Slate indicates that 200 million gallons of gasoline are used annually in the United States for power (in 1925). View of a busy city street, possibly New York City, circa 1925 with motor vehicle traffic, pedestrians and many tall buildings. Many early automobiles seen. A worker tests flash point of kerosene. Lighted candle in stuck block of paraffin (wax) showing wax or parrafin as a byproduct of petroleum. Slate indicates that petroleum provides motor fuel, common light, a lubricant for machinery and other important by-products.
Lieutenant Al Williams flying a Curtiss R3C1 racer aircraft for the 1925 Pulitzer Race at Mitchel Field in New York, United States. View of the navy R3C1. Lieutenant Al Williams and a civilian look at a map laid out on a wingtip of the aircraft. Lieutenant Cy Bettis and Lieutenant Williams standing behind the navy R3C1 aircraft. Lieutenant Williams removes his uniform coat and cap, then Lieutenant Bettis helps him put on a parachute and he climbs into the cockpit of the aircraft. Lieutenant Williams seated in the cockpit of the navy R3C1. He smiles at a camera and puts on goggles. A civilian comes up to side of the cockpit and the two men confer over a small notebook. The navy R3C1 with its engine running on a grass field. Several Curtiss mechanics push the tail of the aircraft around. An army officer, a civilian and an army enlisted man are standing nearby and are watching. The navy R3C1 taxis in front of a small hangar. The army R3C1 takes off. Two aircraft flying over Mitchel Field during the course of the 1925 Pulitzer Race. The navy R3C1 lands. Lt. Williams wearing a flight jacket and a navy service cap.
United States Army Air Force footage of a helicopter designed by Emile Berliner and Henry Berliner being tested in Washington D.C.,United States. This was one of the final Berliner models built, if not the final, constructed after the triplane model 5 variant that had been demonstrated in February of 1924. This variant had a biplane configuration and was lighter to improve the thrust to weight ratio. The lower wing generated lift from the rotor downwash due to a high angle of incidence and large camber. The helicopter repeatedly lifts off, hovers, does some forward movement, and then touches the ground.
United States aircraft land aboard the aircraft carrier Langley off the coast of California, United States. An aircraft marked 2F-10 after landing aboard the United States aircraft carrier Langley on May, 20th 1925. Aircraft piloted by Lieutenant Buse taxis along the flight deck.
United States aircraft land aboard the aircraft carrier Langley off the coast of California, United States. An aircraft piloted by Lieutenant H.J. Brow comes in for landing aboard the United States aircraft carrier Langley on March, 25th 1925. A man on the edge of the deck waves signal flags as the aircraft lands. Aircraft taxis along the flight deck.
United States aircraft lands aboard the U.S. aircraft carrier Langley off the coast of California, United States. A man on the edge of the deck waves signal flags as a United States aircraft piloted by Lieutenant Commander C.P. Mason comes in for landing. Aircraft lands aboard on 13th January, 1925. Aircraft taxis along the flight deck.