Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. Letter From Secretary Morrill re Practice of Placing Coupons, Bonds, Scrip, etc., in Ordinary Mails Rather Than Registered Mails, Number B-1063, Volume 42, Page 590, 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/505984, accessed on August 11, 2026.