Mount Wilson Solar Observatory Office and workshops, Pasadena, as seen from a second-story building. This building was the optical laboratory for the Mount Wilson Observaotry, located at 813-815 Santa Barbara street, Pasadena. Several building rooftops are visible, and there are trees in the background. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
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