Federal Reserve Bank of Dallas. "Designated Nationals, Circular No. 85-154," District Notices (Federal Reserve Bank of Dallas) (December 27, 1985). https://fraser.stlouisfed.org/scribd/?item_id=545461&filepath=/files/docs/historical/frbdal/circulars/frbdallas_circ_19851227_no85-154.pdf&start_page=1, accessed on September 23, 2017.
Siboney International, S.A., Edifico Balmoral, 82 Via Argentina, Panama City, Panama; Siboney International, S.A., Venezuela, Address Unknown; and Carlos Alfonso Gonzalez, a/k/a Carlos Alfonse, Panama, Address Unknown