust) Units of Fractional Undivided Interest-Registered
Under the Securities Act of 1933, File No. 333-02039)
Gentlemen:
We have examined the Registration Statement for the above captioned Fund.
We hereby consent to the reference to Interactive Data Services, Inc. in the
Prospectus contained in the Post-Effective Amendment No. 5 to the Registration
Statement for the above captioned Fund and to the use of the evaluations of the
Obligations prepared by us which are referred to in such Prospectus and
Registration Statement.
You are authorized to file copies of this letter with the Securities and
Exchange Commission.
Very truly yours,
STEVEN MIANO
Director Fixed Income
Data Operations
