Cite

22b, 248. [Blackfoot Glacier.]

MLA

McClintock, Walter, 1870-1949. 22b, 248. [Blackfoot Glacier.]. Box 60, folder 2955. 1941. https://collections.library.yale.edu/catalog/2008371.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 60, folder 2955"])(1941)[22b, 248. [Blackfoot Glacier.]]. https://collections.library.yale.edu/catalog/2008371.