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 1, 1989," H.15 Selected Interest Rates (1989-05-01) : 2-2. https://fraser.stlouisfed.org/title/86/item/67854/toc/463989 , accessed on April 25, 2024.