The Blackstone: Home of the "Smoke-Filled Room"

You've no doubt heard the term "smoke-filled room" before. And you can probably conjure up a picture of one in your mind, filled with insiders secretly deciding the fate of a political contest. As the tour guide on Chicago's Big Bus will tell you (and Wikipedia will confirm) the term was first used to describe the atmosphere inside the Blackstone Hotel on Michigan Avenue. While smoking inside hotels throughout North America is becoming more and more rare, a "smoke filled room" lives on as a metaphor for a secret political gathering. I wonder if the Blackstone has put a plaque on the wall?