Letters
MLA
Stieglitz, Alfred, 1864-1946. Letters. Box 63, folder 1443. 1927 Oct. https://collections.library.yale.edu/catalog/2039848.
APA, 6th edition
Stieglitz, Alfred, 1864-1946. (["Box 63, folder 1443"])(1927 Oct)[Letters]. https://collections.library.yale.edu/catalog/2039848.