A reminder that comparing old tax rates with modern ones is very hard, since there was a huge amount of deductions available for the high income earners, and hardly anyone actually paid anywhere near the nominal 91%.
Huh? This makes no sense. If you made over 400k you were in the guest tax bracket
Yes, b you wouldn't pay 91% of your income but you would pay 91% of everything over 400k.
And there were fewer taxes and government income streams so single big taxes (like income tax) represented a larger share of an individual's overall tax burden.