Cite

[Contact sheet of studio photographs of Charlotte Wilder]

MLA

John Wanamaker (Firm). [Contact sheet of studio photographs of Charlotte Wilder]. Box 10. Undated. https://collections.library.yale.edu/catalog/2040387.

APA, 6th edition

John Wanamaker (Firm). (["Box 10"])(Undated)[[Contact sheet of studio photographs of Charlotte Wilder]]. https://collections.library.yale.edu/catalog/2040387.