Book X Print 48: Release of United States hostagesYale University. Department of Manuscripts and Archives1958 JuneengspaThese images document the release of United States hostages taken and held by Raúl Castro's forces in June and July of 1958. Frame 13 appears to show two of the hostages as their rebel guard informs them of the helicopter's arrival and subsequent frame depicts their farewells with the rebels and departure.