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Lateral Culvert Forms and Floor, Miraflores Lock, July, 13, 1910

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

1910

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Gatun Upper Locks. Miter gate moving machine

Structural steel girders for towing locomotive track supports in foreground. June, 1912.

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

1912