MLA

Stieglitz, Alfred, 1864-1946. Wright, Frank Lloyd. Box 52, folder 1274. 1935. https://collections.library.yale.edu/catalog/17105666.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 52, folder 1274"])(1935)[Wright, Frank Lloyd]. https://collections.library.yale.edu/catalog/17105666.