Liberty Broadcasting System ended in 1952.
Liberty Broadcasting System was created in 1948.
Liberty Broadcasting Network ended in 1988.
Amalgamated Broadcasting System ended in 1933.
Mutual Broadcasting System ended in 1999.
Liberty Broadcasting Network was created in 1986.
Amalgamated Broadcasting System was created in 1933.
Maritime Broadcasting System was created in 1969.
Akita Broadcasting System was created in 1953.
Liberia Broadcasting System was created in 1960.
Spanish Broadcasting System was created in 1983.
Educational Broadcasting System was created in 1990.
Yamanashi Broadcasting System was created in 1954.