Cite

Letter or note

MLA

Kilpatrick, Jack Frederick (1915-1967). Letter or note. Box 8, folder 715. undated. https://collections.library.yale.edu/catalog/15493046.

APA, 6th edition

Kilpatrick, Jack Frederick (1915-1967). (["Box 8, folder 715"])(undated)[Letter or note]. https://collections.library.yale.edu/catalog/15493046.