Board of Governors of the Federal Reserve System (U.S.), 1935-. "Output and Capacity for Industrial Materials," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "June 17, 1987," G.3 Capacity Utilization, Manufacturing, Mining, Utilities and Industrial Materials (1987-06-17) : 4-4. https://fraser.stlouisfed.org/title/51/item/56868/toc/448385 , accessed on April 25, 2024.