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. "March 1934," Federal Reserve Bulletin (March 1934) : 25-25. https://fraser.stlouisfed.org/title/62/item/20647/toc/383438 , accessed on May 11, 2024.