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 13, 1991," H.15 Selected Interest Rates (1991-05-13) : 1-1. https://fraser.stlouisfed.org/title/86/item/67264/toc/464209 , accessed on May 11, 2024.