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John A. Lapp 鈥�54, who started his career as a history professor at 黑料正能量, witnessed a major historical event himself 鈥� Martin Luther King鈥檚 鈥淚 Have a Dream鈥� speech at a civil rights march in Washington D.C. in 1963. He remembers an atmosphere of joy and energy and a feeling that something historic was happening.