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-. "May 14, 1993," G.17 Industrial Production and Capacity Utilization (1993-05-14) : 12-15. https://fraser.stlouisfed.org/title/77/item/63615/toc/455209 , accessed on March 28, 2024.