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unknown - Public Domain
dce_76 - CC BY 2.0
Thwaites, York - Public Domain
GFHund - CC BY 3.0
after Cornelis Janssens van Ceulen - Public Domain
U.S. Congress - Public Domain
Bromley - Public Domain
Harris & Ewing - Public Domain
John Singleton Copley - Public Domain
Nightscream - CC BY 3.0
Manfredi Gioacchini - CC BY-SA 4.0
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unknown - Public Domain
Purman, William James, 1840-1928
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Berckheyde, Job Adriaenszoon
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Gottlieb, Carl.
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Smith, Grace Cossington
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Cross, Richard Assheton, 1823-1914
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dce_76 - CC BY 2.0
Allen, Joan, 1956-...
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Thwaites, York - Public Domain
Noble, T. Tertius (Thomas Tertius), 1867-1953.
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GFHund - CC BY 3.0
Minkowski, Rudolf 1895-1976
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Dudley, Robert, Sir, 1574-1649
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after Cornelis Janssens van Ceulen - Public Domain
Digges, Dudley, Sir, 1583-1639
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unknown - Public Domain
Phillips, Stephen C. (Stephen Clarendon), 1801-1857
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U.S. Congress - Public Domain
Capps, Walter H.
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Lockwood, Frank, Sir, 1846-1897
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Locke, Alain, 1885-1954
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Bromley - Public Domain
Shebbeare, John, 1709-1788
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Bottineau, Pierre, 1817-1895
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Huntington, Ebenezer, 1754-1834
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Gilmour, John, 1605?-1671
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Harris & Ewing - Public Domain
Kennan, George F. (George Frost), 1904-2005
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Boltanski, Christian, 1944-....
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Müller, Wilhelm, 1794-1827
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Carter, Rosalynn, 1927-2023
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Leonard, John Edwards, 1845-1878
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unknown - Public Domain
Gogh, Theo van 1857-1891
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Richardson, Hugh, 1905-2000
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Geminiani, Francesco, 1687-1762
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John Singleton Copley - Public Domain
Warren, Mercy Otis, 1728-1814
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Nightscream - CC BY 3.0
Quesada, Joe.
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Cline, Edward, 1892-1961
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Manfredi Gioacchini - CC BY-SA 4.0
Bengston, Billy Al