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 15, 1977," G.3 Capacity Utilization, Manufacturing, Mining, Utilities and Industrial Materials (1977-04-15) : 2-2. https://fraser.stlouisfed.org/title/51/item/56748/toc/451971 , accessed on April 23, 2024.