Federal Reserve Bank of Dallas. "Rates for Discounts and Advances, Circular No. 81-231," District Notices (Federal Reserve Bank of Dallas) (December 3, 1981). https://fraser.stlouisfed.org/scribd/?item_id=541410&filepath=/files/docs/historical/frbdal/circulars/frbdallas_circ_19811203_no81-231.pdf, accessed on December 10, 2017.
Bulletin 2, Supplement A. Basic Discount Rate and Rates for Other Extended Credit Reduced by 1 Percent Effective 12-4-81.