Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Revenues, Expenses, and Income of Class I Railroads," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "July 1949," Federal Reserve Bulletin (July 1949) : 84-84. https://fraser.stlouisfed.org/title/62/item/21175/toc/359857 , accessed on May 10, 2024.