Federal Reserve Bank of Dallas. "Revised Supplement B to Bulletin 4, Circular No. 79-29," District Notices (Federal Reserve Bank of Dallas) (February 16, 1979). https://fraser.stlouisfed.org/scribd/?item_id=542622&filepath=/files/docs/historical/frbdal/circulars/frbdallas_circ_19790216_no79-029.pdf&start_page=1, accessed on September 23, 2017.
Bulletin 4 Revised Supplement B for 1979, Current Schedule of Base and Related Reserve Periods