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Jan Meyssens fecit exc - Public Domain
book author Paul S. Peterson, original photographer unknown - Public Domain
Franz Xaver Setzer - Public Domain
Harris & Ewing - Public Domain
Charles Balthazar Julien Févret de Saint-Mémin, 1770 -- 1852 - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
New York World-Telegram and the Sun staff photographer: Higgins, Roger, photographer. - Public Domain
Hitchcock54 - CC BY-SA 4.0
original uploader - CC BY 3.0
original uploader - Public Domain
unknown photographer - Public Domain
w:de:Benutzer:Bedrich - Public Domain
Kristin Dos Santos - CC BY-SA 2.0
(To be confirmed/sehr unsicher:) Hans Schickhardt (1512-1585) - Public Domain
unknown - Public Domain
Marrante - CC BY-SA 3.0
unknown - CC BY-SA 4.0
Maurin - Public Domain
U.S. Government Printing Office. - Public Domain
Allan warren - CC BY-SA 3.0
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Jan Meyssens fecit exc - Public Domain
Keyser, Hendrik de 1565-1621
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book author Paul S. Peterson, original photographer unknown - Public Domain
Stearns, Justus S. (Justus Smith), 1845-1933
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Franz Xaver Setzer - Public Domain
Schwarz, Vera, 1888-1964
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Harris & Ewing - Public Domain
Menoher, Charles Thomas, 1862-1930
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Charles Balthazar Julien Févret de Saint-Mémin, 1770 -- 1852 - Public Domain
Livingston, Henry Walter, 1768-1810
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Mathew Brady Levin Corot Handy - Public Domain
Stockton, John P. (John Potter), 1826-1900
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New York World-Telegram and the Sun staff photographer: Higgins, Roger, photographer. - Public Domain
Strömgren, Bengt (1908-1987).
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Hitchcock54 - CC BY-SA 4.0
Keeffe, Barrie, 1945-....
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Beam, Jacob D., 1908-....
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original uploader - CC BY 3.0
Manos, Constantine
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Canutt, Yakima, 1895-1986
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White, Henry Kirke, 1785-1806
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original uploader - Public Domain
Shaftesbury, Anthony Ashley Cooper, Earl of, 1671-1713
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unknown photographer - Public Domain
Bramé, Charlotte M., 1836-1884
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Edelfelt, Albert, 1854-1905
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Santa Fe Indian School
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w:de:Benutzer:Bedrich - Public Domain
Maestlin, Michael, 1550-1631
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Kristin Dos Santos - CC BY-SA 2.0
Jones, Cherry, 1956-....
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Erickson, John Edward, 1863-1946
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(To be confirmed/sehr unsicher:) Hans Schickhardt (1512-1585) - Public Domain
Schegk, Jakob, 1511-1587
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unknown - Public Domain
Klaproth, Julius von, 1783-1835
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Marrante - CC BY-SA 3.0
Kiwitz, Heinz, 1910-1938
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Wilson, Glenn D. (Glenn Daniel)
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unknown - CC BY-SA 4.0
Gutenberg, Beno, 1889-1960
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Maurin - Public Domain
Arago, Jacques, 1790-1855
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U.S. Government Printing Office. - Public Domain
Mize, Chester L. (Chester Louis), 1917-1994
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Allan warren - CC BY-SA 3.0
Sutherland, Joan, 1926-2010
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MacArthur, Douglas, 1909-
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Bonvalot, Gabriel, 1853-1933
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unknown - Public Domain
Nubar, Pasha, 1825-1899