Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Freight-Car Loadings, by Lines," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1927," Federal Reserve Bulletin (May 1927) : 25-25. https://fraser.stlouisfed.org/title/62/item/20665/toc/319081 , accessed on December 10, 2023.