Image from Wikimedia Commons
Photographer unknown, included by Robert Logan Jack (subject of photo) in his book without attribution - Public Domain
Contemporary portrait - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
Public Domain
Stephencdickson - CC BY-SA 4.0
en - CC BY-SA 3.0
Photographer-Martha Swope, New York - Public Domain
unknown -
US Government Printing Office - Public Domain
Gage Skidmore photo from Flickr. - CC BY-SA 2.0
Georges Biard - CC BY-SA 3.0
NASA - Public Domain
New York World-Telegram and the Sun staff photographer - Public Domain
unknown - Public Domain
Federico de Madrazo-Biblioteca Nacional de España - CC BY-SA 4.0
U.S. Air Force Tech. Sgt. Adam M. Stump - Public Domain
Image from Wikimedia Commons
Conway, Tom, 1904-1967
Image from Wikimedia Commons
Prichard, James Cowles, 1786-1848
Image from Wikimedia Commons
Photographer unknown, included by Robert Logan Jack (subject of photo) in his book without attribution - Public Domain
Jack, Robert Logan, 1845-1921
Image from Wikimedia Commons
Kellogg, John Harvey, 1852-1943
Image from Wikimedia Commons
Contemporary portrait - Public Domain
Brown, John, 1722-1787
Image from Wikimedia Commons
Mathew Brady Levin Corot Handy - Public Domain
Brown, John Young, 1835-1904
Image from Wikimedia Commons
Public Domain
Mayhew, Jonathan, 1720-1766
Image from Wikimedia Commons
Stephencdickson - CC BY-SA 4.0
Alexander, Daniel Asher 1768-1846
Image from Wikimedia Commons
Talent, Jim, 1956-
Image from Wikimedia Commons
Amaury-Duval, 1808-1885
Image from Wikimedia Commons
en - CC BY-SA 3.0
Barkan, Yehuda
Image from Wikimedia Commons
Horniman, Annie Elizabeth Fredericka, 1860-1937
Image from Wikimedia Commons
Photographer-Martha Swope, New York - Public Domain
McArdle, Andrea
Image from Wikimedia Commons
Briggs, Charles F. (Charles Frederick), 1804-1877
Image from Wikimedia Commons
unknown -
Hill, Mirrie, 1892-1986
Image from Wikimedia Commons
US Government Printing Office - Public Domain
Aspinall, Wayne N.
Image from Wikimedia Commons
Gage Skidmore photo from Flickr. - CC BY-SA 2.0
Barton, David, 1954-
Image from Wikimedia Commons
Georges Biard - CC BY-SA 3.0
Guzmán, Luis (1957- ).
Image from Wikimedia Commons
Crean, Simon, 1949-
Image from Wikimedia Commons
NASA - Public Domain
Berg, Lodewijk van den, 1932-
Image from Wikimedia Commons
Hearne, Samuel, 1745-1792
Image from Wikimedia Commons
Public Domain
Blodgett, Rufus, 1834-1910
Image from Wikimedia Commons
Beck, Alfred 1886-1965
Image from Wikimedia Commons
New York World-Telegram and the Sun staff photographer - Public Domain
Walker, James John, 1881-1946
Image from Wikimedia Commons
unknown - Public Domain
Cunningham, Ann Pamela, 1816-1875
Image from Wikimedia Commons
Stettinius, Edward Reilly, 1865-1925
Image from Wikimedia Commons
Bedford, John Russell, Duke of, 1710-1771
Image from Wikimedia Commons
Federico de Madrazo-Biblioteca Nacional de España - CC BY-SA 4.0
Clemencín, Diego 1765-1834
Image from Wikimedia Commons
unknown - Public Domain
Overbeck, Julian Joseph, 1821-1905
Image from Wikimedia Commons
U.S. Air Force Tech. Sgt. Adam M. Stump - Public Domain
Fisher, Joely, 1967-