Board of Governors of the Federal Reserve System (U.S.), 1935-. "July 16, 1968," G.12.3 Industrial Production (1968-07-16). https://fraser.stlouisfed.org/title/55/item/494035, accessed on May 3, 2024.
Board of Governors of the Federal Reserve System (U.S.), 1935-. "July 16, 1968," G.12.3 Industrial Production (1968-07-16). https://fraser.stlouisfed.org/title/55/item/494035, accessed on May 3, 2024.