Board of Governors of the Federal Reserve System (U.S.), 1935-. "Footnotes," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "September 30, 1991," H.15 Selected Interest Rates (1991-09-30) : 2-2. https://fraser.stlouisfed.org/title/86/item/67597/toc/464253 , accessed on April 25, 2024.