Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. Telegram From Asst. Secretary Bethea re Applicability of Section 4(e) of Regulation T in Light of Word "Additional" Preceding Word "Margin": Ruling No. 4 Interpreting Regulation T, Number X-8039, Volume 41, Page 200, 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/505634, accessed on August 15, 2026.