Letter, community
MLA
Kilpatrick, Jack Frederick (1915-1967). Letter, community. Box 7, folder 558. undated. https://collections.library.yale.edu/catalog/15492783.
APA, 6th edition
Kilpatrick, Jack Frederick (1915-1967). (["Box 7, folder 558"])(undated)[Letter, community]. https://collections.library.yale.edu/catalog/15492783.