Stringfellow and Henson's Aerial Steam Carriage.

Credit - Wright State University

Stringfellow's 1868 triplane model.

Credit - Wright State University

Stringfellow exhibited a model of his triplane.

Credit - Wright State University

LeBris' "Albatross" Glider.

Credit - Gary Bradshaw; "To Fly Is Everything"

Du Temple's drawing for tractor-driven monoplane

Credit - Wright State University

Du Temple's monoplane.

Credit - Wright State University

Struve and Telescheff 1864 ornithopter.

Credit - Gary Bradshaw; "To Fly Is Everything"

First photo of a fixed-wing aircraft.

Credit - Wright State University