Shimbun Akahata was created on 1928-02-01.
Yamaguchi Shimbun was created in 1946.
Yomiuri Shimbun was created in 1874.
Minato Shimbun was created in 1946.
Nishinippon Shimbun was created in 1877-03.
Chunichi Shimbun was created in 1886-03.
Hokkaido Shimbun was created on 1887-01-20.
Chugoku Shimbun was created on 1892-05-05.
Kyoto Shimbun was created on 1879-06-09.
Tokyo Shimbun was created on 1884-09-25.
Sanyo Shimbun was created on 1879-01-04.
Jōmō Shimbun was created on 1887-11-01.
Asahi Shimbun was created on 1879-01-25.