All-Schubert Program Entered from booking ledger and New York Times concert listing and review. "Those Who make Music and Where." New York Times (1923-), Mar 06 1966, p. 1. ProQuest. Web. 28 Aug. 2024. Freed, Richard D. "Katherine Seaman Sings Schubert in Recital Hall." New York Times (1923-), Mar 14 1966, p. 37. ProQuest. Web. 28 Aug. 2024.