Professor with a cow at University of Maryland experimental dairy farm in College Park, Maryland. Calves eating. A cow is injected with small dose of radioactive isotope to trace efficiency of feed conversion into milk. A professor takes milk sample from the cow. The milk is analyzed in a laboratory. Various laboratory instruments and Professors working with them.
President Franklin D. Roosevelt receiving an honorary Doctor of Law degree from Washington College, located in Chestertown Maryland. View of campus of Washington College, President at stage, dons a cap and gown to receive the degree, a huge gathering at the college. Hiram Staunton Brown, Chairman of the Washington College Board, and Washigton College President Gilbert W. Mead also seen with President Franklin Roosevelt.
Emile Berliner and his son Henry Berliner, and other people gather around the helicopter. Henry Berliner in Berliner helicopter taking off in short flights and re-landing. This is one of the first machines which fly forward after rising vertically. Several views of test flying of the Berliner helicopter.
Berliner an early helicopter lands at Bolling fiield in Washington DC, United States. Pilot stands with the helicopter in the background. Men work on the helicopter. Helicopter's engine starts and it takes off. (Note: The Berliner helicopter that first made a controlled flight, in 1924, is in the Smithsonian's National Air and Space Museum collection and displayed at the College Park Aviation Museum in Maryland)
General Henry H. Arnold, Commander of the U.S. Army Air Forces, seated in front of world map, reports that since start of World War 2, the U.S. Air Force has gone from number 7, to number 1, in the world. Defense plant workers are shown walking near their place of work. A college football game shown in progress. Individual young men who left civilian life to became pilots, bombardiers, radio technicians, and gunners, in the Air Forces. A commercial DC-3 aircraft taxing to park at an airport. Shown are people who make the Air Forces possible, including many men and women workers at factories and manufacturing plants making aircraft and parts for the World War 2 effort: Steel workers, a woman working on a plane fuselage, actor James Stewart (in uniform), a welder at work, a typist, a machinist using a caliper, and an older couple at home, who forgoe driving their private car, shown covered in their garage. The flaming wreckage of U.S. aircraft at Hickam Field, on December 7, 1941. Large formation of German Heinkel He-111 bombers in flight. Formation of Japanese Mitsubishi G3M (Nell) bombers. U.S. P-40 pursuit planes taxiing out from parking places. Assembly line in U.S. aircraft manufacturing plant. U.S. Army Air Forces B-17 Flying Fortress planes on assembly lines. Workmen work on engines and aircraft fuselages. At the Douglas plant U.S. Army Air Forces B-26 Marauder bombers being assembled. Workmen inserting machine guns into a wing.
A rock festival in West Potomac Park during the 1971 May Day protests in Washington DC to protest the Vietnam War. Crowds of anti-war protesters belonging to different youth subcultures, such as college students, hippies, and high school students, camp and attend rock concert in West Potomac Park. A hotdog vendor selling Sabrett frankfurters to protesters in West Potomac Park. Various images of teenagers and protest participants attending a rock concert in West Potomac Park. Band playing onstage during a rock festival in West Potomac Park. African American man dances to rock music. A couple, lying down in an embrace. Teenager dancing. A toddler riding the back of his parent during the rock festival. Two teenagers embracing. A teenager smokes. Medics carry a drug overdose patient away from a D.C. Human Resources Drug Mobile for treatment. A police helicopter flying over West Potomac Park. Aerial view of the West Potomac Park filled with over 25, 000 rock festival and May Day protest participants. An image taken during the evening showing an aerial view of the 40, 000 participants gathered in the West Potomac Park. A police officer sits at his desk using a loupe magnifier to view photos taken from the West Potomac Park rock festival. Close view of a rock singer performing onstage.
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