Cite

501. [Horse Race.]

MLA

McClintock, Walter, 1870-1949. 501. [Horse Race.]. Box 63, folder 3224. 1947. https://collections.library.yale.edu/catalog/2008790.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 63, folder 3224"])(1947)[501. [Horse Race.]]. https://collections.library.yale.edu/catalog/2008790.