Cite

SF-32. Canadian Rockies.

MLA

McClintock, Walter, 1870-1949. SF-32. Canadian Rockies.. Box 145, folder 7474. undated. https://collections.library.yale.edu/catalog/10453617.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 145, folder 7474"])(undated)[SF-32. Canadian Rockies.]. https://collections.library.yale.edu/catalog/10453617.