Construction of the base of the 60-inch telescope dome building, Mount Wilson Observatory. Unidentified construction workers stand on and around the steel structural framework and other scaffolding. Construction materials are seen in the area. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
Construction--California Construction projects Construction equipment Construction workers--United States Round buildings Steel framing (Building) Steel, Structural Mount Wilson Observatory Observatory domes Scaffolding Photographic prints. (gmgpc)
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