Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Factory Employment, by Industries (Adjusted for Seasonal Variation)," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1941," Federal Reserve Bulletin (May 1941) : 67-68. https://fraser.stlouisfed.org/title/62/item/21037/toc/130698 , accessed on May 5, 2024.