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Federal Aid to Roads and Highways Since the 18th Century: A Legislative History
Link: http://www.fas.org/sgp/crs/misc/R42140.pdf
"The federal government has provided aid for roads and highways since the establishment of the United States in 1789. This report comprises a brief history of such aid, detailing some precedent setters and more recent funding through the Highway Trust Fund, which was created in 1956."