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- United States 94
- Mexico 49
- Canada 42
- Great Britain 3
- British Columbia 2
- Washington (State) 2
- B.C. Hydro 1
- Dresel, Emil 1
- Hallock, Absolom B. 1
- Italy 1
- Kuchel & Dresel 1
- Kuchel, Charles Conrad, 1820- 1
- Maine 1
- Morgan, William L. 1
- New Brunswick 1
- Pugh, Walter D. 1
- United States. Bonneville Power Administration 1