Region
7th Street (Philadelphia, Pa.)
1
Abbott Farm National Historic Landmark (Hamilton (Mercer County, N.J.))
1
Abbott Farm National Landmark (Trenton, N.J.)
1
Afghanistan
1
Africa
3
Africa, North
1
Afrique
1
Alabama
3
Alaska
1
Albany
1
Albany (N.Y.)
1
Albemarle County (Va.)
1
Allemagne
1
America
43
American Bottom (Ill.)
1
América
1
Amérique
13
Amérique du Nord
9
Amřique du Nord
1
Amérique du Nord
1
Anau (Turkménistan : Site archéologique)
1
Anau Site
1
Anau Site (Turkmenistan)
1
Andes Region
1
Anglesey (Gwynedd)
1
Anglesey (Wales)
1
Angleterre
3
Appleby (England)
1
Arch Street (Philadelphia, Pa.)
1
Arizona
3
Arkansas
6
Ashkhabadskai͡a oblastʹ
1
Ashkhabadskai︠a︡ oblastʹ
1
Athens
1
Athens (Pa.)
1
Barbados
1
Bedford County (Va.)
1
Berks County
2
Berks County (Pa.)
2
Berkshire
2
Berkshire (England)
2
Bethlehem
1
Beverwyck (N.Y.)
1
Blueberry Hill Site (Dover, Del.)
1
Bolivia
2
Boonesboro
1
Boonesboro (Ky.)
1
Borders of England
1
Borders of Scotland
1
Boston (Mass.)
1
more ...