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. "November 1947," Federal Reserve Bulletin (November 1947) : 76-76. https://fraser.stlouisfed.org/title/62/item/21155/toc/8052 , accessed on May 7, 2024.