It's called “Theater of the Mind”, “ Old Time Radio ” or “Radio Dramas” to name a few. If you have ever heard a radio drama you know what I am talking about.
Posts under ‘Old Time Radio Episodes’
The Land of Whatever: Old Time Radio: The Mysterious Traveler …
Old Time Radio : The Mysterious Traveler (1943). I have to be honest with you, pilgrims. I wasn't aware of The Mysterious Traveler radio show until just a few years ago
Old Time Radio Thursdays – #031: Destination Freedom (1948 …
The show ran from 1948 to 1950, and… well, rather than reinvent the wheel, as it were, here's information on the show from the great Times Past Old Times Radio website: Richard Durham created Destination Freedom, …