Federal Reserve Bank of Dallas. "Holidays, Circular No. 81-30," District Notices (Federal Reserve Bank of Dallas) (February 6, 1981). https://fraser.stlouisfed.org/scribd/?item_id=541211&filepath=/files/docs/historical/frbdal/circulars/frbdallas_circ_19810206_no81-030.pdf&start_page=1, accessed on October 23, 2017.
Revised Schedule of Official Holidays and Business Hours of All Federal Reserve Banks and Branches for the Year 1981