Geographic Subject
California
100
Hawaii
41
Texas
31
Michigan
30
United States
25
Ohio
23
Wisconsin
22
Iowa
21
Japan
18
India
16
North Dakota
16
Montana
11
Brazil
10
Kansas
9
North Carolina
9
Soviet Union
9
El Dorado County
7
El Dorado County (Calif.)
7
Florida
7
Placer County
7
Placer County (Calif.)
7
Santa Barbara County
7
Santa Barbara County (Calif.)
7
Southern States
7
Indonesia
6
Poland
6
Alabama
5
Argentina
5
Germany
5
Humboldt County
5
Humboldt County (Calif.)
5
Mexico
5
New York (State)
5
Colusa County
4
Colusa County (Calif.)
4
Mendocino County
4
Mendocino County (Calif.)
4
Minnesota
4
Mississippi
4
Modoc County
4
Modoc County (Calif.)
4
Pakistan
4
Russia
4
Tropics
4
Yugoslavia
4
Alameda County
3
Alameda County (Calif.)
3
Arkansas
3
Australia
3
China
3
more ...