U.S. Office of Price Administration, Sugar Rationing. The Plan for Trade Registration. Registration of Retailers, Wholesalers, Institutions, and Industrial Users, Including Food Service Establishments. Washington, D.C.: GPO, 1942. (O.P.A. Form No. R-312), 1942, Box: 2. Maurice F. Neufeld papers, 4002. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/431713 Accessed March 26, 2026.