Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. Letter From Secretary, May 17, 1918, to Federal Reserve Banks, re Licenses for Exporting Mexican Paper Currency to Mexico, Number X-948, Volume 7, Page 542, 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/512035, accessed on August 7, 2024.