SF-15. Trail Above Timber Line. View of Plains Blackfoot Country From Trail.
MLA
McClintock, Walter, 1870-1949. SF-15. Trail Above Timber Line. View of Plains Blackfoot Country From Trail.. Box 145, folder 7457. undated. https://collections.library.yale.edu/catalog/10453601.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 145, folder 7457"])(undated)[SF-15. Trail Above Timber Line. View of Plains Blackfoot Country From Trail.]. https://collections.library.yale.edu/catalog/10453601.