CTA Surface System History presented by the Illinois Railway Museum

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Route Number 506

  • 506 - South Joliet-Cresthill - 01/1978
  • 506 - South Joliet-Cresthill - 04/02/1979
  • 506 - Washington-Second Avenue - 11/23/1981

  • 506 - Washington-Second Avenue - 01/31/1983
  • 506 - Washington-Second Ave - 08/24/1987





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