*Dead Witnesses
In the first three years following the assassination, 13 material witnesses died of unnatural causes. Other suspicious deaths occurred during both the Garrison trial in the late '60s and the Congressional investigations of the mid '70s. In all, more than 40 witnesses have died mysteriously, many because they knew too much. these include, chronologically:
6/64: Guy Banister, apparent heart attack. His files were gone by the time authorities arrived. 9/64: C.D. Jackson, unknown causes. Life magazine publisher and long time CIA propagandist, he purchased and suppressed the Zapruder film. 1/65: Dorothy Kilgallen, drug overdose. The columnist had promised, after meeting with Jack Ruby, to break open the Kennedy case. 1/67: Jack Ruby, cancer, just before his appeal was to begin. He told family members he had been injected with cancer cells. 2/67: David Ferrie, unspecified "natural causes." Within hours, his Cuban exile friend, Eladio Del Valle, was shot through the heart and his head split open. 9/73: Thomas E. Davis III, electrocuted while stealing wire from a warehouse. 8/74: Clay Shaw, possible cancer. No autopsy performed. 6/75: Sam Giancana, shot once in the back of the head and six times in a circle around his mouth while under police protection. 7/75: James Hoffa, vanished on his way to meet Anthony Provenzano, a mob-connected teamster official. 7/76: Johnny Roselli, garrotted, stabbed, dismembered, and found floating in an oil drum off the coast of Florida after agreeing to testify to the Senate. 3/77: George de Mohrenschildt, gun shot wound through the mouth (ruled suicide) on the day he was called to arrange an interview with the HSCA.
*Source: Back of card