Oral sources bear several special and problematic characteristics. Paper deals with their main features. Oral sources offer data about historical events, phenomenon, and processes as well as narrator's personal experiences. Evaluations and interpretations of wider social and historical phenomena bear narrator's individuality and subjectivity. It is essential to place individual oral evidence in the broader context of past political, economical and structural circumstances. Time-lag between historical events and the recording of oral evidence must be taken into consideration.