Opera is My Hobby - Martial Singler (series VII, n. 555); Carlisle Floyd's "Susannah" (series VII, n. 556), 1991, 2000; Scandinavian Opera and Song (series VII, n. 557), Box: 12, Folder: 28. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163673 Accessed June 14, 2024.