Within days of the killing of 13 unarmed civilians and the wounding of 14 others on Bloody Sunday, more than 500 eyewitness testimonies were recorded for presentation to the Widgery Tribunalbut only 15 were considered. The first edition of Eyewitness Bloody Sunday brought to light 100 witness statements that were officially ignored for more than two decades. This book had a phenomenal and far-reaching impact, profoundly weakening the official version of the events of January 30, 1972. In addition to giving a voice to the civilian demonstrators who witnessed the events of Bloody Sunday, it exposed facts supporting the hypothesis that snipers in the vicinity of the old Derry Walls might have shot dead three of the victims.