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unknown - Public Domain
Ed Schipul - CC BY-SA 2.0
Renate Schmid, Copyright is with MFO - CC BY-SA 2.0
Macfadden Publications -
Harris & Ewing - Public Domain
Studio Sughi -
Steven Waskow, copyright transferred to Avinash Dixit via a written statement -
Martin, Jules - Public Domain
Photographer:George Hoyt - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
Marcel Antonisse / Anefo - CC BY-SA 3.0
Uploaded first to w:de:Bild:Dave_Warren_with_BlackBox_Prototype.jpg - Public Domain
user at project - CC BY-SA 3.0
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Holburne, Francis, 1704-1771
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Waghalter, Ignatz, 1882-1949
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unknown - Public Domain
Boskovich, Alexander Uriah
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Guastavillani, Filippo, ?-1587
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Ed Schipul - CC BY-SA 2.0
Eisner, Michael, 1942-
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Renate Schmid, Copyright is with MFO - CC BY-SA 2.0
Lebowitz, Joel Louis, 1930-....
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Macfadden Publications -
Malone, Ted, 1908-1989
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Harris & Ewing - Public Domain
Cantor, Jacob A. (Jacob Aaron), 1854-1921
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Studio Sughi -
Sughi, Alberto, 1928-
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Tuke, James H. (James Hack), 1819-1896
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Steven Waskow, copyright transferred to Avinash Dixit via a written statement -
Dixit, Avinash K.
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Bache, Richard, 1737-1811
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Martin, Jules - Public Domain
Beaury-Saurel, Amélie 1848-1924
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Weininger, Otto, 1880-1903
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Yi, U-hwan, 1936-
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Carpentier, Georges, 1894-1975
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Kupferman, Moshe, 1926-2003
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Photographer:George Hoyt - Public Domain
Pusey, Nathan M. (Nathan Marsh), 1907-2001
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Mathew Brady Levin Corot Handy - Public Domain
Sawyer, Philetus, 1816-1900
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unknown - Public Domain
Breathitt, Edward T., 1924-
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Marcel Antonisse / Anefo - CC BY-SA 3.0
Harnoncourt, Nikolaus
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Levertin, Oscar, 1862-1906
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Fowler, Christopher
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Uploaded first to w:de:Bild:Dave_Warren_with_BlackBox_Prototype.jpg - Public Domain
Warren, David (inventor)
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Morse, Henry, Saint, 1595-1645
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unknown - Public Domain
Canaro, Francisco
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Kimball, H. I. (Hannibal Ingalls), 1832-1895
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user at project - CC BY-SA 3.0
Islam, Jamal N.
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Launey, Bernard René Jourdan, marquis de, 1740-1789
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Cummings, Amos J. (Amos Jay), 1841-1902