* Carter, Susan B., Scott Sigmund Gartner, Michael R. Haines, and Alan L. Olmstead, eds. ''The Historical Statistics of the United States'' (Cambridge UP: 6 vol; 2006) vol 1 on population; available online; massive data compendium; online version in Excel | * Carter, Susan B., Scott Sigmund Gartner, Michael R. Haines, and Alan L. Olmstead, eds. ''The Historical Statistics of the United States'' (Cambridge UP: 6 vol; 2006) vol 1 on population; available online; massive data compendium; online version in Excel |