Liberty Broadcasting System ended in 1952.
Liberty Broadcasting System was created in 1948.
Liberty Broadcasting Network ended in 1988.
Mutual Broadcasting System ended in 1999.
Amalgamated Broadcasting System ended in 1933.
Liberty Broadcasting Network was created in 1986.
Maritime Broadcasting System was created in 1969.
Amalgamated Broadcasting System was created in 1933.
Seoul Broadcasting System was created in 1990.
Broadcasting System of San-in was created in 1954.
Shizuoka Broadcasting System was created in 1952.
Turner Broadcasting System was created in 1979.
Akita Broadcasting System was created in 1953.