Letters on Astronomy, by Denison
   Olmsted                                 40240
     [Subtitle: in which the Elements of the Science are Familiarly
                 Explained in Connection with Biographical Sketches of the
                 Most Eminent Astronomers]
     [Link: http://www.gutenberg.org/4/0/2/4/40240 ]
     [Files: 40240.txt; 40240-8.txt; 40240-h.htm]
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   Chuck