Region
- Pennsylvania 25 results
- United States 20 results
- North America 19 results
- Delaware 16 results
- Amérique du Nord 9 results
- New Jersey 9 results
- Delaware River Valley (N.Y.-Del. and N.J.) 6 results
- Ohio 6 results
- New Castle County 5 results
- New Castle County (Del.) 5 results
- New York (State) 5 results
- Virginia 5 results
- America 4 results
- Arkansas 4 results
- Northeastern States 4 results
- Southwest, New 4 results
- Susquehanna River Valley 4 results
- Colorado 3 results
- Dover 3 results
- États-Unis 3 results
- Georgia 3 results
- Great Lakes Region (North America) 3 results
- Kent Co 3 results
- Kentucky 3 results
- Louisiana 3 results
- Mesa Verde National Park 3 results
- Mesa Verde National Park (Col.) 3 results
- Mesa Verde National Park (Colo.) 3 results
- Mississippi River Valley 3 results
- New Castle Co 3 results
- Philadelphia 3 results
- Philadelphia (Pa.) 3 results
- Alabama 2 results
- Berks County 2 results
- Berks County (Pa.) 2 results
- Canada 2 results
- Chaunis Temoatan 2 results
- Christiana 2 results
- Illinois 2 results
- Kansas 2 results
- Lewden Green Site (Christiana, Del.) 2 results
- Louisiane 2 results
- Mississippi River 2 results
- Nordamerika 2 results
- Northwest Coast of North America 2 results
- Scarborough Road (Dover, Del.) 2 results
- Southern States 2 results
- Trenton Region 2 results
- Trenton Region (N.J.) 2 results
- Wisconsin 2 results more…