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United States Copyright Office - Public Domain
unknown - Public Domain
Amadeo Modigliani - Public Domain
Sentruper - CC0 1.0
original uploader - Public Domain
Kendrick Frazier - CC BY 2.5
The Hoyle Studio - Public Domain
Foster Studio - Public Domain
US gov - Public Domain
Public Domain
Mathew Brady Levin Corot Handy - Public Domain
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United States Copyright Office - Public Domain
Ringer, Barbara A. (Barbara Alice), 1925-2009
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unknown - Public Domain
Jones, Edward Franc, 1828-1913
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Cleveland, Rose Elizabeth, 1846-1918
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Clavigero, Francesco Saverio, 1731-1787
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Sirmay, Albert.
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Amadeo Modigliani - Public Domain
Vassilieff, Marie, 1884-1957
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Littleton, Thomas, Sir, -1481
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Sentruper - CC0 1.0
Murri, Romolo, 1870-1944
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Gesell, Silvio, 1862-1930
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Kain, John Joseph, 1841-1903
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Scholl, Aurélien, 1833-1902
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Peavey, Hubert Haskell, 1881-1937
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original uploader - Public Domain
Scheffel, Joseph Viktor von, 1826-1886
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Kendrick Frazier - CC BY 2.5
Frazier, Kendrick.
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The Hoyle Studio - Public Domain
Forbes, Stephen Alfred, 1844-1930
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Parker, Peter, 1785-1814
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Foster Studio - Public Domain
Howell, Henry E. (Henry Evans), 1920-1997
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US gov - Public Domain
Pryor, David, 1934-
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Crébillon, Claude-Prosper Jolyot de, 1707-1777
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Public Domain
Home, D. D. (Daniel Dunglas), 1833-1886
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Barnard, Henry William, Sir, 1799-1857
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Platt, Edward
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unknown - Public Domain
Epiphanius, Saint, Bishop of Constantia in Cyprus, approximately 310-403
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La Luzerne, César-Guillaume de, 1738-1821
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Pryor, Luke, 1820-1900
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unknown - Public Domain
Du Pont, Alfred I. (Alfred Irénée), 1864-1935
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unknown - Public Domain
Derham, W. (William), 1657-1735
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Mathew Brady Levin Corot Handy - Public Domain
Casserly, Eugene, 1820-1883
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Bertrand, Aloysius, 1807-1841
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Breckinridge, William Campbell Preston, 1837-1904