Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industrial Production: Industry Subtotals and Individual Series," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "February 15, 1994," G.17 Industrial Production and Capacity Utilization (1994-02-15) : 12-15. https://fraser.stlouisfed.org/title/77/item/63624/toc/455463 , accessed on April 18, 2024.