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Public Domain
Jahresbericht der Deutschen Mathematiker-Vereinigung 1915 - Public Domain
Charles Ch. (lithographer) - Public Domain
Wikinick - CC BY-SA 4.0
Reproduction photomécanique d'une gravure de M. H., d'après un dessin de Corrabeuf - Public Domain
John Hall - Public Domain
Canada. Patent and Copyright Office / Bureau des brevets et du droit d'auteur; Library and Archives Canada / Bibliothèque et Archives Canada; PA-195870. - CC BY 2.0
United States Senate - Public Domain
user at project -
Www3cubed - CC BY 3.0
Arnaud 25 - Public Domain
Alessio Sbarbaro - CC BY-SA 2.5
NBC - Public Domain
William Stainton Moses - Public Domain
H. de Lambilly - CC BY-SA 3.0
not known - taken from the book "History of England" - Public Domain
Unknown photographer for the Otto Sarony Company - Public Domain
Uyvsdi - CC BY-SA 3.0
Charlie Chaplin - Public Domain
Matti Á. - CC BY-SA 2.0
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Public Domain
Palmer, Edward, 1829-1911
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Newell, Peter, 1862-1924
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Jahresbericht der Deutschen Mathematiker-Vereinigung 1915 - Public Domain
Burkhardt, Heinrich, 1861-1914
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Charles Ch. (lithographer) - Public Domain
Méric-Lalande, Henriette 1798 or 1799-1867
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Wikinick - CC BY-SA 4.0
Rouch, Jean
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Reproduction photomécanique d'une gravure de M. H., d'après un dessin de Corrabeuf - Public Domain
Vix, Geneviève 1879-1939
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John Hall - Public Domain
Scott, John, 1731-1783
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Canada. Patent and Copyright Office / Bureau des brevets et du droit d'auteur; Library and Archives Canada / Bibliothèque et Archives Canada; PA-195870. - CC BY 2.0
Davin, Nicholas Flood, 1843-1901
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Public Domain
Mendele Mokher Sefarim, 1835-1917
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Duyckinck, George L. (George Long), 1823-1863
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United States Senate - Public Domain
Taft, Robert A. (Robert Alphonso), 1889-1853
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Ashley, April, 1935-
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user at project -
Conti, Tom
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Levine, Donald Nathan, 1931-....
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Www3cubed - CC BY 3.0
Simon, Herbert A. (Herbert Alexander), 1916-2001
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Arnaud 25 - Public Domain
Chardonnet, Hilaire de, 1839-1924
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Frank, Augustus
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Alessio Sbarbaro - CC BY-SA 2.5
Sciutti, Graziella
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Kosygin, Aleksey Nikolayevich, 1904-1980
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NBC - Public Domain
Brenner, David, 1945-
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Noailles, Emmanuel Henri Victurnien, 1830-1909
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William Stainton Moses - Public Domain
Moses, Stainton
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H. de Lambilly - CC BY-SA 3.0
Jaubert, Hippolyte-François, comte, 1798-1874
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not known - taken from the book "History of England" - Public Domain
Popham, Edward, 1610?-1651
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Unknown photographer for the Otto Sarony Company - Public Domain
Fiske, Harrison Grey, 1861-1942
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Buckland, William, 1734-1774
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Uyvsdi - CC BY-SA 3.0
Jones, Ruthe Blalock, 1939-
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Charlie Chaplin - Public Domain
Murray, Tom, 1874-1935
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Hart, William, 1823-1894
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Matti Á. - CC BY-SA 2.0
Barker, Dan.