Board of Governors of the Federal Reserve System (U.S.), 1935-. "Market Groupings, Not Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "January 15, 1965," G.12.3 Industrial Production (1965-01-15) : 4-4. https://fraser.stlouisfed.org/title/55/item/59773/toc/486985 , accessed on April 30, 2024.