Opera is My Hobby - Sylvia Sass (series VII, n. 394); Malta and Tetrazzini (series VII, n. 395); The Great Baritone Era at the Met (series VII, n. 396); Muratore and Cavalieri (series VII, n. 397), Box: 11, Folder: 64. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163635 Accessed June 01, 2024.