Federal Reserve Bank of Dallas. "Holidays, Circular No. 81-137," District Notices (Federal Reserve Bank of Dallas) (July 8, 1981). https://fraser.stlouisfed.org/scribd/?item_id=541319&filepath=/files/docs/historical/frbdal/circulars/frbdallas_circ_19810708_no81-137.pdf&start_page=1, accessed on September 26, 2017.
Revised Schedule of Official Holidays and Business Hours of All Federal Reserve Banks and Branches for the Year 1981