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 6, 1991," H.15 Selected Interest Rates (1991-05-06) : 1-1. https://fraser.stlouisfed.org/title/86/item/67269/toc/464202 , accessed on April 24, 2024.