This original postcard is from the 1933 Century Of Progress (Chicago World's Fair) which was held in Chicago. It is in excellent condition but is slightly yellowed and the front features the "Art Institute, Adler Planetarium, Shedd Aquarium & Navy Pier, A Century of Progress". The reverse side features a postcard format, which is unused and measures approx. 5 1/2" x 3 1/2".