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.
Isidore Cohen, Violin, and Robert Helps, Piano