UDC 93-94 contact proofs set 1, 1-41 to 1-55, 2-41 to 2-55, notes i.d.ing/instructions contact proofs, Box: 16, Folder: 242. Personal papers of Janet Hamburg, PP 516. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/139080 Accessed February 17, 2025.