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David Koch's donations helped positively shape New York City
David and Julia Koch buy $40M mansion on a whim
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David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 - The New York Times
David Koch Dies; Billionaire Industrialist Funded Conservative Causes : NPR
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David Koch: kindhearted, caring citizen, obligated to share wealth | National Catholic Reporter
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David Koch, Influential Conservative Billionaire, Dead At 79 | Vanity Fair
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David Koch's email & phone | Koch Industries's Vice President email
David Koch obituary | US news | The Guardian
David Koch Net Worth 2021 - David Koch Has Died
Seat Of Power: An Intimate Look Inside David Koch's Office
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