Federal Reserve Bank of Dallas. "Iranian Assets Control, Circular No. 80-79," District Notices (Federal Reserve Bank of Dallas) (April 22, 1980). https://fraser.stlouisfed.org/content/?item_id=541007&filepath=/files/docs/historical/frbdal/circulars/frbdallas_circ_19800422_no80-079.pdf, accessed on July 19, 2018.
Iranian Assets Control Regulations, Amendments. Effective 4-7-80. Also Enclosing Forms TFR-615/616 Census of Blocked Iranian N Assets of Claims Against Iran.