Radio gives the imagination sight.. here’s a nice reflection and history on radio broadcasting.

Wikipedia article on Old-time Radio

Old-Time Radio (OTR) and the Golden Age of Radio refer to a period of radio programming in the United States lasting from the proliferation of radio broadcasting in the early 1920s until television’s replacement of radio as the primary home entertainment medium in the 1950s. During this period, when radio was dominant and filled with a variety of formats and genres, people regularly tuned in to their favorite radio programs. In fact, according to a 1947 C. E. Hooper survey, 82 out of 100 Americans… (read more)