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. "July 1944," Federal Reserve Bulletin (July 1944) : 86-86. https://fraser.stlouisfed.org/title/62/item/21115/toc/177831 , accessed on May 10, 2024.