Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Revenue, 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. "December 1941," Federal Reserve Bulletin (December 1941) : 65-65. https://fraser.stlouisfed.org/title/62/item/21040/toc/294639 , accessed on April 23, 2024.