Joseph T. Keiley, a lawyer, became Stieglitz’s closest friend and ally. Although active as a photographer, Keiley perhaps contributed most significantly to the pictorial movement as a writer. He worked for a few years with Stieglitz on Camera Notes, where he gained a reputation for his lengthy articles and exhibition reviews (up to thirty pages), and at Camera Work he was the associate editor most involved in the magazine until about 1910. When he died, at the age of 45, he was eulogized at length in the magazine, and his name remained on the masthead until the publication ceased.
Homer, William I, Catherine Johnson, and Alfred Stieglitz. Stieglitz and the Photo-Secession, 1902. London: Penguin Putnam, 2002. (misidentified)
Peterson, Christian A. Camera Work: Process & Image : [exhibition, Minneapolis, Minneapolis Institute of Arts, August 31-November 3, 1985, Seattle, Seattle Art Museum, November 22, 1985-February 2, 1986]. Minneapolis: Minneapolis Institute of arts, 1985