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w - Public Domain
Hoppyh - CC BY-SA 4.0
Public Domain
anonymous - Public Domain
Georges Biard - CC BY-SA 3.0
Peter Lely - Public Domain
Henry Hudson, after George Romney - Public Domain
Professor Wilson. 1874 - Public Domain
unknown - Public Domain
Charles Nelson Kent, Henry O. Kent - Public Domain
Ambrose Tardieu - Public Domain
Max Halberstadt -
Too Tall Paul - CC BY 2.0
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w - Public Domain
Richards, Stephen L.
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Hoppyh - CC BY-SA 4.0
Harrison, J. Hartwell (John Hartwell), 1909-1984
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Hein, Christoph, 1944-....
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Carriès, Jean (1855-1894).
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Quinton, Amelia S. (Amelia Stone), 1835?-1926
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Abert, J. W. (James William), 1820-1897
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Public Domain
Hamlett, Barksdale, 1908-
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Atlantis (Space shuttle)
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Patterson, Robert, 1792-1881
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anonymous - Public Domain
Southey, Richard, Sir, 1808-1901
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Dulac, Germaine, 1882-1942
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Ching, Cyrus S. (Cyrus Stuart), 1876-1967
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Georges Biard - CC BY-SA 3.0
Scott-Thomas, Kristin, 1960-....
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Peter Lely - Public Domain
Holmes, Robert, Sir, 1622-1692
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Henry Hudson, after George Romney - Public Domain
Henniker, John Henniker-Major, Baron, 1752-1821
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O'Connor, Francisco Burdett, 1791-1871
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Harrison, Leland, 1883-1951
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Buchanan, George, Sir, 1854-1924
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Talma, François Joseph, 1763-1826
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Professor Wilson. 1874 - Public Domain
Ainslie, Robert, 1766-1838
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unknown - Public Domain
Rinaldi, Susana
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Charles Nelson Kent, Henry O. Kent - Public Domain
Ramsdell, George A. (George Allen), 1834-1900
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Campbell, James, 1949-
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Ambrose Tardieu - Public Domain
Ampére, André-Marie, 1775-1836
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Reeves, John, 1752?-1829
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Max Halberstadt -
Freud, Sigmund, 1856-1939
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Escobar, Vicente, 1757-1854
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Maris, Matthijs, 1839-1917
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unknown - Public Domain
Bamford, Samuel, 1788-1872
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Too Tall Paul - CC BY 2.0
George, Dan, 1899-1981