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Not that long ago, air pollution from burning coal made the Windy City more like the Smoggy City. Geoffrey Baer tells us how Chicago cleaned up its act, and shares other stories about Chicago history in this encore edition of Ask Geoffrey.

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Geoffrey Baer tracks down answers for three questions about Chicago's bygone streetcar heyday in this encore edition of Ask Geoffrey.

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Geoffrey Baer shares the story of the remarkable man who gave Sox Park's famous intersection one of its names.

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The largest passenger ship to operate in the Great Lakes stopped at Navy Pier in the 1950s. Geoffrey Baer dives into the history of the S.S. Aquarama and more.

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Did a used-car salesman design and build his sleek and sporty luxury car right here in Chicago? Geoffrey Baer has that story and more.

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Geoffrey Baer answers viewer questions about Chicago's North suburban neighbors in this week's edition of Ask Geoffrey.

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Chicago street signs have it pretty tough. They get battered by the elements, vandalized, stolen – and worst of all, they get no gratitude for helping people navigate our city. Let’s tip our hats to Chicago’s poor unheralded street signs with two questions about these everyday heroes.

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Geoffrey Baer tracks down answers for three questions about Chicago's bygone streetcar heyday. 

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Did a used-car salesman design and build his sleek and sporty luxury car right here in Chicago? Geoffrey Baer has that story and more.

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Geoffrey Baer tackles three questions about Chicago's beloved rapid transit system, including the various spellings of the system, in this encore edition of Ask Geoffrey.

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Geoffrey Baer shares the story of the remarkable man who gave Sox Park's famous intersection one of its names.

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Chicago women had a professional baseball league of their own in the 1940s and '50s. Geoffrey Baer has the story of the National Girls Baseball League.

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In this edition of Ask Geoffrey, our local history expert Geoffrey Baer hits the streets to answer road-related questions such as, Why are there so many angled streets running northwest in Chicago? And, What exactly does Division Street divide? And, Where is Beethoven Place?

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For decades, a cocktail called the Downscope was served up at Skipper’s Marina on the Calumet River. Its recipe was a closely guarded secret, until now. Geoffrey Baer tells us what's up with the Downscope and answers other viewer questions on this edition of Ask Geoffrey.

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In the 1940s, a theater in the Loop was providing nightly news updates, and a professional cyclist was cleaning up with his Chicago chain of dry cleaning stores. Geoffrey Baer raises the curtain on these local history stories.