Board of Governors of the Federal Reserve System (U.S.), 1935-. "April 6, 1967," G.14 U.S. Government Security Yields and Prices (1967-04-06). https://fraser.stlouisfed.org/title/1259/item/48889, accessed on April 25, 2024.
Board of Governors of the Federal Reserve System (U.S.), 1935-. "April 6, 1967," G.14 U.S. Government Security Yields and Prices (1967-04-06). https://fraser.stlouisfed.org/title/1259/item/48889, accessed on April 25, 2024.