Board of Governors of the Federal Reserve System (U.S.), 1935-. "January 1, 1969 : Description and Sources of Data Plotted in the Weekly Series of Charts," H.13 Selected Interest and Exchange Rates, Weekly Series of Charts (January 1, 1969). https://fraser.stlouisfed.org/title/1077/item/45484, accessed on December 12, 2024.