David Koch - Wikipedia
Repealing the Frontiers of Ignorance: David Koch Billionaire Lifestyle and Homes Across America
The Koch Brothers Are Sitting on a Real Estate Empire Worth Hundreds of Millions - WSJ
David Koch 'buys New York townhouse on a whim for $40million and pays in CASH' | Daily Mail Online
NY's 'richest couple' David and Julia Koch spend $55m cash on New York mansion
David Koch's house in Palm Beach, FL (Google Maps)
David Koch's Widow Looks to Sell Manhattan Apartment for $60 Million or More - Mansion Global
Seat Of Power: An Intimate Look Inside David Koch's Office
2012 Forbes 400: David Koch is richest Palm Beacher
David Koch's Palm Beach Privacy Fence Deemed A No
The Koch Brothers Are Sitting on a Real Estate Empire Worth Hundreds of Millions - WSJ
David Koch's Real Estate in NYC, the Hamptons, Aspen, and Palm Beach
Upper West Side's David Koch Often Mistaken for Billionaire Namesake - Upper West Side & Morningside Heights - New York - DNAinfo
NY's 'richest couple' David and Julia Koch spend $55m cash on New York mansion
NYC's richest woman has turned into a hermit in the Hamptons
David Koch (television presenter) - Wikipedia
In Case You Missed It: Bill Koch - Variety
Take a Walk Down Meadow Lane, The Hamptons' Billionaires' Row – DIRT
David Koch's Many Homes
What's the Big Deal: David Koch estate sells Aspen homes for $23 million and $12 million to Lauder family | AspenTimes.com
Meet Bill Koch, the other Koch brother (w/video)
David Koch's former home on Sydney's upper north shore for sale
You're Invited...to a Koch Party! | Occupy.com
Ex-Wife of Billionaire Bill Koch Sells West Palm Beach Home
