Before there was the CTA, there was the CSL. The Illinois Railway Museum. Union Illinois USA. June 2001.

Before there was the Chicago Transit Authority in the windy city, there was the predecessor agency Chicago Surface Lines.

I took this unique photo during a June 2001 visit to the Illinois Railway Museum located in the town of Union Illinois.
Seen here at the east end of the museum's demonstration trolley loop, are a 1944 White transit bus and a 1922 electric streetcar from the Chicago Surface Lines. CSL was mainly an electric streetcar operator, but also served Chicagoans with a modest fleet of gasoline powered motor buses as well.