Cullison, William E. "Trends in Federal Taxation Since 1950," in Federal Reserve Bank of Richmond. "May-June 1980, Vol. 66," Economic Quarterly (Federal Reserve Bank of Richmond) (May-June 1980) : 5-15. https://fraser.stlouisfed.org/title/960/item/477300/toc/501640 , accessed on April 18, 2024.