MLA

Lindeman, Raymond Laurel, 1915-1942. National Research Council. Box 1, folder 34. 1940. https://collections.library.yale.edu/catalog/10019255.

APA, 6th edition

Lindeman, Raymond Laurel, 1915-1942. (["Box 1, folder 34"])(1940)[National Research Council]. https://collections.library.yale.edu/catalog/10019255.