The _Four hours in My Lai _archive, 1964-1992, relates to the massacre of hundreds of Vietnamese civilians on 16 Mar 1968, by members of C Company, 1st Battalion, 20th Infantry, 11the Light Infantry Brigade, US Army, at Tu Cung sub hamlet (known to US Army as My Lai (4) in the Pinkville region), My Lai hamlet, Son My village, Son Tinh district, Quang Ngai Province, Vietnam, and includes the documentary video, uncut interview transcripts, photographs, audio recordings, press cuttings, photocopied material from US archives, research notes, and the published book relating to the documentary and also titled Four hours in My Lai (Viking Penguin, New York, 1992). Eyewitnesses interviewed on film for the documentary include Vietnamese survivors of the massacre and well as members of C Company, and other US Army personnel. The photographs collection includes colour and black and white photographs taken on the day of the massacre by Army photographer Ron Haeberle, Frederick Widmer's photographs of his tour of Vietnam and photographs of individuals involved in the massacre and the investigations, some of which were published in the book. Photocopied documentation from US archives includes statements and evidence gathered during the US Army Inspector General's investigation, conducted by Col William V Wilson, Apr-Jun 1969, the US Army Criminal Investigation Division (USACID) investigation conducted by Chief Warrant Officer André Feher, Aug 1969-1970 , and the Peers Inquiry conducted by Lt Gen William R Peers, Nov 1969-Mar 1970, as well as the courts martial of Lt William Laws Calley, the only soldier who was ever convicted for the crime, and Capt Ernest M Medina and Col Oran K Henderson. Audio material in the collection includes recording of the radio communications between helicopters on 16 Mar 1968, news interview from 1969, as well as recordings of Bilton's telephone interview with various witnesses. News cuttings cover reports of the massacre in the US press and the subsequent investigations and trials, as well as articles on the post-1968 careers of individuals involved.