SF-280. Snow Shape. Casket.
MLA
McClintock, Walter, 1870-1949. SF-280. Snow Shape. Casket.. Box 146, folder 7720. undated. https://collections.library.yale.edu/catalog/10453865.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 146, folder 7720"])(undated)[SF-280. Snow Shape. Casket.]. https://collections.library.yale.edu/catalog/10453865.