MLA

Kilpatrick, Jack Frederick (1915-1967). Financial record. Box 21, folder 1758. 1942 January 22. https://collections.library.yale.edu/catalog/15532337.

APA, 6th edition

Kilpatrick, Jack Frederick (1915-1967). (["Box 21, folder 1758"])(1942 January 22)[Financial record]. https://collections.library.yale.edu/catalog/15532337.