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G. W. Ritchey

(Ritchey, G. W. (George Willis), 1864-)

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Ritchey, G. W. (George Willis), 1864-: On the construction of a silvered glass telescope, fifteen and a half inches in aperture, and its use in celestial photography (Smithsonian Institution, 1904), also by Henry Draper (page images at HathiTrust)

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