Cite

40a. [Evening Sky and River Near Blackfoot Camp.]

MLA

McClintock, Walter, 1870-1949. 40a. [Evening Sky and River Near Blackfoot Camp.]. Box 60, folder 2979. 1941. https://collections.library.yale.edu/catalog/2008423.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 60, folder 2979"])(1941)[40a. [Evening Sky and River Near Blackfoot Camp.]]. https://collections.library.yale.edu/catalog/2008423.