During the first half of the 20th century radio technology was booming, albeit restricted by the vacuum tube technology of the time which made radios cumbersome in size and power needs.

In the observation car, which also has a radio, a speedometer has been installed ... New York Central's Twentieth Century Limited and Pennsylvania's Broadway Limited, were streamlined to the ...

The history and politics of the 20th Century provided inspiration for the diverse range of musical styles developed between 1900 and 1999, pioneered by composers ranging from Elgar and Britten, to ...