| Park Name | Notes | Stamp(s) |
Allegheny Portage RailroadNational Historic Site |
An old incline railroad system. |
|
Delaware Water GapNational Recreation Area |
Waterfalls, beaches. | ![]()
|
Edgar Allen PoeNational Historic Site |
The writer's home. | ![]() ![]()
|
EisenhowerNational Historic Site |
The President's house. |
|
Flight 93National Memorial |
Where the plane crashed on 9-11. |
|
Fort NecessityNational Battlefield |
Washington's first battle. |
|
Friendship HillNational Historic Site |
A treasury secretary's house. |
|
GettysburgNational Military Park |
The major civil war battle. |
|
Hopewell FurnaceNational Historic Site |
An iron forge. |
|
Johnstown FloodNational Memorial |
Remnants of the dam that burst. |
|
IndependenceNational Historical Park |
The beginning of America. |
|
Middle DelawareNational Scenic River |
Inside Delaware Water Gap NRA. |
|
SteamtownNational Historic Site |
Steam trains. |
|
Thaddeus KosciuszkoNational Memorial |
The smallest unit. |
|
Upper DelawareScenic and Recreational River |
Roebling bridge, and Zane Gray museum. |
|
Valley ForgeNational Historical Park |
Washington slept here. |
|