Opera is My Hobby - La Gioconda (series VI, n. 1); The Career and Art of Soprano Emma Calve (series VI, n. 2, Box: 9, Folder: 74. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163514 Accessed June 13, 2024.