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| The water-power of the Falls of Niagara applied to manufacturing purposes : the hydraulic tunnel of the Niagara Falls Power Company, an accurate description of one of the greatest industrial undertakings of the age, with plans, maps and illustrations. -- | 572 |
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| The water-power of the Falls of Niagara applied to manufacturing purposes : the hydraulic tunnel of the Niagara Falls Power Company, an accurate description of one of the greatest industrial undertakings of the age, with plans, maps and illustrations. -- | 21 | 33 | 20 | 16 | 21 | 25 | 16 |
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