This original postcard is from the 1933 Century Of Progress (Chicago World's Fair) which was held in Chicago. It is in excellent condition and the front features the "Research Rainbow - General Motors Building". The reverse side features a postcard format, which is unused and a paragraph that says "From every part of the world, millions of visitors are coming to A Century of Progress, Chicago. One of the great sights is the General Motors building. This exhibit alone is worth a trip to the World's Fair. Plan to spend at least one day under the Tower by the Lake" and measures approx. 5 1/2" x 3 1/2".