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Pedro Miguel Lock. Concrete Mixers, Loading Concrete in Buckets. November, 1910

Handy (Photographer), Hallen (Photographer), Special Collections/University Archives (Publisher)

1910

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Operation of Miraflores Locks

S. S. Santa Clara in lower west chamber ready for water to be lowered to sea level. Looking north. June 19, 1914.

Handy (Photographer), Hallen (Photographer), Special Collections/University Archives (Publisher)

1914