A brief history of black jockeys in the United States - FORBES.com
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The Kentucky Derby’s Forgotten Black Jockeys - HISTORY.com
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Lewis, Oliver (1856-1924) - BlackPast.org
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The Forgotten History Of African-American Jockeys - NPR.org
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The forgotten godfathers of black American sport - CNN.com
African American Legacy - KENTUCKYDERBY.com