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Georges Biard - CC BY-SA 3.0
Cecil W. Stoughton - Public Domain
unknown - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
unknown -
Perry, William Stevens - Public Domain
original uploader - Public Domain
Not stated - Public Domain
Émile Lassalle - Public Domain
Gage Skidmore - CC BY-SA 3.0
William Ridley - Public Domain
Rufus Holsinger - Public Domain
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Malpighi, Marcello, 1628-1694
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Georges Biard - CC BY-SA 3.0
Desplechin, Arnaud
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Cecil W. Stoughton - Public Domain
Friday, William C. (William Clyde)
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Pergolesi, Giovanni Battista, 1710-1736
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unknown - Public Domain
Babcock, Maud May, 1867-1954
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Lay, Benjamin, 1682-1759
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Lennox, Charlotte, ca 1729-1804
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Mathew Brady Levin Corot Handy - Public Domain
Valentine, Edward Kimble, 1843-1916
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unknown -
De Stefani, Alessandro, 1891-1970
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Perry, William Stevens - Public Domain
Onderdonk, Henry U. (Henry Ustick), 1789-1858
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Juan, de Ribera, Saint, 1532-1611
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Bierce, Ambrose, 1842-1914?
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original uploader - Public Domain
Allward, Walter Seymour, 1876-1955
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Vaudoyer, Léon, 1803-1872
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unknown - Public Domain
Rix Nicholas, Hilda, 1884-1961
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Cooke, Benjamin, 1734-1793
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unknown - Public Domain
Abulafia, Meir, 1180-ca 1244
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Not stated - Public Domain
Halsey, Francis W. (Francis Whiting), 1851-1919
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Émile Lassalle - Public Domain
Grandville, J.J. 1803-1847
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Crowninshield, Frank, 1872-1947
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Lewis, John, 1675-1747
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Walker, Jonathan, 1799-1878
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Slayden, James Luther, 1853-1924
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Gage Skidmore - CC BY-SA 3.0
Stillman, Whit, 1952-
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William Ridley - Public Domain
Maurice, Thomas, 1754-1824
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Rufus Holsinger - Public Domain
Alderman, Edwin Anderson, 1861-1931
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Macklin, Charles, 1697?-1797
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Hoit, Albert Gallatin, 1809-1856
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Mayenne, Charles de Lorraine, Duc de, 1554-1611
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Pettigrew, Richard F. (Richard Franklin), 1848-1926