Region
- Great Britain 52 results
- United States 40 results
- England 15 results
- France 15 results
- Germany 10 results
- New Zealand 7 results
- Switzerland 4 results
- Austria 2 results
- China 2 results
- Japan 2 results
- Netherlands 2 results
- Arizona 1 results
- Basel 1 results
- Colorado River Watershed (Colo.-Mexico) 1 results
- Czechoslovakia 1 results
- Denmark 1 results
- Finland 1 results
- Grand Canyon (Ariz.) 1 results
- Grand Canyon Region 1 results
- Grande-Bretagne 1 results
- Hawaii 1 results
- India 1 results
- Ireland 1 results
- Italy 1 results
- Jamaica 1 results
- North America 1 results
- Russia 1 results
- Russia (Federation) 1 results
- Seattle 1 results
- Singapore 1 results
- Soviet Union 1 results
- Sweden 1 results
- Tübingen 1 results
- Tübingen (Germany) 1 results
- Washington (State) 1 results