June 24, 1956
Mexican Federal Security Directorate (DFS), 'Investigation into a Conspiracy Against the Government of the Republic of Cuba'
Report documenting the arrest of Fidel Castro and fellow members of the "26th of July" group in Mexico. The report goes into great detail about the group's organization and training, and their plans for revolution in Cuba.
March 24, 1959
Resolution of the 42nd Meeting of the Czechoslovak Communist Party Politburo, Regarding Talks with Representatives of the People’s Socialist Party of Cuba
This presents evidence of Czechoslovak-Cuban relations forming in 1959, which includes the somewhat sensitive issue of Prague’s attempting to grasp the relationship and balance of power within Havana’s rulers between Fidel Castro’s “July 26th” movement and the traditional, pro-Moscow communist party, the People’s Socialist Party (PSP).