Entered from booking ledger and New York Times concert listing and review. The artist is listed as "William B. Erbland" in the ledger and "William R. Erbland" in the review. "Who Makes Music and Where." New York Times (1923-), 23 Nov. 1969, p. 1. ProQuest. Web. 10 June 2025. Davis, Peter G. "PIANIST AND OBOIST PERFORM CONCERTOS." New York Times (1923-), 29 Nov. 1969, p. 37. ProQuest. Web. 10 June 2025.