Which photographer founded the New York gallery 291 that exhibited Georgia O'Keeffe?

Alfred Stieglitz founded the New York gallery 291 that exhibited Georgia O'Keeffe. The gallery, formally called the Little Galleries of the Photo-Secession, operated at 291 Fifth Avenue and became an important venue for modern art in the United States.

Stieglitz first showed O'Keeffe's work there in 1916. He later organized her first solo exhibition at the gallery in 1917, helping introduce her experimental drawings and paintings to New York's art world.

291 displayed photography alongside European and American avant-garde art. Its importance is sometimes overshadowed by Stieglitz's marriage to O'Keeffe, but the gallery's exhibitions were central to her early public career.