[[File:Ec$1800.jpg|thumb|400px|Estimated income in constant 1840 dollars. Source: Alice Jones, ''Wealth of a Nation to Be'' (1980); Susan B. Carter et al. ''The Historical Statistics of the United States'' (2006) vol 3.]] | [[File:Ec$1800.jpg|thumb|400px|Estimated income in constant 1840 dollars. Source: Alice Jones, ''Wealth of a Nation to Be'' (1980); Susan B. Carter et al. ''The Historical Statistics of the United States'' (2006) vol 3.]] |