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Engraver unknown, based on a lost portrait by an unknown artist - Public Domain
Roger Higgins, World Telegram staff photographer - Public Domain
Helmut Kolle - Public Domain
Smokeonthewater - CC BY-SA 4.0
Gbonaju - CC BY-SA 3.0
Bain News Service, publisher - Public Domain
Edward Harold Mott - Public Domain
Lincoln Alexander Centre - CC0 1.0
Lothar Wolleh - CC BY-SA 3.0
J. W Lindt (John William) 1845-1926 photographer -
Gage Skidmore - CC BY-SA 3.0
Henry Holt and Co., 1909 - Public Domain
Albert Rudomine - Public Domain
Leif Ørnelund - CC BY-SA 4.0
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Engraver unknown, based on a lost portrait by an unknown artist - Public Domain
Theyanoguin, Hendrick Peters, 1692-1755
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Roger Higgins, World Telegram staff photographer - Public Domain
Schulz, Charles M. (Charles Monroe), 1922-2000
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Smith, Samuel, 1752-1839
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Helmut Kolle - Public Domain
Uhde, Wilhelm, 1874-1947
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Eggeling, Viking, 1880-1925
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Thomson, Joseph, 1858-1895
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Smokeonthewater - CC BY-SA 4.0
Hunt, Helen, 1963-...
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Gbonaju - CC BY-SA 3.0
Cantelli, Guido
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Bain News Service, publisher - Public Domain
Clews, Henry, 1836-1923
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Reutter, Otto, 1870-1931
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Edward Harold Mott - Public Domain
Moran, Charles
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Lincoln Alexander Centre - CC0 1.0
Alexander, Lincoln M. (Lincoln MacCauley), 1922-2012
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Stuart, George Okill, 1807-1884
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Lothar Wolleh - CC BY-SA 3.0
Delaunay, Sonia
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J. W Lindt (John William) 1845-1926 photographer -
Forbes, Henry O. (Henry Ogg), 1851-1932
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Spitzka, Edward Anthony, 1876-1922
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Bera, Ami, 1965-
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Bridwell, Jim
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Gage Skidmore - CC BY-SA 3.0
Brandt, Betsy
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Gavin, John, 1928-....
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Henry Holt and Co., 1909 - Public Domain
Finch, Francis M. (Francis Miles), 1827-1907
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Stewart, Paula
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Moran, Dolores, 1924-1982
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Albert Rudomine - Public Domain
Rudomine, Albert, 1892-1975
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Cuming, Thomas B. (Thomas Barney), 1828-1858
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Sendall, Walter J. (Walter Joseph), 1832-1904
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Ravenstein, Ernst Georg, 1834-1913
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Sarasin, Jean-François, 1615-1654
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Walker, Nancy, 1922-1992
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Leif Ørnelund - CC BY-SA 4.0
Segelcke, Tore