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unknown - Public Domain
Atelier G.C. Beresford, London - Public Domain
Smithsonian Institution -
Civil War glass negative collection (Library of Congress) - Public Domain
Historyk - CC BY-SA 3.0
Julesasu - CC0 1.0
Original: Astronomical Institute, Academy of Sciences of the Czech Republic. - CC BY-SA 2.5
BPL - CC BY 2.0
Alexandre Debelle - Public Domain
Lalupa - CC BY-SA 3.0
Public Domain
Juan Moreno Tejada, (1739-1805) . Grabador. - Public Domain
Steve Kwak - CC BY 2.0
Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Marcelo Camargo/Agência Brasil -
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Briggs, Charles F. (Charles Frederick), 1804-1877
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Malczewski, Jacek, 1854-1929
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Morhof, Daniel Georg, 1639-1691
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unknown - Public Domain
Sorrel, G. Moxley (Gilbert Moxley), 1838-1901
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Gazdanov, Gaïto
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Andes, Keith
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Atelier G.C. Beresford, London - Public Domain
Custance, Olive, 1874-1944
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Sangster, Margaret Elizabeth Munson, 1838-1912
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Smithsonian Institution -
Mather, Kirtley F. (Kirtley Fletcher), 1888-1978
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Blythe, Betty, 1893-1972
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Civil War glass negative collection (Library of Congress) - Public Domain
Eaton, Joseph Horace
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unknown - Public Domain
Patrick, Ruth, 1907-2013
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Historyk - CC BY-SA 3.0
Dedecius, Karl
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Julesasu - CC0 1.0
Johanson, Donald C.
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Townshend, George Townshend, marquis, 1724-1807
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Original: Astronomical Institute, Academy of Sciences of the Czech Republic. - CC BY-SA 2.5
Ekers, R. D. (Ron D.)
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Kucharzewski, Jan, 1876-1952
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Hall, James K. P. (James Knox Polk), 1844-1915
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BPL - CC BY 2.0
Purvis, Robert, 1810-1898
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Alexandre Debelle - Public Domain
Bernard, P. J. (Pierre-Joseph), 1710-1775
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Lalupa - CC BY-SA 3.0
Leto, Giulio Pomponio, 1428-1497
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Public Domain
Loftin, Scott Marion, 1878-1953
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Jurado, Katy.
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Juan Moreno Tejada, (1739-1805) . Grabador. - Public Domain
Olavide, Pablo de, 1725-1803
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Public Domain
Schröder-Devrient, Wilhelmine, 1804-1860
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Steve Kwak - CC BY 2.0
McGraw, Tim, 1967-
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Lehzen, Louise
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unknown - Public Domain
Petipa, Marius, 1818-1910
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Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Williams, Jeremiah Norman, 1829-1915
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Marcelo Camargo/Agência Brasil -
Pateman, Carole.