Pennsylvania's past is America in microcosm, containing many elements found in American history as a whole. Philadelphia played a singular role in the creation of the United States, serving as the site of the First and Second Continental Congresses, the signing of the Declaration of Independence, and the Constitutional Convention. Pennsylvanians James Wilson and Gouverneur Morris were considered two of the principal architects of our treasured Constitution.
Founded as a 'holy experiment' out of William Penn's desire to establish a haven for persecuted fellow Quakers, the Keystone State is now highly diverse, with its economy fueled by iron and steel mills, coal mines, and agricultural activities aided by unusually fertile land.
The Postal System issued the Pennsylvania statehood stamp as part of its philatelic commemoration of the bicentennial of the United States Constitution. Richard Sheaff of Needham Heights, Massachusetts, designed the stamp.