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U.S. Army - Public Domain
Unknown. Collection Georges Sirot. - Public Domain
Supercomputer12 - CC BY-SA 3.0
Author - Dr. Jeff Mozzochi (passed copyright for the photo to owner - professor Robert Phelan Langlands) -
unknown - Public Domain
Balázs Árpádné Malovecz Ágnes - CC BY-SA 4.0
Emery Walker - Public Domain
Phd0 - CC BY-SA 3.0
Public Domain
Josef Kriehuber - Public Domain
after Unknown artist - Public Domain
:de:Emile Wauters - Public Domain
R. Page - Public Domain
Jack Speer -
Joseguztorres - CC BY-SA 3.0
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U.S. Army - Public Domain
Lutes, Leroy, 1890-1980
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Alma-Tadema, Lawrence, 1836-1912
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Unknown. Collection Georges Sirot. - Public Domain
Audouard, Olympe, 1830-1890
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Supercomputer12 - CC BY-SA 3.0
Ayers, William, 1944-....
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Author - Dr. Jeff Mozzochi (passed copyright for the photo to owner - professor Robert Phelan Langlands) -
Langlands, Robert P., 1936-
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unknown - Public Domain
Minor, Osip Solomonovich, 1861-1933
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Balázs Árpádné Malovecz Ágnes - CC BY-SA 4.0
Ferencsik, János
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Eckert, Fred J., 1941-
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unknown - Public Domain
Rickert, Heinrich, 1863-1936
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Emery Walker - Public Domain
Allingham, William, 1824-1889
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Phd0 - CC BY-SA 3.0
Berteloot, Jean-Yves
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Public Domain
Cilley, Joseph, 1791-1887
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Josef Kriehuber - Public Domain
Gyrowetz, Adalbert
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Adair, Robert, Sir, 1763-1855
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after Unknown artist - Public Domain
Weldon, Anthony, Sir, -1649?
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Starkings, Richard
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unknown - Public Domain
Pilʹni︠a︡k, Boris, 1894-1937
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Public Domain
Baumler, Albert John, 1914-1973
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unknown - Public Domain
Baldwin, John, 1799-1884
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Public Domain
Chambers, Washington Irving, 1856-1934
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:de:Emile Wauters - Public Domain
Bleichröder, Gerson von, 1822-1893
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R. Page - Public Domain
Rokeby, Matthew Robinson-Morris,, Baron, 1713-1800
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Jack Speer -
Speer, Jack
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Blathwayt, William, 1649?-1717
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Joseguztorres - CC BY-SA 3.0
Cazals, Felipe, 1937-....
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McGill, James, 1744-1813
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Phillips, Thomas, 1801-1867
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Medici, Don Pietro De'
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Cockburn, John A. (John Alexander), Sir, 1850-1929
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Aguirre, Michael J. (Michael Jules), 1949-