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 23, 1990," H.15 Selected Interest Rates (1990-04-23) : 2-2. https://fraser.stlouisfed.org/title/86/item/67160/toc/462874 , accessed on May 2, 2024.