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 15, 1989," G.3 Capacity Utilization, Manufacturing, Mining, Utilities and Industrial Materials (1989-06-15) : 4-4. https://fraser.stlouisfed.org/title/51/item/56879/toc/448469 , accessed on April 18, 2024.