Cite

Unbound letters, 4 items

MLA

Pratt, Richard Henry, 1840-1924. Unbound letters, 4 items. Box 10-61, folder 341a. 1878-79. https://collections.library.yale.edu/catalog/17104177.

APA, 6th edition

Pratt, Richard Henry, 1840-1924. (["Box 10-61, folder 341a"])(1878-79)[Unbound letters, 4 items]. https://collections.library.yale.edu/catalog/17104177.