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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 tackles three questions about Chicago's beloved rapid transit system, including the various spellings of the system, old downtown entrances between elevated stations and Loop stores and a mysterious tunnel a viewer spotted while riding the Blue Line.

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Geoffrey Baer

In this encore edition of Ask Geoffrey, our local history expert Geoffrey Baer revisits a Streeterville puppet show, examines underground architecture on the Blue Line and digs deep into the history of Montrose Beach.