Image from Wikimedia Commons
Dan Harasymchuk - CC BY-SA 4.0
* :File:John Collins Warren daguerreotype circa 1855.jpeg - Public Domain
:en:RAI - Public Domain
The Library of Congress - Public Domain
unknown - Public Domain
ProtoplasmaKid - CC BY-SA 3.0
:de:'ElLo57 - CC BY-SA 2.0
National Photo Company - Public Domain
anonymous - Public Domain
Photographer-Alexander Bender, New York - Public Domain
Public Domain
William Newton; H. Robinson - Public Domain
Bain - Public Domain
H. S. - Public Domain
original uploader - Public Domain
Image from Wikimedia Commons
Dall, John, 1918-1971
Image from Wikimedia Commons
Dan Harasymchuk - CC BY-SA 4.0
Rooke, Leon
Image from Wikimedia Commons
* :File:John Collins Warren daguerreotype circa 1855.jpeg - Public Domain
Warren, John Collins, 1778-1856
Image from Wikimedia Commons
:en:RAI - Public Domain
Mardel, Guy 1944-....
Image from Wikimedia Commons
Cicognara, Leopoldo, conte, 1767-1834
Image from Wikimedia Commons
The Library of Congress - Public Domain
Gates, Eleanor, 1875-1951
Image from Wikimedia Commons
Fyans, Foster, 1790-1870
Image from Wikimedia Commons
unknown - Public Domain
Goold-Adams, Hamilton John, Sir, 1858-1920
Image from Wikimedia Commons
unknown - Public Domain
Civiale, Docteur (Jean), 1792-1867.
Image from Wikimedia Commons
ProtoplasmaKid - CC BY-SA 3.0
Bulteau, Michel.
Image from Wikimedia Commons
Carew, Rod, 1945-
Image from Wikimedia Commons
:de:'ElLo57 - CC BY-SA 2.0
Stewart, Dave
Image from Wikimedia Commons
National Photo Company - Public Domain
Nelson, John Edward, 1874-1955
Image from Wikimedia Commons
anonymous - Public Domain
Williams, Charles D. (Charles David), 1860-1923
Image from Wikimedia Commons
Le Chatelier, Henri, 1850-1936
Image from Wikimedia Commons
Milam, Benjamin Rush, 1788-1835
Image from Wikimedia Commons
Jackson, John, 1811-1885
Image from Wikimedia Commons
Photographer-Alexander Bender, New York - Public Domain
Lockhart, June, 1925-
Image from Wikimedia Commons
May, Thomas Erskine, 1815-1886
Image from Wikimedia Commons
Public Domain
Garcelon, Alonzo, 1813-1906
Image from Wikimedia Commons
William Newton; H. Robinson - Public Domain
Baillie, Joanna, 1762-1851
Image from Wikimedia Commons
Bain - Public Domain
Hackett, Charles, 1889-1942
Image from Wikimedia Commons
Preston, William, 1742-1818
Image from Wikimedia Commons
Humphreys, F. (Frederick), 1816-1900
Image from Wikimedia Commons
H. S. - Public Domain
Waagen, Gustav Friedrich, 1794-1868
Image from Wikimedia Commons
original uploader - Public Domain
Walker, Edmund, Sir, 1848-1924
Image from Wikimedia Commons
Oswald, Eugène 1826-1912
Image from Wikimedia Commons
Shōji, Tarō, 1898-1972
Image from Wikimedia Commons
Ludlow, Fitz Hugh, 1836-1870
Image from Wikimedia Commons
Tyrwhitt, Thomas, 1730-1786