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Thomas William Herringshaw, author. Published by American Publishers' Association, Chicago. - Public Domain
Elen Nivrae - CC BY 2.0
Trabajo propio. Reproducción de una fotografía de un retrato al óleo del siglo XIX. - Public Domain
:en:Stephen Pearce - Public Domain
Esselte - Public Domain
Gage Skidmore - CC BY-SA 3.0
Rsabbatini - Public Domain
Willis Kent Productions - Public Domain
Anna Davis Hallowell and Lucretia Mott - Public Domain
Mathew Brady - Public Domain
Unknown engraver. Copy by Richard H. Pease (1813-1891), lithographer of Albany, New York. - Public Domain
Igbochild - CC BY 3.0
Pturnley - CC BY-SA 3.0
unknown - Public Domain
Adolf Dauthage Foto: :de:Peter Geymayer - Public Domain
Willem van de Poll - CC BY-SA 3.0
Ternu (engraver) after Francisque-Joseph Duret - Public Domain
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Becker, George F. (George Ferdinand), 1847-1919
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Thomas William Herringshaw, author. Published by American Publishers' Association, Chicago. - Public Domain
Ray, George W. (George Washington), 1844-1925
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Fredericks, John Donnan, 1869-1945
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Elen Nivrae - CC BY 2.0
Friedkin, William, 1935-
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Trabajo propio. Reproducción de una fotografía de un retrato al óleo del siglo XIX. - Public Domain
Echenique, José Rufino, 1808-1887
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:en:Stephen Pearce - Public Domain
Osborn, Sherard, 1822-1875
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Frey-Wyssling, Albert
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Cobb, Thomas Read Rootes, 1823-1862
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Esselte - Public Domain
Gasser, Herbert S. (Herbert Spencer), 1888-1963
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Ömer Lûtfi Pasa 1806-1871
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Gage Skidmore - CC BY-SA 3.0
Medved, Michael.
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Rsabbatini - Public Domain
Derby, Orville A. (Orville Adelbert), 1851-1915
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Willis Kent Productions - Public Domain
Page, Paul, 1903-1974
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Debret, Jean-Baptiste, 1768-1848
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Courbet, Gustave, 1819-1877
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Anna Davis Hallowell and Lucretia Mott - Public Domain
Mott, James, 1788-1868
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Babeuf, Gracchus, 1760-1797
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Mathew Brady - Public Domain
Haldeman, R. J. (Richard Jacobs), 1831-1886
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Unknown engraver. Copy by Richard H. Pease (1813-1891), lithographer of Albany, New York. - Public Domain
Gold, Thomas Ruggles, 1764-1827
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Igbochild - CC BY 3.0
Smith, Ernie
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Pturnley - CC BY-SA 3.0
Turnley, Peter.
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Lapointe, Ernest, 1876-1941
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unknown - Public Domain
Adamson, William Charles, 1854-1929
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Tallis, Thomas, approximately 1505-1585
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Croix, Carlos Francisco de Croix, marqués de, 1699-1786
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Adolf Dauthage Foto: :de:Peter Geymayer - Public Domain
Redtenbacher, Joseph, 1810-1870
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Neilson, John Shaw, 1872-1942
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Pasternak, Boris Leonidovich, 1890-1960
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Willem van de Poll - CC BY-SA 3.0
Helfrich, Conrad E. L. (Conrad Emile Lambert), 1886-1962
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Ternu (engraver) after Francisque-Joseph Duret - Public Domain
Batton, D. A. (Désiré Alexandre), 1798-1855