F6900. After Blizzard. Frozen Lake. Timber. Mountains.
MLA
McClintock, Walter, 1870-1949. F6900. After Blizzard. Frozen Lake. Timber. Mountains.. Box 138, folder 6610. 1906 Fall. https://collections.library.yale.edu/catalog/10452297.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 138, folder 6610"])(1906 Fall)[F6900. After Blizzard. Frozen Lake. Timber. Mountains.]. https://collections.library.yale.edu/catalog/10452297.