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Anonymous - Public Domain
original uploader - Public Domain
w - Public Domain
J.B. ARRIEU ALBERTINI - Public Domain
Original uploader was :nl:Toth - Public Domain
Gage Skidmore - CC BY-SA 3.0
The Heart Truth - CC BY-SA 2.0
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unknown - Public Domain
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Anonymous - Public Domain
Wolfe, Ian, 1896-1992
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original uploader - Public Domain
Williams, Edward Christopher, 1871-1929
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w - Public Domain
Milanov, Zinka
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Lawley, Arthur, Sir, 1860-1932
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Desfontaines, René Louiche, 1750-1833
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J.B. ARRIEU ALBERTINI - Public Domain
Reggiani, Serge
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Fitzgerald, Edward, 1809-1883
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Anonymous - Public Domain
Cotogni, Antonio, 1831-1918
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Original uploader was :nl:Toth - Public Domain
Darwin, Francis, Sir, 1848-1925
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Gage Skidmore - CC BY-SA 3.0
Burton, Tim, 1958-....
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Lindley, Charles
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Ancillon, Charles, 1659-1715
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The Heart Truth - CC BY-SA 2.0
Tyson, Cicely
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Fountainhall, John Lauder, Lord, 1646-1722
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Moutschen, Joseph
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Stone, Robert King, 1822-1872
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Bergmann, Ernst von 1836-1907
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unknown - Public Domain
Blon, Franz von 1861-1945
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Kartveli, Alexander, 1896-1974
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Kustodiev, Boris Mikhaĭlovich, 1878-1927
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Lascurain Paredes, Pedro, 1858-1952
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Vecchi, Orazio, 1550-1605
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Ekier, Jan
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Seebeck, Thomas Johann, 1770-1831
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unknown - Public Domain
Wegner, Armin T., 1886-1978
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Seaver, Fred Jay, 1877-1970
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Skidelsky, Robert, 1939-
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Muḥammad ibn ʻAbd al-Wahhāb, 1703 or 4-1792
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Faucher, Léon, 1803-1854
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Teike, Carl, 1864-1922