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