"CIA Support of Death Squads" (from Ralph McGehee's CIABASE)
 CIA Agents - Torturers, Assassins and Terrorists (R.McGehee)
Instruments of Statecraft: U.S. Guerrilla Warfare, Terrorism 1940-1990
The information below is from CIABASE files on Death Squads
Torture Manuals - School of Americas Link (posted by R. McGehee)
Torture and Assassination and Operation Phoenix (by Ralph McGehee)