A fascinating tale of exploration and adventure in the Valley of Kings
in Egypt.

DON STURDY ACROSS THE NORTH POLE;

A great polar blizzard nearly wrecks the airship of the explorers.

DON STURDY IN THE LAND OF VOLCANOES;

An absorbing tale of adventures among the volcanoes of Alaska.

DON STURDY IN THE PORT OF LOST SHIPS;

This story is just full of exciting and fearful experiences on the sea.

DON STURDY AMONG THE GORILLAS;

A thrilling story of adventure in darkest Africa. Don is carried over
a mighty waterfall into the heart of gorilla land.

GROSSET & DUNLAP, Publishers, NEW YORK

THE RADIO BOYS SERIES

(Trademark Registered)

By ALLEN CHAPMAN

Author of the "Railroad Series," Etc.

Individual Colored Wrappers. Illustrated. Every Volume Complete in
Itself.

A new series for boys giving full details of radio work, both in
sending and receiving--telling how small and large amateur sets can be
made and operated, and how some boys got a lot of fun and adventure out
of what they did. Each volume from first to last is so thoroughly
fascinating, so strictly up-to-date and accurate, we feel sure all lads
will peruse them with great delight.

Each volume has a Foreword by Jack Binns, the well-known radio expert.

THE RADIO BOYS' FIRST WIRELESS
THE RADIO BOYS AT OCEAN POINT
THE RADIO BOYS AT THE SENDING STATION
THE RADIO BOYS AT MOUNTAIN PASS
THE RADIO BOYS TRAILING A VOICE
THE RADIO BOYS WITH THE FOREST RANGERS
THE RADIO BOYS WITH THE ICEBERG PATROL
THE RADIO BOYS WITH THE FLOOD FIGHTERS
THE RADIO BOYS ON SIGNAL ISLAND
THE RADIO BOYS IN GOLD VALLEY

GROSSET & DUNLAP, Publishers, NEW YORK

THE RAILROAD SERIES

By ALLEN CHAPMAN

Author of the "Radio Boys," Etc.

Uniform Style of Binding. Illustrated. Every Volume Complete in
Itself.

In this line of books there is revealed the whole workings of a great
American railroad system. There are adventures in abundance--railroad
wrecks, dashes through forest fires, the pursuit of a "wildcat"
locomotive, the disappearance of a pay car with a large sum of money on
board--but there is much more than this--the intense rivalry among
railroads and railroad men, the working out of running schedules, the
getting through "on time" in spite of all obstacles, and the
manipulation of railroad securities by evil men who wish to rule or
ruin.

RALPH OF THE ROUND HOUSE; Or, Bound to Become a Railroad Man.

RALPH IN THE SWITCH T