Region
Aberdeen (Md.)
1
Africa
2
Afrique du Sud
1
Alabama
5
Alaska
29
Alburg (Vt.)
1
Allegany Indian Reservation (N.Y.)
1
Allegheny River (Pa. and N.Y.)
1
Amazon River
1
Anadarko (Okla.)
1
Annapolis (Md.)
1
Appalachian Region
1
Aqueduct Bridge (Washington, D.C., and Va.)
1
Arctic Regions
1
Arctic regions
1
Argentina
9
Arizona
9
Arkansas
4
Arlington (Va.)
1
Armenia
1
Atlanta (Ga.)
3
Atlantic Ocean
2
Augusta (Ga.)
1
Australia
1
Baltimore (Md.)
1
Bear River Migratory Bird Refuge (Utah)
1
Beijing (China)
1
Belgium
3
Black River (Mo. and Ark.)
1
Bluefields (Nicaragua)
1
Bogotá (Colombia)
1
Bolivia
1
Boston
2
Boston (Mass.)
2
Brazil
1
Brooklyn (New York, N.Y.)
1
Brownsville (Tex.)
1
Brussels (Belgium)
1
California
20
Camp Verde (Ariz.)
1
Canada
3
Canal Zone
4
Cape Cod Canal (Mass.)
1
Carson City (Nev.)
2
Carson River (Nev.)
2
Casa Grande Ruins National Monument (Ariz.)
1
Cattaraugus Indian Reservation (N.Y.)
1
Cavite Province (Philippines)
1
Champlain, Lake
1
Charleston (S.C.)
1
more ...