Joseph Pennell's pictures of the Panama canal: reproductions of a series of lithographs made by him on the isthmus of Panama, January-March, 1912 (1912)
red, whenI made the drawing; with their armor plates. The lowerparts, I was told, are to be filled with air, and the gates,worked by electricity, will virtually float. The scaffolding isonly temporary, and so is the opening at the bottom and therailroad tracks, which were filled up and discarded… … VTHE GUARD GATE, GATUN V THE GUARD GATE, GATUN THERE is a safety gate in each lock, to protect, in caseof accident, the main lock gate, just suggested, withthe figures working at the armor-plate facing, on the ex-treme right. Beyond are the outer walls and approachesof the upper lock, and beyond…
Lithography
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