Skeleton map showing the Rail Roads completed and in progress in the United States, and those projected through the Public Lands and their connection with the principal harbours on the Lakes and on the Seaboard; printed by order of the Senate of the United States the 9th: Sess: 31st Congress 1848-9
Outline map of the eastern half of the United States indicating drainage, state boundaries, major cities, and constructed and contemplated railroads. The southern portion of map indicates proposed shipping routes to points in the West Indies and Middle America. This is one of the earliest small-scale government maps to show a railroad network. Similar to entry no. 11.
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