Image from Wikimedia Commons
George Grantham Bain Collection (Library of Congress) - Public Domain
NBC Television - Public Domain
w:Miller Center of Public Affairs - CC BY 2.0
unknown - Public Domain
DubhEire - CC0 1.0
Smithsonian Institution -
Tjnorris - CC BY-SA 3.0
U.S. Naval Historical Center Photograph. - Public Domain
1-555-confide - CC BY 3.0
Source authored by Mary Polk Branch; image by unknown artist - Public Domain
National Photo Company, restored by Adam Cuerden - Public Domain
anonymous -
Image from Wikimedia Commons
George Grantham Bain Collection (Library of Congress) - Public Domain
Dane, Clemence.
Image from Wikimedia Commons
Chadwick, Henry, 1824-1908
Image from Wikimedia Commons
Beames, John, 1837-1902
Image from Wikimedia Commons
Polk, Frank L. (Frank Lyon), 1871-1943
Image from Wikimedia Commons
NBC Television - Public Domain
Coogan, Richard, 1914-
Image from Wikimedia Commons
Gerdil, Giacinto Sigismondo, 1718-1802
Image from Wikimedia Commons
Gregory, E. J. (Edward John), 1850-1909
Image from Wikimedia Commons
w:Miller Center of Public Affairs - CC BY 2.0
Hitz, Frederick Porter, 1939-
Image from Wikimedia Commons
Haya de la Torre, Víctor Rául 1895-1979
Image from Wikimedia Commons
unknown - Public Domain
Arndt, Johann, 1555-1621
Image from Wikimedia Commons
Böttiger, Karl August, 1760-1835
Image from Wikimedia Commons
DubhEire - CC0 1.0
Hone, Evie, 1894-1955
Image from Wikimedia Commons
Peano, Giuseppe, 1858-1932
Image from Wikimedia Commons
Smithsonian Institution -
Lloyd, Francis Ernest, 1868-1947
Image from Wikimedia Commons
Du Guesclin, Bertrand, comte de Longueville, approximately 1320-1380
Image from Wikimedia Commons
Tjnorris - CC BY-SA 3.0
Norris, T. J.
Image from Wikimedia Commons
unknown - Public Domain
Farmer, Moses G. (Moses Gerrish), 1820-1893
Image from Wikimedia Commons
unknown - Public Domain
Zilliacus, Konni, 1855-1924
Image from Wikimedia Commons
U.S. Naval Historical Center Photograph. - Public Domain
Reeves, Joseph Mason, 1872-1948
Image from Wikimedia Commons
Kosice, Gyula, 1924-....
Image from Wikimedia Commons
Crecquillon, Thomas, -1557?
Image from Wikimedia Commons
unknown - Public Domain
Margueritte, V. (Victor), 1866-1942
Image from Wikimedia Commons
1-555-confide - CC BY 3.0
Norris, David, 1944-
Image from Wikimedia Commons
Source authored by Mary Polk Branch; image by unknown artist - Public Domain
Branch, Lawrence O'B. (Lawrence O'Bryan), 1820-1862
Image from Wikimedia Commons
National Photo Company, restored by Adam Cuerden - Public Domain
Bronson, Ruth Muskrat, 1897-1982
Image from Wikimedia Commons
unknown - Public Domain
Alcock, John, 1715-1806
Image from Wikimedia Commons
anonymous -
Truc, Gonzague, 1877-1972
Image from Wikimedia Commons
Azara, José Nicolás de, marqués de Nibbiano, 1730 or 1731-1804
Image from Wikimedia Commons
Randolph, John, 1749-1813
Image from Wikimedia Commons
Oberholtzer, Sara Louisa, 1841-1930