Outline map of Omsk Oblast, Russian Federation, and adjacent regions
Omsk-Oblast.png
Outline_Map_of_Tyumen_Oblast.svg
Outline_Map_of_Novosibirsk_Oblast.svg
Omsk-Oblast.png: СафроновАВ.Original uploader was СафроновАВ at ru.wikipedia

Outline_Map_of_Tyumen_Oblast.svg: Виктор В
Outline_Map_of_Novosibirsk_Oblast.svg: *Виктор В
derivative work: Odysseus1479 (talk)