Bölge
United States
8
Mississippi
3
England
2
Maine
2
New England
2
New York (N.Y.)
2
Southern States
2
California
1
California, Gulf of
1
California, Gulf of (Mexico)
1
Catskill Mountains Region (N.Y.)
1
Germany
1
Great Britain
1
Hudson River Valley (N.Y. and N.J.)
1
Mexico
1
Nebraska
1
Russia
1
Salinas River Valley (Calif.)
1
Spain
1