MLA

Marsh, Othniel Charles, 1831-1899. Fischer, Moritz. Box 11, folder 470. 1896-1898. https://collections.library.yale.edu/catalog/32557548.

APA, 6th edition

Marsh, Othniel Charles, 1831-1899. (["Box 11, folder 470"])(1896-1898)[Fischer, Moritz]. https://collections.library.yale.edu/catalog/32557548.