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One dead president - CC BY-SA 3.0
Stiizd - CC BY-SA 3.0
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James T. White & Company - Public Domain
user at project - Public Domain
Public Domain
Wstotler - CC BY 3.0
Charles Turner James Ramsay - Public Domain
George Grantham Bain Collection (Library of Congress) - Public Domain
Chi-Li Wong - CC BY-SA 4.0
Unbekannter Grafiker der Epoche. - Public Domain
w - Public Domain
unknown - Public Domain
Jeffrey Kluger is the owner and holder of sole exclusive copyright to the photo. - CC BY-SA 3.0
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Ohnesorge, Wilhelm, 1872-1962
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Maddux, Greg, 1966-
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Methot, Mayo, 1904-1951
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One dead president - CC BY-SA 3.0
Bang, Billy
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Walsh, William, 1663-1708
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Waverley, John Anderson, Viscount Westdean, 1883?-1958
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King, James, 1822-1856
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Hollerith, Herman, 1860-1929
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Stiizd - CC BY-SA 3.0
Cabral, Manuel del, 1907-1999
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Wright, J. Butler (Joshua Butler), 1877-1939
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Di Pietro, Antonio, 1950-....
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Smithsonian Institution -
Gordon, Isabella
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James T. White & Company - Public Domain
Hillyer, Junius, 1807-1886
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user at project - Public Domain
Frontini, F. Paolo (Francesco Paolo), 1860-1939
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Public Domain
Smith, H. Alexander (Howard Alexander), 1880-1966
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Campbell, William, 1959-
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Erskine, Charles, 1739-1811
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Wstotler - CC BY 3.0
Lenzi, Umberto, 1931-
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Charles Turner James Ramsay - Public Domain
Madocks, William Alexander, 1773-1828
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George Grantham Bain Collection (Library of Congress) - Public Domain
Sassoon, Philip, Sir, 1888-1939
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Chi-Li Wong - CC BY-SA 4.0
Atchity, Kenneth John.
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Smith, Clark Ashton, 1893-1961
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Chatfield, Andrew G. (Andrew Gould), 1810-1875
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Barlow, Thomas, Sir, 1845-1945
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Unbekannter Grafiker der Epoche. - Public Domain
Souvestre, Émile, 1806-1854
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Tuttle, A. Theodore (Albert Theodore), 1919-1986
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unknown - Public Domain
Wilms, J.W. (Johann Wilhelm), 1772-1847
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unknown - Public Domain
Drelincourt, Charles, 1595-1669
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Kent, Rockwell, 1882-1971
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Jeffrey Kluger is the owner and holder of sole exclusive copyright to the photo. - CC BY-SA 3.0
Kluger, Jeffrey.