Federal Reserve Bank of Dallas. "Amendments to Regulations G, T, and U (Suspension of Limitation of "Same-Day Substitution" Rule Extended Until September 30, 1975), Circular No. 75-63," District Notices (Federal Reserve Bank of Dallas) (May 12, 1975). https://fraser.stlouisfed.org/title/5569/item/541950, accessed on October 3, 2024.