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. "January 1951," Federal Reserve Bulletin (January 1951) : 86-86. https://fraser.stlouisfed.org/title/62/item/21193/toc/57281 , accessed on April 24, 2024.