Construction of a computer room addition at the base of the 150-foot tower telescope, Mount Wilson Observatory. An unidentified construction worker, wearing coveralls and a hat, is seen working on the foundation of the new building. A portion of the tower's base is seen at the far left, near the new foundation. An automobile is seen in the background, in front of some trees. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
Construction workers--United States Foundations Bricks Brickwork Towers Coveralls Hats Automobiles Trees Construction--California--Mount Wilson Construction equipment Building--California--Photographs Building construction--California--Mount Wilson Building sites--California--Mount Wilson--Photographs Buildings--California--Mount Wilson--Photographs Photographic prints. (gmgpc)
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