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unknown - Public Domain
Richard Urquhart Goode - Public Domain
Tusco - CC BY-SA 4.0
Erreka - Public Domain
Solomon Farnham Kimball - Public Domain
Anonymous -
Tsukioka Yoshitoshi - Public Domain
Rebecca Rex - CC BY 3.0
original uploader - CC BY 2.5
Yuval Yaron - CC BY-SA 3.0
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original uploader - Public Domain
Bīrūnī, Muhammad ibn Ahmad, 973?-1048
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Keith, Arthur, Sir, 1866-1955
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unknown - Public Domain
Jacobs, Friedrich, 1764-1847
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Richard Urquhart Goode - Public Domain
Goode, Richard Urquhart, 1858-1903
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Fergusson, James, 1808-1886
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Tusco - CC BY-SA 4.0
Broué, Pierre
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Krieghoff, Cornelius, 1815-1872
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Eeden, Marcel van 1965-
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Chambon, Émile, 1905-1993
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Erreka - Public Domain
Torrente Ballester, Gonzalo
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Constable, John, 1776-1837
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Rutherford, Samuel, 1600?-1661
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Abercromby, James, 1706-1781
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Solomon Farnham Kimball - Public Domain
Whitney, Helen Mar, 1828-1896
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Wilbraham, Roger, 1553-1616
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Anonymous -
Jacks, L.P. (Lawrence Pearsall), 1860-1955
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Daubenton, M. (Louis-Jean-Marie), 1716-1799
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Venable, William Henry, 1836-1920
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Staton, Dakota
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Tsukioka Yoshitoshi - Public Domain
Murasaki Shikibu, 978?-
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Hanson, Lars, 1887-1965
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Bissell, Clark, 1782-1857
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Rebecca Rex - CC BY 3.0
Wurman, Richard Saul, 1935-....
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Stephan G. Stephansson (Stephan Guðmundsson Stephansson), 1853-1927
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unknown - Public Domain
Bamford, Samuel, 1788-1872
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Mahaffy, J.P. (John Pentland), 1839-1919
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Depretis, Agostino, 1813-1887
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original uploader - CC BY 2.5
McGhee, Brownie, 1915-1996
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Yuval Yaron - CC BY-SA 3.0
Kosashvili, Dover, 1966-....
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Taylor, Robert, 1911-1969