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unknown - Public Domain
uploaded by Flask - Public Domain
Herr uebermann - CC BY-SA 3.0
Bauderon Louis Jules (1809-1870) - Public Domain
Leonhard Gey - Public Domain
John Brewster, Jr. - Public Domain
The copyright lied with the Historische Museum Frankfurt (Historical Museum of Frankfurt) which kindly released the file under a cc-by-sa during GLAM on Tour Frankfurt 2018. - CC BY-SA 4.0
Grentidez - CC0 1.0
Nadar - Public Domain
George Edward Anderson's Studio - Public Domain
Jean Baptiste van Loo - Public Domain
Hpschaefer - CC BY-SA 3.0
Public Domain
Edwardx - CC BY-SA 4.0
Alan Light - CC BY 2.0
Hchristophersen - CC BY-SA 3.0
Unknown engraver - Public Domain
Andrew Russeth - CC BY-SA 2.0
unknown photographer - Public Domain
US Government Printing Office - Public Domain
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unknown - Public Domain
Whipple, Amiel Weeks, 1817?-1863
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uploaded by Flask - Public Domain
Henty, G.A. (George Alfred), 1832-1902
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Palladio, Andrea, 1508-1580
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Herr uebermann - CC BY-SA 3.0
Angeles, Victoria de los
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Bauderon Louis Jules (1809-1870) - Public Domain
Saint-Priest, François-Emmanuel Guignard, comte de, 1735-1821
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Leonhard Gey - Public Domain
Schnorr von Carolsfeld, Julius, 1794-1872
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John Brewster, Jr. - Public Domain
Bidwell, Barnabas, 1763-1833
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The copyright lied with the Historische Museum Frankfurt (Historical Museum of Frankfurt) which kindly released the file under a cc-by-sa during GLAM on Tour Frankfurt 2018. - CC BY-SA 4.0
Sender, Toni, 1888-1964
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Grentidez - CC0 1.0
Páez, Pedro, 1564-1622
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unknown - Public Domain
Schertzinger, V.
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Warburton, William, 1698-1779
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Herger, Wally, 1945-
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Nadar - Public Domain
Littré, Émile, 1801-1881
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George Edward Anderson's Studio - Public Domain
Anderson, George Edward, 1860-1928
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Jean Baptiste van Loo - Public Domain
Mansfield, William Murray, Earl of, 1705-1793
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Meulen, Henry
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Fouquet, Jean, approximately 1420-approximately 1480
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Hpschaefer - CC BY-SA 3.0
Burgin, Victor.
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Public Domain
Watson, James, 1750-1806
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Edwardx - CC BY-SA 4.0
Goossens, Sidonie
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Alan Light - CC BY 2.0
Cronyn, Hume
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Lutgardis, Saint, 1182-1246
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Hchristophersen - CC BY-SA 3.0
Camre, Mogens
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Gallén-Kállela, Akseli (1865-1931).
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Unknown engraver - Public Domain
Bacon, Leonard, 1802-1881
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unknown - Public Domain
Smith, William, 1816-1896
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Andrew Russeth - CC BY-SA 2.0
Enwezor, Okwui.
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unknown photographer - Public Domain
Richmond, Nancy Heywood, 1820-1898
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US Government Printing Office - Public Domain
Young, Edward Lunn, 1920-
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Budberg, Moura.