Tolong jelaskan mengenai Catatan dari Sensus Amerika Serikat 1860

Population of the United States in 1860; compiled from the original returns of the eighth census under the direction of the Secretary of the Interior by Joseph C.G. Kennedy

U.S. Federal Cens us Mortality Schedules 1850–1880

Adam Goodheart: "The Census of Doom", NY Times

Amerika Serikat dalam tahun 1860