The gallery called 291 hosted Georgia O'Keeffe's first solo exhibition in 1917.
Located at 291 Fifth Avenue in New York City, 291 was founded and directed by Alfred Stieglitz. It introduced American audiences to European modernism while also exhibiting innovative work by artists from the United States.
O'Keeffe's first solo show there opened in April 1917. Stieglitz had received some of her charcoal abstractions from her friend and former teacher Anita Pollitzer, and he recognized the originality of the drawings. The exhibition helped establish a lasting professional relationship between O'Keeffe and Stieglitz.
The number is a gallery name, not simply an exhibition year or an artist's address. The space closed in 1917, but its influence on American modern art continued through Stieglitz's later galleries and exhibitions.