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Exposition Universelle (World Fair) Paris, 1900; black and white photograph; interior view showing the great telescope at the Optical Palace Stock Photo - Alamy
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Français : Porte - oculaire de la lunette astronomique ; exposition universelle de 1900 English: Great Paris Exhibition Telescope of 1900, eye-piece holder. 1900 175 Great Ex Telescope EyePiece Stock Photo - Alamy
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Vintage French Poster Exposition Universelle, La Grande Lunette de 1900, Palais de l'Optique Paris France Stock Photo - Alamy
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