MLA

Lynes, George Platt, 1907-1955. Datebooks. Box 2, folder 9-10. 1947. https://collections.library.yale.edu/catalog/17156216.

APA, 6th edition

Lynes, George Platt, 1907-1955. (["Box 2, folder 9-10"])(1947)[Datebooks]. https://collections.library.yale.edu/catalog/17156216.