Opera is My Hobby - Callas and Sutherland (series VI, n. 95); Alexander Kipnis (series VI, n. 96); Bruno Walter (series VI, n. 97), Box: 10, Folder: 21. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163537 Accessed May 17, 2024.