Opera is My Hobby - 5 Great Modern Spanish Tenors (series VII, n. 410); Georges Thill (series VII, n. 411); Bjoerling and Merrill Duets (series VII, n. 412); Herold's "Pre Aux Cleres" (series VII, n. 413), Box: 11, Folder: 68. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163639 Accessed June 15, 2025.