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CIRCA 1950s - The Voice of America broadcasts democracy to the world in the 1950's.
CIRCA 1950 - The 1951 workings of a radio station.
1940s - Telephone switchboard operators in 1949.
NBC radio programs are broadcasted with the help of technicians, switchboards, studios, performers, players and transmission lines all across the United States of America in 1934. (1930s)
CIRCA 1950s - In a pushbutton train yard, freight trains are controlled by operators in centralized traffic control, in 1957.
1950s - Newsreel feature: Atomic Energy - Los Alamos
CIRCA 1940s - An operator restores the dialing key on a call to Chicago in 1949.

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1950s - The Voice of America broadcasts democracy to the world in the 1950s.

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