"A series of stories of two American boy aviators in the great European war zone."--Book jacket.

The Scouts, Henri Trouville and Billy Barry, use their flying skills to fight crime around the world during World War I.

The Scouts, Henri Trouville and Billy Barry, use their flying skills to fight the enemy around the world during World War I.

The scouts, Henri Trouville and Billy Barry, use their flying skills to fight the enemy around the world during World War I.