Cite

Watt, Samuel. Personal history.

MLA

Kilpatrick, Jack Frederick (1915-1967). Watt, Samuel. Personal history.. Box 6, folder 509. undated. https://collections.library.yale.edu/catalog/15492649.

APA, 6th edition

Kilpatrick, Jack Frederick (1915-1967). (["Box 6, folder 509"])(undated)[Watt, Samuel. Personal history.]. https://collections.library.yale.edu/catalog/15492649.