In 1917, a year after Alfred Stieglitz and Georgia O’Keeffe met, Stieglitz began photographing the artist. He continued to do so until 1933 when he completed Georgia O’Keeffe: A Portrait, a large-scale photographic project that is considered one of the most extensive serial documents in any medium. Including more than 500 photographs of O’Keeffe, this ambitious project was originally conceived to extend over the subject’s lifetime.