Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. Letter From Governor, Dec. 7, 1917, Enc. Ruling of Board re Depreciation Charges Which May Properly Be Made by Federal Reserve Banks, Number X-555, Volume 6, Page 3012, 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/510836, accessed on October 17, 2026.