Budget for Charles and David Koch-backed network: almost $1 billion for 2016 | Daily Mail Online
Charles & David Koch: Run the Republican Party | Gentleman's Journal
Who are the Koch brothers? | PBS NewsHour
One Koch Brother Forces the Other Out of the Family Business | The New Yorker
Koch and Co.
Charles and David Koch: billionaire donors in the line of fire | Financial Times
What do Charles and David Koch want? - Lawyers, Guns & Money
What Is the Koch Brothers' Net Worth? See How They Spend Their Wealth
Before battling Obama, Koch siblings' spat was internal - Winnipeg Free Press
Charles Koch — CEO of Koch Industries (#381) – The Blog of Author Tim Ferriss
What Is the Koch Brothers' Net Worth? See How They Spend Their Wealth
Charles Koch bereut seine Tea Party-Unterstützung
Charles and David Koch - TheXtraordinary
David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 - The New York Times
Amerikanische Milliardäre: Charles und David Koch
Charles G. Koch – Wikipedia
David Koch Net Worth 2021 - David Koch Has Died
USA: Milliardäre Charles und David Koch helfen Republikanern vs. Obama - DER SPIEGEL
Charles Koch & David Koch | TIME
The Next Koch Doesn't Like Politics - POLITICO Magazine
Who are the Koch brothers? - BBC News
KOCH Newsroom | Charles Koch on the passing of his brother, David Koch
