Image from Wikimedia Commons
Not identified - Public Domain
Mingle MediaTV - CC BY-SA 2.0
unknown - Public Domain
Oldbeeg - CC BY-SA 3.0
Gorupdebesanez - CC BY-SA 3.0
Armineaghayan - CC BY-SA 4.0
BiblioArchives / LibraryArchives - CC BY 2.0
:en:Henry Jamison Handy -
Timtempleton - CC BY 3.0
Ray Jones, Universal Photo. - Public Domain
Public Domain
NASA - Public Domain
Fred Palumbo, World Telegram staff photographer - Public Domain
Chiloa - CC BY-SA 3.0
Michel-georges bernard - CC BY-SA 3.0
Bassano Ltd., 25 Old Bond Street , London, England. Given to the National Portrait Gallery by John Culme, 1996. - CC BY-SA 3.0
United States Congress - Public Domain
Image from Wikimedia Commons
Not identified - Public Domain
Giles, Herbert Allen, 1845-1935
Image from Wikimedia Commons
Mingle MediaTV - CC BY-SA 2.0
Young, John Sacret, 1947-
Image from Wikimedia Commons
unknown - Public Domain
Palmer, Joseph B. (Joseph Benjamin), 1825-1890
Image from Wikimedia Commons
Oldbeeg - CC BY-SA 3.0
Barr, Nevada.
Image from Wikimedia Commons
unknown - Public Domain
Hart, Thomas N. (Thomas Norton), 1829-
Image from Wikimedia Commons
Gorupdebesanez - CC BY-SA 3.0
Stirling, James (James Frazer)
Image from Wikimedia Commons
Riedel, Carl, 1827-1888
Image from Wikimedia Commons
Armineaghayan - CC BY-SA 4.0
Avedikian, Serge, 1955-....
Image from Wikimedia Commons
BiblioArchives / LibraryArchives - CC BY 2.0
Ogle, Charles, 1775-1858
Image from Wikimedia Commons
unknown - Public Domain
Codman, E. A. (Ernest Amory), 1869-1940
Image from Wikimedia Commons
Shaver, Billy Joe
Image from Wikimedia Commons
unknown - Public Domain
Tallard, Camille d'Hostun
Image from Wikimedia Commons
Delbrück, Max.
Image from Wikimedia Commons
:en:Henry Jamison Handy -
Thomas, Lowell, 1892-1981
Image from Wikimedia Commons
Timtempleton - CC BY 3.0
McGill, Ralph, 1898-1969
Image from Wikimedia Commons
Morton, John, 1725-1777
Image from Wikimedia Commons
Ray Jones, Universal Photo. - Public Domain
House, Billy, 1890-1961
Image from Wikimedia Commons
Mathis, June, 1892-1927
Image from Wikimedia Commons
unknown - Public Domain
Leusden, Johannes, 1624-1699
Image from Wikimedia Commons
Public Domain
Maclay, William, 1737-1804
Image from Wikimedia Commons
NASA - Public Domain
Whitaker, Ewen A. (Ewen Adair)
Image from Wikimedia Commons
Jorgensen, Joseph, 1844-1888
Image from Wikimedia Commons
Fred Palumbo, World Telegram staff photographer - Public Domain
Lasker, Mary
Image from Wikimedia Commons
Chiloa - CC BY-SA 3.0
Marchand, Jean, 1918-
Image from Wikimedia Commons
Brymner, William, 1855-1925
Image from Wikimedia Commons
Michel-georges bernard - CC BY-SA 3.0
Aveline, Claude, 1901-1992
Image from Wikimedia Commons
White, Doc, 1879-1969
Image from Wikimedia Commons
Bassano Ltd., 25 Old Bond Street , London, England. Given to the National Portrait Gallery by John Culme, 1996. - CC BY-SA 3.0
Maude, Margery, 1889-1979
Image from Wikimedia Commons
United States Congress - Public Domain
Mullin, Markwayne, 1977-
Image from Wikimedia Commons
Gouan, Antoine, 1733-1821