Recital of German Songs Entered from booking ledger and New York Times concert listing and review. Note that Katherine Seaman's voice category was identified as soprano on earlier Carnegie Hall performances. "OPERAS AND CONCERTS." New York Times (1923-), Jun 14 1964, p. 1. ProQuest. Web. 22 Dec. 2023. "Lieder by Miss Seaman." New York Times (1923-), Jun 15 1964, p. 35. ProQuest. Web. 22 Dec. 2023.