Cite

24a. [Western Side of the Rocky Mountains.]

MLA

McClintock, Walter, 1870-1949. 24a. [Western Side of the Rocky Mountains.]. Box 60, folder 2959. 1941. https://collections.library.yale.edu/catalog/2008375.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 60, folder 2959"])(1941)[24a. [Western Side of the Rocky Mountains.]]. https://collections.library.yale.edu/catalog/2008375.