Board of Governors of the Federal Reserve System (U.S.), 1935-. "Subtotals and Individual Series, Not Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "September 16, 1966," G.12.3 Industrial Production (1966-09-16) : 6-8. https://fraser.stlouisfed.org/title/55/item/59581/toc/487756 , accessed on April 22, 2024.