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POPULAR SCIENCE MONTHLY
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| Interior Power House No 1, Niagara Falls Power Company (American side). | Generator and Governor (oil pressure operation). Niagara Power Company (American side). | |
| Interior of Power House No. 2, Niagara Falls Power Company (American side). | Interior Power House, Ontario Power Company, Niagara Falls, Ontario, showing ten and twelve thousand horse power generators and double turbines. | |
