Construction site of the 100-inch telescope building, Mount Wilson Observatory, as seen from the 150-foot tower telescope. The wooden form for the concrete pier is under construction. Trees surround the construction site; the San Gabriel Mountains are in the background. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
Construction--California Construction projects Concrete construction--Formwork Construction equipment Hoisting machinery Buildings--California--Mount Wilson--Photographs Trees San Gabriel Mountains (Calif.) Mount Wilson Observatory Photographic prints. (gmgpc)
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