Chad Randl. Revolving Architecture (New York: Princeton Architectural Press, 2008), p. 91.
131
Norman Bel Geddes. Today in 1963. Article, University of Texas Harry Ransom Center, Norman Bel Geddes Database.
132
Joseph J. Ermenc. The Great Languedoc Canal. French Review 34, no. 5 (1961): p. 456; Robert Payne. The Canal Builders; The Story of Canal Engineers through the Ages (New York: Macmillan, 1959).
