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d'Orleans, Pere Cherubin. La Vision Parfaite volume 2, Paris, France

Harris, Thomas and William
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 225

Hartsoeker, N.
Utrecht University Museum, Utrecht, The Netherlands
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Luyts, Astronomica institutio

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Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
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Wellcome Images, London, United Kingdom
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National Maritime Museum, Greenwich (London), England
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Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 40

Howe, Joseph
Scheepvaartmuseum, Amsterdam, The Netherlands
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Hughes, H
Dumfries Museum & Camera Obscura, Dumfries, Scotland
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Hurt, Joseph
Optisches Museum, Jena, Germany
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Huygens, Christiaan, 1655
Utrecht University Museum, Utrecht, The Netherlands
LI-38

Huygens, Christiaan, 1686
Utrecht University Museum, Utrecht, The Netherlands
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Huygens, Christiaan, 1656
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Wellcome Images, London, United Kingdom
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National Maritime Museum, Greenwich (London), England
NAV1541

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National Maritime Museum, Greenwich (London), England
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National Maritime Museum, Greenwich (London), England
NAV1615

Marshall, John, 1700 c.
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Marshall, John, 1700 c.
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