My monthly e-newsletter, The Throwback, is filled with history stories that will make you say “Wait? What?” Click here to read this month’s edition, in which I discuss the early dominance of African-American jockeys at the Kentucky Derby, Conan O’Brien’s obsession with biographer Robert Caro, and the time Donald Trump foreshadowed his border wall payment plan by demanding his fellow United States Football League owners pay the salary for his star quarterback.

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