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unknown - Public Domain
Public Domain
T. Charles Erickson - CC BY 2.0
Joseph Slater - Public Domain
John Alexander Cooper - Public Domain
original uploader - CC BY-SA 2.5
Nick Step - CC BY 2.0
Magazelka - CC BY-SA 3.0
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Rochlitz, Friedrich, 1769-1842
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Marcy, Daniel, 1809-1893
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Rigby, Edward, 1747-1821
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Lefroy, J. H. (John Henry), Sir, 1817-1890
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unknown - Public Domain
French, Samuel Gibbs, 1818-1910
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Smith, Robert, 1802-1867
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Hölty, Ludwig Heinrich Christoph, 1748-1776
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Public Domain
Huggins, Charles, 1901-1997
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T. Charles Erickson - CC BY 2.0
Cromer, David
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Joseph Slater - Public Domain
Smyth, William, 1765-1849
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John Alexander Cooper - Public Domain
Macdonald, William C. (William Christopher), 1831-1917
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Bussell, Darcey.
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Howard University. School of Law
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Dellet, James, 1788-1848
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unknown - Public Domain
Smith, Lucy, 1775-1856
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original uploader - CC BY-SA 2.5
Veneziano, G. (Gabriele)
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unknown - Public Domain
Victor, Metta Victoria Fuller, 1831-1885
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Martini, Francesco di Giorgio, 1439-1502
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Peabody, Joseph, 1757-1844
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Bradstreet, John, 1711-1774
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Morselli, Enrico Agostino, 1852-1929
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Salomons, David, Sir, 1851-1925
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unknown - Public Domain
Ross, Harold Wallace, 1892-1951
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Bader, Alfred, 1924-....
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Hinsley, Arthur, 1865-1943
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O'Keefe, Timothy F. (Timothy Francis), 1919-1984
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Nick Step - CC BY 2.0
Taylor-Wood, Sam, 1967-
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Hodder, Frank Heywood, 1860-1935
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Magazelka - CC BY-SA 3.0
Gelman, Juan, 1930-2014
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Brohan, Augustine