David Koch, billionaire industrialist who influenced conservative politics, dies at 79 - The Washington Post
Billionaire Charles Koch Shares His Secret Plan To Pass On His Fortune And Influence
Koch Dark-Money Operative Is Trump's Liaison to Congress –
We Don't Talk About Leonard: The Man Behind the Right's Supreme Court Supermajority — ProPublica
Party Foul: Inside the Rise of Spies, Mercenaries, and Billionaire Moneymen
Billionaires' Powerful New Tool Has Ray Dalio, Kochs Joining Patagonia Founder - Bloomberg
What happens at Sun Valley, the secret gathering of unelected billionaire kings?, Hamilton Nolan
Koch Brothers Palm Springs Gathering Draws Right-Wing Billionaires
Billionaire Charles Koch 'horrified' by some Republicans he funded
The Koch Brothers Are Even Worse Than You Think - Truthdig
The Kochtopus: sprawling network keeps David Koch's legacy thriving, Koch brothers
Donald Trump Attacks Charles Koch Calling Him 'Very Stupid'