Image from Wikimedia Commons
Julian Vannerson (1827-1875) - Public Domain
Бродовский Роман Флорович - Public Domain
Charlesdrakew - Public Domain
anonymous - Public Domain
Don Hamerman - CC BY 3.0
:Jmabel - CC BY 3.0
Omaislam - CC BY-SA 4.0
A. Louis Mojonier - Public Domain
Original uploader was Wowaconia - Public Domain
Unknown (Bain News Service, publisher) - Public Domain
https://www.flickr.com/photos/jmrosenfeld/ - CC BY 2.0
unknown photographer - Public Domain
Public Domain
Thomas Gladysz - CC BY 3.0
unknown -
unknown engraver - Public Domain
Paul Thompson - Public Domain
Image from Wikimedia Commons
Makin, Norman John Oswald, 1889-1982
Image from Wikimedia Commons
Julian Vannerson (1827-1875) - Public Domain
Davidson, Thomas G. (Thomas Green), 1805-1883
Image from Wikimedia Commons
Бродовский Роман Флорович - Public Domain
Goedicke, Alexander
Image from Wikimedia Commons
Charlesdrakew - Public Domain
Akroyd, Edward, 1810-1887
Image from Wikimedia Commons
Pichegru, Charles, 1761-1804
Image from Wikimedia Commons
anonymous - Public Domain
Duhamel, M. (Jean Marie Constant), 1797-1872
Image from Wikimedia Commons
Moon, G. Washington (George Washington), 1823-1909
Image from Wikimedia Commons
Smith, Benjamin, 1756-1826
Image from Wikimedia Commons
Reed, James Frazier, 1800-1874
Image from Wikimedia Commons
Don Hamerman - CC BY 3.0
Woese, Carl R.
Image from Wikimedia Commons
Santa Anna, Antonio López de, 1794?-1876
Image from Wikimedia Commons
:Jmabel - CC BY 3.0
Heat-Moon, William Least
Image from Wikimedia Commons
Tingey, Thomas, 1750-1829
Image from Wikimedia Commons
Omaislam - CC BY-SA 4.0
Ibn Qayyim al-Jawzīyah, Muḥammad ibn Abī Bakr, 1292-1350
Image from Wikimedia Commons
A. Louis Mojonier - Public Domain
Whitman, Gayne
Image from Wikimedia Commons
Original uploader was Wowaconia - Public Domain
Arce, Aniceto, 1824-1906
Image from Wikimedia Commons
Morrill, E. N. (Edmund Needham), 1834-1909
Image from Wikimedia Commons
Unknown (Bain News Service, publisher) - Public Domain
Tardieu, André, 1876-1945
Image from Wikimedia Commons
Ray, Nicholas, 1911-1979
Image from Wikimedia Commons
https://www.flickr.com/photos/jmrosenfeld/ - CC BY 2.0
Kerr, Steve, 1965-
Image from Wikimedia Commons
unknown photographer - Public Domain
Kalbeck, Max, 1850-1921
Image from Wikimedia Commons
Huston, Walter, 1884-1950
Image from Wikimedia Commons
Public Domain
Mooney, Thomas J., 1882-1942
Image from Wikimedia Commons
Briçonnet, Guillaume, 1445-1514
Image from Wikimedia Commons
Thomas Gladysz - CC BY 3.0
Petaja, Emil, 1915-2000
Image from Wikimedia Commons
Harkavy, Alexander, 1863-1939
Image from Wikimedia Commons
unknown -
Kluyver, A.J. (Albert Jan), 1888-1956
Image from Wikimedia Commons
Bérat, Frédéric, 1801-1855
Image from Wikimedia Commons
unknown engraver - Public Domain
Barbon, Praisegod, 1596?-1679
Image from Wikimedia Commons
Paul Thompson - Public Domain
Heckscher, August