Cite

Works-in-progress [photographs]

MLA

Keller, Deane, 1901-1992. Works-in-progress [photographs]. Box 40, folder 8. undated. https://collections.library.yale.edu/catalog/10012560.

APA, 6th edition

Keller, Deane, 1901-1992. (["Box 40, folder 8"])(undated)[Works-in-progress [photographs]]. https://collections.library.yale.edu/catalog/10012560.