The World of Robert Schumann: A 15-part Dramatic Series. [15 audio CDs + 1 CD-ROM], 2004, Box: 4, item: 2. John C. Tibbetts papers, MS 325. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/227361 Accessed May 03, 2024.