Interior of Mount Wilson Observatory physical laboratory, under construction, as seen from the northwest window. The brick building is without a roof; some of the support pillars in the interior are visible. Wooden sawhorses and other construction materials are seen. In the background, a utility pole and trees are visible. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
Mount Wilson Observatory Astronomical observatories Laboratories Construction--California Sawhorses Construction equipment Brickwork Electric lines--Poles and towers Wire Trees Interiors Photographic prints. (gmgpc)
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