Construction of the first floor of a new wing at the Hale Observatories office building, Pasadena. Bricklayers are seen throughout the construction area. Piles of steel rods are seen in the foreground. A portion of the Observatory's office building is seen behind the construction area. Trees are in the background, far right. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
Office buildings--Design and construction Office buildings--California--Pasadena Brickwork Concrete construction Construction workers--United States Hale Observatories Steel, Structural Trees Photographic prints. (gmgpc)
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