19x Postcard Of Philadelphia Skyline Across the Schuylkill River Philadelphia Philadelphia Skyline Across the Schuylkill River The largest city in Pennsylvania, Philadelphia was founded in 1682 by William Penn. It is commonly referred to as the "Birthplace of the Nation" because of the crucial role it played in America's struggle for independence from Britain; both the Constitution and Declaration of Independence were drafted here. Photographer - Richard Cummins Postcard size 4 x 6