The article deals with the letters, memoranda and references in the funds of regional and local authorities of the CPSU as a source on the history of the camps of prisoners of war and internees of NKVD (Ministry of Internal Affairs) of the USSR. Based on the material of the funds of the State archives of the Kemerovo region, the movement of this documentation, its types, the nature of the information it contains and the role of regional and local authorities of the party in the regulation of camp work are under consideration in the article.