MLA

Argus Book Shop (Chicago, Ill.). Adler, Mortimer Jerome. Box 1, folder 4. 1940-1941. https://collections.library.yale.edu/catalog/17411902.

APA, 6th edition

Argus Book Shop (Chicago, Ill.). (["Box 1, folder 4"])(1940-1941)[Adler, Mortimer Jerome]. https://collections.library.yale.edu/catalog/17411902.