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Biodiversity Heritage Library - Public Domain
Dylan--86 - CC BY-SA 3.0
Lambert after Pierre-Narcisse Guérin - Public Domain
Bassano Ltd (active 1901-1962) - Public Domain
Public Domain
original uploader - Public Domain
Jacobs, Konrad - CC BY-SA 2.0
Ottavio d'Albuzzi († 1855) - Public Domain
Gustav Borgen - Public Domain
*Lambert Weston (1806-95) or his son Sidney Weston (1842-93), see http://web.ukonline.co.uk/benjaminbeck/dissertation/6photographicportraiture.htm#N_53_). - Public Domain
Compilation - Public Domain
Kaldari - Public Domain
*:File:Cesar_chavez.jpg - CC BY 3.0
From Volume 2 (1895) of "The National Cyclopaedia of American Biography", published by James T. White and Company, New York City. - Public Domain
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Tunnell, James M. (James Miller), 1879-1957
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Biodiversity Heritage Library - Public Domain
Uhler, Philip R. (Philip Reese), 1835-1913
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Dylan--86 - CC BY-SA 3.0
Giorno, John
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Brooks, Erastus, 1815-1886
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Lambert after Pierre-Narcisse Guérin - Public Domain
Rey, Jean-Baptiste, 1734-1810
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Kőrösi Csoma, Sándor, 1784-1842
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Bassano Ltd (active 1901-1962) - Public Domain
Tree, Ronald, 1897-1976
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Public Domain
Libby, Lewis
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original uploader - Public Domain
Tynan, Katharine, 1861-1931
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Cable, John L. (John Levi), 1884-1971
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Titius, Johann Daniel, 1729-1796
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Jacobs, Konrad - CC BY-SA 2.0
Shannon, Claude Elwood, 1916-2001
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Wilke, Rudolf, 1873-1908
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Anconina, Richard, 1953-....
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Scranton, William Warren, 1917-2013
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Reynolds, Robert Rice, 1884-1963
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Ottavio d'Albuzzi († 1855) - Public Domain
Kerner, Justinus Andreas Christian, 1786-1862
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Gustav Borgen - Public Domain
Anker, Ella, 1870-1958
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Rutland, John James Robert Manners, Duke of, 1818-1906
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Wick, William W. (William Watson), 1796-1868
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*Lambert Weston (1806-95) or his son Sidney Weston (1842-93), see http://web.ukonline.co.uk/benjaminbeck/dissertation/6photographicportraiture.htm#N_53_). - Public Domain
Barry, John Wolfe, 1836-1918
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Coghlan, Frank
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Compilation - Public Domain
Johnson, Robert Underwood, 1853-1937
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Field, Eugene, 1850-1895
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Kaldari - Public Domain
Chapman, Marshall
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Smith, Marcus A. (Marcus Aurelius), 1851-1924
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*:File:Cesar_chavez.jpg - CC BY 3.0
Chavez, Cesar, 1927-1993
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Harris, Franklin Stewart, 1884-1960
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From Volume 2 (1895) of "The National Cyclopaedia of American Biography", published by James T. White and Company, New York City. - Public Domain
Jackson, James, 1819-1887
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Longfellow, Samuel, 1819-1892