Line of semi-finished BT-13's at Vultee Aircraft Plant in United States. Airplanes in construction. Men work on the semi-finished aircraft.
BT-13's on an airbase in United States. Other vehicles on the airbase. Men stand near the aircraft. Hangar and trees in the background. A BT-13 takes off. The aircraft in flight.
Line of BT-13's in United States. Civilians examine the aircraft. Pilot examines the aircraft. Hangar in the background. Trees in the background.
Semi-finished BT-13's inside the Vultee Aircraft Plant in United States. A welder at work on engine mount. Riveters at work. Line of BT-13's. Men work under wing of BT-13. Row of wings of BT-13's. Man works on tail wheel of BT-13.
Insects infest crops in various parts United States. Insects such as boll weevil and the corn borer. People work in a farm. Boll weevil attacks cotton. European crop borer destroys crop. Brown tail and gypsy moths are a menace to fruits, shade and forest trees. Wrecked forest trees. Products examined before shipment.
Insects infest crops in various parts of United States. Men inspect Christmas trees for wood whether they are free from gypsy moths. Wood logs at one side. Woods loaded into trucks. Another vehicle nearby. Man shows inspection certificate. The inspection certificate. A notice warns the automobile drivers and campers against the insects.
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