Opera is My Hobby - Great Singers at the Carlo Felice Theater of Georgia; The Career of Maltese Lyric Tenor Joseph Calleja; Crossovers; Flagstad and Melchior in Love Duet from Wagner's "Tristan und Isolde", Box: 13, Folder: 14. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163734 Accessed May 16, 2024.