Norman Bel Geddes. Today in 1963. Article, University of Texas Harry Ransom Center, Norman Bel Geddes Database.
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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).
