Region
United States
4
Canada
2
Delabole (Pa.)
2
États-Unis
2
New Jersey
2
Northampton County
2
Northampton County (Pa.)
2
Pennsylvania
2
Plainfield (Pa.)
2
Abbott Farm National Historic Landmark (Hamilton (Mercer County, N.J.))
1
Abbott Farm National Landmark (Trenton, N.J.)
1
America
1
Amérique du Nord
1
Caroline du Nord
1
Delaware River Valley (N.Y.-Del. and N.J.)
1
Great Britain
1
Hamilton (Mercer County, N.J. : Township)
1
Kolonie Carolina
1
North Carolina
1
Oklahoma
1
Trenton Complex Site (N.J.)
1
Trenton Region
1
Trenton Region (N.J.)
1
Washington (State)
1