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-. "May 31, 1988," H.15 Selected Interest Rates (1988-05-31) : 2-2. https://fraser.stlouisfed.org/title/86/item/67669/toc/463853 , accessed on April 28, 2024.