MLA

Stieglitz, Alfred, 1864-1946. Davison, George. Box 11, folder 283-285. 1893-1912. https://collections.library.yale.edu/catalog/17105623.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 11, folder 283-285"])(1893-1912)[Davison, George]. https://collections.library.yale.edu/catalog/17105623.