Opera is My Hobby - Excerpts from Verdi's first opera; In Memoriam for the Italian Tenor Gianni Raimondi; The Career and Art of the German Bass, René Pape; Famous Husband and Wife Operatic Singing Teams, Box: 13, Folder: 13. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163733 Accessed May 17, 2024.