+"College Park Maryland USA" +1922 stock footage and images

American inventor Emile Berliner and his son Henry Berliner testing the Berliner helicopter at College Park.

Emile Berliner and his son Henry Berliner, and other people gather around the helicopter. Henry Berliner in Berliner helicopter taking off in short flights and re-landing. This is one of the first machines which fly forward after rising vertically. Several views of test flying of the Berliner helicopter.