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Nadar - Public Domain
Henri-Gabriel Ibels - Public Domain
signed G(?) Kill - Public Domain
William Arba Ellis - Public Domain
unknown - Public Domain
James Russell & Sons - Public Domain
James T. White & Company, New York - Public Domain
John Mathew Smith & www.celebrity-photos.com - CC BY-SA 2.0
Sean Rowe - CC BY-SA 2.0
MavsFan28 - CC BY-SA 4.0
Yaffa Tegegne • יפה טגניה - CC BY-SA 3.0
Public Domain
Daderot - Public Domain
Tiffany Gainsborough and Welsh-Pearson - Public Domain
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Thatcher, Henry Knox, 1806-1880
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Nadar - Public Domain
Galli-Marié, Celéstine, 1840-1905
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Henri-Gabriel Ibels - Public Domain
Osbert, Alphonse, 1857-1939
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signed G(?) Kill - Public Domain
Patterson, C. P. (Carlile Pollock), 1816-1881
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Finley, Martha, 1828-1909
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Henry, Thomas, 1734-1816
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Tarsila, 1886-1973
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Wood, Garfield Arthur, 1880-1971
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William Arba Ellis - Public Domain
Vilas, Levi B. (Levi Baker), 1811-1879
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unknown - Public Domain
Oller, Francisco, 1833-1917
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James Russell & Sons - Public Domain
Brock, Thomas, 1847-1922
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James T. White & Company, New York - Public Domain
Wood, Bradford Ripley, 1800-1889
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John Mathew Smith & www.celebrity-photos.com - CC BY-SA 2.0
Bond, Horace Julian, 1940-2015
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Sean Rowe - CC BY-SA 2.0
Taylor, Mick
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Liepmann, Hugo, 1863-1925
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Greenstein, Robert, 1946-
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MavsFan28 - CC BY-SA 4.0
Thomas, Jonathan Taylor
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Barber, Hiram, 1835-1924
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Yaffa Tegegne • יפה טגניה - CC BY-SA 3.0
Tegegne, Baruch, 1944-....
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Frelinghuysen, Peter H. B.
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Reimarus, Johann Albert Heinrich, 1729-1814
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Public Domain
Copeland, Royal S. (Royal Samuel), 1868-1938
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unknown - Public Domain
Márquez, Leonardo, 1820-
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Daderot - Public Domain
Mears, Otto, 1840-1931
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Tiffany Gainsborough and Welsh-Pearson - Public Domain
Clive, Colin, 1900-1937
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Beall, J. Glenn (James Glenn), 1894-1971
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Troelstra, Pieter Jelles, 1860-1930
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Matteotti, Giacomo, 1885-1924
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Fischer, Emil, 1852-1919
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Macdonald, John Alexander, Sir, 1815-1891