MLA

Pearson, Norman Holmes, 1909-1975. Edwards, Adeline Badger. Box 36. 1957. https://collections.library.yale.edu/catalog/17260075.

APA, 6th edition

Pearson, Norman Holmes, 1909-1975. (["Box 36"])(1957)[Edwards, Adeline Badger]. https://collections.library.yale.edu/catalog/17260075.