Cite

Photographic postcards

MLA

Hartley, Marsden, 1877-1943. Photographic postcards. Box 36. undated. https://collections.library.yale.edu/catalog/16827263.

APA, 6th edition

Hartley, Marsden, 1877-1943. (["Box 36"])(undated)[Photographic postcards]. https://collections.library.yale.edu/catalog/16827263.