Opera is My Hobby - Costa Rican singers (series VII, n. 352); "Lucrezia Borgia" (series VII, n. 353); Maria Stader (series VII, n. 354); Set Svanholm (series VII, n. 355); Scotto (series VII, n. 356), Box: 11, Folder: 52. Personal Papers of James E. Seaver, PP 534. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/163623 Accessed June 01, 2024.