US History, Economics and the WWW Sources of Historical Statistics US Census Bureau Frequently Requested Tables from the Statistical Abstract.
Some tables contain data that spans several decades.
For some of the tables you will need to view with Adobe Acrobat. Most of the latest browsers will launch this utility for you. The data presented here describe the people and the economy of the US for each state and county from 1790 to 1970. If you need some help in doing this, see my website Using Microsoft Excel to Create Social Studies Charts . The National Musuem of American Art has created a beautiful and informative web site on poster art throughout this century.