Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. Letter From Secretary Morrill re Pledging of Eligible Paper with Federal Reserve Agent May Be Discontinued Where Gold Certificates as Collateral Are in Excess of Outstanding Notes, Number S-168, Volume 51, Page 250, 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/507460, accessed on March 8, 2026.