Board of Governors of the Federal Reserve System (U.S.), 1935-. "Profit Taxes Payable, Seasonally Adjusted Annual Rates," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "February 8, 1977," Z.1 Financial Accounts of the United States (1977-02-08) : 53-53. https://fraser.stlouisfed.org/title/93/item/69135/toc/465720 , accessed on April 23, 2024.