Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. Letter From Asst. Secretary Noell re Code Words to Cover Telegraphic Transactions in Treasury Bills, Number X-6889, Volume 34, Page 651, 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/504395, accessed on March 11, 2026.