Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Factory Employment and Payrolls, by Industries (Without Seasonal Adjustment)," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "March 1938," Federal Reserve Bulletin (March 1938) : 49-50. https://fraser.stlouisfed.org/title/62/item/20999/toc/338158 , accessed on March 29, 2024.