To Fly! (1976)
The premier film for the Theatre of the National Air and Space Museum, Smithsonian Institution. A brief summary of the history of flight, from 19th century balloons through 21st century space probes, while simultaneously showing off the new Imax film medium. The evolution of flying technology is portrayed in parallel with the story of the westward exploration of America and the rural-to-cosmopolitan transformation of American society.