Operation PBHistory was a covert operation carried out in Guatemala by the United States Central Intelligence Agency (CIA). It followed Operation PBSuccess, which led to the overthrow of Guatemalan President Jacobo Árbenz in June 1954 and ended the Guatemalan Revolution. PBHistory attempted to use documents left behind by Árbenz's government and by organizations related to the communist Guatemalan Party of Labor to demonstrate that the Guatemalan government had been under the influence of the Soviet Union, and to use those documents to obtain further intelligence that would be useful to US intelligence agencies. It was an effort to justify the overthrow of the elected Guatemalan government in response to the negative international reactions to PBSuccess. The CIA also hoped to improve its intelligence resources about communist parties in Latin America, a subject on which it had little information.
