Federal Reserve Bank of Dallas. "[Revision of Fiscal Agency Operating Circular No. 2], Circular No. 73-81," District Notices (Federal Reserve Bank of Dallas) (April 13, 1973). https://fraser.stlouisfed.org/title/5569/item/545050, accessed on February 21, 2019.
Telegraphic Transfers of Marketable Treasury and Agency Securities in Bearer or Book-Entry Form Between Federal Reserve Banks, Effective 4-16-73