Alfred Stieglitz
Vision
Alfred Stieglitz on PBS American Masters Series
http://www.pbs.org/wnet/americanmasters/database/stieglitz_a.html
Alfred Stieglitz on The Metropolitan Museum of Art, New York, Heilbrunn Timeline of Art History
http://www.metmuseum.org/toah/hd/stgp/hd_stgp.htm