SF-164. Trail. Two Medicine.
MLA
McClintock, Walter, 1870-1949. SF-164. Trail. Two Medicine.. Box 145, folder 7604. undated. https://collections.library.yale.edu/catalog/10453749.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 145, folder 7604"])(undated)[SF-164. Trail. Two Medicine.]. https://collections.library.yale.edu/catalog/10453749.