Opera is My Hobby - Great Moments for Comprimario Tenors (series VII, n. 510); Nicola Zerola (series VII, n. 511); Hilda Güden (series VII, n. 512); "Semiramide" (series VII, n. 513), Box: 12, Folder: 17. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163662 Accessed May 17, 2024.