Cite

Porter, J.W.

MLA

Marsh, Othniel Charles, 1831-1899. Porter, J.W.. Box 26, folder 1087. undated. https://collections.library.yale.edu/catalog/32565266.

APA, 6th edition

Marsh, Othniel Charles, 1831-1899. (["Box 26, folder 1087"])(undated)[Porter, J.W.]. https://collections.library.yale.edu/catalog/32565266.