Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. Letter From the Fiscal Agent re Expense of Main Line, Leased Wire System, April, 1939, Number R-463, Volume 50, Page 239, Mimeograph Letters and Statements of the Board. Board of Governors of the Federal Reserve System (U.S.), 1935-. https://fraser.stlouisfed.org/archival/4957/item/507308, accessed on September 20, 2024.