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Singer (Photographer) -
James Thackara - CC BY-SA 3.0
MichaelNetzer - CC BY-SA 3.0
Slowking -
Al83tito - CC BY-SA 4.0
NASA - Public Domain
Charles Wells Moulton, Buffalo, New York - Public Domain
New York state police - Public Domain
Tailok - Public Domain
artist unknown - Public Domain
G. Holden Pike - Public Domain
OTFW - CC BY-SA 3.0
John Jones (circa 1745-1797) after George Romney<br/> - Public Domain
Contemporary portrait - Public Domain
Poeticalliteraria - CC BY-SA 3.0
Fulvio Wetzl - CC BY-SA 3.0
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Tausig, Carl, 1841-1871
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Singer (Photographer) -
Eliot, Martha M. (Martha May), 1891-1978
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James Thackara - CC BY-SA 3.0
Thackara, James, 1944-....
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MichaelNetzer - CC BY-SA 3.0
Cockrum, Dave, 1943-2006
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Salfeld, Siegmund, 1843-1926
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Bodenstein, Max, 1871-1942
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Rossi, Giovanni Battista de, 1822-1894
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Slowking -
Elliott, Laura, 1957-
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Green, Alfred E., 1889-1960
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Standley, William Harrison, 1872-1963
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Al83tito - CC BY-SA 4.0
Perry, John Curtis.
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Ravenstein, Ernst Georg, 1834-1913
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NASA - Public Domain
Engle, Joe, 1932-
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McCubbin, Frederick, 1855-1917
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Charles Wells Moulton, Buffalo, New York - Public Domain
Dorr, Julia C. R. (Julia Caroline Ripley), 1825-1913
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New York state police - Public Domain
Larkin, James, 1876-1947
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Ensenada, Zenón de Somodevilla y Bengoechea, Marqués de la, 1702-1781
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Basinski, William, 1958-
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Tailok - Public Domain
Nettlau, Max, 1865-1944
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artist unknown - Public Domain
Kane, Thomas L. (Thomas Leiper), 1822-1883
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G. Holden Pike - Public Domain
Cassell, John, 1817-1865
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Bunny, Rupert, 1864-1947
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OTFW - CC BY-SA 3.0
Forell, Birger, 1893-1958
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John Jones (circa 1745-1797) after George Romney<br/> - Public Domain
Westmorland, John Fane, Earl of, 1759-1841
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Contemporary portrait - Public Domain
Brownell, Thomas Church, 1779-1865
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Arthur, Chester Alan, 1829-1886
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Rist, Johann, 1607-1667
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Tata, Ratan, Sir, 1871-1918
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Poeticalliteraria - CC BY-SA 3.0
Kenney, Richard
Image from Wikimedia Commons
Fulvio Wetzl - CC BY-SA 3.0
Bonaiuto, Anna