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    Ancon Hospital

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

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    I.C.C. Sanitarium, Taboga Island

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

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    Men of color standing on a porch, eating

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

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    Ruins of a Sentry Box, Old Panama, March 1907

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

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    Street of unknown town in Panama, all dug up

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

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    Graphical representation of yardage, Panama Canal, July 1, 1913

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

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    Geological cross-sections of Culebra Cut, showing sliding ground

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

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    Isthmian Canal Commission - Atlantic Division general map: Gatun Locks and Dam

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

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    Isthmian Canal Commission, Pacific Division, Pedro Miguel to Panama Bay, (map of west end of canal, and Excavation Diagram)

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

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    Isthmian Canal Commission - Atlantic Division Sections of Gatun Dam

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

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    Tropical Foliage near Bohio

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

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    Blast at Bas Obispo, Sept. 19, 1907 (1/3)

    "Powder used, 9,600lbs., Rock displaced 29,640 cu. yds. 72 on one side, 106 1/2 on the other. "

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

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    Blast at Bas Obispo, Sept. 19, 1907 (2/3)

    "Powder used, 9,600lbs., Rock displaced 29,640 cu. yds. 72 on one side, 106 1/2 on the other. "

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

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    Blast at Bas Obispo, Sept. 19, 1907 (3/3)

    "Powder used, 9,600lbs., Rock displaced 29,640 cu. yds. 72 on one side, 106 1/2 on the other. "

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

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    Old French Excavation in cut near Empire

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

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    Cucaracha Slide

    Looking South from Contractor's Hill, - Oct. 23, 1910.

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

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    Black man standing beside a railroad derrick on curved tracks

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

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    View of Culebra from Reservoir, showing Administration Building to left, hotel to the right and Y. M. C. A. Club House in center

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

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    An Isthmian Canal Commission locomotive

    "An Isthmian Canal Commission locomotive pushing a dirt scraper and a lot of rocks."

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

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    Old French Ladder dredge, August 7th, 1907

    "Some boats with modified coal dredges."

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

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    Dinner Time at a Commission Hotel, Gorgona

    "A group of men standing around the door of a summer hotel."

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

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    A woman and a girl standing in a damaged street in an unnamed town

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

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    Comacho Diversion Tunnel, Bas Obispo, May 22, 1908

    "Looks like Buffalo Creek."

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

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    General View of Ancon Hospital

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

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    Suspension bridge across cut at Empire

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