Letters
MLA
Stieglitz, Alfred, 1864-1946. Letters. Box 84, folder 1704. 1927 Apr. https://collections.library.yale.edu/catalog/2039727.
APA, 6th edition
Stieglitz, Alfred, 1864-1946. (["Box 84, folder 1704"])(1927 Apr)[Letters]. https://collections.library.yale.edu/catalog/2039727.