Wow, a lot of history here.  Wikipedia says: The hotel originally opened in 1927 as the Stevens Hotel, across Balbo Street from the older Blackstone Hotel. At the time, the Stevens was the largest hotel in the world.  And now?   It’s The Hilton Chicago, a landmark that overlooks Grant Park, Lake Michigan, and the Museum Campus. It is the third-largest hotel in Chicago by number of guest rooms and has housed every president of the United States since its opening in 1927.  As a bonus, inside the stamp area of this unused card, it says “Hand to Floor Clerk for Free Mailing”.  We’re tempted.  Grade: 2