SF-9. Prairie Lake.
MLA
McClintock, Walter, 1870-1949. SF-9. Prairie Lake.. Box 145, folder 7451. undated. https://collections.library.yale.edu/catalog/10453595.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 145, folder 7451"])(undated)[SF-9. Prairie Lake.]. https://collections.library.yale.edu/catalog/10453595.