+ You'll be lucky if you find any radio schedules prior to 1937 - except in very large newspapers.
+ Any radio articles or ads found prior 1937 in newspapers can be considered scarce.
+ Most radio news is found in the war years. It is obvious to me that radio was at it's most popular during that time.
+ By 1948, radio was moving over for television and by 1950, radio news really started to become scare in newspapers.
+ By 1952, even major radio programs found a hard time getting newspaper space. For example, try finding a free article on Gunsmoke or Dragnet sometime in Google News from that era.