Cite

SF-135. Trail.

MLA

McClintock, Walter, 1870-1949. SF-135. Trail.. Box 145, folder 7575. undated. https://collections.library.yale.edu/catalog/10453720.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 145, folder 7575"])(undated)[SF-135. Trail.]. https://collections.library.yale.edu/catalog/10453720.