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Mathew Brady Levin Corot Handy - Public Domain
unknown - Public Domain
Unknown or not provided - Public Domain
J.M.N. Frémy (graveur), d'après un tableau de Roland (peintre). - Public Domain
Public Domain
Julius Schaarwächter - Public Domain
Tabercil - CC BY-SA 3.0
Anefo - CC0 1.0
Leif Ørnelund - CC BY-SA 4.0
(To be confirmed/sehr unsicher:) Hans Schickhardt (1512-1585) - Public Domain
sfllaw - CC BY-SA 2.0
w:Martin Archer Shee - Public Domain
Maull? Subscript not clear -
Alpra ArazeL - CC BY-SA 4.0
US Government Printing Office - Public Domain
MGM Studios - Public Domain
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Mathew Brady Levin Corot Handy - Public Domain
Phelps, William Walter, 1839-1894
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unknown - Public Domain
Auer v. Welsbach, Carl (Auer von Welsbach), 1858-1929
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unknown - Public Domain
Rosher, Charles, 1885-1974
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Unknown or not provided - Public Domain
Knight, Goodwin, 1896-1970
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J.M.N. Frémy (graveur), d'après un tableau de Roland (peintre). - Public Domain
Tronchet, François Denis 1726-1806
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Wigforss, Ernst, 1881-1977
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Public Domain
Cheney, Person Colby, 1828-1901
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Alfaro, Ricardo J. (Ricardo Joaquín), 1882-1971
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Riedel, Hermann, 1847-1913
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unknown - Public Domain
Kölliker, Albert 1817-1905
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Ellis, George Edward, 1814-1894
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Molson, John, 1763-1836
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Julius Schaarwächter - Public Domain
Wilhelmj, August, 1845-1908
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Tabercil - CC BY-SA 3.0
Brown, Chester, 1960-....
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unknown - Public Domain
Barradas Pérez-Barradas, Carmen, 1888-1963
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White Bull, Joseph, 1849-1947
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Le Bon, Joseph, 1765-1795
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Pease, Alfred E. (Alfred Edward), Sir, 1857-1939
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Mattoon, Ebenezer, 1755-1843
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Anefo - CC0 1.0
Verbong, Ben, 1949-
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Philpot, Glyn, 1884-1937
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Leif Ørnelund - CC BY-SA 4.0
Zachariassen, Aksel
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(To be confirmed/sehr unsicher:) Hans Schickhardt (1512-1585) - Public Domain
Schegk, Jakob, 1511-1587
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sfllaw - CC BY-SA 2.0
Allen, Anita L., 1953-....
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w:Martin Archer Shee - Public Domain
Sumner, Charles Richard, 1790-1874
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Maull? Subscript not clear -
Griffith, Richard John, Sir, 1784-1878
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Alpra ArazeL - CC BY-SA 4.0
Bodmer, Martin, 1899-1971
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US Government Printing Office - Public Domain
McSpadden, Clem, 1925-2008
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MGM Studios - Public Domain
Powell, Jane, 1929-....
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Harvey, D. W. (Daniel Whittle), 1786-1863