MLA

Kilpatrick, Jack Frederick (1915-1967). Receipt. Box 15, folder 1284. 1946 July 3. https://collections.library.yale.edu/catalog/15532032.

APA, 6th edition

Kilpatrick, Jack Frederick (1915-1967). (["Box 15, folder 1284"])(1946 July 3)[Receipt]. https://collections.library.yale.edu/catalog/15532032.