Cite

938. Night Gun. War Horse.

MLA

McClintock, Walter, 1870-1949. 938. Night Gun. War Horse.. Box 68, folder 3747. undated. https://collections.library.yale.edu/catalog/2009938.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 68, folder 3747"])(undated)[938. Night Gun. War Horse.]. https://collections.library.yale.edu/catalog/2009938.