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EXHIBIT 4.2
(ON CARTER LEDYARD & MILBURN LETTERHEAD)
June 16, 2000
Nuveen Tax-Free Unit Trust, Series 1173
c/o John Nuveen & Co. Incorporated,
as Depositor of
Nuveen Tax-Free Unit Trust, Series 1173
333 W. Wacker Drive
Chicago, Illinois 60606
RE: Nuveen Tax-Free Unit Trust, Series 1173
Dear Sirs:
We hereby consent to the reference to our firm under the caption "What is
the Tax Status of Unitholders?" in the Registration Statement and related
Prospectus of Nuveen Tax-Free Unit Trust, Series 1173 for the registration of
units of fractional undivided interest in the Fund in the aggregate principal
amount as set forth in the Closing Memorandum dated today's date.
Very truly yours,
CARTER, LEDYARD & MILBURN
