Results

    Four men (unidentified) walking in tunnel wearing hard hats and carrying flashlights.

    Consulting Engineer drawing of Sections of the Discharge Tunnel. Included in the drawing is the "cross section of tunnel with timbering" and "longitudinal section showing Timber in straight tunnel".

    Photograph of water rushing through hydro tunnel.

    Another photograph of several men walking through the tunnel.

    Large group of men standing in the tunnel wearing boots and hard hats.

    Group of men in the hydro tunnel with a loaded dolly and large lamp for light.

    One male looking down tunnel.

    Drawing by consulting engineer dated October 19, 1901. Scale is noted as 1 inch = 1 foot.

    Four men standing in hydro tunnel.

    Four men (unknown) standing in the tunnel wearing hard hats.

    A large group of men in hard hats in the tunnel. The names of the men are unknown.

    Plan and profile of discharge tunnel along Niagara River. The horizontal scale is 1 inch = 100 feet, the vertical scale is 1 inch = 40 feet. The drawing is dated November 7, 1902.

    Engineer drawing (untitled), some of the labels read "exciter chamber", "fore bay", "power house floor".

    Appears to be an engineer's drawing of the Hydro Station. It is a cross-section view of the interior.

    "Tintypes were the invention of Prof. Hamilton Smith of Ohio. They begin as thin sheets of iron, covered with a layer of black paint. This serves as the base for the same iodized collodion coating an