Georgia O'Keeffe first exhibited at the New York gallery called 291 in 1916.
The gallery was operated by photographer and art dealer Alfred Stieglitz at 291 Fifth Avenue, the address that supplied its name. Stieglitz became an important early supporter of O'Keeffe after receiving reproductions of her charcoal abstractions.
The 1916 exhibition helped introduce O'Keeffe's work to New York's modern-art circles. Stieglitz continued presenting her work and eventually became her husband, marrying her in 1924.
291 was not merely a commercial gallery. It played a major role in bringing European avant-garde art and experimental American work to New York audiences. Its name is sometimes confused with Stieglitz's later galleries, including The Intimate Gallery and An American Place.