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. "September 1946," Federal Reserve Bulletin (September 1946) : 106-106. https://fraser.stlouisfed.org/title/62/item/21141/toc/7694 , accessed on March 29, 2024.