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Mathew Brady - Public Domain
Robert Bianchi <br>Original uploader was LoreMariano - CC BY-SA 3.0
Joop van Bilsen - CC BY-SA 3.0
Tom Marcello - CC BY-SA 2.0
FrankieF - CC BY-SA 4.0
Signed by E. Billings. Most likely :en:Edwin Tryon Billings - Public Domain
NBC Radio by Ray Lee Jackson, NY. - Public Domain
United Press - Public Domain
Cmacauley - Public Domain
unknown - Public Domain
Studio of Peter Lely; - Public Domain
:en:Walter Greaves (artist) - Public Domain
Dauthage - Public Domain
Elmira (N.Y.) Morning Telegram - Public Domain
Mario Nunes Vais -
US gov - Public Domain
Arthur S. Goss - Public Domain
Staff Photographers - CC BY-SA 4.0
Javier López Bernardo - CC BY-SA 3.0
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Mathew Brady - Public Domain
Fry, James B. (James Barnet), 1827-1894
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Farley, James Thompson, 1829-1886
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Robert Bianchi <br>Original uploader was LoreMariano - CC BY-SA 3.0
Koppelman, Chaim, 1920-2009
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Szent-Györgyi, Albert, 1893-1986
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Joop van Bilsen - CC BY-SA 3.0
Oort, Jan Hendrik
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Tom Marcello - CC BY-SA 2.0
Cranshaw, Bob
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FrankieF - CC BY-SA 4.0
Modiano, Patrick, 1945-....
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Gregg, Judd, 1947-
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Signed by E. Billings. Most likely :en:Edwin Tryon Billings - Public Domain
Goodwin, Ichabod, 1794-1882
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NBC Radio by Ray Lee Jackson, NY. - Public Domain
Armbruster, Robert, 1896-1994
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United Press - Public Domain
McCarthy, Joseph, 1908-1957
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Clark, Charles Heber, 1841-1915
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Cmacauley - Public Domain
Hecht, Anthony, 1923-2004
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unknown - Public Domain
Munsell, A. H. (Albert Henry), 1858-1918
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Studio of Peter Lely; - Public Domain
Egerton, Thomas, Sir, 1540?-1617
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Tucker, Henry St. George, 1780-1848
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:en:Walter Greaves (artist) - Public Domain
Greaves, Walter, 1846-1930
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Dauthage - Public Domain
Tilgner, Victor Oskar
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Niles, John M. (John Milton), 1787-1856
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unknown - Public Domain
Zenzinov, V. (Vladimir), 1880-1953
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Elmira (N.Y.) Morning Telegram - Public Domain
Birdsall, Ausburn, -1903
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Mario Nunes Vais -
Stracciari, Riccardo
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US gov - Public Domain
Polanco Abreu, Santiago, 1920-1988
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Duparc, Henri, 1848-1933
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unknown - Public Domain
Grew, Mary, 1813-1896
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Körner, Christian Gottfried, 1756-1831
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Kind, Friedrich, 1768-1843
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Arthur S. Goss - Public Domain
Fairley, Barker, 1887-1986
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Staff Photographers - CC BY-SA 4.0
McVaugh, Rogers, 1909-2009
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Javier López Bernardo - CC BY-SA 3.0
Godley, Wynne.