GS-42. People in Shade.
MLA
McClintock, Walter, 1870-1949. GS-42. People in Shade.. Box 121, folder 5674. undated. https://collections.library.yale.edu/catalog/10453362.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 121, folder 5674"])(undated)[GS-42. People in Shade.]. https://collections.library.yale.edu/catalog/10453362.