A man poses looking at the Chittenden bridge crossing the Yellowstone River, in 1917. (Note: The bridge, a few miles south of Canyon Junction, was built in 1903 under the supervision of Hiram Martin Chittenden, the Seattle district engineer for the Army Corps of Engineers, and originally referred to simply as the Melan arch bridge. It was later renamed in Chittenden's honor. It was replaced in 1962 with the Chittenden Memorial bridge.)
Important buildings in Richmond, Virginia. Exteriors of the Governor's Mansion (Capitol Sq, Richmond, VA 23219, United States) and the State Library on Capitol Square. Exteriors of the White House of the Confederacy (1201 E Clay St, Richmond, VA 23219, United States). A downtown street as rain pours down. People get in a car on the street. Exteriors of the Virginia State Capitol (1000 Bank St, Richmond, VA 23218, United States). Exteriors of the Old City Hall (Old City Hall, 1001 E Broad St, Richmond, VA 23219, USA) in Richmond, Virginia.
Evolution of United States Air Force uniforms in the United States. A captain in the 1917 uniform walks towards a French Nieuport fighter aircraft. He inspects the propellers and the engine of the aircraft. The captain climbs into the cockpit and adjusts his eye gear. The aircraft taxis on a field.
Evolution of United States Air Force uniforms in the United States. A captain in a 1917 pilot's uniform walks up to a French Nieuport fighter aircraft. He wears his flying jacket, a scarf and a helmet.
Evolution of United States Air Force uniforms in the United States. A captain wearing a 1917 pilot uniform checks the propellers of a French Nieuport fighter aircraft. He does a preflight checking of the aircraft. He takes out a jacket from the aircraft.
Experiments with chlorine gas for influenza immunizations in United States. A World War I tank sprays gas in a field. View of American soldiers during 1917 to 1918 period of World War I, in a trench, wearing gas masks, and firing rifles at enemy positions. Post war tests on use of Chlorine gas to control the flu (emerging from 1918 Spanish Flu epidemic), inspired by low rate of influenza among United States soldiers exposed to chlorine gas during the war. Man enters a chlorine chamber at the Chemical Warfare Service. A chart on the wall showing results on symptoms after exposure in chlorine chamber. A woman in 1920s hat carrying a tissue is treated with chlorine gas. A testing apparatus on a table. Group of patients sit together in a chlorine chamber being exposed to the chlorine gas. A business man in a suit receives a portable chlorine gas treatment in his office as he is too busy to visit the chlorine chamber.
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