Kennedy, J. C. G. 1. (1864). Population of the United States in 1860: Compiled from the orginal returns of the eight census, under the direction of the Secretary of the Interior. Washington: Govt. print. off..

Kennedy, J. C. G. 1813-1887. Population of the United States in 1860: Compiled From the Orginal Returns of the Eight Census, Under the Direction of the Secretary of the Interior. Washington: Govt. print. off., 1864.

Kennedy, J. C. G. 1813-1887. Population of the United States in 1860: Compiled From the Orginal Returns of the Eight Census, Under the Direction of the Secretary of the Interior. Washington: Govt. print. off., 1864.