McKinley National Park in Alaska, United States. A car moves slowly over rough dirt road at rustic entrance gate of the McKinley Park in Alaska. Sign reads: "Gateway to McKinley National Park." Several cars and a tourist bus driving on an improved dirt road in the Park. Flowers growing at side of the road. Several log cabins and platform tent at a permanent site in the park.
A car parked at edge of rutted dirt road
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.
In October 1925, crowd gathered to watch the Pulitzer Trophy air races at Mitchel Field, Long Island, New York. VIPs arrive in various automobiles. Army Air Service Curtiss R3C-1 airplane is pushed onto the field. Air Service Chief, General Patrick , speaks with Lieutenant Cyrus Bettis as Lieutenant James Doolittle listens. A Navy crew works on their entry in the race, similar to the Army Air Service airplane. Navy Lieutenant Al Williams seen with a pipe upside down in his mouth. Lieutenant Bettis taxis out for takeoff in his airplane number 43. Then Navy Lt. Williams proceeds to take off in his aircraft, number 40. Lt. Bettis breaks ground and begins to fly the closed course, coming very close to the ground at times. He lands and climbs out of the cockpit, surrounded by spectators and officials who are convinced he has won, registering a speed of 249 miles per hour. Navy Lt. Williams lands shortly thereafter having averaged 242 miles per hour. He is greeted by several spectators, including a young woman.
Two weeks later, the U.S. Army was represented by Lieutenant Jimmy Doolittle, who flew the Curtis R3C-1, again, but this time fitted with floats, at the Schneider Cup Seaplane Race in Baltimore, Maryland. He shakes hands with a young woman, just before the race. The Navy also entered with a similar seaplane, shown being pushed into the water. The British entry, a Glouster-Mapier IIIA is seen (replacing the Supermarine-Napier S.4, that was damaged). The Italian Macci M.33 is seen on a dock with engine running. The float planes taxi out over the Chesapeake bay waters to takeoff position. Doolittle is the first to take off and to return, logging an average speed of 232 miles per hour. He is seen smiling after the race.
Using a beaker labeled crude oil, a man demonstrates that it yields petroleum products of 30% gasoline, 20% kerosene, and 42% lubrication oil and wax, and 5% coke. Animated diagram shows layers of rock and wells being drilled to various depths to tap oil reservoirs, avoiding water pockets. Another chart shows successive layers of natural gas, oil and salt water that may be encountered. On the surface, the boiler, mud pond, derrick, engine and pump are identified at drilling site. Well casing, drill and movement of drilling products are illustrated.
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.