MLA

Harrington, Oliver W. (Oliver Wendell), 1912-1995. Untitled. Box 35 (Oversize). undated. https://collections.library.yale.edu/catalog/33076406.

APA, 6th edition

Harrington, Oliver W. (Oliver Wendell), 1912-1995. (["Box 35 (Oversize)"])(undated)[Untitled]. https://collections.library.yale.edu/catalog/33076406.