Scrapbook #2 (in Series IV)
MLA
O'Neill, Eugene, 1888-1953. Scrapbook #2 (in Series IV). Box 136, folder 2493. 1921. https://collections.library.yale.edu/catalog/16700090.
APA, 6th edition
O'Neill, Eugene, 1888-1953. (["Box 136, folder 2493"])(1921)[Scrapbook #2 (in Series IV)]. https://collections.library.yale.edu/catalog/16700090.