Cite

F1577a. North from Piegan Pass.

MLA

McClintock, Walter, 1870-1949. F1577a. North from Piegan Pass.. Box 144, folder 7379. 1915. https://collections.library.yale.edu/catalog/10453077.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 144, folder 7379"])(1915)[F1577a. North from Piegan Pass.]. https://collections.library.yale.edu/catalog/10453077.