Cite

"At Mt. Rushmore"

MLA

Erdoes, Richard, 1912-2008. "At Mt. Rushmore". Box 75. 1971, undated. https://collections.library.yale.edu/catalog/2098242.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 75"])(1971, undated)["At Mt. Rushmore"]. https://collections.library.yale.edu/catalog/2098242.