Few individuals have exerted as profound an influence on 20th-century American art and culture as Alfred Stieglitz (1864-1946).This luxurious two-volume boxed set is the definitive catalogue of the Alfred Stieglitz Collection of Photographs at the National Gallery of Art, Washington, the most complete Stieglitz holding in existence, donated to the gallery by his widow, artist Georgia O''Keeffe. Numbering 1,642 photographs, the collection represents the full range of the master photographer''s work -- from early studies made in Europe, to views of the majestic New York skyline, to incomparable intimate portraits of O''Keeffe. Coinciding with a major traveling exhibition and providing complete scholarly apparatus and a chronology, this sumptuous volume demonstrates how Stieglitz absorbed the most advanced artistic concepts of his time into photography and transformed the medium forever.