Keywords: Chicago Century of Progress Fort Dearborn 1c 1933 issue U.S. stamp.jpg Century of Progress was a World's Fair held in Chicago as The Chicago World's Fair from 1933 to 1934 to celebrate the city's centennial 1933-05-25 U S Postal Service; National Postal Museum http //arago si edu/category_2033018 html Century of Progress Issue Bureau of Engraving and Printing other versions PD-USGov Stamps of the United States 1931-1940 Commemorative stamps of the United States Century of Progress Fort Dearborn Green stamps History of the United States on stamps |