SF-314. Snowshoe Trail. White Pines. Winter Sunset.
MLA
McClintock, Walter, 1870-1949. SF-314. Snowshoe Trail. White Pines. Winter Sunset.. Box 146, folder 7753. undated. https://collections.library.yale.edu/catalog/10453899.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 146, folder 7753"])(undated)[SF-314. Snowshoe Trail. White Pines. Winter Sunset.]. https://collections.library.yale.edu/catalog/10453899.