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unknown - Public Domain
Constance Mayer - Public Domain
Nobel Foundation -
engraved by W. Delff after a painting by C. Duyster - Public Domain
user at project - Public Domain
Ludwik Szacinski - CC BY-SA 3.0
Public Domain
Brumurph - CC BY-SA 4.0
original uploader - Public Domain
anonymous - Public Domain
Linda Janakos - CC BY 3.0
Ernest Edwards - Public Domain
Mathew Brady - Public Domain
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Stukeley, William, 1687-1765
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Mason, Hugh, 1820-1886
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unknown - Public Domain
Penn, Alexander, 1906-1972
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Constance Mayer - Public Domain
Ernouf, Jean-Augustin 1753-1827
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unknown - Public Domain
Hellins, John, -1827
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Nobel Foundation -
Karrer, Paul, 1889-1971
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Carmichael, Franklin, 1890-1945
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Appleton, Daniel, 1785-1849
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Byrne, Joe, 1856-1880
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Gordon, Richard
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Gotch, Francis 1853-1913
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engraved by W. Delff after a painting by C. Duyster - Public Domain
Delmedigo, Joseph Solomon, 1591-1655
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user at project - Public Domain
Shemuʼelevits, Ḥayim, 1901-1979
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Loveless, Patty
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Ludwik Szacinski - CC BY-SA 3.0
Gronvold, Hans Aimar Mow
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unknown - Public Domain
Weisbach, Julius Ludwig, 1806-1871
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Platt, Edward
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Fustel de Coulanges, 1830-1889
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Roberts, Michael, 1902-1948
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unknown - Public Domain
Sharman, Bill, 1926-2013
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Catrik, John, -1419
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Public Domain
Hawes, Harry Bartow, 1869-1947
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Brumurph - CC BY-SA 4.0
Bouwsma, O. K.
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Ware, Henry, 1764-1845
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original uploader - Public Domain
Shulze, John Andrew, 1775-1852
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anonymous - Public Domain
Seawell, Molly Elliot, 1860-1916
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Linda Janakos - CC BY 3.0
Robbins, Doren
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Ernest Edwards - Public Domain
Woodward, B. B. (Bernard Bolingbroke), 1816-1869
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McIntosh, David Gregg, 1836-1916
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Mathew Brady - Public Domain
Spaulding, E. G. (Elbridge Gerry), 1809-1897