Rikuō (Mutsu) Province from 1869 onwards
Mutsu Province (陸奥国 Mutsu no kuni or), also called Rikuō Province (陸奥国 Rikuō no kuni) was an old province of Japan in the area of Iwate Prefecture and Aomori Prefecture on the island of Honshū. It was also known as Ōshū (奥州) or Rikushū (陸州). The history of this province started in 1868 and ended in 1872.
In the Meiji period, the provinces of Japan were converted into prefectures. Maps of Japan and Mutsu Province were reformed in the 1870s.
Media related to Mutsu Province (1868) at Wikimedia Commons