- Hooray for Pilots!
- Hooray for Pilots! (Enhanced Edition)
- Hot Air Balloons
- Hot Rods
- How a Real Locomotive Works
- How Aircraft Carriers Work
- How Airplanes Get from Here . . . to There!
- How Do Hang Gliders Work?
- How Do Hang Gliders Work? (Enhanced Edition)
- How Do Helicopters Work?
- How Do Helicopters Work? (Enhanced Edition)
- How Do Hot Air Balloons Work?
- How Do Hot Air Balloons Work? (Enhanced Edition)
- How Do Jets Work?
- How Do Jets Work? (Enhanced Edition)
- How Do Parachutes Work?
- How Do Parachutes Work? (Enhanced Edition)
- How Do Space Vehicles Work?
- How Do Space Vehicles Work? (Enhanced Edition)
- How Drones Work
- How Fighter Jets Work
- How Military Helicopters Work
- How Submarines Work
- How Tanks Work