Northern Oblast
In 1929, several governorates were merged into Northern Krai. July 15, 1929 the uyezds were abolished, and Karpogorsky District, with the center in Karpogory, was established. In 1936, the Krai was transformed into Northern Oblast. In 1937, Northern Oblast was split into Arkhangelsk Oblast and Vologda Oblast. In 1959, Karpogorsky and Pinezhsky Districts merged into the greater Pinezhsky District with the center of Karpogory.