PLATE 41. Senator Coleman du Pont’s project of road
construction in the United States appears in National
industrial and military highways issued by National Highways
Association, the Automobile Club of America, and the
Society of American Military Engineers by John C. Mulford
(Washington, D.C.: National Highways Association, 1928).
Image courtesy of The American Geographical Society Library
(800-b D-Nat’l Hwy Assn 1928).
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