To the inventive genius—trade-school boy or mechanic—this story has special charm, perhaps, but to every reader its mystery and clever action are fascinating.

The Dreadnought Boys on Aero Service

Among the volunteers accepted for Aero Service are Ned and Herc. Their perilous adventures are not confined to the air, however, although they make daring and notable flights in the name of the Government; nor are they always able to fly beyond the reach of their old “enemies,” who are also airmen.

The Dreadnought Boys’ World Cruise

From San Francisco the boys start on their world cruise. At Hawaii, Japan, Egypt and Gibraltar they meet experiences unforeseen and eventful.

The Dreadnought Boys in Home Waters

Into mimic naval warfare creeps actual intrigue that complicates the defense of New York Harbor.

It would be hard work to find a boy—young or old—who is not keenly alive to the achievements of our great Navy. You can get a good conception of what Uncle Sam is doing by reading these marvelous stories.

Sent postpaid for 50 cents per volume, or the set of six for $2.50.

HURST & COMPANY, Publishers, NEW YORK