David Koch dies at 79. With brother, moved U.S. politics to right - Los Angeles Times
Koch brothers - The Japan Times
Koch brothers under attack by leftwing film-maker | US politics | The Guardian
KOCH Newsroom | Charles Koch on the passing of his brother, David Koch
Inside Charles and David Koch's Business Empire | Fortune
Who are the Koch brothers? | PBS NewsHour
David Koch Steps Down From Company, Political Groups - l'Opinion
David Koch - Wikipedia
Charles & David Koch: Run the Republican Party | Gentleman's Journal
David Koch stepping down from business and political network
David Koch Dies; Billionaire Industrialist Funded Conservative Causes : NPR
Charles Koch & David Koch | TIME
Five Myths About the Koch Brothers — And Why It Matters To Set Them Straight – BillMoyers.com
Charles Koch - Wikipedia
Koch Brothers' David Koch Dies at 79 | PEOPLE.com
What Is the Koch Brothers' Net Worth? See How They Spend Their Wealth
KOCH Newsroom | Brothers yes, but Charles and David Koch are not "brainless robots"
Opinion: The truth about the Koch brothers' agenda | CNN
David Koch Biography, Age, Wife, Illness, Death, Theatre, & Net Worth
Koch brothers are watching you: And new documents reveal just how much they know | Salon.com
David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 - The New York Times
