Science and Technology | Page 22

John L. Merriam

John L. Merriam, c.1865, one of the primary people responsible for the tunnel project.

Break in the tunnel, St. Anthony Falls

Break in the tunnel at Saint Anthony Falls, 1869.

Bridge Square; Light Tower at center, Minneapolis

Bridge Square, Minneapolis, with the electric light mast at center, c.1884.

Lighting tower at Bridge Square, Minneapolis

Lower section of the electric light mast at Bridge Square, Minneapolis, ca. 1883. The first centralized hydroelectric power in the United States turned on in downtown Minneapolis on September 5, 1882.

Stone Arch Bridge, Minneapolis

Description: Stone Arch Bridge, 1884.

Carleton College campus; note Goodsell Observatory

Image of original 1878 astronomical observatory (at right).

View of telescope, Goodsell Observatory, Carleton College, Northfield

Interior of Goodsell Observatory, showing its new telescope, 1891. Photographer: John Runk.

Observatory, Carleton College, Northfield

Architect's c.1887 drawing of Goodsell Observatory, including a small floor plan. From American Architect and Building News, no. 601 (July 2, 1887).

Hydroelectricity in Minneapolis, September 5, 1882

Centralized hydroelectric power came on for the first time in the United States in downtown Minneapolis on September 5, 1882. Minnesota Brush Electric Company produced the power, beating a similar effort in Appleton, Wisconsin, by twenty-five days.

Goodsell Observatory, Carleton College, Northfield

Exterior of Goodsell Observatory, 1891. Photographer: John Runk.

Gale Family Library