Board of Governors of the Federal Reserve System (U.S.), 1935-. "Selected Interest Rates," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "May 11, 1981," H.15 Selected Interest Rates (1981-05-11) : 1-1. https://fraser.stlouisfed.org/title/86/item/67029/toc/463081 , accessed on April 18, 2024.