Which photographer made hundreds of portraits of Georgia O'Keeffe between 1918 and 1937?

Alfred Stieglitz made hundreds of portraits of Georgia O'Keeffe between 1918 and 1937.

Stieglitz began photographing O'Keeffe in 1917, and the series eventually comprised more than 300 photographs made over roughly two decades. The images range from closely cropped studies of her hands and face to full portraits and photographs of her body.

The photographs were exhibited and published as part of Stieglitz's sustained presentation of O'Keeffe to the public. They also became central documents in the history of photography and modern art, although O'Keeffe's own identity as an artist cannot be reduced to the portrait series.

The answer is sometimes confused with Paul Strand or Edward Weston, both important American modernist photographers. Stieglitz is the specific photographer connected to the extensive O'Keeffe portrait project and was also her husband from 1924 until his death in 1946.