This Week in History: 8/23/15

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PHOTO: WGN Radio’s Dave Plier. Courtesy of Jim Roche

Dave Plier and Dave Schwann talk This Week in History’ including the invention of the potato chip, the Chicago Cubs win their earliest pennant ever in 1918, Martin Luther King delivers his ‘I Have a Dream’ speech, ‘Mary Poppins’ debuts, The Beatles spend an evening with Elvis and more!

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