Federal Reserve Bank of Dallas. "[Second Amendments to Treasury Department Circular No. 530, Ninth Revision, Treasury Department Circular No. 653, Seventh Revision, and Treasury Department Circular No. 905, Fourth Revision]," District Notices (Federal Reserve Bank of Dallas) (October 6, 1966). https://fraser.stlouisfed.org/title/5569/item/552328, accessed on August 24, 2024.