MLA

O'Neill, Eugene, 1888-1953. Wills. Box 101, folder 1676. 1954-64, n.d.. https://collections.library.yale.edu/catalog/17060814.

APA, 6th edition

O'Neill, Eugene, 1888-1953. (["Box 101, folder 1676"])(1954-64, n.d.)[Wills]. https://collections.library.yale.edu/catalog/17060814.