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Felice Beato - Public Domain
unknown - Public Domain
US Government Printing Office - Public Domain
John Hoppner - Public Domain
Anonymous - Public Domain
unknown -
Daniel Läpple - Public Domain
Magazine article illustration - Public Domain
Thomas de Leu - Public Domain
Amrei-Marie - CC BY-SA 3.0
Gundolf Barenthin - Originalaufnahme gehört Urenkel Reinhart Müller, Schleswig - CC BY-SA 3.0
Petermowforth - CC BY-SA 3.0
Florida Supercon - CC BY 2.0
Richard James Lane - Public Domain
w - Public Domain
Orderinchaos - CC BY-SA 3.0
original uploader - Public Domain
George P. A. Healy - CC BY-SA 3.0
Georges Seguin (Okki - CC BY-SA 3.0
Christian Reed - CC BY-SA 2.0
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Arnold, Peleg, 1751-1820
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Webb, C. Locock (Charles Locock), 1822-1898
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Felice Beato - Public Domain
Alcock, Rutherford, Sir, 1809-1897
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unknown - Public Domain
Hertel, Johann Wilhelm, 1727-1789
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Candèze, E. C. (Ernest Charles), 1827-1898
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unknown - Public Domain
Prezzolini, Giuseppe, 1882-1982
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US Government Printing Office - Public Domain
Fithian, Floyd James, 1928-
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John Hoppner - Public Domain
Murray, George, Sir, 1772-1846
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Anonymous - Public Domain
Boucher, Hélène 1908-1934
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unknown -
Harrison, H. C. A. (Henry Colden Antill), 1836-1929
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unknown - Public Domain
Methuen, Algernon, 1856-1924
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Daniel Läpple - Public Domain
Delbrück, M. (Max), 1850-1919
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Magazine article illustration - Public Domain
Hooper, Stanford Caldwell, 1884-1955
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Tischbein, Johann Heinrich Wilhelm, 1751-1829
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Thomas de Leu - Public Domain
Bourbon, Charles, duc de, 1490-1527
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Kennedy, Joseph W. (Joseph William), 1916-1957
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Oberth, Hermann, 1894-1989
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Amrei-Marie - CC BY-SA 3.0
Shakespeare, Nicholas, 1957-....
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Gundolf Barenthin - Originalaufnahme gehört Urenkel Reinhart Müller, Schleswig - CC BY-SA 3.0
Müller, Hermann, 1829-1883
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Petermowforth - CC BY-SA 3.0
Michie, Donald
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Florida Supercon - CC BY 2.0
Kenny, Tom (Thomas J.)
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Richard James Lane - Public Domain
Horsley, William, 1774-1858
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w - Public Domain
Smith, Hyrum Gibbs, 1879-1932
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Orderinchaos - CC BY-SA 3.0
Battye, J. S. (James Sykes), 1871-
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original uploader - Public Domain
Putlitz, Gustav Heinrich Gans, Edler Herr von und zu, 1821-1890
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George P. A. Healy - CC BY-SA 3.0
Lawrence, Abbott, 1792-1855
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Georges Seguin (Okki - CC BY-SA 3.0
Zeitoun, Ariel, 1945-....
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Hensel, Paul Hugo Wilhelm, 1860-1930
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original uploader - Public Domain
Carlyle, Alexander, 1722-1805
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Christian Reed - CC BY-SA 2.0
Wells, Emily