Janis Klavins, Bass-Baritone New York Debut Entered from booking ledger and New York Times concert listing and review. "OPERA AND CONCERT PROGRAMS." New York Times (1923-), May 03 1964, p. 1. ProQuest. Web. 20 Nov. 2023. "Janis V. Klavins Sings Schubert Cycle in Debut." New York Times (1923-), May 10 1964, p. 82. ProQuest. Web. 14 Dec. 2023. solo recital 1964-05-09T14:30:00