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author - CC0 1.0
unknown - Public Domain
original uploader - Public Domain
Yoichi Okamoto - Public Domain
unknown -
Marcel Lefrancq - CC BY-SA 3.0
Chuck369 - CC BY-SA 3.0
Desconocido (principios s. XIX) - Public Domain
Jovan Popović (painter) - Public Domain
CBS Television - Public Domain
Atelier Franz Werner, München - Public Domain
Richard de Montbaston et collaborateurs - Public Domain
Doc Searls - CC BY-SA 2.0
David Gerstein - CC BY-SA 3.0
Berenice Abbott - Public Domain
The Library of Congress - Public Domain
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author - CC0 1.0
Mendoza y Ríos, José de, 1763-1816
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Francis, Thomas, Jr., 1900-1969
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Blau, Édouard 1836-1906
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Michelet, Jules, 1798-1874
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Whitworth, Joseph, 1803-1887
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unknown - Public Domain
Gerard, James W. (James Watson), 1867-1951
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original uploader - Public Domain
Goldfaden, Abraham, 1840-1908
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Yoichi Okamoto - Public Domain
Young, Whitney M. Whitney M. Young papers.
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unknown -
Schickele, René, 1883-1940
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Marcel Lefrancq - CC BY-SA 3.0
Breuil, Henri, 1877-1961
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original uploader - Public Domain
Green, Fitzhugh, 1888-1947
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Wycherley, William, 1640-1716
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Galsworthy, John, 1867-1933
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Chuck369 - CC BY-SA 3.0
O'Neill, Dick, 1928-1998
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Desconocido (principios s. XIX) - Public Domain
Guise, Martín Jorge, 1780-1828
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Jovan Popović (painter) - Public Domain
Popović, Jovan Sterija, 1806-1856
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CBS Television - Public Domain
Talbot, Nita, 1930-
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Marcoux, Joseph, 1791-1855
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Visentini, Antonio, 1688-1782
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Atelier Franz Werner, München - Public Domain
Uhde, Fritz von 1848-1911
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unknown - Public Domain
Bardini, Stéfano 1836-1922
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unknown - Public Domain
Drobisch, Moritz Wilhelm, 1802-1896
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Tate, John Torrence, 1925-....
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Richard de Montbaston et collaborateurs - Public Domain
Hippolytus, Antipope, approximately 170-235 or 236
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Doc Searls - CC BY-SA 2.0
Nesson, Charles R.
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unknown - Public Domain
Field, Walbridge Abner, 1833-1899
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Straet, Jan van der 1523-1605
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David Gerstein - CC BY-SA 3.0
Gerstein, David, 1944-....
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Berenice Abbott - Public Domain
Solano, Solita, 1888-1975
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The Library of Congress - Public Domain
Seabury, Samuel, 1873-1958