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Kingh81 - CC BY-SA 3.0
The Nobel Foundation - Public Domain
Warren K. Leffler, U.S. News & World Report Magazine; Restored by Adam Cuerden - Public Domain
Dontworry - CC BY-SA 3.0
Hugo van Gelderen / Anefo - CC0 1.0
unknown - Public Domain
unknown photographer - CC BY-SA 4.0
Y Drych - Public Domain
Relative of Leicester17 - Public Domain
Richard Dighton - Public Domain
Azcarlos2 - CC BY-SA 3.0
Thomon - Public Domain
Public Domain
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Escobedo, Mariano, 1826-1902
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Kingh81 - CC BY-SA 3.0
Peregrine, Peter N. (Peter Neal), 1963-
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The Nobel Foundation - Public Domain
Whipple, George Hoyt, 1878-1976
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Otis, Eliza A., 1833-1904
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Warren K. Leffler, U.S. News & World Report Magazine; Restored by Adam Cuerden - Public Domain
Hamer, Fannie Lou, 1917-1977
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Dontworry - CC BY-SA 3.0
Pepper, Beverly
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Hugo van Gelderen / Anefo - CC0 1.0
Lopez, Trini
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Routh, Martin Joseph, 1755-1854
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Atef, Emily, 1973-....
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Hare, Augustus William, 1792-1834
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unknown - Public Domain
Zumaya, Manuel de, approximately 1678-1755
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Phillips, Sonny
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unknown photographer - CC BY-SA 4.0
Achterberg, Gerrit, 1905-1962
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Rethel, Alfred, 1816-1859
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Y Drych - Public Domain
Lewis, Saunders, 1893-1985
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Relative of Leicester17 - Public Domain
Politi, Leo, 1908-1996
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Hawley, Steven A., 1951-
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unknown - Public Domain
Alessandri, Arturo, 1868-1950
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Richard Dighton - Public Domain
Dighton, Richard, 1795-1880
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Azcarlos2 - CC BY-SA 3.0
Llave, Ignacio de la, 1818-1863
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unknown - Public Domain
Ritchie, Thomas, 1778-1854
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Thomon - Public Domain
Massimi, Massimo, 1877-1954
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Rosenthal, Arthur, 1887-1959
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unknown - Public Domain
Irwin, William Wallace, 1803-1856
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Laugel, Auguste, 1830-1914
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unknown - Public Domain
Bayer, Joseph, 1852-1913
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Public Domain
Cutler, Manasseh, 1742-1823
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Douglas, Stan, 1960-....
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Proctor, Redfield, 1831-1908
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Gurwood, John, 1790-1845