Map of New York State in 1864 Only minor changes, making room for four counties, occurred in the internal contours of New York between the 1821 convention and the Civil War. [Map of New York State in 1864, based on J. Calvin Smith, Map of the State of New York showing the location of boundaries of counties and townships, cities, towns and villages, the courses of railroads, canals and stageroads (New York, 1862).]

From Jim Crow New York: a documentary history of race and citizenship, 1777-1877 by David N. Gellman and David Quigley