Charles and David Koch | Biographies, Politics, & Facts | Britannica
Koch brothers' patriarch helped build Nazi oil refinery, new book alleges | Canada's National Observer: News & Analysis
Five Myths About the Koch Brothers — And Why It Matters To Set Them Straight – BillMoyers.com
KOCH Newsroom | Charles Koch on the passing of his brother, David Koch
Conservative Philanthropist David Koch Dead at 79 | Diverse: Issues In Higher Education
Charles & David Koch: Run the Republican Party | Gentleman's Journal
Charles Koch - Wikipedia
What Is the Koch Brothers' Net Worth? See How They Spend Their Wealth
Who are the Koch brothers? - BBC News
David Koch and Charles Koch | TIME
One Nation met with Koch Industries last year. These are the brothers behind it - ABC News
David Koch dies: Who are the Koch brothers?
Koch vs. Koch: The Brutal Battle That Tore Apart America's Most Powerful Family – Mother Jones
What Is the Koch Brothers' Net Worth? See How They Spend Their Wealth
Who are the Koch brothers? - BBC News
Twitter users - including Bette Midler - post cruel messages celebrating the death of David Koch | Daily Mail Online
Charles and David Koch: The billionaire brothers 'trying to buy America' | The Independent | The Independent
One Koch Brother Forces the Other Out of the Family Business | The New Yorker
David Koch - Wikipedia
Who are the Koch brothers? | PBS NewsHour
KOCH Newsroom | Brothers yes, but Charles and David Koch are not "brainless robots"
David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 - The New York Times
David Koch dies at 79. With brother, moved U.S. politics to right - Los Angeles Times
How Charles and David Koch will wield their power in the 2016 race.
