sentences:  During the 1960s Harvey Swack of Cleveland, Ohio, obtained the rights to the Sport Trainer design and all the factory drawings for it.Harvey then sold plans to homebuilders until 1990, when he sold off the plans business to Steen Aero Lab of Palm Bay, Florida.There have been a great number homebuilt Great Lakes Sport Trainers built over the years, which kept interest in this old biplane alive.