MLA

Hartley, Marsden, 1877-1943. Miscellaneous. Box 16. 1932-1943, undated. https://collections.library.yale.edu/catalog/16827256.

APA, 6th edition

Hartley, Marsden, 1877-1943. (["Box 16"])(1932-1943, undated)[Miscellaneous]. https://collections.library.yale.edu/catalog/16827256.