Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Factory Employment: Indexes by Industries," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "June 1934," Federal Reserve Bulletin (June 1934) : 17-28. https://fraser.stlouisfed.org/title/62/item/20650/toc/377376 , accessed on March 28, 2024.