Region
United States
426
Alaska
101
Colorado
67
Pennsylvania
52
Arizona
48
Nevada
43
Utah
42
Idaho
39
California
36
New Mexico
30
Montana
27
Wyoming
25
Alabama
23
Illinois
22
West Virginia
21
Kentucky
19
Texas
19
Washington (State)
19
Oregon
17
Florida
16
Michigan
15
Arkansas
14
Kansas
13
Missouri
13
Oklahoma
13
Tennessee
13
Mississippi
12
South Dakota
12
Minnesota
11
West (U.S.)
11
New York (State)
10
North Carolina
9
Virginia
9
Appalachian Region
8
Germany
8
Seward Peninsula
8
North Dakota
7
Wisconsin
7
Georgia
6
Indiana
6
Maine
6
Southern States
6
Boulder County
5
Clark County
5
San Juan County
5
Soviet Union
5
Kenai Peninsula
4
Lake County
4
Louisiana
4
Malheur County
4
more ...