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Hpschaefer - CC BY-SA 3.0
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Moshe Pridan - Public Domain
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Braswiki - CC BY-SA 3.0
Guillet - Public Domain
unknown - Public Domain
Slowking4 -
Atelier Nadar - Public Domain
Georges Biard - CC BY-SA 3.0
Bjarteh - CC BY 3.0
Peter Campbell - CC BY-SA 4.0
Dosio - Public Domain
US gov - Public Domain
George Frederic Watts - Public Domain
Imogen Cunningham -
A. Gerschel et fils, - Public Domain
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Seebeck, Thomas Johann, 1770-1831
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Hpschaefer - CC BY-SA 3.0
West, Franz, 1947-2012
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Public Domain
Cousins, Norman.
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Moshe Pridan - Public Domain
Levitt, Arthur, 1900-1980
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Photographer Philip Scalia -
Brown, Dan, 1964-....
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Frege, Gottlob, 1848-1925
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Braswiki - CC BY-SA 3.0
Furtado, Jorge, 1959-....
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Guillet - Public Domain
Jullien, Louis, 1812-1860
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unknown - Public Domain
Chevrolet, Louis, 1878-1941
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Calonne, Charles-Alexandre de, 1734-1802
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Benson, Martin, 1689-1752
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unknown - Public Domain
Languet, Hubert, 1518-1581
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Leopardi, Giacomo, 1798-1837
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Slowking4 -
Ostriker, Alicia.
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Morton, John, 1725-1777
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Atelier Nadar - Public Domain
Vieuille, Felix
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Georges Biard - CC BY-SA 3.0
Rossellini, Isabella
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Debs, Eugene V. (Eugene Victor), 1855-1926
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Bjarteh - CC BY 3.0
Antonsen, Ole Edvard, 1962-
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unknown - Public Domain
James, Alice, 1848-1892
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Peter Campbell - CC BY-SA 4.0
Milne, Christine, 1953-
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Foster, David, 1949-
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Dosio - Public Domain
Holm, Frits, 1881-1930
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US gov - Public Domain
Anderson, Robert B. (Robert Bernerd), 1910-1989
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Ray, Ronald D.
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George Frederic Watts - Public Domain
Ionides, Constantine Alexander, 1833-1900
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Imogen Cunningham -
Chinn, Benjamen, 1921-2009
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Tufton, Sackville, -1721
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Ortega y Gasset, José, 1883-1955
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A. Gerschel et fils, - Public Domain
Brillouin, Marcel, 1854-1948