Board of Governors of the Federal Reserve System (U.S.), 1935-. "Footnotes," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "April 9, 1990," H.15 Selected Interest Rates (1990-04-09) : 2-2. https://fraser.stlouisfed.org/title/86/item/67162/toc/462866 , accessed on May 7, 2024.