Charles Koch & David Koch | TIME
David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 - The New York Times
David H. Koch – Wikipedia
Twitter users - including Bette Midler - post cruel messages celebrating the death of David Koch | Daily Mail Online
The Next Koch Doesn't Like Politics - POLITICO Magazine
Trump tariffs could trigger U.S. recession, billionaire Charles Koch tells GOP ranks | The Japan Times
KOCH Newsroom | Brothers yes, but Charles and David Koch are not "brainless robots"
KOCH Newsroom | Announcement from Charles Koch on David Koch's Retirement
Koch brothers' patriarch helped build Nazi oil refinery, new book alleges | Canada's National Observer: News & Analysis
Charles and David Koch | Biographies, Politics, & Facts | Britannica
Who are the Koch brothers? - BBC News
Budget for Charles and David Koch-backed network: almost $1 billion for 2016 | Daily Mail Online
Charles and David Koch: billionaire donors in the line of fire | Financial Times
Before battling Obama, Koch siblings' spat was internal - Winnipeg Free Press
Charles and David Koch - ABC News (Australian Broadcasting Corporation)
Who are the Koch brothers? | PBS NewsHour
Charles and David Koch: The billionaire brothers 'trying to buy America' | The Independent | The Independent
How Charles and David Koch Plan to Remake the Republican Party
How Charles and David Koch will wield their power in the 2016 race.
Samuel Ramey, Charles Koch and David Koch attend New York City... ニュース写真 - Getty Images
What Is the Koch Brothers' Net Worth? See How They Spend Their Wealth
David Koch and Charles Koch | TIME
Inside Charles and David Koch's Business Empire | Fortune
