Region
United States
219
Hawaii
5
Atlantic Coast (U.S.)
4
California
3
Iraq
3
Pacific Area
3
Asia
2
Great Lakes (North America)
2
Guinea, Gulf of
2
Gulf Coast (U.S.)
2
Horn of Africa
2
Illinois
2
Indian Ocean Region
2
Kilauea National Wildlife Refuge (Hawaii)
2
Kilauea Point
2
Louisiana
2
Northwest, Pacific
2
Oregon, Western
2
Puerto Rico
2
Southeast Asia
2
United States Virgin Islands
2
Virginia
2
Washington (D.C.)
2
Wyoming
2
Yellowstone National Park
2
Antarctica
1
Canada
1
Caribou-Targhee National Forest
1
Chicago Metropolitan Area
1
Colorado
1
East Asia
1
Europe
1
Evansville
1
Evansville (Ind.)
1
Four Corners Region
1
Georgia
1
Gettysburg National Military Park (Pa.)
1
Glen Echo Park (Md.)
1
Idaho
1
Indiana
1
Iowa
1
Joshua Tree National Park (Calif.)
1
Latin America
1
Livermore
1
Lowell (Mass.)
1
Lowell National Historical Park (Lowell, Mass.)
1
Maryland
1
Massachusetts
1
Mesa Verde National Park
1
Mesa Verde National Park (Colo.)
1
more ...