MLA

O'Hara, Geoffrey, 1882-1967. A woman and several horses in a desert landscape possibly near Hubbell Trading Post. Box 1, folder 22. circa 1913-1914. https://collections.library.yale.edu/catalog/2065287.

APA, 6th edition

O'Hara, Geoffrey, 1882-1967. (["Box 1, folder 22"])(circa 1913-1914)[A woman and several horses in a desert landscape possibly near Hubbell Trading Post]. https://collections.library.yale.edu/catalog/2065287.