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author - Public Domain
Frantogian - CC BY-SA 3.0
unknown photographer - Public Domain
Kendrick Frazier - CC BY 2.5
Anonymous - National Gallery of Canada, Library and Archives, Fonds Max Stern - Public Domain
August Weger - Public Domain
GFHund - CC BY 3.0
Teddyyy - CC BY 3.0
Maurir; published in Paris by Grégoire et Deneux. -
unknown - Public Domain
Stephencdickson - CC BY-SA 4.0
Enrico Guastaldi -
Public Domain
Keith Allison - CC BY-SA 2.0
Juan Bernabé Palomino (1692-1777) - Public Domain
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Kennedy, Douglas, 1915-1973
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Burns, Bob, 1890-1956
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author - Public Domain
Bennard, George, 1873-1958
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Carmichael, J. W. (John Wilson), 1799-1868
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Sitte, Camillo, 1843-1903
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Frantogian - CC BY-SA 3.0
Berenger, Tom, 1950-
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Fattori, Giovanni, 1825-1908
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unknown photographer - Public Domain
Guastavino, Carlos
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Niwano, Nikkyō, 1906-1999
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Companys y Jover, Luis, 1882-1940
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Lovering, Joseph, 1813-1892
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Kendrick Frazier - CC BY 2.5
Frazier, Kendrick.
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Anonymous - National Gallery of Canada, Library and Archives, Fonds Max Stern - Public Domain
Stern, Max, 1904-1987
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Allen, Grant, 1848-1899
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August Weger - Public Domain
Satter, Gustave
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Abegg, R. (Richard), 1869-1910
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GFHund - CC BY 3.0
Heidenfeld, Wolfgang
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Teddyyy - CC BY 3.0
Basinger, Kim, 1953-....
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Maurir; published in Paris by Grégoire et Deneux. -
Duméril, C. (Constant), 1774-1860
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Dwan, Allan, 1885-1981
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unknown - Public Domain
Chapman, T. A. (Thomas Algernon), 1842-1921
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Stephencdickson - CC BY-SA 4.0
Illingworth, Charles Frederick William, Sir, 1899-
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Smith, Lance L., 1946-
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Enrico Guastaldi -
Pinsuti, Ciro, 1829-1888
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Public Domain
Acharius, Erik, 1757-1819
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Walsh, Don, 1931-
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Blair, Emily Newell, 1877-
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Keith Allison - CC BY-SA 2.0
Thomas, Isiah, 1961-
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Norvins, M. de, 1769-1854
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Juan Bernabé Palomino (1692-1777) - Public Domain
Feijóo, Benito Jerónimo (1676-1764).