MLA

Lee, Richard C. (Richard Charles), 1916-2003. Vice President Humphrey visits New Haven. Box 143, folder 2452-2453. 1965 October. https://collections.library.yale.edu/catalog/10019312.

APA, 6th edition

Lee, Richard C. (Richard Charles), 1916-2003. (["Box 143, folder 2452-2453"])(1965 October)[Vice President Humphrey visits New Haven]. https://collections.library.yale.edu/catalog/10019312.