Board of Governors of the Federal Reserve System (U.S.), 1935-. "February 14, 1969," G.12.3 Industrial Production (1969-02-14). https://fraser.stlouisfed.org/title/55/item/494040, accessed on April 23, 2024.
Board of Governors of the Federal Reserve System (U.S.), 1935-. "February 14, 1969," G.12.3 Industrial Production (1969-02-14). https://fraser.stlouisfed.org/title/55/item/494040, accessed on April 23, 2024.