Construction of 60-inch telescope building dome as seen from the north; hoisting up door at bottom of shutter opening. Mount Wilson Observatory. An unidentified man in a suit and hat stands on a curved steel roof section that is still on the ground. The steel framing for the domed roof is clearly visible; scaffolding surrounds the round building. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
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