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Julian Vannerson - Public Domain
Tormay, Cecile - Public Domain
unknown - Public Domain
Public Domain
Arthur Henry Adams (1872-1936) - Public Domain
anonymous - Public Domain
Kevin Bryant - Public Domain
enormospenner - CC BY 2.0
Lubos Motl, Lumidek - CC BY 3.0
Patrice Gilbert - CC BY-SA 3.0
Politikundtheorie - CC BY-SA 4.0
Painting by unidentified artist - Public Domain
Autore anonimo. Opera di Conrad Marca-Relli -
Daguerreotype collection (Library of Congress) - Public Domain
Unknown - Public Domain
Gordon Parks, Office of War Information - Public Domain
P. Krieger - Public Domain
Image from Wikimedia Commons
Julian Vannerson - Public Domain
Bocock, Thomas S., 1815-1891
Image from Wikimedia Commons
Tormay, Cecile - Public Domain
Kun, Béla, 1886-1939
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unknown - Public Domain
Doddridge, Philip, 1773-1832
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Public Domain
Bond, Frederick Bligh, 1864-1945
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Arthur Henry Adams (1872-1936) - Public Domain
Adams, Arthur H. (Arthur Henry), 1872-1936
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Wyczółkowski, Leon, 1852-1936
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unknown - Public Domain
Capron, Horace, 1804-1885
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Dufour, Guillaume Henri, 1787-1875
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anonymous - Public Domain
Bridie, James, 1888-1951
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Kevin Bryant - Public Domain
Smith, Albert, 1816-1860
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Field, John, 1782-1837
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Gratiot, Charles, 1786-1855
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enormospenner - CC BY 2.0
Walker, Murray, 1923-
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Dyson, Ruth, 1957-
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Lubos Motl, Lumidek - CC BY 3.0
Jaffe, Arthur, 1937-....
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Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716
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Patrice Gilbert - CC BY-SA 3.0
Naylor, Phyllis Reynolds
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Public Domain
Bradley, Mark E. (Mark Edward), 1907-
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Verster, Floris, 1861-1927
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Politikundtheorie - CC BY-SA 4.0
Brown, Wendy, 1955-....
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Painting by unidentified artist - Public Domain
Pierné, Gabriel, 1863-1937
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Guillard, Nicolas-François, 1752-1814
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Szigeti, Joseph
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Autore anonimo. Opera di Conrad Marca-Relli -
Marca-Relli, Conrad, 1913-2000
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Tupper, Ellen Smith, 1822-1888
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Daguerreotype collection (Library of Congress) - Public Domain
Hitchcock, Ethan Allen, 1798-1870
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Hardwicke, Charles Philip Yorke, Earl of, 1799-1873
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Unknown - Public Domain
Abbadie, Jacques, 1654-1727
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Gordon Parks, Office of War Information - Public Domain
Stewart, Rex, 1907-1967
Image from Wikimedia Commons
P. Krieger - Public Domain
Pohl, Richard (1826-1896).