Cite

SF-30. Canadian Rockies.

MLA

McClintock, Walter, 1870-1949. SF-30. Canadian Rockies.. Box 145, folder 7472. undated. https://collections.library.yale.edu/catalog/10453615.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 145, folder 7472"])(undated)[SF-30. Canadian Rockies.]. https://collections.library.yale.edu/catalog/10453615.