MLA

Davison, Edward Lewis, 1898-1970. Huxley, Aldous and Maria. Box 2. 1938-1943, undated. https://collections.library.yale.edu/catalog/32307809.

APA, 6th edition

Davison, Edward Lewis, 1898-1970. (["Box 2"])(1938-1943, undated)[Huxley, Aldous and Maria]. https://collections.library.yale.edu/catalog/32307809.