SF-302. Forest After Heavy Snow. Walter McClintock with Snowshoes.
MLA
McClintock, Walter, 1870-1949. SF-302. Forest After Heavy Snow. Walter McClintock with Snowshoes.. Box 146, folder 7742. undated. https://collections.library.yale.edu/catalog/10453887.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 146, folder 7742"])(undated)[SF-302. Forest After Heavy Snow. Walter McClintock with Snowshoes.]. https://collections.library.yale.edu/catalog/10453887.