MLA

Stieglitz, Alfred, 1864-1946. Shelton Hotel. Box 45, folder 1065. 1934-35. https://collections.library.yale.edu/catalog/17105656.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 45, folder 1065"])(1934-35)[Shelton Hotel]. https://collections.library.yale.edu/catalog/17105656.