Federal Bureau of Investigation (FBI) agents investigate cases through scientific methods in the United States. A handwriting expert examines handwriting for the identification of criminals. Other men test clothing to identify criminals. The dust from the clothes is examined. A man examines the sample with the help of a microscope. A chemical test is conducted.
Federal Bureau of Investigation (FBI) agents investigate cases through scientific methods in the United States. Four knives used in a crime are placed on a table. Minute particles of zinc and copper on the knives are inspected. A man examines the sample. Men examine the guns used in a crime. A gun is fired and then examined. A man looks at the sample through a microscope. Other man seated nearby examines other sample.
Federal Bureau of Investigation (FBI) agents undergo their training in the United States. A field training for the agents. They fire rifles at target boards. The training continues in night. The agents fire rifles and hit the target boards at night. FBI Director John Edgar Hoover addresses the nation and talks about the goal of eradication of crime from the country.
A cable railway hauls gliders in Germany. A cable car moves on a cable railway. Men seated in the car. Other men standing near a glider. A man sits in the cockpit of the glider. The glider is hauled by the cable railway. The glider in flight overhead.
Works Progress Administration (WPA) projects in New York City during the Great Depression. Aerial view of New York City as a plane flies by and clouds part to show Manhattan island below. Buildings and skyscrapers of New York City as seen from river and harbor views, with some ships and tugboats seen. Trucks on roads of Governor's Island at tip of Manhattan. An older home seen under renovation and reconstruction. View of the Brooklyn Navy Yard with WPA workers busy building and improving new roads and shops and warehouses near the docks. A bulkhead construction project is shown at Sheepshead Bay in Brooklyn, to reclaim land from the waters of the Bay. The work includes construction of a new Boulevard and sanitary and sewer system improvements. View of the front entrance of the Beaux Arts style Alexander Hamilton U.S. Custom House on Bowling Green at the tip of Manhattan. Pedestrians and WPA workers are seen in front of the building. WPA laborers on an unidentified Manhattan street (with elevated railway running in background) are busy removing old street car rail lines from the streets, in sections, and loading them into truck beds to haul away. Large public swimming pool and bath house construction projects are shown, influenced by city planner and avid swimmer Robert Moses (scene possibly shows McCarren Park pool - note archway seen under construction). WPA workers are seen building the new East River Drive, including highways, walks, and flanking parks. Construction workers seen building the roadway, with the Williamsburg Bridge in the background. A model of the project is shown with the new drive from Grand Street to 14th Street. Camera pans down from the Empire State Building to show the roof of the New York Public Library teeming with WPA workers as they remove the old corroded copper roof and replace it with a new metal roof. View of busy Manhattan streets below the workers, including a street car passing by.
Works Progress Administration (WPA) projects in New York during the Great Depression. An Eastern Airlines DC-3 passenger airplane with painted words on side "The Great Silver Fleet" taxis on a runway at Floyd Bennett Airport field by Jamaica Bay in Brooklyn, New York City. Narrator describes WPA improvements to the airport. Plane parks atop a novel turntable and then is rotated to desired position. Rear hatch opens and crew member steps out. Trap door on ground near plane opens revealing a stairwell downward which debarking passengers then use to walk toward the main terminal. View of skyport landing and takeoff area on the East River and a pontoon-equipped small aircraft coming in for landing at one of these two skyports providing air taxi service from Manhattan Island. Narrator indicates that one skyport is located at 31st Street and another at Wall Street.