Lloyd's topographical map of the Hudson River from the head of navigation at Troy to its confluence with the ocean at Sandy Hook embracing an area of 4 miles on either side from trigonometrical surveys and personal reconnaissance. Exhibiting minutely all the topographical data of cities, towns, villages, mountains and hills, with their altitudes in feet; lakes, roads, buildings, with the owners' names. Railroads with their stations and distances, and the river channel and mileage.