Pt. 1. Early legends, attempts, and concepts.
Pt. 2. 1799-1881: manned gliders, powered models.
Pt. 3. 1883-1897: successful gliding and the first powered, manned flights.
Pt. 4. 1898-1905: the first controlled, heavier-than-air flight.
Pt. 5. 1906-1908: the spread of powered flight.
Pt. 6. 1908-1914: the early great flights.