Windy City commuters' inits.

• El-overseeing org.
• Windy City rail system (abbr.)
• Loop initials
• Windy City 'L' overseer
• Windy City rail inits.
• Second City transportation agcy
• El operator in the Windy City, briefly
• Windy City transportation org
• Org. with a blue line to O'Hare

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