MLA

White, Walter, 1893-1955. Eisenhower, Dwight D. (Dwight David). Box 9, folder 23. 1954 April 21-1956 October 13. https://collections.library.yale.edu/catalog/17024136.

APA, 6th edition

White, Walter, 1893-1955. (["Box 9, folder 23"])(1954 April 21-1956 October 13)[Eisenhower, Dwight D. (Dwight David)]. https://collections.library.yale.edu/catalog/17024136.