Image from Wikimedia Commons
Janandd - CC BY-SA 2.5
Tomas Forgac - CC BY 2.0
Bisto - CC BY-SA 3.0
Civil War glass negative collection (Library of Congress) - Public Domain
Litho by Alexander Clemens Wetterling (1796-1858) from an original picture by Elias Martin Elias Martin (1739-1818). - Public Domain
Rosetta Reitz, Duke University - CC BY-SA 3.0
Congressional Portrait Collection (Library of Congress). - Public Domain
Sebastian Le Clerc - Public Domain
file Jarda 75, en.wiki Stilltim, engraving ??? - Public Domain
Bain News Service photograph - Public Domain
Joseph Kriehuber Foto: :de:Peter Geymayer - Public Domain
unknown - Public Domain
Cbl62 - CC BY 3.0
John Singer Sargent - Public Domain
Mimi Thi Nguyen - CC BY-SA 2.0
Georges Biard - CC BY-SA 3.0
7moxy7 - CC BY-SA 4.0
Image from Wikimedia Commons
Watson-Taylor, George, 1771-1841
Image from Wikimedia Commons
Janandd - CC BY-SA 2.5
Parker, E.N. (Eugene Newman), 1927-
Image from Wikimedia Commons
North, Wheeler J.
Image from Wikimedia Commons
Adorno, Theodor
Image from Wikimedia Commons
Cline, Isaac Monroe, 1861-1955
Image from Wikimedia Commons
Tomas Forgac - CC BY 2.0
Lewis, Ramsey
Image from Wikimedia Commons
Bisto - CC BY-SA 3.0
Newell, Lloyd D., 1956-
Image from Wikimedia Commons
Brownson, Carleton L. (Carleton Lewis), 1866-1948
Image from Wikimedia Commons
Civil War glass negative collection (Library of Congress) - Public Domain
Lovell, Mansfield, 1822-1884
Image from Wikimedia Commons
Litho by Alexander Clemens Wetterling (1796-1858) from an original picture by Elias Martin Elias Martin (1739-1818). - Public Domain
Sergel, Johan Tobias, 1740-1814
Image from Wikimedia Commons
Doyle, Richard, 1824-1883
Image from Wikimedia Commons
Rosetta Reitz, Duke University - CC BY-SA 3.0
Reitz, Rosetta
Image from Wikimedia Commons
Congressional Portrait Collection (Library of Congress). - Public Domain
Derounian, Steven B. (Steven Boghos), 1918-2007
Image from Wikimedia Commons
Sebastian Le Clerc - Public Domain
Vitruvius Pollio
Image from Wikimedia Commons
file Jarda 75, en.wiki Stilltim, engraving ??? - Public Domain
Herrman, Augustine, 1621-1686
Image from Wikimedia Commons
Bain News Service photograph - Public Domain
Hewitt, Peter Cooper, 1861-1921
Image from Wikimedia Commons
Joseph Kriehuber Foto: :de:Peter Geymayer - Public Domain
Haidinger, Wilhelm, 1795-1871
Image from Wikimedia Commons
Burty, Frank, 1886-1971
Image from Wikimedia Commons
unknown - Public Domain
Wittenmyer, Annie, 1827-1900
Image from Wikimedia Commons
Cbl62 - CC BY 3.0
Jackson, Reggie
Image from Wikimedia Commons
Kopp, William Frederick, 1869-1938
Image from Wikimedia Commons
Kuhlau, Friedrich
Image from Wikimedia Commons
John Singer Sargent - Public Domain
Morris, Alice Vanderbilt
Image from Wikimedia Commons
unknown - Public Domain
Dārā Shikūh, Prince, son of Shahjahan, Emperor of India, 1615-1659
Image from Wikimedia Commons
Leeb, Wilhelm, Ritter von, 1876-1956
Image from Wikimedia Commons
unknown - Public Domain
Inchbold, John William, 1830-1888
Image from Wikimedia Commons
Mimi Thi Nguyen - CC BY-SA 2.0
Nguyen, Mimi Thi, 1974-....
Image from Wikimedia Commons
Georges Biard - CC BY-SA 3.0
Dern, Bruce
Image from Wikimedia Commons
7moxy7 - CC BY-SA 4.0
Eliot, Charles, 1859-1897
Image from Wikimedia Commons
Bouché, Louis, 1896-1969