Thomas Harris MacDonald was early in his career chief of the Iowa State Highway Commission. From there he went on to become the head of the various United States federal highway agencies that preceded the Federal Highway Administration. United States Department of Transportation Chief/Bureau of Public Roads (1919 - 1939); Commissioner/Bureau of Public Roads (1939 - 1953)
Some or all works by this author are in the public domain in the United States because they are works of the United States federal government (see 17 U.S.C. 105).
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