Image from Wikimedia Commons
Hermann Walter (1838–1909) - Public Domain
George Grantham Bain Collection (Library of Congress) - Public Domain
Photographer unidentified - Public Domain
Joop van Bilsen (ANEFO) - CC BY-SA 3.0
unknown - Public Domain
Photographer not named. PD-Norway50 - Public Domain
Unidentified (''Michiganensian'' is the University of Michigan yearbook published by University of Michigan) - Public Domain
aroid - CC BY 2.0
Nicolas Regnesson - Public Domain
Linfra - CC BY-SA 3.0
NPS - Public Domain
Smithsonian Institution -
Peter S. Duval after Albert Newsam - Public Domain
Nightscream - CC BY 3.0
Image from Wikimedia Commons
Wouters, Rik, 1882-1916
Image from Wikimedia Commons
Hermann Walter (1838–1909) - Public Domain
Zweifel, Paul, 1848-1927
Image from Wikimedia Commons
Fricsay, Ferenc
Image from Wikimedia Commons
George Grantham Bain Collection (Library of Congress) - Public Domain
Meštrović, Ivan, 1883-1962
Image from Wikimedia Commons
Photographer unidentified - Public Domain
Woolley, Celia Parker, 1848-1918
Image from Wikimedia Commons
Woodward, R. B. (Robert Burns), 1917-1979
Image from Wikimedia Commons
Joop van Bilsen (ANEFO) - CC BY-SA 3.0
Jonckheere, Karel, 1906-1993
Image from Wikimedia Commons
Allacci, Leone, 1586-1669
Image from Wikimedia Commons
Bowes, John Bowes, Baron, 1690-1767
Image from Wikimedia Commons
unknown - Public Domain
Wharton, Gabriel Colvin, 1824-1906
Image from Wikimedia Commons
Photographer not named. PD-Norway50 - Public Domain
Sverdrup, H.U. (Harald Ulrik), 1888-1957
Image from Wikimedia Commons
Unidentified (''Michiganensian'' is the University of Michigan yearbook published by University of Michigan) - Public Domain
Hopkins, Clark, 1895-1976
Image from Wikimedia Commons
Seiffert, Peter
Image from Wikimedia Commons
aroid - CC BY 2.0
Burle-Marx, Roberto, 1909-1994
Image from Wikimedia Commons
Smith, Staniforth, 1869-1934
Image from Wikimedia Commons
Nicolas Regnesson - Public Domain
Mello, Francisco Manuel de 1608-1666
Image from Wikimedia Commons
Linfra - CC BY-SA 3.0
Gausachs, Josep, 1889-1959
Image from Wikimedia Commons
NPS - Public Domain
Pratt, Wallace Everette, 1885-1981
Image from Wikimedia Commons
Tokugawa, Iesato, 1863-1940
Image from Wikimedia Commons
Rohan, Armand-Gaston-Maximilien de, 1674-1749
Image from Wikimedia Commons
Mayr, Simon, 1763-1845
Image from Wikimedia Commons
Gordon, A. J. (Adoniram Judson), 1836-1895
Image from Wikimedia Commons
Louvois, François-Michel Le Tellier, marquis de, 1641-1691
Image from Wikimedia Commons
Smithsonian Institution -
Bernstein, Theresa
Image from Wikimedia Commons
Celtis, Konrad, 1459-1508
Image from Wikimedia Commons
Peter S. Duval after Albert Newsam - Public Domain
Stewart, Charles, 1778-1869
Image from Wikimedia Commons
Nightscream - CC BY 3.0
Hasen, Irwin, 1918-
Image from Wikimedia Commons
Mihailo III, Prince of Serbia, 1823-1868
Image from Wikimedia Commons
Carver, Raymond, 1938-1988
Image from Wikimedia Commons
Powers, Francis, 1865-1940