Image from Wikimedia Commons
unknown -
Diario de Madrid - CC BY 4.0
Alan Light - CC BY 2.0
Masha Kuvshinova at https://www.flickr.com/photos/kuvshinova/ - CC BY 3.0
Arnolfo di Cambio - Public Domain
48states - Public Domain
Bryn Mawr College - Public Domain
IssamBarhoumi - CC BY-SA 4.0
Mystic Meg - CC BY-SA 3.0
Harris & Ewing - Public Domain
Charles Hudson, Continued to 1912 by the Lexington Historical Society - Public Domain
Public Domain
unknown - Public Domain
Gage Skidmore - CC BY-SA 3.0
grgbrwn - CC BY 2.0
Unknown - subject born 1853, d. 1926. This is c. 1910? -
Srivandra Gunanda - Public Domain
Contemporary photograph - Public Domain
White House photo - Public Domain
Jules Pizzetta - Public Domain
US Center of Military History - Public Domain
Bain - CC BY-SA 4.0
Image from Wikimedia Commons
unknown -
Nalé Roxlo, Conrado, 1898-
Image from Wikimedia Commons
Diario de Madrid - CC BY 4.0
Bordes, Juan, 1948-
Image from Wikimedia Commons
Alan Light - CC BY 2.0
Bergen, Candice, 1946-....
Image from Wikimedia Commons
Masha Kuvshinova at https://www.flickr.com/photos/kuvshinova/ - CC BY 3.0
Pak, Chʻan-uk, 1963-
Image from Wikimedia Commons
Arnolfo di Cambio - Public Domain
Boniface VIII, Pope, -1303
Image from Wikimedia Commons
48states - Public Domain
Robbins, Tom.
Image from Wikimedia Commons
Phelips, Robert, 1586?-1638
Image from Wikimedia Commons
Oberth, Hermann, 1894-1989
Image from Wikimedia Commons
Bryn Mawr College - Public Domain
Hooker, Edith Houghton, 1879-1948
Image from Wikimedia Commons
IssamBarhoumi - CC BY-SA 4.0
Erlanger, Rodolphe, baron d', 1872-1932
Image from Wikimedia Commons
Mystic Meg - CC BY-SA 3.0
Carr, Bernard, 1949-
Image from Wikimedia Commons
Harris & Ewing - Public Domain
Dempsey, Stephen Wallace, 1862-1949
Image from Wikimedia Commons
Loraine, Robert, 1876-1935
Image from Wikimedia Commons
Charles Hudson, Continued to 1912 by the Lexington Historical Society - Public Domain
Hudson, Charles, 1795-1881
Image from Wikimedia Commons
Public Domain
Aram, Eugene, 1704-1759
Image from Wikimedia Commons
unknown - Public Domain
Battistini, Mattia, 1856-1928
Image from Wikimedia Commons
Gage Skidmore - CC BY-SA 3.0
West, Adam, 1928-
Image from Wikimedia Commons
grgbrwn - CC BY 2.0
Anderson, Sparky, 1934-2010
Image from Wikimedia Commons
Unknown - subject born 1853, d. 1926. This is c. 1910? -
Postgate, J.P. (John Percival), 1853-1926
Image from Wikimedia Commons
Srivandra Gunanda - Public Domain
Purandaradāsa 1484-1564
Image from Wikimedia Commons
Contemporary photograph - Public Domain
Torrey, R.A. (Reuben Archer), 1856-1928
Image from Wikimedia Commons
Medici, Lorenzo de', 1492-1519
Image from Wikimedia Commons
Bourke, John Gregory, 1846-1896
Image from Wikimedia Commons
Public Domain
Jackson, William Henry, 1843-1942
Image from Wikimedia Commons
White House photo - Public Domain
Colson, Charles W.
Image from Wikimedia Commons
Vogel von Vogelstein, Carl Christian, 1788-1868
Image from Wikimedia Commons
Jules Pizzetta - Public Domain
Réaumur, René-Antoine Ferchault de, 1683-1757
Image from Wikimedia Commons
US Center of Military History - Public Domain
Morgan, Wallace
Image from Wikimedia Commons
Larrea, Juan
Image from Wikimedia Commons
Bain - CC BY-SA 4.0
Record, George L. (George Lawrence), 1859-1933