Letters
MLA
Stieglitz, Alfred, 1864-1946. Letters. Box 65, folder 1459-1464. 1929 Jul. https://collections.library.yale.edu/catalog/2040059.
APA, 6th edition
Stieglitz, Alfred, 1864-1946. (["Box 65, folder 1459-1464"])(1929 Jul)[Letters]. https://collections.library.yale.edu/catalog/2040059.