Lower section of the 100-inch telescope tube, mounted on a truck, outside the Mount Wilson Observatory's Pasadena offices, side view. An unidentified construction worker poses behind the tube at the back of the truck. Behind the truck and tube an exterior wall of the office building is seen; folded awnings hang over the windows. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
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