Construction of the 100-inch telescope building foundation, Mount Wilson Observatory. An unidentified construction worker sits on top of one of the brackets along an exterior wall. Wooden scaffolding and ladders surround a portion of the wall. The concrete foundation wall is seen in the foreground. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
Construction--California Construction projects Brackets Foundations--Design and construction Astronomical observatories Observatories Scaffolding Ladders Construction workers--United States Mount Wilson Observatory Photographic prints. (gmgpc)
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