Northern Oblast
Before 1936, the area occupied by Northern Oblast was part of Northern Krai, a vast administrative unit comprising the north of Russia. The 1936 Soviet Constitution abolished Northern Krai and divided its territory between the Komi Republic and the new Northern Oblast. Northern Oblast included 54 districts, three of which were in the Nenets Autonomous Okrug. In 1937, the Oblast was split into Arkhangelsk and Vologda Oblasts. In 1941, three of its districtsLalsky, Oparinsky and Podosinovskywere transferred from Arkhangelsk Oblast to Kirov Oblast. Pavinsky and Vokhomsky District became a part of Kostroma Oblast.