Group portrait of Mount Wilson and Hale Observatories research staff & staff associates in the Hale Library, Pasadena. Twenty-five (25) men, most of whom are wearing suits and ties, are posed in three rows in front of books in the Hale Library. A portrait painting hangs on the wall in the midst of the bokshelves. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
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