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 1943," Federal Reserve Bulletin (July 1943) : 78-78. https://fraser.stlouisfed.org/title/62/item/21059/toc/129901 , accessed on May 4, 2024.