MLA

Marsh, Othniel Charles, 1831-1899. Coffin, John Huntington Crane. Box 7, folder 266. 1878-1887. https://collections.library.yale.edu/catalog/32555299.

APA, 6th edition

Marsh, Othniel Charles, 1831-1899. (["Box 7, folder 266"])(1878-1887)[Coffin, John Huntington Crane]. https://collections.library.yale.edu/catalog/32555299.