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June 30, 2015 -- William Francis "Willie" Sutton, Jr.
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July 1, 2015 -- James Smithson: Founder of the Smithsonian Institution
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July 2, 2015 -- The assassination of President James A. Garfield took place in Washington, D.C. on July 2, 1881.
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July 3, 2015 -- George M. Cohan