Heber Doust Curtis

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1	PDF Document Add to Reading List Source URL: www.nasonline.org Language: English - Date: 2012-10-10 14:56:28 McMath–Hulbert Observatory Robert Raynolds McMath Science and technology in the United States Francis Charles McMath McMath Michigan Heber Doust Curtis Spectroheliograph University of Michigan Astronomy Solar telescopes
2	PDF Document Add to Reading List Source URL: www.nasonline.org Language: English - Date: 2011-11-16 16:15:55 California Heber Doust Curtis Telescopes Robert Raynolds McMath McMath–Hulbert Observatory Crossley telescope Allegheny Observatory Ormond Stone Nicholas Mayall Astronomy Science and technology in the United States Lick Observatory