Tom must recover a valuable capsule left on Earth on the ocean floor off Easter Island thousands of years ago by colonists from another planet.

Tom constructs a large, heavy brass-bound oak chest to hold his blueprints, formulae, and models until an underground vault can be built. But Tom is attacked an

A super submarine especially designed for deep-sea research and exploration encounters strange green bubbles that feed on manganese nodules and are capable of e

In 'Tom Swift and His Giant Telescope' by Victor Appleton, readers are taken on a thrilling adventure as young inventor Tom Swift unveils his latest creation -