This original postcard is from the 1933 Century Of Progress (Chicago World's Fair) which was held in Chicago. It is in very good condition and the front features the "Otis Elevator Exhibit". The reverse side features a postcard format, which is unused and a paragraph that says "Sky-Ride's twin steel towers are 628 feet high & three-eighths of a mile apart. The eight Otis Automatic Signal-Control Sky-Ride Elevators carried 6,000,000 passengers in five and one-half months last year-a new record for intensive elevator service. When you visit the fair, don't fail to go behind the scenes and see these elevator machines in operation" and measures approx. 5 1/2" x 3 1/2".