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. "June 1942," Federal Reserve Bulletin (June 1942) : 67-68. https://fraser.stlouisfed.org/title/62/item/21046/toc/279035 , accessed on April 25, 2024.