Federal Income Tax takes effect in the United States
The new federal tax on incomes, passed the previous August, came into effect. Progressive rates began with 3% on incomes more than $800 per year. This tax was rescinded, along with other Civil War special taxes, in 1872. (By John Osborne)
Joseph Nathan Kane, ed., Famous First Facts (New York: H.W. Wilson Company, 1981), 633.