- America's war for humanity
- [Salesman's Sample] Life and Work of Theodore Roosevelt: Typical American, Patriot, Orator, Historian, Sportsman, Soldier, Statesman and President
- Flying Machines: Construction and Operation; a Practical Book Which Shows, in Illustrations, Working Plans and Text, how to Build and Navigate the Modern Airship
- Ignition, Timing and Valve Setting.
- The New Knowledge Library: Science, Invention, Discovery, Progress. Supplemented by a Series of Review Questions for Students - Primary Source Ed