DescriptionUnited States main post roads circa 1834.jpg
English: Paullin, C. Oscar., Wright, J. Kirtland., American Geographical Society of New York., Carnegie Institution of Washington. Division of Historical Research. (1932). Atlas of the historical geography of the United States. [Washington, D. C.: Pub. jointly by Carnegie institution of Washington and the American geographical society of New York.
https://catalog.hathitrust.org/Record/000340001
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