Tula Oblast was created on 1937-09-26.
Volyn Oblast was created in 1939.
Novosibirsk Oblast was created in 1937.
Kirov Oblast was created in 1934.
Volgograd Oblast was created in 1937.
Astrakhan Oblast was created in 1943.
Magadan Oblast was created in 1953.
Voronezh Oblast was created in 1934.
Arkhangelsk Oblast was created in 1937.
Kursk Oblast was created in 1934.
Murmansk Oblast was created in 1938.
Tomsk Oblast was created in 1944.
Tyumen Oblast was created in 1944.