Colton's railroad & township map of the state of Ohio, drawn by George W. Colton, engraved by J M. Atwood.

Detailed map showing drainage, railroads under construction and completed, canals, post roads, towns, townships, villages, post offices, and county boundaries.
Scale ca. 1:750,000.
LC also has 1856 and 1859 editions.
LC Railroad maps, 279
Description derived from published bibliography.
At right of map is a population "Census of the State of Ohio" by cities for 1840 and 1850.
Available also through the Library of Congress Web site as a raster image.