Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. Letter From Asst. Secretary Bethea re Code Words Covering New Issues of Treasury Bills, Number X-9871, Volume 46, Page 200, 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/506678, accessed on September 15, 2026.