Tom Swift Omnibus #2: Tom Swift and His Submarine Boat, Tom Swift and His Electric Runabout, Tom Swift and His Wireless Message

Tom Swift Omnibus #2 contains a trio of stories: In the fourth of Victor Appleton's original Tom Swift novels, Tom and his father, Barton Swift, race to build a submersible for the chance at a government prize, but must face off agaist a rival firm in pursuit of sunken treasure. In the fifth of Victor Appleton's original Tom Swift novels, Tom and his father, Barton Swift, race their electric automobile across a 500-mile endurance course, and face challenges along the way. In the sixth of Victor Appleton's original Tom Swift novels, Tom crashes an electric airplane onto a deserted island. It's up to Tom to communicate with the outside world and rescue the stranded adventurers.