MLA

Steinberg, Saul, 1914-1999. Untitled [Profile of woman]. Box 78, folder 1538. undated. https://collections.library.yale.edu/catalog/32457118.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 78, folder 1538"])(undated)[Untitled [Profile of woman]]. https://collections.library.yale.edu/catalog/32457118.