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. "October 1952," Federal Reserve Bulletin (October 1952) : 62-62. https://fraser.stlouisfed.org/title/62/item/21214/toc/142606 , accessed on May 9, 2024.