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added Category:美國億萬富豪 using HotCat
*[https://www.guidestar.org/profile/13-3088563 guidestar-Frederick R Koch Foundation]
*[https://www.esquire.com/news-politics/news/a26734/luckiest-man-in-america/ esquire-Fred Koch: The Luckiest Man in America]
[[Category:美國億萬富豪]]