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Period: to
cable cars replaced horse-drawn cabs
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First elevated train constructed
ran from Pershing and State to Congress and Wabash -
train ran to Jackson Park
made to serve Columbian Expedition -
Charles Tyson Yerkes elevated the Loop system
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State Street Subway (now red line) opened
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CTA took over the railway system
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Blue Line opened
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CTA extended track to O'Hare
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CTA extended track to Midway
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Pink Line opened
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Newest L stop Constructed
the Washington-Wasbash stop