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Smithsonian Institution -
unknown - Public Domain
Unknown, portrait from the beginning of the 19th. century - Public Domain
Cecil W. Stoughton - Public Domain
https://www.flickr.com/photos/vagueonthehow/ - CC BY 2.0
Daguerreotype: Horatio Ross<br> - Public Domain
Georges Biard - CC BY-SA 3.0
Anonymous (photography) - Public Domain
Renate Bertlmann - CC BY-SA 4.0
Public Domain
Muesse - CC BY 3.0
Nikita - CC BY-SA 2.5
Harris & Ewing - Photographer - Public Domain
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Lanier, Jaron.
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Elon, Menachem
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Smithsonian Institution -
Tait, Arthur Fitzwilliam, 1819-1905
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Hammershøi, Vilhelm, 1864-1916
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unknown - Public Domain
Fisher, King, 1854-1884
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unknown - Public Domain
Semple, Eugene, 1840-1908
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Unknown, portrait from the beginning of the 19th. century - Public Domain
Fö̈rster, Friedrich Christoph, 1791-1868
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unknown - Public Domain
Stradivari, Antonio, approximately 1644-1737
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Elliott, Charlotte, 1789-1871
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Moulton, Louise Chandler, 1835-1908
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Cecil W. Stoughton - Public Domain
Wiesner, Jerome B. (Jerome Bert), 1915-1994
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unknown - Public Domain
Potter, Walter, 1835-1918
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Roche, James Jeffrey, 1847-1908
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https://www.flickr.com/photos/vagueonthehow/ - CC BY 2.0
Connell, Alan
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Pershing, John J. (John Joseph), 1860-1948
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Sibthorp, Charles De Laet Waldo, 1783-1855
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Daguerreotype: Horatio Ross<br> - Public Domain
Ross, Horatio, 1801-1886
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Georges Biard - CC BY-SA 3.0
Holgado, Ticky
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Anonymous (photography) - Public Domain
Piper, Leonora, 1859-1950
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unknown - Public Domain
Watanabe, Mutsuhiro , 1918-2003
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Renate Bertlmann - CC BY-SA 4.0
Bertlmann, Renate, 1943-....
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Jensen, Georg Arthur, 1866-1935
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Public Domain
Dean, Bashford, 1867-1928
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Muesse - CC BY 3.0
Kelemen, Milko
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Thorpe, Richard, 1896-1991
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Price, Tom, 1852-1909
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Haver, Phyllis, 1899-1960
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Nikita - CC BY-SA 2.5
Ōshima, Nagisa, 1932-2013
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Neile, Richard, 1562-1640
Image from Wikimedia Commons
Harris & Ewing - Photographer - Public Domain
Bulkeley, Morgan G. (Morgan Gardner), 1837-1922