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Stephencdickson - CC BY-SA 4.0
Beyond My Ken -
EraserGirl - Public Domain
Public Domain
Gibi Savini - CC BY-SA 4.0
user at project - CC BY 2.5
Maksymilian Fajans (1827-1890) - Public Domain
unknown - Public Domain
By Julia Ward Howe - Public Domain
US Government staff photographer, scanned and cropped by uploader - Public Domain
Jmontbarron - CC BY-SA 4.0
Tiffany Gainsborough and Welsh-Pearson - Public Domain
Carl Wickland - Public Domain
Fuzheado - CC0 1.0
Yuval Yaron - CC BY-SA 3.0
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Hill, Tim, 1936-
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Stephencdickson - CC BY-SA 4.0
Playfair, Hugh Lyon, 1786-1861
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Beyond My Ken -
Congregation Mikveh Israel (Philadelphia, Pa.)
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EraserGirl - Public Domain
Gibson, Helen, 1894-1977
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Jadwin, Edgar, 1865-1931
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Public Domain
Finlaison, John, 1783-1860
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Gibi Savini - CC BY-SA 4.0
Lauri-Volpi, Giacomo, 1892-1979
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user at project - CC BY 2.5
Stiegler, Bernard.
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Maksymilian Fajans (1827-1890) - Public Domain
Fredro, Aleksander, 1793-1876
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Radet, Étienne (1762-1825).
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Vane, John R.
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unknown - Public Domain
Bartlett, Sy, 1903-1978
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By Julia Ward Howe - Public Domain
Sutherland, Evelyn Greenleaf, 1855-1908
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US Government staff photographer, scanned and cropped by uploader - Public Domain
Desobry, William R. (William Robertson), 1918-
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unknown - Public Domain
Girri, Alberto
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Jmontbarron - CC BY-SA 4.0
Barron, Jeannette Montgomery, 1956-
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unknown - Public Domain
Bamford, Samuel, 1788-1872
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unknown - Public Domain
Shorey, Paul, 1857-1934
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Bartholin, Thomas, 1616-1680
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unknown - Public Domain
Cullen, Thomas H., 1865-
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Lefebvre, Claude, 1632-1675
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Patterson, Flora W. (Flora Wambaugh), 1847-1928
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Sèze, Raymond de 1748-1828
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Tiffany Gainsborough and Welsh-Pearson - Public Domain
Clive, Colin, 1900-1937
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Tingley, Katherine Augusta Westcott, 1847-1929
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Davis, Spencer
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Keith, Brian, 1921-1997
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Carl Wickland - Public Domain
Wickland, Carl August, 1861-
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Fuzheado - CC0 1.0
Bunch, Lonnie G. III, 1952-
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Yuval Yaron - CC BY-SA 3.0
Kosashvili, Dover, 1966-....