I saw this on the CTA's Web site. Get your applications in, all ye artists out there.
CTA Arts in Transit Program Seeks Artists for Brown and Red Line Stations -- Deadline January 20, 2006
The City of Chicago Public Art Program invites local, national and international professional artists and artist teams to submit qualifications for commissions of permanent public works of art for the CTA Arts in Transit Program. Sites have been identified at twenty-six (26) transit stations to be renovated along the CTA's Brown and Red Lines beginning in 2006 through 2009. Deadline for qualification submissions for Phase I projects is January 20, 2006.
For more information, read the whole RFQ on Chicago Artists Resource.
And here's basic info about the Chicago Public Art Program.