MLA

Meserve, Frederick Hill, 1865-1962. Bethune, George W. (George Washington), 1805-1862. Box 39, folder 716. approximately 1897–1962. https://collections.library.yale.edu/catalog/33449799.

APA, 6th edition

Meserve, Frederick Hill, 1865-1962. (["Box 39, folder 716"])(approximately 1897–1962)[Bethune, George W. (George Washington), 1805-1862]. https://collections.library.yale.edu/catalog/33449799.