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-. "September 19, 1977," G.3 Capacity Utilization, Manufacturing, Mining, Utilities and Industrial Materials (1977-09-19) : 2-2. https://fraser.stlouisfed.org/title/51/item/56751/toc/452245 , accessed on July 1, 2022.