Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. Form of Transportation for Government Employees on Official Business, Exempting Same From Tax, Number X-571, Volume 6, Page 3055, 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/510847, accessed on April 18, 2026.