Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Freight-Car Loadings, by Classes," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1934," Federal Reserve Bulletin (May 1934) : 25-25. https://fraser.stlouisfed.org/title/62/item/20649/toc/123782 , accessed on April 23, 2024.