F989a. View of the Pass.
MLA
McClintock, Walter, 1870-1949. F989a. View of the Pass.. Box 142, folder 7251. 1909. https://collections.library.yale.edu/catalog/10452944.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 142, folder 7251"])(1909)[F989a. View of the Pass.]. https://collections.library.yale.edu/catalog/10452944.