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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
Culebra Cut. Cucaracha Slide
Steam shovel No. 256 working on the bottom of the canal. Jan. 4, 1913.
Handy (Photographer), Hallen (Photographer), Special Collections/University Archives (Publisher)
1913