The 25th Annual Tony Awards ceremony was held on March 28, 1971, at the Palace Theatre in New York City.
[1] The theme was to show highlights from 25 years of musicals that had won Tonys, and the stars who introduced them.
The presenters were Dick Cavett, Carol Channing and Ruby Keeler.
[1][2] Saluting 25 Years of Tony Award-Winning Musicals:
The performers: Edie Adams, Lauren Bacall, Vivian Blaine, Tom Bosley, Yul Brynner, Carol Channing, William Daniels, Alfred Drake, Nanette Fabray, Jill Haworth, Florence Henderson, Stanley Holloway, Richard Kiley, Angela Lansbury, Paul Lynde, Patricia Morison, Robert Morse, Zero Mostel, Robert Preston, John Raitt, Leslie Uggams, Gwen Verdon, Virginia Vestoff, Ray Walston, David Wayne.