Board of Governors of the Federal Reserve System (U.S.), 1935-. "Output and Capacity for Manufacturing and Industrial Materials," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "April 16, 1981," G.3 Capacity Utilization, Manufacturing, Mining, Utilities and Industrial Materials (1981-04-16) : 2-2. https://fraser.stlouisfed.org/title/51/item/56794/toc/447129 , accessed on March 29, 2024.