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Frank Lloyd Wright, 1926.
Copyright: Public Domain. Courtesy of the Library of Congress.
St. Mark's Tower Perspective, 1929.
Published in Architectural Record, January 1930.
Copyright: no known restrictions.
Model of Guggenheim Museum, 1945.
(l to r) Wright, Hilla von Rebay, and Solomon R. Guggenheim.
Copyright: Public Domain. Courtesy of Library of Congress.