有声读物: Radio Boys with the Forest Rangers

Radio is an ideal boy’s hobby, but it's not limited to youth. It offers a wonderful scope for the unquenchable enthusiasm that accompanies the application of youthful endeavor, and it's a fact that the majority of the wonderful inventions and improvements that have been made in radio have been produced by young men.
The Radio Boys are school chums enraptured by the thrill and potential of wireless voice transmission in the early days of the 20th Century. These are adventures of American youth as captured in print by Mark Twain, Rudyard Kipling, Robert Louis Stevenson, Jules Verne and Franklin W. Dixon. (Summary by Tom Hirsch) - Summary by Tom Hirsch