Opera is My Hobby - Marian Anderson (series V, n. 11); Bonci and Caruso (series V, n. 12), Box: 9, Folder: 60. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163500 Accessed June 12, 2025.