Wilbur Wright pilots a full-size glider down the steep slope of Big Kill Devil Hill in Kitty Hawk, North Carolina, on October 10, 1902. This model was the third iteration of the Wright brothers' early gliders, equipped with wings that would warp to steer, a rear vertical rudder, and a forward elevator. #

Start of a glide; Wilbur in motion at left holding one end of glider (rebuilt with single vertical rudder), Orville lying prone in machine, and Dan Tate at right, in Kitty Hawk, North Carolina, on October 10, 1902. #

The Wright Flyer I, built in 1903, front view. This machine was the Wright brothers' first powered aircraft. The airplane sported two 8 foot wooden propellers driven by a purpose-built 12 horsepower engine. #

First flight: 120 feet in 12 seconds, on December 17, 1903. This photograph shows man's first powered, controlled, sustained flight. Orville Wright at the controls of the machine, lying prone on the lower wing with hips in the cradle which operated the wing-warping mechanism. Wilbur Wright running alongside to balance the machine, has just released his hold on the forward upright of the right wing. The starting rail, the wing-rest, a coil box, and other items needed for flight preparation are visible behind the machine. Orville Wright preset the camera and had John T. Daniels squeeze the rubber bulb, tripping the shutter. #

The remodeled 1905 Wright machine, altered to allow the operator to assume a sitting position and to provide a seat for a passenger, on the launching track at Kill Devil Hills in 1908. #

Troops of the U.S. Army Signal Corps rush to the site of a crashed plane to recover the pilot Orville Wright and his passenger, army observer Lieutenant Thomas E. Selfridge, from the wreckage on September 17, 1908, in Fort Myer, Virginia. The plane crashed during a demonstration flight at a military installation, making Lt. Selfridge, who died from his injuries, the first fatality of a military airplane crash. Orville suffered a broken left leg and four broken ribs. #

Wilbur Wright makes a 33-minute-long flight during the Hudson-Fulton Celebration in New York in 1909. Wright started from Governors Island to fly up the Hudson River to Grant's Tomb and back, a feat witnessed by hundreds of thousands of New York residents. #

Orville Wright during proving flights for the U.S. Army at Fort Myer, Virginia, in July of 1909. The Wright brothers were able to sell their airplane to the Army's Aeronautical Division, U.S. Signal Corps. #