Image from Wikimedia Commons
not listed - Public Domain
Boston Globe - Public Domain
Jan Caspar Philips Simon Fokke - Public Domain
unknown - Public Domain
Credited to Fotografie Fils d'Alexandria, Rome; restored by uploader - Public Domain
Johnstone, O'Shannessy & Co. - Public Domain
Vogler - CC BY-SA 4.0
James Faed, after w:Francis Grant (artist) - Public Domain
Gage Skidmore - CC BY-SA 3.0
Першаков, Александр Фёдорович. 1843-после 1905 -
SMU Central University Libraries -
Nederlands Instituut voor Beeld en Geluid - CC BY-SA 3.0
NA - Public Domain
Gorupdebesanez - CC BY-SA 3.0
Image from Wikimedia Commons
Root, John Wellborn, 1850-1891
Image from Wikimedia Commons
not listed - Public Domain
Bigelow, Edward Manning, 1850-1916
Image from Wikimedia Commons
Shemi︠a︡kin, Mikhail, 1943-
Image from Wikimedia Commons
George, Heinrich, 1893-1946
Image from Wikimedia Commons
Boston Globe - Public Domain
Drum, Hugh Aloysius, 1879-1951
Image from Wikimedia Commons
Maffei, Paolo Alessandro, 1653-1716
Image from Wikimedia Commons
Jan Caspar Philips Simon Fokke - Public Domain
Braght, Thieleman J. van (Thieleman Janszoon), 1625-1664
Image from Wikimedia Commons
Baillie, Matthew, 1761-1823
Image from Wikimedia Commons
unknown - Public Domain
Chetham, Humphrey, 1580-1653
Image from Wikimedia Commons
Foraker, Joseph Benson, 1846-1917
Image from Wikimedia Commons
Credited to Fotografie Fils d'Alexandria, Rome; restored by uploader - Public Domain
Lubin, David, 1849-1919
Image from Wikimedia Commons
Rodman, Peter W.
Image from Wikimedia Commons
Rafty, Tony, 1915-
Image from Wikimedia Commons
Johnstone, O'Shannessy & Co. - Public Domain
Hodgkinson, Clement, approximately 1818-1893
Image from Wikimedia Commons
Vogler - CC BY-SA 4.0
Ralph, Bo
Image from Wikimedia Commons
Gilbert, John, 1897-1936
Image from Wikimedia Commons
James Faed, after w:Francis Grant (artist) - Public Domain
Lockhart, J.G. (John Gibson), 1794-1854
Image from Wikimedia Commons
Gage Skidmore - CC BY-SA 3.0
Lundgren, Dolph, 1959-
Image from Wikimedia Commons
Stevens, Lillian M. N. Ames, 1844-1914
Image from Wikimedia Commons
Gao, Zhisen, 1958-
Image from Wikimedia Commons
Першаков, Александр Фёдорович. 1843-после 1905 -
Wrangel, Ferdinand Petrovich, baron, 1796-1870
Image from Wikimedia Commons
Animuccia, Giovanni, -1571
Image from Wikimedia Commons
SMU Central University Libraries -
McCarthy, Carlton, 1847-1936
Image from Wikimedia Commons
Brian, David, 1914-1993
Image from Wikimedia Commons
Nederlands Instituut voor Beeld en Geluid - CC BY-SA 3.0
Granpré Molière, M.J. 1883-1972
Image from Wikimedia Commons
NA - Public Domain
Sclater, William Lutley
Image from Wikimedia Commons
Tucker, Benjamin Ricketson, 1854-1939
Image from Wikimedia Commons
Gorupdebesanez - CC BY-SA 3.0
Amelio, Gianni
Image from Wikimedia Commons
Smith, Hezekiah Bradley, 1816-1887
Image from Wikimedia Commons
Wade, David, 1911-1990