Federal Reserve Bank of Dallas. "Interest Rates, Circular No. 81-140," District Notices (Federal Reserve Bank of Dallas) (July 13, 1981). https://fraser.stlouisfed.org/scribd/?item_id=541322&filepath=/files/docs/historical/frbdal/circulars/frbdallas_circ_19810713_no81-140.pdf&start_page=1, accessed on September 23, 2017.
Regulation Q Related. Current Interest Rate Ceilings. Telephone Numbers for Recorded Messages Regarding Money Market CDs, Treasury Bills and Federal Reserve Discount Rate.