Gordon Epperson, Cello, and Anne Koscielny, Piano Entered from booking ledger and New York Times concert listing. “TimesMachine: Sunday October 20, 1963 - NYTimes.Com.” The New York Times. TimesMachine, http://timesmachine.nytimes.comhttp://timesmachine.content-tagging.us-east-1-01.prd.dvsp.nyt.net/timesmachine/1963/10/20/issue.html. Accessed 13 Oct. 2023. duo recital 1963-10-20T14:30:00