Charles and David Koch - TheXtraordinary
David Koch is leaving Koch Industries, stepping down from Americans for Prosperity – The Denver Post
Repealing the Frontiers of Ignorance: Koch Industries Dividend Analysis: How Much Do Charles and David Koch Earn a Year?
What Is the Koch Brothers' Net Worth? See How They Spend Their Wealth
KOCH Newsroom | Announcement from Charles Koch on David Koch's Retirement
KOCH Newsroom | Brothers yes, but Charles and David Koch are not "brainless robots"
Charles and David Koch | Biographies, Politics, & Facts | Britannica
Koch and Co.
David Koch - Wikipedia
The Koch brothers vs. God | Salon.com
Inside Charles and David Koch's Business Empire | Fortune
David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 - The New York Times
Five Myths About the Koch Brothers — And Why It Matters To Set Them Straight – BillMoyers.com
Who are the Koch brothers? - BBC News
KOCH Newsroom | Charles Koch on the passing of his brother, David Koch
The Next Koch Doesn't Like Politics - POLITICO Magazine
Who are the Koch brothers? - BBC News
David Koch and Charles Koch | TIME
Seat Of Power: An Intimate Look Inside David Koch's Office
David Koch Dead: Billionaire and Conservative Activist Died at Age 79 - Rolling Stone
Twitter users - including Bette Midler - post cruel messages celebrating the death of David Koch | Daily Mail Online
Charles Koch teams with black colleges on education and criminal justice research - The Washington Post
One Koch Brother Forces the Other Out of the Family Business | The New Yorker
