George A. Spratt

The younger Spratt studied medicine, attending Bucknell University and Medico-Chirurgical College, but may never have qualified as a physician.

He corresponded with aviation pioneer Octave Chanute and spent three weeks at Kitty Hawk, North Carolina, in the summer of 1901 assisting the Wright brothers in their aeronautical experiments.

Spratt continued to experiment and construct gliders, with mixed success, in an attempt to produce airplanes that remained perfectly stable in the air without intervention by the pilot.

Located by the road outside the Spratt Farm in West Brandywine Township, Chester County, Pennsylvania, the marker states that his "research was instrumental in the Wright brothers’ first flight.

His innovative use of a wind tunnel led to greater understanding of the effect of lift, drag, and the center of pressure on a curved wing.”[7]