Image from Wikimedia Commons
unknown - Public Domain
unknown - CC BY-SA 4.0
Harris & Ewing -
Ctruongngoc - CC BY-SA 3.0
Moeller Talent, Nashville (management) - Public Domain
Marie-Alexandre Alophe - Public Domain
photographer not listed - Public Domain
Baki Péter: A Vasárnapi Újság metszői, rajzolói (1854-1921) - Public Domain
Cadmiumyellow - CC BY-SA 4.0
Philip Crellin - Public Domain
Felvegi Andrea -
Princeton University, courtesy Prof. Schwarzchild - CC BY-SA 3.0
Burton Williams (†1936) - Public Domain
Boston Public Library - Public Domain
author - Public Domain
Image from Wikimedia Commons
Prévost, Augustine, approximately 1725-1786
Image from Wikimedia Commons
unknown - Public Domain
Holstenius, Lucas, 1596-1661
Image from Wikimedia Commons
unknown - CC BY-SA 4.0
Casimir, John, Prince Of Anhalt-Dessau
Image from Wikimedia Commons
Shaw, Bernie
Image from Wikimedia Commons
Harris & Ewing -
Reed, Stanley Forman, 1884-1980
Image from Wikimedia Commons
Uccello, Paolo, 1397-1475
Image from Wikimedia Commons
Tchernichowsky, Saul, 1875-1943
Image from Wikimedia Commons
Ctruongngoc - CC BY-SA 3.0
Aung San Suu Kyi.
Image from Wikimedia Commons
Bergius, Friedrich, 1884-
Image from Wikimedia Commons
Savitt, Jan
Image from Wikimedia Commons
Moeller Talent, Nashville (management) - Public Domain
Dickens, Little Jimmy, 1920-
Image from Wikimedia Commons
Marie-Alexandre Alophe - Public Domain
Dancla, Charles
Image from Wikimedia Commons
Leavitt, Dudley, 1772-1851
Image from Wikimedia Commons
unknown - Public Domain
Conte, Silvio O.
Image from Wikimedia Commons
photographer not listed - Public Domain
Cummings, Clara E. (Clara Eaton), 1855-1906
Image from Wikimedia Commons
Baki Péter: A Vasárnapi Újság metszői, rajzolói (1854-1921) - Public Domain
Wagner, Alexander, 1838-1919
Image from Wikimedia Commons
Cadmiumyellow - CC BY-SA 4.0
Bowes, David, 1957-
Image from Wikimedia Commons
Philip Crellin - Public Domain
Davidson, Samuel, 1806-1898
Image from Wikimedia Commons
Trommsdorff, Johann Bartholomäus, 1770-1837
Image from Wikimedia Commons
unknown - Public Domain
Hopkins, Albert J. (Albert Jarvis), 1846-1922
Image from Wikimedia Commons
Zetkin, Klara, 1857-1933
Image from Wikimedia Commons
Felvegi Andrea -
Mann, Ed
Image from Wikimedia Commons
Princeton University, courtesy Prof. Schwarzchild - CC BY-SA 3.0
Schwarzschild, Martin
Image from Wikimedia Commons
unknown - Public Domain
Filson, John, approximately 1747-1788
Image from Wikimedia Commons
Burton Williams (†1936) - Public Domain
Kazee, Buell, 1900-1976
Image from Wikimedia Commons
Fox, Ruth May, 1853-1958
Image from Wikimedia Commons
Boston Public Library - Public Domain
Campanini, Italo
Image from Wikimedia Commons
author - Public Domain
Barry, John Decatur, 1839-1867
Image from Wikimedia Commons
Winter, Johnny
Image from Wikimedia Commons
McClellan, John Jasper, 1874-1925