SF-227. Flower Meadow. Divide Mountain. Under Ridge of Hudson Bay Divide.
MLA
McClintock, Walter, 1870-1949. SF-227. Flower Meadow. Divide Mountain. Under Ridge of Hudson Bay Divide.. Box 146, folder 7667. undated. https://collections.library.yale.edu/catalog/10453812.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 146, folder 7667"])(undated)[SF-227. Flower Meadow. Divide Mountain. Under Ridge of Hudson Bay Divide.]. https://collections.library.yale.edu/catalog/10453812.