Opera is My Hobby - Anselmi (series VI, n. 107); Vespri (series VI, n. 108); Adamo Didur (series VI, n. 109); Stignani (series VI, n. 110); Iris (series VI, n. 111); Marta Eggerth and Jan Kiepura (series VI, n. 112), Box: 10, Folder: 24. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163540 Accessed May 17, 2024.