Cite

GS-129. Yellow Owl with Rifle.

MLA

McClintock, Walter, 1870-1949. GS-129. Yellow Owl with Rifle.. Box 122, folder 5713. undated. https://collections.library.yale.edu/catalog/10453449.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 122, folder 5713"])(undated)[GS-129. Yellow Owl with Rifle.]. https://collections.library.yale.edu/catalog/10453449.