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Repro: Albert H. Payne († 1902) - Public Domain
Rabanus Flavus - Public Domain
Alexandre Séon - Public Domain
Portrait by Hallwig. - Public Domain
Yves Tennevin - CC BY-SA 3.0
Helga Paasche - Public Domain
El dibujo original es de David Lozano (artista peruano fallecido en 1936). - Public Domain
George Engleheart - Public Domain
Raffi Asdourian - CC BY 2.0
U.S. Government Printing Office. - Public Domain
Herbert Abrams - CC BY-SA 3.0
Mathew Brady - Public Domain
Larry W. Howe - CC BY 4.0
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Mathews, John Joseph, 1895-1979
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Repro: Albert H. Payne († 1902) - Public Domain
Parepa-Rosa, Euphrosyne, 1836-1874
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Rabanus Flavus - Public Domain
Spitta, Karl Johann Philipp, 1801-1859
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Tabaković, Ivan, 1898-1977
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Anderson, William, 1842-1900
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Long, Huey Pierce, 1893-1935
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Fillmore, Millard, 1800-1874
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Alexandre Séon - Public Domain
Péladan, Joséphin, 1859-1918
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Feldberg, W. S.
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Franklin, Sidney, 1903-1976
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Portrait by Hallwig. - Public Domain
Andrews, R. Snowden (Richard Snowden), 1830-1903
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Strauss, Johann, 1804-1849
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Gulick, Luther Halsey, 1828-1891
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Rushout, John, Sir, 1684-1775
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Yves Tennevin - CC BY-SA 3.0
Davis, William B., 1938-
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Casey, T. L. (Thomas Lincoln), 1831-1896
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Helga Paasche - Public Domain
Paasche, Hans, 1881-1920
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El dibujo original es de David Lozano (artista peruano fallecido en 1936). - Public Domain
Riva-Aguero, José de la 1783-1858
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George Engleheart - Public Domain
Thompson, Thomas Boulden, 1766-1828
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Raffi Asdourian - CC BY 2.0
Anderson, Wes, 1969-....
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U.S. Government Printing Office. - Public Domain
Merrow, Chester E.
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Herbert Abrams - CC BY-SA 3.0
Abrams, Herbert L.
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Mathew Brady - Public Domain
Thayer, Eli, 1819-1899
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McKinley, Ray
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Murray, Alexander, 1775-1813
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Smith, Cordwainer, 1913-1966
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Hood, Tom, 1835-1874
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Mathew Brady - Public Domain
Walbridge, Hiram, 1821-1870
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Larry W. Howe - CC BY 4.0
Howe, Linda Moulton
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Lifford, James Hewitt, Viscount, 1709-1789