Board of Governors of the Federal Reserve System (U.S.), 1935-. "Industry Groupings, Not Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "July 15, 1964," G.12.3 Industrial Production (1964-07-15) : 6-6. https://fraser.stlouisfed.org/title/55/item/59548/toc/486495 , accessed on April 19, 2024.