Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. Copy of Letter From Asst. Secretary of Treasury, April 29, 1918, re Retirement of Silver Certificates, and Substitution, Therefor, of Federal Reserve Bank Notes of Appropriate Denominations, Number X-917, Volume 7, Page 511, 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/512015, accessed on May 20, 2026.