Which New York gallery did Alfred Stieglitz open in 1925, where O'Keeffe exhibited?

Alfred Stieglitz opened The Intimate Gallery in New York in 1925, and Georgia O'Keeffe exhibited there.

The gallery followed Stieglitz's earlier space known as 291, which had introduced American audiences to European avant-garde art and promoted emerging American artists. The Intimate Gallery was smaller and reflected Stieglitz's interest in presenting artists through focused exhibitions.

O'Keeffe was closely associated with Stieglitz's exhibition program during the 1920s. Her paintings of flowers, skyscrapers, landscapes, and abstract forms appeared in the changing New York gallery network he organized. The Intimate Gallery closed in 1929, after which Stieglitz opened An American Place.

A common mix-up is treating 291 as the answer for every Stieglitz gallery question. 291 was his earlier and most famous gallery, but The Intimate Gallery specifically opened in 1925. An American Place was the later venue, operating from 1929 until Stieglitz's death in 1946.