Ch. 1. Evolution of the two-surface flying machine -- ch. 2. Theory development and use -- ch. 3. Mechanical bird action -- ch. 4. Various forms of flying machines -- ch. 5. Constructing a gliding ...

There was a time when having your own plane was a pretty clear indicator that you were part of that upper crust of society. If it was a pricey and rare electric plane, then all the more. But those ...