Album of 1931 “District planning of the Veliky Ustyug, Kotlas and Lalsk regions of the Northern Territory (Kotlas Agro-Industrial and Forestry Plant)”: new sources on the history of the European North

The paper analyzes the historical source stored by the MSAI (Municipal State Archival Institution) “Veliky Ustyug Central Archive”, which has not been previously described in the scientific literature. The document is an album with photographs of maps, schematics and diagrams of indicators of socio-economic development plans for 1932-1937 of the “Kotlas Agro-Industrial and Forestry Plant”, which includes three administrative regions of the Northern Territory with centers in the towns of Kotlas, Veliky Ustyug and the village of Lalsk. The album was compiled in 1931 by a team of the Main Geodetic Directorate of the Supreme Economic Council of the USSR. The document is highly preserved and is of great interest in form and content within the framework of historical-demographic and historical-geographical studies as one of the regional planning documents on population growth and urbanization, development of industry, logging and transport networks, development of agricultural land, assessment of investments, electricity consumption, etc.