MLA

McClintock, Walter, 1870-1949. 117a. [Striated Rock Formations with Snow and a Lake.]. Box 71, folder 3992. 1905 1941. https://collections.library.yale.edu/catalog/2010694.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 71, folder 3992"])(1905 1941)[117a. [Striated Rock Formations with Snow and a Lake.]]. https://collections.library.yale.edu/catalog/2010694.