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Date: 2008-03-18 03:18:48Domes Hale Solar Laboratory Mount Wilson Observatory Hale Yerkes Observatory California Institute of Technology Carnegie Institution for Science Pasadena California Sunspot California University of Chicago George Ellery Hale | NP3 Form[removed]R«v. M«)Add to Reading ListSource URL: pdfhost.focus.nps.govDownload Document from Source WebsiteFile Size: 326,74 KBShare Document on Facebook |