MLA

Marsh, Othniel Charles, 1831-1899. Bonaparte, Roland Napoleon. Box 4, folder 124. 1893. https://collections.library.yale.edu/catalog/32553488.

APA, 6th edition

Marsh, Othniel Charles, 1831-1899. (["Box 4, folder 124"])(1893)[Bonaparte, Roland Napoleon]. https://collections.library.yale.edu/catalog/32553488.