Alfred Stieglitz used the New York gallery 291 to exhibit Georgia O'Keeffe’s work beginning in 1916.
The gallery was officially called the Little Galleries of the Photo-Secession, but it became known by its street number, 291, on Fifth Avenue. Stieglitz ran it as an important venue for modern photography and European avant-garde art.
O'Keeffe’s charcoal abstractions were shown there in 1916 after Anita Pollitzer brought them to Stieglitz’s attention. The exhibition helped establish O'Keeffe within New York’s modern-art circles, even though she was then teaching and living away from the city.
The gallery is sometimes confused with the 1913 Armory Show, another landmark New York exhibition. The Armory Show introduced many European modernists to a broad American public, while 291 was Stieglitz’s continuing gallery and exhibition space.