The Radio Detectives

Knots, Splices and Rope Work A Practical Treatise Giving Complete and Simple Directions for Making All the Most Useful and Ornamental Knots in Common Use, with Chapters on Splicing, Pointing, Seizing, Serving, etc.

The Radio Detectives in the Jungle

The Radio Detectives Under the Sea

The Book of the Sailboat

Deep Sea Hunters in the Frozen Seas

Marooned in the Forest

The Deep Sea Hunters

In the wake of the buccaneers

Through the crater's rim

The boys' book of buccaneers

A voice from the inner world

The bridge of light