David Koch Dies at Age 79 | Money
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David Koch, billionaire industrialist who influenced conservative politics, dies at 79 - The Washington Post
Ex-guard: Dying billionaire David Koch's wife mistreated him
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David Koch, billionaire industrialist who influenced conservative politics, dies at 79 - The Washington Post
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Koch, David Hamilton
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David H. Koch, industrialist who fueled right-wing movement, dies at 79
Celebrating David Koch's Life and Legacy – Gateway Gazette
