Image from Wikimedia Commons
Herbert Rose Barraud - Public Domain
unknown - Public Domain
author - Public Domain
original uploader - Public Domain
Public Domain
Estrella Díaz - Public Domain
Unknown: credited to "NOAA" - Public Domain
Los Angeles Times - CC BY-SA 3.0
MichaelNetzer - CC BY-SA 3.0
Wilhelm Titel - Public Domain
Lithograph Georg Ludwig Engelbach (* 28. Februar 1817, † 4. Dezember 1894), Zandera/ penarc - Public Domain
original uploader -
Rtsanderson - CC BY-SA 3.0
Image from Wikimedia Commons
Herbert Rose Barraud - Public Domain
Hallé, Charles, 1819-1895
Image from Wikimedia Commons
unknown - Public Domain
Storer, Maria Longworth, 1849-1932
Image from Wikimedia Commons
Asafʹev, B. V. (Boris Vladimirovich), 1884-1949
Image from Wikimedia Commons
author - Public Domain
Davis, Jefferson Columbus, 1828-1879
Image from Wikimedia Commons
original uploader - Public Domain
Carlyle, Alexander, 1722-1805
Image from Wikimedia Commons
original uploader - Public Domain
Gzowski, C. S. (Casimir Stanislaus), Sir, 1813-1898
Image from Wikimedia Commons
Sagredo, Nicolo
Image from Wikimedia Commons
Lutgardis, Saint, 1182-1246
Image from Wikimedia Commons
Bellessi, Diana, 1946-....
Image from Wikimedia Commons
Public Domain
Burke, Bernard, 1814-1892
Image from Wikimedia Commons
Estrella Díaz - Public Domain
Quiñones, Samuel R.
Image from Wikimedia Commons
Unknown: credited to "NOAA" - Public Domain
Alden, James, 1810-1877
Image from Wikimedia Commons
Los Angeles Times - CC BY-SA 3.0
Chandler, Harry, 1864-1944
Image from Wikimedia Commons
MichaelNetzer - CC BY-SA 3.0
Cockrum, Dave, 1943-2006
Image from Wikimedia Commons
Wilhelm Titel - Public Domain
Weigel, Christian Ehrenfried, 1748-1831
Image from Wikimedia Commons
Wilson, James, 1795-1856
Image from Wikimedia Commons
Lithograph Georg Ludwig Engelbach (* 28. Februar 1817, † 4. Dezember 1894), Zandera/ penarc - Public Domain
Koch, Karl Heinrich Emil, 1809-1879
Image from Wikimedia Commons
Appleton, Samuel, 1766-1853
Image from Wikimedia Commons
Public Domain
Graves, William Sidney, 1865-1940
Image from Wikimedia Commons
Farnese, Alessandro, 1520-1589
Image from Wikimedia Commons
unknown - Public Domain
Campbell, John C. (John Charles), 1867-1919
Image from Wikimedia Commons
Fell, John, 1625-1686
Image from Wikimedia Commons
Clement VII, Antipope, 1342-1394
Image from Wikimedia Commons
Agassiz, Alexander, 1835-1910
Image from Wikimedia Commons
unknown - Public Domain
Muspratt, Sheridan, 1821-1871
Image from Wikimedia Commons
original uploader -
Bohm, David, 1917-1992
Image from Wikimedia Commons
Rtsanderson - CC BY-SA 3.0
Butterfield, Paul
Image from Wikimedia Commons
unknown - Public Domain
Naef, Adolf
Image from Wikimedia Commons
Carafa, Carlo, approximately 1517-1561
Image from Wikimedia Commons
Moore, Decima, 1871-1964