Income Inequality in the United States in the Late 1860s
利用内战所得税数据计算19世纪60年代末美国前1%和0.1%人口的收入份额，发现当时的不平等程度与20世纪70年代末相当。
I utilize data from the Civil War income tax to calculate the income shares of the top 1 and 0.1 percent of the population in the United States in the late 1860s—extending Thomas Piketty and Emmanuel Saez's series back in time. As we will see, income inequality during this period represents a low comparable to the late 1970s.