The verbal attacks on Stevenson on October 24 , 1963 were traced to plans organized by Walker and his devotees among the John Birch Society , according to the November issue of the magazine '' Texas Observer '' . One month later , the black-bordered advertisement and the " Wanted for Treason : JFK " handbills of November 22 , 1963 , appeared on the streets of Dallas . They were traced to Walker and his associate Robert Surrey by the Warren Commission . After President Kennedy 's assassination , Walker wrote and spoke publicly about his belief that there were two assassins at the " April Crime " - Oswald and another person that was never found
President Kennedy 's assassination
Assassination of John F. Kennedy
Edwin Walker