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 31, 1988," H.15 Selected Interest Rates (1988-05-31) : 1-1. https://fraser.stlouisfed.org/title/86/item/67669/toc/463854 , accessed on April 18, 2024.