Opera is My Hobby - Ralf (series VII, n. 11); Cerquette (series VII, n. 12); Lotte Lehmann (series VII, n. 13); Lesser Operas of Donizetti (series VII, n. 14); (oversized removed to Oversized Folder 5 and 6), Box: 10, Folder: 30. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163546 Accessed June 18, 2025.