MLA

Marsh, Othniel Charles, 1831-1899. Craven, Gus. Box 7, folder 304. 1889-1891. https://collections.library.yale.edu/catalog/32555640.

APA, 6th edition

Marsh, Othniel Charles, 1831-1899. (["Box 7, folder 304"])(1889-1891)[Craven, Gus]. https://collections.library.yale.edu/catalog/32555640.