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/title/5569/item/545461, accessed on November 15, 2018.
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