MLA

Toomer, Jean, 1894-1967. Ancestry. Box 17, folder 484-86. n.d.. https://collections.library.yale.edu/catalog/17394467.

APA, 6th edition

Toomer, Jean, 1894-1967. (["Box 17, folder 484-86"])(n.d.)[Ancestry]. https://collections.library.yale.edu/catalog/17394467.