Radio mystery and adventure

the long version

"From the 1920s to the 1950s, radio was the entertainment source for millions. Two of the primary themes of radio serials were mysteries and adventure. This is a detailed analysis of the important programs in these genres - Jack Armstrong, The Green Hornet, Sergeant Preston, Tom Mix, and more. Each entry includes type of series, broadcast days, air dates, sponsors, network, cast and production credits, and a comprehensive essay. When, as often happened, the series landed in other media, that is examined as well."--BOOK JACKET.