Review: Sons of Wichita by Daniel Schulman | Financial Times
David Koch - Wikipedia
Charles and David Koch: The men who tried to buy America | The Independent | The Independent
Who are the Koch brothers? - BBC News
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"
Budget for Charles and David Koch-backed network: almost $1 billion for 2016 | Daily Mail Online
Inside Charles and David Koch's Business Empire | Fortune
How Charles and David Koch will wield their power in the 2016 race.
Charles G. Koch – Wikipedia
David Koch and Charles Koch | TIME
Koch and Co.
R M GRAPH LEFT CHAE KOCH Redaktionelles Stockfoto – Stockbild | Shutterstock
Inside the Koch machine: The billionaire brothers who want to 'save' America | South China Morning Post
What do Charles and David Koch want? - Lawyers, Guns & Money
Who are the Koch brothers? - BBC News
Koch vs. Koch: The Brutal Battle That Tore Apart America's Most Powerful Family – Mother Jones
Twitter users - including Bette Midler - post cruel messages celebrating the death of David Koch | Daily Mail Online
Charles Koch & David Koch by Rand Paul | Time
Charles Koch bereut seine Tea Party-Unterstützung
What Is the Koch Brothers' Net Worth? See How They Spend Their Wealth
Is David Koch's widow, Julia Flesher Koch, now the richest woman in the world? | South China Morning Post
David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 - The New York Times
