On the transition to the Cold War:

Guatemala in 1954: reports on Arbenz's posthumous homecoming in 1995, and some National Security Archive declassified documents from the coup.

Time Magazine's coverage of the coup, and of Arbenz's exile several months later.

Wikipedia's article on Operation PBSuccess is thorough and relatively accurate. The connection between this and Operation Ajax (1953) in Iran is worth contemplating--especially given the common, anti-imperialist cause between Iran and many Latin American countries today.

ECLA (now ECLAC since the Caribbean has join in), founded 1947 and still going....