What's the Big Deal: David Koch estate sells Aspen homes for $23 million and $12 million to Lauder family | AspenTimes.com
Take a Look at Bill Koch's $100 Million Aspen Compound - Mountain Living
Billionaire Koch Brother Lists Aspen Mansion For $90 Million | Business Insider India
Calvin A. and Alta Koch Campbell House - Wikipedia
Meet Bill Koch, the other Koch brother (w/video)
Bill Koch's House In Cape Cod Is Listed For $15 Million After He Purchased Rachel 'Bunny' Mellon's Nearby Estate (PHOTOS) | HuffPost Life
How to Live Like a Koch Brother for Only $80 Million | Vanity Fair
Billionaire Charles Koch Buys $5.25 Million Property in LA - Haute Residence by Haute Living
Bill Koch's House In Cape Cod Is Listed For $15 Million After He Purchased Rachel 'Bunny' Mellon's Nearby Estate (PHOTOS) | HuffPost Life
Inside Dallas Designer Nicole Musselman's Historic Bungalow Turned Sunny Boutique in Uptown
Carl Koch (architect) - Wikipedia
Charles Koch says his mission to change America can, and will increasingly, have roots in Wichita - Wichita Business Journal
David Koch's Many Homes
Take a Look at Bill Koch's $100 Million Aspen Compound - Mountain Living
NYC's richest woman has turned into a hermit in the Hamptons
Ex-Wife of Billionaire Bill Koch Sells West Palm Beach Home
Bill Koch's House In Cape Cod Is Listed For $15 Million After He Purchased Rachel 'Bunny' Mellon's Nearby Estate (PHOTOS) | HuffPost Life
Charles Koch's House in Wichita, KS (#2) - Virtual Globetrotting
David Koch's Real Estate in NYC, the Hamptons, Aspen, and Palm Beach
Koch Mansion Palm Beach, Fl - Mansion of one of the billionaire Koch brothers | Mega mansions, Mansions, House exterior
David Koch's Real Estate in NYC, the Hamptons, Aspen, and Palm Beach
Bill Koch's House (Former) in Palm Beach, FL (Google Maps)
