Region
prev ...
Liberia
2
Loudoun County
2
Louisiana
15
Louisville (Ky.)
1
Malden
1
Marietta
1
Marietta (Ohio)
1
Maryland
7
Maryland, Pennsylvania, Virginia, and Washington D.C.
1
Massachusetts
23
McLoughlin House National Historic Site (Oregon City, Or.)
1
McMurdo Sound Region
1
Mecca
1
Mediterranean Region
1
Memphis
1
Mexican-American Border Region
6
Mexico
4
Mississippi
1
Missouri
6
Montréal
1
Mount Rushmore National Memorial (S.D.)
1
Mount Vernon
1
Mount Vernon (Estate)
5
Mount Vernon (Va : Estate)
1
Mount Vernon (Va. : Estate)
14
Mount Vernon (Va.)
1
Mount Vernon Gardens (Va.)
1
Nebraska
1
Netherlands
1
New England
1
New Hampshire
1
New Jersey
9
New London
1
New Orleans
8
New Orleans (La.)
8
New Spain
1
New Windsor (N.Y. : Town)
1
New Windsor Cantonment Site (New Windsor, N.Y.)
1
New York
10
New York (N.Y.)
8
New York (State)
26
Newburgh (N.Y.)
1
Newburyport
1
Newport
1
Niger River
1
Normandy
1
North America
3
North Carolina
4
Northeast Passage
2
Northern Ireland
1
more ...