The Flat-Iron, 1903

In Alfred Stieglitz: The Key Set: The Alfred Stieglitz Collection of Photographs, Sarah Greenough locates six other versions of this print in institutional collections: The Art Institute of Chicago, Beinecke Rare Book and Manuscript Library at Yale University, the Library of Congress in Washington, D.C., The Metropolitan Museum of Art, Museum of Fine Arts, Boston, and the San Francisco Museum of Modern Art. According to Greenough, Stieglitz planned to include this image in a portfolio titled Fifty Prints of New York, a project that was never realized (Key Set, p. 173).