The publisher was Charles Delagrave (1842-1934), an educational publisher with a specialization in maps and atlases. M. Ch. Simon was the director of " l'Observatoire de Marseille ,an astronomical observatory located in Marseille, France, with a history that goes back to the early 18th century.
H.21.5 x D 10 in , some restoration of the under the group of star named Eagle , some stabilized separation in part of the middle .
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