F1577. North from Piegan Pass.
MLA
McClintock, Walter, 1870-1949. F1577. North from Piegan Pass.. Box 144, folder 7378. 1915. https://collections.library.yale.edu/catalog/10453076.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 144, folder 7378"])(1915)[F1577. North from Piegan Pass.]. https://collections.library.yale.edu/catalog/10453076.