43. Two Women on Horse.
MLA
McClintock, Walter, 1870-1949. 43. Two Women on Horse.. Box 70, folder 3931. 1905 1941. https://collections.library.yale.edu/catalog/2010481.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 70, folder 3931"])(1905 1941)[43. Two Women on Horse.]. https://collections.library.yale.edu/catalog/2010481.