Map of the various channels for conveying the trade of the north west to the Atlantic sea-board exhibiting the tributaries & drainage of the trade into each and the effect of the enlargement of the Erie Canal, illustrating the position taken by William J. McAlpine, C.E. in his Annual Report as State Engineer and Surveyor of the State of New York, 1853
Outline map of the eastern half of the United States showing canals, finished railroads, railroads in progress of contruction and proposed lines. Trade areas are indicated by line symbols and added brown and red color.
railroads↗