David Koch dies at 79. With brother, moved U.S. politics to right - Los Angeles Times
All About The Koch Brothers - Charles and David Koch - YouTube
David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 - The New York Times
What Is the Koch Brothers' Net Worth? See How They Spend Their Wealth
Who are the Koch brothers? - BBC News
Charles And David Koch Plan To Spend $20 Million To Promote Tax Overhaul | KMUW
What the Koch Brothers own — Quartz
David Koch Dies; Billionaire Industrialist Funded Conservative Causes : NPR
The Next Koch Doesn't Like Politics - POLITICO Magazine
David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 - The New York Times
Koch brothers under attack by leftwing film-maker | US politics | The Guardian
Why Hate the Koch Brothers? (Part 1) (Ep. 292) - Freakonomics Freakonomics
Why the Koch brothers' political machine is 'unrivalled in America' | CBC News
David Koch dies: Who are the Koch brothers?
Kochland” Examines the Koch Brothers' Early, Crucial Role in Climate-Change Denial | The New Yorker
KOCH Newsroom | Brothers yes, but Charles and David Koch are not "brainless robots"
David Koch dies: Who are the Koch brothers?
Charles Koch & David Koch | TIME
David Koch, billionaire conservative activist and philanthropist, dies at 79
David Koch - Wikipedia
Meet the Koch Brothers - Again - ABC News
How Charles and David Koch will wield their power in the 2016 race.
Inside Charles and David Koch's Business Empire | Fortune
One Koch Brother Forces the Other Out of the Family Business | The New Yorker
Charles and David Koch | Biographies, Politics, & Facts | Britannica
The NY Times' absurd Koch brothers conspiracy
KOCH Newsroom | Charles Koch on the passing of his brother, David Koch
Charles & David Koch: Run the Republican Party | Gentleman's Journal
