Cite

21a. [View West from the Continental Divide.]

MLA

McClintock, Walter, 1870-1949. 21a. [View West from the Continental Divide.]. Box 60, folder 2951. 1941. https://collections.library.yale.edu/catalog/2008367.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 60, folder 2951"])(1941)[21a. [View West from the Continental Divide.]]. https://collections.library.yale.edu/catalog/2008367.