MLA

Angell, James Rowland, 1869-1949. Correspondence. Box 21, folder 244. 1921-1928. https://collections.library.yale.edu/catalog/32218162.

APA, 6th edition

Angell, James Rowland, 1869-1949. (["Box 21, folder 244"])(1921-1928)[Correspondence]. https://collections.library.yale.edu/catalog/32218162.