Air pollution and city smog due to mobile sources in Kansas City, Missouri, United States. Aerial view of traffic on modern highway with overpasses. Heavy equipment at a construction site. A bus on highway. View from above of a locomotive emitting smoke. Aerial view of tug boats moving barges on river. A jet airliner taking off with large smoke trails from its four engines. A large diesel truck on the highway, giving off heavy exhaust. Vehicle traffic on major highway. Layers of smoke and pollution over the entire Kansas City area, seen from an airplane. General aerial views over Kansas City from an aircraft of wind carrying smoke away from the area, smog during a thermal inversion condition; smoke rising from open burning in a residential area; a grain elevator; a power plant. A blazing fire raising dense black smoke pollution at a junk yard.
Douglas Superliner aircraft in Santa Monica, California. Giant Douglas Superliner aircraft moves out from its hangar for the first time. The aircraft is built to span the continent in 10 hours at extremely high altitudes and speeds. Men work with the propellers of the aircraft. A large crowd of civilians gathered to watch the aircraft.
Gambling ship underway off the coast in Santa Monica,California. A gambling ship underway at sea. The Manager stacks coins for players and prepares for the Casino Roulette game. Passengers play the game. Waltzing mice are used in the new game of gambling.
Boy-girl roller derby in Los Angeles, California. Boy and girl 425-mile, 21-day roller derby race begins. The players skate on an oval track. Scenes of the derby race under way and several collisions along the way as skaters compete for position.
Gilmore Stock Car Race in Los Angeles,California. Spectators seated in stands. Drivers,pit crew and officials pose on a track. Officials gathered around a table. Group of men. Some in racing gear. 'Harry Nelson Ford' written on back of coveralls. Official talks with driver in a stock car. Racers receive flag and the Gilmore Stock Car Race begins. Cars race on a track. Car no.2 driver Pete de Paolo in Ford V-8. Car no.3 Wilber Shaw, car no.7 Chet Gardner in Ford V-8. Official beside the track as he waves a flag. Cars on the track. Official waves checkered flag at car no.8. Driver Stubby Stubblefield and co driver in Ford V-8 car wins the race.
Officers training at Fort Knox Armored Center in Kentucky,United States. View of the Headquarters of the Armored center. Officer John W. Leonard seated at desk in office. The armored school is divided into specialized sections which includes instructor training department,communication department and weapons department. Officers learn about principles of latest weapons at the weapons department. During training officers are demonstrated about functions of each part of the weapons using models. In the electrical division the students are given instructions in engine ignition and power supply. In the basic class officers learn about the practical application of tanks. They learn to move tanks on field. Officers attend an advanced class on staff and command problems. They learn about tactical planning and functions of armored units. Officers receive a series of extensive courses.
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