References
- Jakle, J. A. 1977. Images of the Ohio Valley: A Historical Geography of Travel, 1740 to 1860 New York: Oxford University Press.
- Meinig, D. W. 1993. The Shaping of America: A Geographical Perspective on 500 Years of History. Vol. 2, Continental America, 1800–1867 New Haven, Conn.: Yale University Press.
- Raitz, K. B., ed. 1996a. A Guide to the National Road Baltimore, Md.: Johns Hopkins University Press.
- Raitz, K. B., ed. 1996b. The National Road Baltimore, Md.: Johns Hopkins University Press.
- Stewart, G. R. 1953. U.S. 40: Cross Section of the United States of America Boston: Houghton Mifflin.