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Nml555 - CC BY-SA 3.0
unknown -
Onehandclapping - CC BY-SA 3.0
unknown - Public Domain
Repdan - CC BY-SA 3.0
Library of the London School of Economics and Political Science -
Mathew Brady Levin Corot Handy - Public Domain
not credited - Public Domain
Unknown (Elliott & Fry) - Public Domain
Editor: Jaci Cutler - Public Domain
David Allan - Public Domain
user at project - Public Domain
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Thibaut, Jean-Claude
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Lawrence, Gertrude
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Vaugeois, Denis
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Nml555 - CC BY-SA 3.0
Mertl, Gregory
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unknown -
Titulescu, Nicolae, 1882-1941
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Jacobi, Johann Georg, 1740-1814
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Lievens, Jan, 1607-1674
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Onehandclapping - CC BY-SA 3.0
Sze, Arthur.
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Paul, Ron, 1935-....
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unknown - Public Domain
Karth, Joseph E. (Joseph Edward), 1922-2005
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Cannon, James, 1864-1944
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Edwards, Ninian, 1775-1833
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Repdan - CC BY-SA 3.0
Gelernter, David Hillel.
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Library of the London School of Economics and Political Science -
Webb, Beatrice, 1858-1943
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Bein, Alex, 1903-1988
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Morden, John, Sir, 1623-1708
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Mathew Brady Levin Corot Handy - Public Domain
Deweese, John Thomas, 1835-1906
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not credited - Public Domain
Savage, Richard, 1846-1903
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unknown - Public Domain
Dick, Steven J.
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Unknown (Elliott & Fry) - Public Domain
Sullivan, Arthur
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Editor: Jaci Cutler - Public Domain
Stapley, Delbert L. (Delbert Leon), 1896-1978
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Franck, Kaj, 1911-1989
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unknown - Public Domain
Russell, Samuel, 1789-approximately 1862
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Turner, Kathleen, 1954-
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Charlevoix, Pierre-François-Xavier de, 1682-1761
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Hadfield, George, 1787-1879
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Flintoe, Johannes, 1787-1870
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unknown - Public Domain
Vettori, Pietro, 1499-1585
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David Allan - Public Domain
Craig, James, -1795
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user at project - Public Domain
Korteweg, D. J. (Diederik Johannes), 1848-1941