Federal Reserve Bank of Dallas. "Changes to Regulations D, M, and Q, Circular No. 73-127," District Notices (Federal Reserve Bank of Dallas) (May 24, 1973). https://fraser.stlouisfed.org/title/5569/item/545093, accessed on August 21, 2018.
Changes in Supplement to Regulation D and Amendment to Regulation M, Effective 6-21-73, and Supplement to Regulation Q, Effective 5-16-73