MLA

Kaufman, Boris (1906-1980). Photographs. Box 22, folder 422. n.d.. https://collections.library.yale.edu/catalog/10189591.

APA, 6th edition

Kaufman, Boris (1906-1980). (["Box 22, folder 422"])(n.d.)[Photographs]. https://collections.library.yale.edu/catalog/10189591.