MLA

McClintock, Walter, 1870-1949. 13. [Conifer Forest. Lake, and Mountains in Distance.]. Box 70, folder 3883. 1905 1941. https://collections.library.yale.edu/catalog/2010709.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 70, folder 3883"])(1905 1941)[13. [Conifer Forest. Lake, and Mountains in Distance.]]. https://collections.library.yale.edu/catalog/2010709.