"Tom Swift Among the Diamond Makers, or, the Secret of Phantom Mountain" by Victor Appleton is book number 7 in the original Tom Swift series.
Don Sturdy on the Desert of Mystery
Victor Appleton
bookDon Sturdy on the Ocean Bottom
Victor Appleton
bookDepth Perception
Victor Appleton
bookTom Swift and His Airline Express
Victor Appleton
bookThe Blurred Blogger
Victor Appleton
bookAugmented Reality
Victor Appleton
bookThe Spybot Invasion
Victor Appleton
bookThe Drone Pursuit: Tom Swift Inventors' Academy, Book 1
Victor Appleton
bookThe Sonic Breach
Victor Appleton
bookThe Virtual Vandal
Victor Appleton
bookRestricted Access: Tom Swift, Inventors' Academy
Victor Appleton
bookTom Swift and the Electronic Hydrolung
Victor Appleton
audiobook