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unknown. Original uploader was :de:DALIBRI - Public Domain
Photo not credited in any obvious way - Public Domain
unknown - Public Domain
Alfons Karny - Public Domain
REUVEN FRIZI - CC BY-SA 3.0
Public Domain
Unidentified photographer for Bassano Ltd - Public Domain
Illustrator not indicated - Public Domain
Thomas Cross - Public Domain
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Chen, Cheng, 1898-1965
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unknown. Original uploader was :de:DALIBRI - Public Domain
Petrejus, Johannes, 1497-1550
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Pye, Henry James, 1745-1813
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Photo not credited in any obvious way - Public Domain
Haller, Granville O. (Granville Owen), 1820-1897
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Hill, Walter, 1942-
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Marlowe, Christopher, 1564-1593
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Meier, Georg Friedrich, 1718-1777
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Cromwell, Thomas, Earl of Essex, 1485?-1540
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Bernard, Francis, Sir, 1712?-1779
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unknown - Public Domain
Krehbiel, Henry Edward, 1854-1923
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unknown - Public Domain
Byrom, John, 1692-1763
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Ezekiel, Moses Jacob, 1844-1917
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Alfons Karny - Public Domain
Parandowski, Jan, 1895-1978
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Golden Gate National Recreation Area (Agency : U.S.)
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REUVEN FRIZI - CC BY-SA 3.0
Moyal, Harʼel, 1981-
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Public Domain
Scudder, Ida Sophia, 1870-1960
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unknown - Public Domain
Hangal, Gangoobai, 1913-2009
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Unidentified photographer for Bassano Ltd - Public Domain
Mosley, Diana, 1910-2003
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Illustrator not indicated - Public Domain
Drew, Daniel, 1797-1879
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Lyttelton, Edward
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Thomas Cross - Public Domain
Roberts, Francis, 1609-1675
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Hayashi, Shihei, 1738-1793
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Dieudonné, Jean, 1906-1992
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Rockefeller, David, 1915-2017
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unknown - Public Domain
Kershaw, Joseph Brevard, 1822-1894
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Engler, Carl, 1842-1925
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Cienfuegos Arteaga, José Ignacio, 1762-1847
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Harwood, Busick, 1745?-1814
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unknown - Public Domain
Spare, Austin Osman, 1886-1956
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Marino, Giambattista, 1569-1625