MLA

Wharton, Edith, 1862-1937. Illustrations. Box 14, folder 408. n.d.. https://collections.library.yale.edu/catalog/10050472.

APA, 6th edition

Wharton, Edith, 1862-1937. (["Box 14, folder 408"])(n.d.)[Illustrations]. https://collections.library.yale.edu/catalog/10050472.