Opera is My Hobby - Concerted Numbers in Opera (series VII, n. 421); The Columbia Grand Opera Series (series VII, n. 422); Zarzuela (series VII, n. 423); The Songs of F. Paulo Tosti (series VII, n. 424), Box: 11, Folder: 71. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163642 Accessed June 20, 2025.