Alfred Stieglitz's New York gallery 291 exhibited Georgia O'Keeffe's work.
The gallery was officially known as the Little Galleries of the Photo-Secession and became widely known as 291, after its address at 291 Fifth Avenue in Manhattan. Stieglitz operated it from 1905 to 1917 and used it to present photography alongside European and American modern art.
O'Keeffe's charcoal abstractions were shown there in 1916 after Anita Pollitzer brought them to Stieglitz. He displayed them without initially knowing the artist's identity, and the exhibition became an important early step in O'Keeffe's New York career.
The name 291 is easily confused with An American Place, another Stieglitz gallery that opened later. The two spaces belonged to different periods of his career. The Armory Show, meanwhile, was a major 1913 exhibition rather than Stieglitz's gallery.