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. "April 1943," Federal Reserve Bulletin (April 1943) : 57-57. https://fraser.stlouisfed.org/title/62/item/21056/toc/270493 , accessed on April 17, 2024.