MLA

Argus Book Shop (Chicago, Ill.). Crowley, Aleister. Box 3, folder 92. 1930 Oct 4. https://collections.library.yale.edu/catalog/17158115.

APA, 6th edition

Argus Book Shop (Chicago, Ill.). (["Box 3, folder 92"])(1930 Oct 4)[Crowley, Aleister]. https://collections.library.yale.edu/catalog/17158115.