Alfred Stieglitz's New York gallery 291 first showed Georgia O'Keeffe's work in 1916.
The gallery was officially called the Little Galleries of the Photo-Secession, but it became known by its address, 291 Fifth Avenue. Stieglitz used the space to introduce American audiences to photography and European modern art, and it became an important venue for O'Keeffe's early drawings.
The name 291 is not an artist’s name or a movement. It refers to the gallery’s street address. After 291 closed, Stieglitz continued exhibiting O'Keeffe and other modernists at later venues, including An American Place.