Title: Reality, Artist: Frank Walton
Title: Once They Were Eagles: The Men of the Black Sheep Squadron, Author: Frank Walton
Title: The Flying Machine Boys on Secret Service or The Capture in the Air, Author: Frank Walton
Title: The Flying Machine Boys in the Wilds or the Mystery of the Andes, Author: Frank Walton
Title: The Flying Machine Boys in the Wilds, Author: Frank Walton