Tula Oblast was created on 1937-09-26.
Volyn Oblast was created in 1939.
Armenian Oblast was created in 1828.
Vinnytsia Oblast was created in 1932.
Kamchatka Oblast was created in 1932.
Kurgan Oblast was created in 1943.
Lipetsk Oblast was created in 1954.
Novgorod Oblast was created in 1944.
Chita Oblast was created in 1937.
Omsk Oblast was created in 1934.
Moscow Oblast was created in 1929.
Zaporizhia Oblast was created in 1939.
Tyumen Oblast was created in 1944.