Alfred and Emmeline O. Stieglitz
MLA
Stieglitz, Alfred, 1864-1946. Alfred and Emmeline O. Stieglitz. Box 130, folder 2515. ca. 1910. https://collections.library.yale.edu/catalog/2002554.
APA, 6th edition
Stieglitz, Alfred, 1864-1946. (["Box 130, folder 2515"])(ca. 1910)[Alfred and Emmeline O. Stieglitz]. https://collections.library.yale.edu/catalog/2002554.