Image from Wikimedia Commons
Rigmor Dahl Delphin - CC BY-SA 4.0
Bain - Public Domain
Camille Silvy - Public Domain
C. Neil Scott - CC BY 2.0
unknown - Public Domain
Frédéric-Auguste Cazals - Public Domain
US Federal Government (Congress) - Public Domain
Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Greg Hernandez at https://www.flickr.com/photos/greginhollywood/ - CC BY 2.0
Warburg1866 - CC BY-SA 4.0
Elena Torre - CC BY-SA 2.0
user at project - CC BY-SA 3.0
original uploader - Public Domain
Brianmcmillen - CC BY-SA 3.0
Columbia Broadcasting System-CBS. Note the recipient was Dell Publishing, who also applied a stamp to back. - Public Domain
Maine State Archives (Augusta, Maine) - Public Domain
0nbekend - Public Domain
Image from Wikimedia Commons
Rigmor Dahl Delphin - CC BY-SA 4.0
Caprino, Ivo, 1920-2001
Image from Wikimedia Commons
Bain - Public Domain
Gulick, Sidney Lewis, 1860-1945
Image from Wikimedia Commons
Dimnet, Ernest, 1866-1954
Image from Wikimedia Commons
Camille Silvy - Public Domain
Silvy, Camille-Léon-Louis, 1834-1910
Image from Wikimedia Commons
C. Neil Scott - CC BY 2.0
Maneri, Joe
Image from Wikimedia Commons
unknown - Public Domain
Lozada, Manuel, -1873
Image from Wikimedia Commons
Frédéric-Auguste Cazals - Public Domain
Bernède, Arthur, 1871-1937
Image from Wikimedia Commons
Devos, Raymond
Image from Wikimedia Commons
US Federal Government (Congress) - Public Domain
Eagleton, Thomas F., 1929-2007
Image from Wikimedia Commons
Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Ambler, Jacob A., 1829-1906
Image from Wikimedia Commons
Ut, Huynh Cong
Image from Wikimedia Commons
Greg Hernandez at https://www.flickr.com/photos/greginhollywood/ - CC BY 2.0
Dussault, Nancy
Image from Wikimedia Commons
unknown - Public Domain
Brumder, George, 1839-1910
Image from Wikimedia Commons
Warburg1866 - CC BY-SA 4.0
Neto, Ernesto, 1964-....
Image from Wikimedia Commons
Elena Torre - CC BY-SA 2.0
Pennac, Daniel
Image from Wikimedia Commons
user at project - CC BY-SA 3.0
Cavellini, Guglielmo Achille, 1914-
Image from Wikimedia Commons
Ponsonby, John, 1713-1789
Image from Wikimedia Commons
Rackman, Emanuel.
Image from Wikimedia Commons
original uploader - Public Domain
Williamson, Hugh, 1735-1819
Image from Wikimedia Commons
Brianmcmillen - CC BY-SA 3.0
Wilson, Gerald Stanley, 1918-2014
Image from Wikimedia Commons
unknown - Public Domain
Pellegrini, C. E. (Carlos Enrique), 1800-1875
Image from Wikimedia Commons
Ḥaydar Mīrzā, 1499 or 1500-1551
Image from Wikimedia Commons
Columbia Broadcasting System-CBS. Note the recipient was Dell Publishing, who also applied a stamp to back. - Public Domain
Nolan, Jeanette, 1911-1998
Image from Wikimedia Commons
Maine State Archives (Augusta, Maine) - Public Domain
Littlefield, Nathaniel Swett, 1804-1882
Image from Wikimedia Commons
Whitelocke, John, 1757-1833
Image from Wikimedia Commons
unknown - Public Domain
Coley, William Bradley, 1862-1936.
Image from Wikimedia Commons
Wettstein, Richard, Ritter von Westersheim, 1863-1931
Image from Wikimedia Commons
unknown - Public Domain
Avery, Isaac Erwin, 1828-1863
Image from Wikimedia Commons
0nbekend - Public Domain
Donizetti, Giuseppe, 1788-1856
Image from Wikimedia Commons
unknown - Public Domain
Chapman, Frank M. (Frank Michler), 1864-1945