Entered from booking ledger and New York Times concert listing and review. According to the review, the program also included a "group of light American items".
“Arts and Leisure Guide.” New York Times [New York, N.Y., United States], 23 Mar. 1975, p. 111. Arts & Leisure.
Hughes, Allen. “Song Program Given by Gerald Hamilton.” New York Times [New York, N.Y., United States], 30 Mar. 1975, p. 34.