Image from Wikimedia Commons
Foster's Photographic Gallery, Richmond VA - Public Domain
unknown -
Karel Kuklík - CC BY-SA 3.0
original uploader - Public Domain
janinsanfran - CC BY-SA 2.0
Rockzilla5150 - CC BY-SA 3.0
J. Stuart Blackton Feature Pictures / Vitagraph - Public Domain
Public Domain
Timothy H. O'Sullivan - Public Domain
Lithographer: Antoine Maurin. Publisher: Rosselin (Paris) - Public Domain
Albrecht Dürer - Public Domain
David Orban - CC BY 2.0
Bobrowen - CC BY 3.0
John Thomas (1838-1905) circa 1885 - CC BY-SA 2.0
unknown - Public Domain
Billmckern - CC BY-SA 4.0
Image from Wikimedia Commons
Foster's Photographic Gallery, Richmond VA - Public Domain
Braxton, A. Caperton (Allen Caperton), 1862-1914
Image from Wikimedia Commons
Truth, Sojourner, 1799-1883
Image from Wikimedia Commons
Popiełuszko, Jerzy, 1947-1984
Image from Wikimedia Commons
Fustel de Coulanges, 1830-1889
Image from Wikimedia Commons
unknown -
Delsarte, Jean
Image from Wikimedia Commons
Karel Kuklík - CC BY-SA 3.0
Zrzavý, Jan
Image from Wikimedia Commons
Whelan, Michael, 1950-
Image from Wikimedia Commons
original uploader - Public Domain
Vancouver Expo '86.
Image from Wikimedia Commons
Salzman, Eric
Image from Wikimedia Commons
janinsanfran - CC BY-SA 2.0
Robinson, V. Gene, 1947-
Image from Wikimedia Commons
Rockzilla5150 - CC BY-SA 3.0
McGinty, Garnie William
Image from Wikimedia Commons
J. Stuart Blackton Feature Pictures / Vitagraph - Public Domain
Dean, Louis, 1876-1933
Image from Wikimedia Commons
Public Domain
McDonald, Lawrence Patton
Image from Wikimedia Commons
Shore, Howard
Image from Wikimedia Commons
Alpini, Prosper, 1553-1617
Image from Wikimedia Commons
López, Carlos Antonio 1792-1862
Image from Wikimedia Commons
Rothschild, Lionel Nathan de, Baron, 1808-1879
Image from Wikimedia Commons
Dill, John, Sir, 1881-1944
Image from Wikimedia Commons
Timothy H. O'Sullivan - Public Domain
Waud, Alfred R. (Alfred Rudolph), 1828-1891
Image from Wikimedia Commons
Lithographer: Antoine Maurin. Publisher: Rosselin (Paris) - Public Domain
Brambilla, Teresa
Image from Wikimedia Commons
Albrecht Dürer - Public Domain
Stabius, Johannes, 1450-1522
Image from Wikimedia Commons
David Orban - CC BY 2.0
Drexler, K. Eric.
Image from Wikimedia Commons
Bobrowen - CC BY 3.0
Kahn, David, 1930-....
Image from Wikimedia Commons
Macgregor, Joanna
Image from Wikimedia Commons
John Thomas (1838-1905) circa 1885 - CC BY-SA 2.0
Morris-Jones, John, 1864-1929
Image from Wikimedia Commons
unknown - Public Domain
Kim, So-wŏl, 1903-1934
Image from Wikimedia Commons
Public Domain
Holt, Rush Dew, 1905-1955
Image from Wikimedia Commons
Billmckern - CC BY-SA 4.0
Colglazier, Robert W. (Robert Wesley), 1904-1993
Image from Wikimedia Commons
Key, Philip Barton, 1818-1859
Image from Wikimedia Commons
Widener, Joseph E. (Joseph Early), 1872-1943