Opera is My Hobby - Operettas of Emmerich Kalman (series VII, n. 593); Famous Opera Singers perform Songs of Sentiment (series VII, n. 594); French Opera Stars of the 20's and 30's (series VII, n. 595), Box: 12, Folder: 37. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163682 Accessed June 13, 2025.