Book IX Print 37: Cubans raising flag over Exxon oil refineryYale University. Department of Manuscripts and Archives1960 JuneengspaImages of the nationalized refinery of Exxon Oil, showing a group of Cubans as they raise the Cuban flag over the headquarters of the refinery (where normally a U.S. flag would have flown). See also Prints 28, 29, 31, 36, 38, 39, 40, 42, 43 and 44.