《The Submarine Boys' Trial Trip》 - 免费有声读物

The torpedo submarine's inventor, Jack Farnum, is looking for investors to help him kick his new shipyard into high gear. He already has his crew set, with sixteen year old Jack Benson as the captain, and his friend Hal Hastings running the engines. But, there may be some changes to the crew of the Pollard on the horizon. - Summary by Ann Boulais