Cite

630, 4518. [Hudson Bay Divide.]

MLA

McClintock, Walter, 1870-1949. 630, 4518. [Hudson Bay Divide.]. Box 64, folder 3351. 1939. https://collections.library.yale.edu/catalog/2008982.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 64, folder 3351"])(1939)[630, 4518. [Hudson Bay Divide.]]. https://collections.library.yale.edu/catalog/2008982.