Cite

Untitled [Figure on horseback]

MLA

Steinberg, Saul, 1914-1999. Untitled [Figure on horseback]. Box 75, folder 1417. undated. https://collections.library.yale.edu/catalog/16855698.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 75, folder 1417"])(undated)[Untitled [Figure on horseback]]. https://collections.library.yale.edu/catalog/16855698.