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Brad Slade - CC BY-SA 1.0
unknown/uncredited -
original uploader - Public Domain
nicolas genin - CC BY-SA 2.0
unknown - Public Domain
Toepoet - CC BY 3.0
J. R. Skelton (Joseph Ratcliffe Skelton; 1865–1927) (illustrator), erroneously credited as John R. Skelton - Public Domain
author - Public Domain
unknown -
NASA - Public Domain
Credited to Fotografie Fils d'Alexandria, Rome; restored by uploader - Public Domain
Photographer not named. - Public Domain
17th Century - Public Domain
Attributed to Richard Morrell Staig - Public Domain
CVB - CC BY-SA 4.0
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Brad Slade - CC BY-SA 1.0
Goldsmith, Michael, 1951-2009
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Blanqui, Auguste, 1805-1881
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Louvet de Couvray, Jean-Baptiste, 1760-1797
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unknown/uncredited -
Fondane, Benjamin, 1898-1944
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original uploader - Public Domain
Whitridge, Frederick W. (Frederick Wallingford), 1852-1916
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nicolas genin - CC BY-SA 2.0
Hawke, Ethan, 1970-....
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unknown - Public Domain
Gayoso de Lemos, Manuel, 1747-1799
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White, J. Campbell (John Campbell), 1870-
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Toepoet - CC BY 3.0
Tucker, Beverley Dandridge, 1846-1930
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Fitch, Clyde, 1865-1909
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J. R. Skelton (Joseph Ratcliffe Skelton; 1865–1927) (illustrator), erroneously credited as John R. Skelton - Public Domain
Columba, Saint, 521-597
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author - Public Domain
Copeland, Joseph Tarr, 1813-1893
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unknown - Public Domain
Rose, Ernestine, 1880-1961
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Windsor, Marie
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Brooks, Preston S. (Preston Smith), 1819-1857
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unknown -
Polak, Jakob Eduard, 1818-1891
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Whipple, Squire, 1804-1888
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Buber, Martin, 1878-1965
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NASA - Public Domain
Reilly, James F., II, 1954-
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Patterson, Robert, 1792-1881
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Newland, Henry Simpson, 1873-1969
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Credited to Fotografie Fils d'Alexandria, Rome; restored by uploader - Public Domain
Lubin, David, 1849-1919
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Photographer not named. - Public Domain
Vigeland, Gustav, 1869-1943
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17th Century - Public Domain
Philips, Peter, 1561-1628
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Calleja del Rey, Félix María, conde de Calderón, 1755?-1828
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Attributed to Richard Morrell Staig - Public Domain
Van Rensselaer, Jeremiah, 1740-1810
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Runciman, Walter Runciman, Viscount, 1870-1949
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CVB - CC BY-SA 4.0
American Library in Paris
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Schoenberg, Arnold, 1874-1951
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Tietjen, Heinz, 1881-1967