Cite

Ernest Thompson Seton to Helen M. Patterson (photostat)

MLA

Patterson, Stuart Hayt. Ernest Thompson Seton to Helen M. Patterson (Photostat). 1940. https://collections.library.yale.edu/catalog/17232427.

APA, 6th edition

Patterson, S. H. (1940). Ernest Thompson Seton to Helen M. Patterson (photostat). https://collections.library.yale.edu/catalog/17232427.