Region
United States
87
Colorado
43
New York (State)
14
California
9
Pennsylvania
9
Virginia
9
New Jersey
8
Massachusetts
7
New York
6
Ohio
6
Dayton Aviation Heritage National Historical Park (Ohio)
5
Great Falls of the Passaic Society for Universal Manufacturing Historic District (Paterson, N.J.)
5
Gettysburg National Military Park
4
Gettysburg National Military Park (Pa.)
4
Hawaii
4
Alaska
3
Arizona
3
Manzanar National Historic Site
3
Manzanar National Historic Site (Calif.)
3
Maryland
3
Antietam National Battlefield
2
Antietam National Battlefield (Md.)
2
Battery Weed (N.Y.)
2
Blowmedown Farm
2
Blowmedown Farm (N.H.)
2
Bodie
2
Bodie Bowl
2
Boulder County
2
Cambridge
2
Cape Lookout National Seashore
2
Cape Lookout National Seashore (N.C.)
2
Cave Creek Canyon
2
Cornish (N.H. : Town)
2
Cornish (Town)
2
Coronado National Forest (Ariz. and N.M.)
2
Denver
2
Dinwiddie County
2
Florida
2
Fredericksburg and Spotsylvania National Military Park
2
Gateway National Recreation Area (N.J. and N.Y.)
2
Governors Island (New York County)
2
Governors Island (New York County, N.Y.)
2
Governors Island National Monument (New York, N.Y.)
2
Kentucky
2
Longfellow House-Washington's Headquarters National Historic Site (Cambridge, Mass.)
2
Lookout, Cape (N.C.)
2
Muir Woods National Monument
2
Muir Woods National Monument (Calif.)
2
New Bedford
2
New Bedford (Mass.)
2
more ...