David und Charles Koch investieren in „Time“-Verlag: In die Höhle des Löwen
David Koch and Charles Koch | TIME
David Koch: US-Milliardär im Alter von 79 Jahren gestorben - manager magazin
How Charles and David Koch will wield their power in the 2016 race.
Billionaire conservative icon David Koch dies at 79 - ABC News
The Next Koch Doesn't Like Politics - POLITICO Magazine
Charles Koch bereut seine Tea Party-Unterstützung
Who are the Koch brothers? | PBS NewsHour
David Koch Kids & Family: 5 Fast Facts You Need to Know | Heavy.com
KOCH Newsroom | Announcement from Charles Koch on David Koch's Retirement
Ex-guard: Dying billionaire David Koch's wife mistreated him - New York Daily News
Charles und David Koch: Unsichtbare Wahlkämpfer - Politik - SZ.de
KOCH Newsroom | Celebrating David Koch's life and legacy
What Is the Koch Brothers' Net Worth? See How They Spend Their Wealth
Inside Charles and David Koch's Business Empire | Fortune
The Koch Brothers' Covert Ops | The New Yorker
The Brothers Koch: Rich, Political And Playing To Win : NPR
Kochs to double election spending in 2016 | Financial Times
Charles G. Koch – Wikipedia
Charles and David Koch - TheXtraordinary
USA: Milliardäre Charles und David Koch helfen Republikanern vs. Obama - DER SPIEGEL
David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 - The New York Times
The Koch brothers vs. God | Salon.com
Samuel Ramey, Charles Koch and David Koch attend New York City... ニュース写真 - Getty Images
David Koch Net Worth 2021 - David Koch Has Died
David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 - The New York Times
