Thomas Grubb (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Thomas Grubb" in English language version.

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archive.org

Todd, David Peck; Lynn, William Thynne (1899). Stars and Telescopes. Boston: Little, Brown, and Company. David Todd stars telescopes.

arm.ac.uk

A Short History of Armagh Observatory

europa.com

History of the Cauchoix objective

harvard.edu

adsabs.harvard.edu

A Recently Discovered Photograph of Edward Joshua Cooper of Markree (1797-1863)

saao.ac.za

Glass, I.S. (1997). Victorian Telescope Makers: The Lives and Letters of Thomas and Howard Grubb. Institute of Physics Publishing (Taylor and Francis). ISBN 0-7503-0454-5.