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In a personal letter from 1973, the right-wing billionaire urged the libertarian philosopher to collect Social Security and to use Medicare coverage when visiting the United States.
Letterhead on a letter from Charles Koch to Friedrich Hayek, August 10, 1973.
Charles Koch informs Friedrich Hayek that he would be eligible for Social Security payments and "medical coverage."
Charles Koch's signature.
The Nation provides the images above to demonstrate authenticity. Read the article Charles Koch to Friedrich Hayek: Use Social Security!