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-. "September 15, 1989," G.3 Capacity Utilization, Manufacturing, Mining, Utilities and Industrial Materials (1989-09-15) : 4-4. https://fraser.stlouisfed.org/title/51/item/56882/toc/448481 , accessed on April 25, 2024.