Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Industrial Production, by Industries (Without Seasonal Variation)," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "February 1941," Federal Reserve Bulletin (February 1941) : 71-72. https://fraser.stlouisfed.org/title/62/item/21034/toc/133082 , accessed on June 24, 2024.