Isidore Cohen, Violin, and Robert Helps, Piano Entered from booking ledger and New York Times concert listing and review. WORLD PREMIERE of Robert Helps' FANTASY FOR VIOLIN AND PIANO NEW YORK PREMIERE of Easley Blackwood's SONATA NO. 1 FOR VIOLIN AND PIANO, OP. 7 "OPERA AND CONCERT PROGRAMS." New York Times (1923-), May 03 1964, p. 1. ProQuest. Web. 20 Nov. 2023. Klein, Howard. "COHEN AND HELPS PRESENT RECITAL: 2 FIRST PERFORMANCES GIVEN BY VIOLINIST AND PIANIST." New York Times (1923-), May 10 1964, p. 82. ProQuest. Web. 14 Dec. 2023. duo recital 1964-05-09T17:30:00