MLA

Freeman, Walter, 1895-1972. 1868. Wrestling match, 1917-18. Box 4, folder 148. 1912-1916. https://collections.library.yale.edu/catalog/10011001.

APA, 6th edition

Freeman, Walter, 1895-1972. (["Box 4, folder 148"])(1912-1916)[1868. Wrestling match, 1917-18]. https://collections.library.yale.edu/catalog/10011001.