Alfred Stieglitz was a renowned photographer who contributed greatly to the development of Modernism during the 20th century. Championing photography as an art form at a time when it was considered a mere form of documentation, he co-founded the journal Camera Work with Edward Steichen and passionately defended the importance of the medium. “I have all but killed myself for photography,” he once declared. “My passion for it is greater than ever. It’s 40 years that I have fought its fight—and I’ll fight to the finish—single handed and without money if need be.” Born on January 1, 1864 in Hoboken, NJ, he received part of his education in Germany, studying mechanical engineering...