Image from Wikimedia Commons
Mathew Brady - Public Domain
unknown - Public Domain
Lieven de Vogeleer - Public Domain
Charles Oberthur - Public Domain
A. J. Dusseau - Public Domain
anonymous -
Yale College (photographer unknown) - Public Domain
Soboky - CC BY-SA 4.0
Not stated - Public Domain
Associated Students, University of California, Los Angeles - Public Domain
J. Dörfler (1906 - 1907) Botaniker Porträts - Public Domain
Unknown government employee - CC0 1.0
Grafikirene - CC BY-SA 4.0
Chris7cn - CC BY-SA 3.0
Valerian Gribayedoff - Public Domain
Kosboot - CC BY-SA 3.0
Unknown - Public Domain
Kazimierz Wojniakowski - Public Domain
D.Korving - CC BY-SA 4.0
Image from Wikimedia Commons
Mathew Brady - Public Domain
Nelson, Samuel, 1792-1873
Image from Wikimedia Commons
Streep, Meryl
Image from Wikimedia Commons
unknown - Public Domain
Holmes, T. H. (Theophilus Hunter), 1804-1880
Image from Wikimedia Commons
Lieven de Vogeleer - Public Domain
Stewart, Matthew, Earl of Lennox, 1516-1571
Image from Wikimedia Commons
Charles Oberthur - Public Domain
Verity, Roger
Image from Wikimedia Commons
Cobb, Stanley, 1887-1968
Image from Wikimedia Commons
A. J. Dusseau - Public Domain
Hammond, Andrew B. (Andrew Benoni), 1848-1934
Image from Wikimedia Commons
Le Vau, Louis, 1612-1670
Image from Wikimedia Commons
anonymous -
Foster, Norman, 1900-1976
Image from Wikimedia Commons
Yale College (photographer unknown) - Public Domain
Benét, Stephen Vincent, 1898-1943
Image from Wikimedia Commons
National Zoological Park (U.S.)
Image from Wikimedia Commons
Duncan, Charles K. (Charles Kenny), 1911-1994
Image from Wikimedia Commons
Soboky - CC BY-SA 4.0
Mazuy, Patricia, 1960-....
Image from Wikimedia Commons
Not stated - Public Domain
Leyendecker, Frank X., 1877-1924
Image from Wikimedia Commons
Slayden, James Luther, 1853-1924
Image from Wikimedia Commons
Firpo, Roberto, 1884-1969
Image from Wikimedia Commons
Associated Students, University of California, Los Angeles - Public Domain
Cressey, Donald R. (Donald Ray), 1919-1987
Image from Wikimedia Commons
J. Dörfler (1906 - 1907) Botaniker Porträts - Public Domain
Fries, Theodor Magnus, 1832-1913
Image from Wikimedia Commons
Unknown government employee - CC0 1.0
Daniel, Price, 1941-1981
Image from Wikimedia Commons
Monselet, Charles, 1825-1888
Image from Wikimedia Commons
Grafikirene - CC BY-SA 4.0
Rösel, Peter, 1945-
Image from Wikimedia Commons
Chris7cn - CC BY-SA 3.0
Angélica María 1944-
Image from Wikimedia Commons
Madigan, Edward Rell, 1936-
Image from Wikimedia Commons
Valerian Gribayedoff - Public Domain
Loomis, Alfred L. (Alfred Lebbeus), 1831-1895
Image from Wikimedia Commons
Crémieux, Adolphe, 1796-1880
Image from Wikimedia Commons
Kosboot - CC BY-SA 3.0
Morse, Woolson
Image from Wikimedia Commons
Unknown - Public Domain
Jonson, Ben, 1573?-1637
Image from Wikimedia Commons
Kazimierz Wojniakowski - Public Domain
Kościuszko, Tadeusz, 1746-1817
Image from Wikimedia Commons
Vailati, Giovanni, 1863-1909
Image from Wikimedia Commons
D.Korving - CC BY-SA 4.0
Ankersmit, F.R.