Observatory dome balcony, under construction. 100-inch telescope dome, Mount Wilson Observatory. Two construction workers are in the foreground, working on the platform. Piles of lumber are in the center of the platform behind them, as is what appears to be a wooden ladder. Trees are visible in the background. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
Construction workers--United States Framing (Building) Building, Iron and steel Observatory domes Balconies Lumber Ladders Trees Mount Wilson Observatory Photographic prints. (gmgpc)
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