Board of Governors of the Federal Reserve System (U.S.), 1935-. "March 16, 1967," G.12.3 Industrial Production (1967-03-16). https://fraser.stlouisfed.org/title/55/item/494019, accessed on April 19, 2024.
Board of Governors of the Federal Reserve System (U.S.), 1935-. "March 16, 1967," G.12.3 Industrial Production (1967-03-16). https://fraser.stlouisfed.org/title/55/item/494019, accessed on April 19, 2024.