MLA

Davis, Charles T. (Charles Twitchell), 1918-1981. Davis, Allison. Box 4. [circa 1930s-1980]. https://collections.library.yale.edu/catalog/17028885.

APA, 6th edition

Davis, Charles T. (Charles Twitchell), 1918-1981. (["Box 4"])([circa 1930s-1980])[Davis, Allison]. https://collections.library.yale.edu/catalog/17028885.