Workers work at a farm in the United States. Threshing machine in operation at a farm. Workers leave the barn. Boy feeds pigs in sty. He lifts one of the pigs. Boy slides from the top of a hay stack.
A railroad train approaching from far in the distance, reaching camera position, and passing by as it moves on railway track in the United States. Low view of railway track looking into the distance. Train approaching in the distance.The large black locomotive engine coming into view and approaching at high speed, hauling train cars. The steam locomotive engine sending steam and smoke upwards as the train passes by. Passenger cars going by quickly, coupled to the train.
Views of Cornell University where mechanical engineer, Stanford Moss, conducted research into gas turbines as part of his doctoral thesis work in 1903. Dr. Moss later joined the staff of General Electric Company. During World War I Dr. Moss is called to Washington DC to discuss, with the National Advisory Committee on Aeronautics (NACA), development of a turbo supercharger for airplane engines. View of a biplane with turbo supercharger mounted on top of radial engine. Animated diagram illustrating workings of a turbo supercharger. Using a supercharged engine, the U.S. Army Air Services established an altitude record of 36 thousand feet. (The pilot, flying without supplemental oxygen, passes out and doesn't regain consciousness until the airplane has fallen about 30 thousand feet.)
The lumber industry in forest areas of the United States. Animated map shows the Northern Forest, Hardwood Forest, Southern Forest, Rocky Mountain Forest and the Pacific Forest. Snow covered roofs at a lumber camp. Workers come out for their daily work. Horse drawn carts on a snow covered surface.
The lumber industry in forest areas of the United States. Two men fell a tree with a saw. The tree falls on the ground. Logs are drawn to a convenient place with the help of horse drawn carts. A low loading sled makes it easy to load the logs. Group of men load these logs on flatcars. A train loaded with logs departs from a station.
The lumber industry in forest areas of the United States. Wooden logs are dragged and pulled with the help of a crane. The logs are moved by an aerial cable. The logs slung from axles of large two wheeled carts. These carts are hauled by horses. Workers in Michigan use a crane to load logs onto flatcars.