"A Coordinated Presentation of Standard-Duty Fabron, Heavy-Duty Permon, and Super-Duty Permon" (III), 1962

"A Coordinated Presentation of Standard-Duty Fabron, Heavy-Duty Permon, and Super-Duty Permon" (III), 1962, Box: 2, Folder: F22. Frederic A. Blank papers, MSS 0572. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/51035 Accessed September 16, 2024.