Stumbled onto this fellow this week:
Article in the St. Augustine Herald: Flapping Flier Flew Here
General note: Ornithopter: wing flapping, foot-propelled flying machine made by George R. White. Trial flights were conducted in St. Augustine. The ornithopter weighed 118 pounds, was 8 feet in length, and had a wing span of 29.5 feet. The frame was made of chrome molydernum covered with a non-inflammable transparent celluloid fabric. It crashed on test flight, but was later improved.
Text above copied from a photograph of the ‘White Eagle’.