Break in the tunnel at St. Anthony Falls

Break in the tunnel at St. Anthony Falls

Break in the tunnel at Saint Anthony Falls, 1869.

Break in the tunnel at St. Anthony Falls

Break in the tunnel at St. Anthony Falls

Break in the tunnel at Saint Anthony Falls, 1869.

The rapids of St. Anthony in 1869 before break in tunnel

The rapids of St. Anthony in 1869 before break in tunnel

The rapids of Saint Anthony Falls in 1869, as they appeared before the break in the tunnel.

John L. Merriam

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, St. Anthony Falls

Break in the tunnel at Saint Anthony Falls, 1869.

Bridge Square; Light Tower at center, Minneapolis

Bridge Square; Light Tower at center, Minneapolis

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

Old lighting tower at Bridge Square, Minneapolis

Old lighting tower at Bridge Square, Minneapolis

Lower section of the electric light mast at Bridge Square, Minneapolis, c.1883.

Stone Arch Bridge, Minneapolis

Stone Arch Bridge, Minneapolis

Description: Stone Arch Bridge, 1884.

Carleton College campus; note Goodsell Observatory.

Carleton College campus; note Goodsell Observatory

Image of original 1878 astronomical observatory (at right).

View of telescope, Goodsell Observatory, Carleton College, Northfield

View of telescope, Goodsell Observatory, Carleton College, Northfield

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

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