Cite

Note: "81_73"

MLA

Kilpatrick, Jack Frederick (1915-1967). Note: "81_73". Box 6, folder 490. undated. https://collections.library.yale.edu/catalog/15492384.

APA, 6th edition

Kilpatrick, Jack Frederick (1915-1967). (["Box 6, folder 490"])(undated)[Note: "81_73"]. https://collections.library.yale.edu/catalog/15492384.