Incoming Resources
- Flight, consulting editor, Donald Lopez
- Reach for the skies, ballooning, birdmen, and blasting into space, Richard Branson
- Reach for the skies, ballooning, birdmen, and blasting into space, Richard Branson
- The International encyclopedia of aviation, general editor, David Mondey ; assistant compiler, Jane's all the world's aircraft ; foreword by Juan Trippe
- Invention and technology, [Tom Jackson]