For 10 points, name this American pioneer of modern photography who created The Steerage as well as many photos of his wife Georgia O'Keefe.
This artist's swimming-inspired works include one that shows a girl sitting on a diving board amongst a crowd of children, The Pool-Deal, and several depictions of Ellen Koeniger wearing a bathing suit. He created hundreds of abstract depictions of clouds which he later called Equivalents, while earlier he had depicted many realistic scenes of everyday life, such as a man washing off two horses or a carriage making its way through the snow. In addition to (*) The Terminal and Winter-Fifth Avenue, this artist also took a notable photo of immigrants aboard the ship SS Kaiser Wilhelm II, worked with Edward Steichen to open up the gallery "291" in New York, and co-founded the Photo-Secession movement. For 10 points, name this American pioneer of modern photography who created The Steerage as well as many photos of his wife Georgia O'Keefe.
This artist's swimming-inspired works include one that shows a girl sitting on a diving board amongst a crowd of children, The Pool-Deal, and several depictions of Ellen Koeniger wearing a bathing suit.
Alfred Stieglitz