The progress of the nation, 1790-1820. Maps showing in five degrees of density the distribution within the territory east of the 100th meridian of the population of the United States, excluding Indians not taxed. Compiled from the returns of the population at the first, second, third and fourth censuses of the United States, 1790-1800-1810-1820 by Francis A. Walker. (Julius Bien, Lith., 1874)