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. "January 1955," Federal Reserve Bulletin (January 1955) : 73-73. https://fraser.stlouisfed.org/title/62/item/21241/toc/72575 , accessed on April 25, 2024.