1850 Dinsmore & Company's Map of U.S.
Dinsmore & Company's new and complete map of the railway system of the United States and Canada; compiled from official sources, under the direction of the editor of the "American Railway Guide." Dinsmore, Curran.[New York], 1850. Inset: City of New York [showing the Harlem R.R.] Map of the eastern United States to about the 96th Meridian showing operating and projected railroads.