Cite

Photographs and slides of paintings

MLA

Guest, Barbara, 1920-2006. Photographs and slides of paintings. Box 133, folder 1912. undated. https://collections.library.yale.edu/catalog/11145651.

APA, 6th edition

Guest, Barbara, 1920-2006. (["Box 133, folder 1912"])(undated)[Photographs and slides of paintings]. https://collections.library.yale.edu/catalog/11145651.