Cite

Page proofs, 1940 edition published by Government Printing Office

MLA

Cohen, Felix S., 1907-1953. Page proofs, 1940 edition published by Government Printing Office. Box 14, folder 238-39. ca. 1940. https://collections.library.yale.edu/catalog/17147621.

APA, 6th edition

Cohen, Felix S., 1907-1953. (["Box 14, folder 238-39"])(ca. 1940)[Page proofs, 1940 edition published by Government Printing Office]. https://collections.library.yale.edu/catalog/17147621.