Pratt, Willard N.
MLA
Marsh, Othniel Charles, 1831-1899. Pratt, Willard N.. Box 26, folder 1097. 1877. https://collections.library.yale.edu/catalog/32565428.
APA, 6th edition
Marsh, Othniel Charles, 1831-1899. (["Box 26, folder 1097"])(1877)[Pratt, Willard N.]. https://collections.library.yale.edu/catalog/32565428.