Koch family (English Wikipedia)

"Koch Industries, Inc". Company Profile Report. Hoover's, Inc. 2010. Retrieved May 10, 2010. [W]hen he tried to market his invention, the major oil companies sued him for patent infringement. Koch eventually won the lawsuits (after 15 years in court), but the controversy made it tough [?!] to attract many US customers.

insidephilanthropy.com

Rojc, Phillip (July 27, 2016). "Rightward, Ho! Ten Top Funders Behind the Surging Libertarian Movement". Inside Philanthropy. Retrieved June 26, 2018.

Lewis, Charlse; Holmberg, Eric; Campbell, Alexia Fernandez; Beyoud, Lydia (July 1, 2013). "Koch millions spread influence through nonprofits, colleges". American University School of Communication. Archived from the original on August 12, 2018.

"Koch Family Foundations and Philanthropy". Koch Family Foundations. Archived from the original on June 23, 2013. Retrieved June 1, 2013.
"Koch Family Foundations and Philanthropy - Foundations". Koch Family Foundations. Archived from the original on August 11, 2014. Retrieved May 23, 2014.

"The Kochs vs. Cato". The New Yorker. March 1, 2012.
Mayer, Jane (August 30, 2010). "Covert Operations: The billionaire brothers who are waging a war against Obama". The New Yorker. Condé Nast Publications.
Mayer, Jane (August 30, 2010). "Covert Operations: The billionaire brothers who are waging a war against Obama". The New Yorker. Condé Nast Publications.
Mayer, Jane (June 30, 2013). "Koch Pledge Tied to Congressional Climate Inaction". The New Yorker. Retrieved February 15, 2020.
Mayer, Jane (August 13, 2019). ""Kochland" Examines the Koch Brothers' Early, Crucial Role in Climate-Change Denial". The New Yorker. Retrieved September 13, 2022.

Vogel, Kenneth P. (August 9, 2010), "Tea party's growing money problem", Politico, retrieved June 14, 2011

Beckel, Michael (August 13, 2013). "William Koch emerges from shadow of famous siblings". Center for Public Integrity. Retrieved December 17, 2022.

Goldenberg, Suzanne (February 21, 2015). "Work of prominent climate change denier was funded by energy industry". The Guardian. London. Retrieved February 15, 2020.
Vidal, John (March 30, 2010). "US oil company donated millions to climate sceptic groups, says Greenpeace". The Guardian. London. Retrieved February 15, 2020.

"Fred and Mary Koch Foundation". Fmkfoundation.org. Archived from the original on November 14, 2013. Retrieved May 23, 2014.
"Koch Family Foundations and Philanthropy". Koch Family Foundations. Archived from the original on June 23, 2013. Retrieved June 1, 2013.
"Koch Family Foundations and Philanthropy - Foundations". Koch Family Foundations. Archived from the original on August 11, 2014. Retrieved May 23, 2014.
Lewis, Charlse; Holmberg, Eric; Campbell, Alexia Fernandez; Beyoud, Lydia (July 1, 2013). "Koch millions spread influence through nonprofits, colleges". American University School of Communication. Archived from the original on August 12, 2018.

Wayne, Leslie (December 7, 1986). "Brothers at Odds". The New York Times. Sec. 6; Part 2, p. 100, col. 1. ISSN 0362-4331. He returned a fervent anti-Communist who would later become a founding member of the John Birch Society.