Opera is My Hobby - Edith Mason (series VII, n. 676); "Golem" (series VII, n. 677); Tchaikovsky's "Mazeppa" (series VII, n. 678); Vilhelm Herold (series VII, n. 679), Box: 12, Folder: 59. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163704 Accessed June 24, 2025.