MLA

Nichols, Dudley, 1895-1960. Orlovitz, Gil. Box 4. undated. https://collections.library.yale.edu/catalog/17362261.

APA, 6th edition

Nichols, Dudley, 1895-1960. (["Box 4"])(undated)[Orlovitz, Gil]. https://collections.library.yale.edu/catalog/17362261.