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-6850, Volume 34, Page 393, 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/504366, accessed on March 10, 2026.