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published by Joseph Gaston - Public Domain
Nv8200p - CC BY-SA 3.0
Jan Chełmiński - Public Domain
Bain - Public Domain
Harshberger, John W. (John William), 1869-1929 -
Jojodark - CC BY-SA 3.0
NASA - Public Domain
unknown - Public Domain
Billy Hathorn - Public Domain
Henry Benjamin Meigs (Born 1844) - Public Domain
Not known. Photo is held by the Dominican order in Belgium - CC BY-SA 2.5
Mathew Brady or Levin Handy - Public Domain
matteomerletto - CC BY-SA 2.0
Robert C. Clark Photo - CC BY-SA 4.0
Frances Benjamin Johnston - Public Domain
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Lea, Isaac, 1792-1886
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published by Joseph Gaston - Public Domain
Applegate, O. C. (Oliver Cromwell), 1845-1938
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Nv8200p - CC BY-SA 3.0
Gordon, Jaimy, 1944-....
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Jan Chełmiński - Public Domain
Chelmiński, Jan V., 1851-1925
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Bain - Public Domain
Ellis, Mary, 1900-2003
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Liljefors, Bruno Andréas, 1860-1939
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Harshberger, John W. (John William), 1869-1929 -
McIlvaine, Charles, 1840-1909
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Dorset, Richard Sackville, Earl of, 1589-1624
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Sutherland, George Granville Leveson-Gower, Duke of, 1758-1833
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Rücker, A. W. (Arthur William), 1848-1915
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Jojodark - CC BY-SA 3.0
Reyes, Alina
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Miller, William H. H. (William Henry Harrison), 1840-1917
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NASA - Public Domain
Cleave, Mary Louise
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unknown - Public Domain
Steffen, Hans, 1865-1936
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Billy Hathorn - Public Domain
McDonald, William Jesse, 1852-1918
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Henry Benjamin Meigs (Born 1844) - Public Domain
Meigs, Henry, 1782-1861
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Not known. Photo is held by the Dominican order in Belgium - CC BY-SA 2.5
Pire, Dominique, 1910-1969
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Müller, Johannes von, 1752-1809
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unknown - Public Domain
Ebert, Adolf, 1820-1890
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Mathew Brady or Levin Handy - Public Domain
Harris, Ira, 1802-1875
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matteomerletto - CC BY-SA 2.0
Bates, Kathy, 1948-....
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Velikovsky, Immanuel, 1895-1979
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Robert C. Clark Photo - CC BY-SA 4.0
Poland, Thomas M., 1949-
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unknown - Public Domain
Brandon, Gerard Chittocque, 1788-1850
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Condé, Louis, prince de, 1621-1686
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Cain, Dean
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Becquerel, Ed., 1820-1891
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Friedrich Wilhelm, Elector of Brandenburg, 1620-1688
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unknown - Public Domain
Boudinot, Elias C. (Elias Cornelius), 1835-1890
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Frances Benjamin Johnston - Public Domain
Boyce, Neith, 1872-1951