How the Koch brothers fundamentally changed modern politics - CNN
- How the Koch brothers fundamentally changed modern politics CNN
- David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 The New York Times
- Conservative donor and philanthropist David Koch dead at 79 CBS News
- Billionaire conservative philanthropist David Koch dies at 79 | TheHill The Hill
- Billionaire industrialist and conservative donor David Koch dies at age 79 Reuters
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