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. "October 1955," Federal Reserve Bulletin (October 1955) : 106-106. https://fraser.stlouisfed.org/title/62/item/21250/toc/374555 , accessed on April 19, 2024.