Hal Bryan
09-06-2011, 10:32 AM
Anyone ever heard of this?
464 (http://retromechanix.com/articles/aerospace/rotary-wing/granville-racing-gyroplane-1935/)
http://retromechanix.com/articles/aerospace/rotary-wing/granville-racing-gyroplane-1935/
464 (http://retromechanix.com/articles/aerospace/rotary-wing/granville-racing-gyroplane-1935/)
http://retromechanix.com/articles/aerospace/rotary-wing/granville-racing-gyroplane-1935/