Image from Wikimedia Commons
Frits Lugt -
Arnopeters - CC BY-SA 3.0
Robert White - Public Domain
Unknown photographer (not specified in book) -
Henry Chase - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
Anonymous photographer. - Public Domain
unknown - Public Domain
Greghenderson2006 - CC BY-SA 4.0
hodges - Public Domain
Library of the London School of Economics and Political Science -
Georges Biard - CC BY-SA 3.0
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Oldfield, Anne, 1683-1730
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Pethick-Lawrence, Frederick William Pethick-Lawrence, Baron, 1871-1961
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Figner, Vera, 1852-1942
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Frits Lugt -
Lugt, Frits, 1884-1970
Image from Wikimedia Commons
Arnopeters - CC BY-SA 3.0
Custine, Astolphe, marquis de, 1790-1857
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Robert White - Public Domain
Disney, John, 1677-1730
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Unknown photographer (not specified in book) -
Ore, Øystein, 1899-1968
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Henry Chase - Public Domain
Dana, John Winchester, 1808-1867
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Tallents, Francis, 1619-1708
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Voght, C. (Caspar), Freiherr von, 1752-1839
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Littleton, Thomas, Sir, -1481
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Kirk, John, Sir, 1832-1922
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Kner, Rudolf, 1810-1869
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Mathew Brady Levin Corot Handy - Public Domain
Alcorn, J. L. (James Lusk), 1816-1894
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Peterson, Peter G.
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Anonymous photographer. - Public Domain
Dickson, H. R. P. (Harold Richard Patrick), 1881-1959
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Lee, George, Sir, 1700-1758
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Dingelstedt, Franz, Freiherr von, 1814-1881
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unknown - Public Domain
Lewis, William H. (William Henry), 1868-1949
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unknown - Public Domain
Denny, George Hutcheson, 1870-1955
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Cornelisz van Oostsanen, Jacob, 1472?-1533
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Hess, Moses, 1812-1875
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O'Neill, William A. (William Atchison), 1930-2007
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Morse, Leopold, 1831-1892
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Greghenderson2006 - CC BY-SA 4.0
Ford, Tirey LaFayette, b. 1857
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hodges - Public Domain
Hodges, George, 1856-1919
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Gonzaga Colonna, Vespasiano, duca di Sabbioneta, 1531-1591
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Library of the London School of Economics and Political Science -
Barry, Brian, 1936-2009
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Colby, Thomas, 1784-1852
Image from Wikimedia Commons
Georges Biard - CC BY-SA 3.0
Besson, Luc