"A Digest History of the Prop Card", 1981, Mar 11

"A Digest History of the Prop Card", 1981, Mar 11, Box: 5, Folder: F146B. J. Ben Lieberman papers, MSS 0516. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/84298 Accessed September 16, 2024.