NUVEEN TAX EXEMPT UNIT TRUST SERIES 681


333 W WACKER DRIVE, CHICAGO IL 60606


1999 SEC Filings

NUVEEN TAX EXEMPT UNIT TRUST SERIES 681, 24F-2NT, 1999-11-15
NUVEEN TAX EXEMPT UNIT TRUST SERIES 681, 497J, 1999-07-28
NUVEEN TAX EXEMPT UNIT TRUST SERIES 681, 485BPOS, 1999-07-26


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