According to the Baylor Institute for Oral History, Oral history provides a fuller, more accurate picture of the past by augmenting the information provided by public records, statistical data, photographs, maps, letters, diaries, and other historical materials. Eyewitnesses to events contribute various viewpoints and perspectives that fill in the gaps in documented history, sometimes correcting or even contradicting the written record. Interviewers are able to ask questions left out of other records and to interview people whose stories have been untold or forgotten. At times, an interview may serve as the only source of information available about a certain place, event, or person.