Board of Governors of the Federal Reserve System (U.S.), 1935-. "Selected Interest Rates (Weeks Ending Wednesdays)," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "September 21, 1987," H.15 Selected Interest Rates (1987-09-21) : 2-2. https://fraser.stlouisfed.org/title/86/item/67543/toc/463764 , accessed on April 16, 2024.