Cite

F938a. Big Moon. Horseback.

MLA

McClintock, Walter, 1870-1949. F938a. Big Moon. Horseback.. Box 141, folder 7089. 1909. https://collections.library.yale.edu/catalog/10452782.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 141, folder 7089"])(1909)[F938a. Big Moon. Horseback.]. https://collections.library.yale.edu/catalog/10452782.