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Internet Archive Book Images -
unknown - Public Domain
Shepsil22 - CC BY-SA 4.0
Huntley N. Spaulding - Public Domain
Not stated -
Robert L. Knudsen - Public Domain
Not stated - Public Domain
:w:en:Mathew Brady (1822-1896) or :w:en:Levin Corbin Handy (1855–1932) - Public Domain
Agence Meurisse. Upload, stitch and restoration by Jebulon - Public Domain
Charles Léandre - Public Domain
Public Domain
Seeteufel - CC BY-SA 3.0
unknown - CC BY 4.0
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Federico II Gonzaga, Duke of Mantua, 1500-1540
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Nölken, Franz 1884-1918
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Internet Archive Book Images -
Beal, W.J. (William James), 1833-1924
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unknown - Public Domain
Woodson, Urey, 1859-1939
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unknown - Public Domain
Bennett, F. A. (Frederick Augustus), 1871-1950
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Dulong, M. (Pierre Louis), 1785-1838
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Rublee, Horace, 1829-1896
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Walling, William English, 1877-1936
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Shepsil22 - CC BY-SA 4.0
Darwin, Robin (English painter, 1910-1974)
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Huntley N. Spaulding - Public Domain
Spaulding, Huntley Newell, 1869-1955
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Moore, Honor, 1945-....
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Not stated -
Bresadola, Giacomo, 1847-1929
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Gordon, Mary, 1949-....
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Robert L. Knudsen - Public Domain
Hughes, Richard J. (Richard Joseph), 1909-1992
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Not stated - Public Domain
Bruce, J. Collingwood (John Collingwood), 1805-1892
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:w:en:Mathew Brady (1822-1896) or :w:en:Levin Corbin Handy (1855–1932) - Public Domain
Marsh, Othniel Charles, 1831-1899
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Agence Meurisse. Upload, stitch and restoration by Jebulon - Public Domain
Mangin, Charles, 1866-1925
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Harsnett, Samuel, 1561-1631
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Scofield, John.
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Oldenburg, Henry, approximately 1615-1677
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Bismarck, Herbert, Fürst von, 1849-1904
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Charles Léandre - Public Domain
Léandre, Charles, 1862-1934
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Public Domain
Brown, James, 1766-1835
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Seeteufel - CC BY-SA 3.0
Kistler, Cyrill, 1848-1907
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Darling, Ralph, Sir, 1775-1858
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Public Domain
Pfaff, Johann Friedrich, 1765-1825
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Cohen, Harriet
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Cramer, Wilhelm, 1746-1799
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unknown - CC BY 4.0
Keilin, David, 1887-1963
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Berruguete, Pedro, 1440-1504