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unknown - Public Domain
Piermario Ciani, mailartist (deceased) - CC BY-SA 4.0
Nancy Wong - CC BY-SA 3.0
sf2000 - Public Domain
Frankie Fouganthin - CC BY-SA 3.0
Hal Jespersen - Public Domain
Nadar - Public Domain
Bain News Service, publisher - Public Domain
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Public Domain
Cardigan, James Thomas Brudenell,, Earl of, 1797-1868
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unknown - Public Domain
Herzog, Eduard, 1841-1924
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Public Domain
Sykes, Frederick Hugh, Sir, 1877-1954
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Maurois, André, 1885-1967
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Piermario Ciani, mailartist (deceased) - CC BY-SA 4.0
Baroni, Vittore
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Ettingshausen, Andreas von 1796-1878
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Arnauld, Antoine, 1612-1694
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Nancy Wong - CC BY-SA 3.0
Mori, Toshio, 1910-
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Pavel, Ota, 1930-
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Baldwin, Alec, 1958-....
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sf2000 - Public Domain
Ibn Migash, Joseph ben Meir, ha-Levi, 1077-1141
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Afonso V, King of Portugal, 1432-1481
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Temple, Richard Grenville-Temple, Earl, 1711-1779
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Frankie Fouganthin - CC BY-SA 3.0
Hamilton, Carl
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Cruz, María de la, 1912-
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Niemeyer, Felix von, 1820-1871
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Brooks, Rodney Allen.
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Hal Jespersen - Public Domain
Lane, James Henry, 1833-1907
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New, John C. (John Chalfant), 1831-1906
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Peabody, James Hamilton, 1852-1917
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Nadar - Public Domain
Le Roux,Charles
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MacNider, Hanford, 1889-1968
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Kalley, Robert Reid, 1809-1888
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Burt, Laura, -1952
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Léger, Jacques Nicolas, 1859-1918
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Bain News Service, publisher - Public Domain
O'Reilly, Robert M. (Robert Maitland), 1845-1912
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Schmiedeberg, Oswald, 1838-1921
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Pinchot, Rosamond, 1904-1938
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McCulloch, William M.
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Seeliger, Hugo von 1849-1924