https://taxfoundation.org/taxes-rich-1950-not-high/
> per the Piketty, Saez, and Zucman data ... The average tax rate on the 0.1 percent highest-income Americans was 50.6 percent in the 1950s, compared to 39.8 percent today.
From 1979 onward: http://www.cbo.gov/sites/default/files/cbofiles/attachments/...
Highest effective tax rate, before Reagan's reforms, was 37% of the income of the top 1%