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Elmer James Denevan was born on February 8, 1898 in Kingsbury County, South Dakota United States, and died at age 77 years old circa February 1, 1976 in Rapid City, Pennington County. Family, friend, or fan, this family history biography is for you to remember Elmer James Denevan.

Rosann Spencer Denevan was born on May 10, 1900 in Kingsbury County, South Dakota United States, and died at age 90 years old circa August 22, 1990 in Rapid City, Pennington County. Family, friend, or fan, this family history biography is for you to remember Rosann Spencer Denevan.

William Lendrum Mitchell (December 29, 1879 – February 19, 1936) was a United States Army general who is regarded as the father of the United States Air Force. Mitchell served in France during World War I and, by the conflict's end, commanded all American air combat units in that country. After the war, he was appointed deputy director of the Air Service and began advocating increased investment in air power, believing that this would prove vital in future wars. He argued particularly for the ability of bombers to sink battleships and organized a series of bombing runs against stationary ships designed to test the idea. He antagonized many administrative leaders of the Army with his arguments and criticism and, in 1925, was returned from appointment as a brigadier general to his permanent rank of colonel due to his insubordination. Later that year, he was court-martialed for insubordination after accusing Army and Navy leaders of an "almost treasonable administration of the national defense"[3] for investing in battleships instead of aircraft carriers. He resigned from the service shortly afterward. Mitchell received many honors following his death, including a commission by President Franklin D. Roosevelt as a major general. He is also the first person for whom an American military aircraft design, the North American B-25 Mitchell, is named.

Charles William Mitchell was born on October 18, 1860. Family, friend, or fan, this family history biography is for you to remember Charles William Mitchell.