Image from Wikimedia Commons
unknown - Public Domain
unknown photographer - Public Domain
Pnuao - Public Domain
US National Library of Medicine, http://resource.nlm.nih.gov/101436257 . Per US NLB web site: "The National Library of Medicine believes this item to be in the public domain." - Public Domain
FrankieF - CC BY-SA 4.0
Federico Patellani -
Popular Graphic Arts - Public Domain
New York Public Library from a photograph by Underwood & Underwood, New York. [http://digitalgallery.nypl.org/nypldigital/dgdisplaylargemeta.cfm?strucID=134938&imageID=97363&word=Harry%20Emerson%20Fosdick&s=1¬word=&d=&c=&f=&lWord=&lField=&sScope=&sLevel=&sLabel=&num=0&imgs=12&total=1&pos=1] - Public Domain
US gov - Public Domain
Llywelyn2000 - CC BY-SA 4.0
Brady National Photographic Art Gallery (Washington, D.C.), photographer - Public Domain
George Cruikshank (27 September 1792 – 1 February 1878) - Public Domain
J. Pinto - Public Domain
Image from Wikimedia Commons
unknown - Public Domain
Stearns, Marcellus Lovejoy, 1839-1891
Image from Wikimedia Commons
Goldberg, Rube, 1883-1970
Image from Wikimedia Commons
unknown photographer - Public Domain
Flynn, Emmett, 1892-1937
Image from Wikimedia Commons
Pnuao - Public Domain
Sasakawa, Ryōichi, 1899-1995
Image from Wikimedia Commons
US National Library of Medicine, http://resource.nlm.nih.gov/101436257 . Per US NLB web site: "The National Library of Medicine believes this item to be in the public domain." - Public Domain
Barringer, Emily Dunning, 1876-1961
Image from Wikimedia Commons
Heine, Heinrich, 1797-1856
Image from Wikimedia Commons
Thompson, Bill, 1913-1971
Image from Wikimedia Commons
Chain, Ernst Boris, 1906-1979
Image from Wikimedia Commons
Puzos, Nicolas, 1686-1753
Image from Wikimedia Commons
Robertson, John, Sir, 1816-1891
Image from Wikimedia Commons
FrankieF - CC BY-SA 4.0
Modiano, Patrick, 1945-....
Image from Wikimedia Commons
Federico Patellani -
Maiuri, Amedeo, 1886-1963
Image from Wikimedia Commons
Popular Graphic Arts - Public Domain
Cooper, Mark A. (Mark Anthony), 1800-1885
Image from Wikimedia Commons
Hough, Emerson, 1857-1923
Image from Wikimedia Commons
New York Public Library from a photograph by Underwood & Underwood, New York. [http://digitalgallery.nypl.org/nypldigital/dgdisplaylargemeta.cfm?strucID=134938&imageID=97363&word=Harry%20Emerson%20Fosdick&s=1¬word=&d=&c=&f=&lWord=&lField=&sScope=&sLevel=&sLabel=&num=0&imgs=12&total=1&pos=1] - Public Domain
Fosdick, Harry Emerson, 1878-1969
Image from Wikimedia Commons
Lovén, Sven Ludvig, 1809-1895
Image from Wikimedia Commons
US gov - Public Domain
Naudain, Arnold, 1790-1872
Image from Wikimedia Commons
Hughes, Charles J. (Charles James), 1853-1911
Image from Wikimedia Commons
Llywelyn2000 - CC BY-SA 4.0
Lhuyd, Edward, 1660-1709
Image from Wikimedia Commons
Brady National Photographic Art Gallery (Washington, D.C.), photographer - Public Domain
Sumner, Edwin V. (Edwin Vose), 1797-1863
Image from Wikimedia Commons
Dock, Lavinia L., 1858-1956
Image from Wikimedia Commons
unknown - Public Domain
Kobold, Hermann, 1858-1942
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Packard, Jasper, 1832-1899
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Portland, Margaret Cavendish Holles Harley Bentinck, Duchess of, 1715-1785
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Fischer, Eduard
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Franzen, Jonathan
Image from Wikimedia Commons
Crawford, David Lindsay, Earl of, 1871-1940
Image from Wikimedia Commons
George Cruikshank (27 September 1792 – 1 February 1878) - Public Domain
Grimaldi, Joseph, 1779-1837
Image from Wikimedia Commons
J. Pinto - Public Domain
Chagas, Carlos, 1879-1934
Image from Wikimedia Commons
unknown - Public Domain
Erskine, John, 1879-1951