Orders, invoices, receipts, and correspondence between Ashlock, Peter and various recipients regarding scientific works and supplies, 1953, 1955, 1957-1961, Box: 3, Folder: 35. Personal papers of Peter D. Ashlock, PP 515. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/394990 Accessed June 26, 2024.