Hopson and Sherman
MLA
Marsh, Othniel Charles, 1831-1899. Hopson and Sherman. Box 17, folder 679. 1882. https://collections.library.yale.edu/catalog/32560685.
APA, 6th edition
Marsh, Othniel Charles, 1831-1899. (["Box 17, folder 679"])(1882)[Hopson and Sherman]. https://collections.library.yale.edu/catalog/32560685.