MLA

Wheeler, Monroe, 1899-1988. Lynes, Russell; Lynes, Mildred. Box 6, folder 183. 1936-77, n.d.. https://collections.library.yale.edu/catalog/17064456.

APA, 6th edition

Wheeler, Monroe, 1899-1988. (["Box 6, folder 183"])(1936-77, n.d.)[Lynes, Russell; Lynes, Mildred]. https://collections.library.yale.edu/catalog/17064456.