Pittsburg Philadelphia Gettysburg Harrisburg
Independence National Site Mount Davis Allengheny Reservoir Fallingwater
Susquehanna River Allegheny River Delaware River Ohio River
12.5 million 2.5 million 6.5 million 500 000
Pittsburg Philadelphia Lancaster Harrisburg
Harrisburg Gettysburg Pittsburg Lancaster
Kellogs Proctor & Gamble H J Heinz & Co Hersheys
First State Constitution State Centennial State Keystone State
Rocky Mountains Sierra Nevada Appalachian Mountains Blue Mountains