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author - Public Domain
uploader was :de:Botaurus - Public Domain
not stated - Public Domain
Bain News Service, publisher - Public Domain
unknown - Public Domain
Mathew Brady - Public Domain
:Esby/credit - CC BY-SA 3.0
original uploader - Public Domain
JS Speakers - CC BY-SA 3.0
Public Domain
Franz Langhammer - Public Domain
Center on Wisconsin Strategy - CC BY 3.0
George Grantham Bain Collection (Library of Congress) - Public Domain
George R. Crooks - Public Domain
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Helmholtz, Hermann von 1821-1894
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Horsman, Edward, 1807-1876
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Lotto, Lorenzo, 1480?-1556?
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Cockrell, Thad
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Sgarbi, Vittorio
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author - Public Domain
Wallace, John Findley, 1852-1921
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uploader was :de:Botaurus - Public Domain
Möllhausen, Balduin, 1825-1905
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not stated - Public Domain
Guérin, Jules Vallée, 1866-1946
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Bain News Service, publisher - Public Domain
Dallinger, Frederick W. (Frederick William), 1871-
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Sweet, Burton Erwin, 1867-1957
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Martial
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Atwood, Robert B. (Robert Bruce), 1907-1997
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unknown - Public Domain
Jordan-Smith, Paul, 1885-1971
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unknown - Public Domain
Europe, James Reese, 1881-1919
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Mathew Brady - Public Domain
Bangs, Nathan, 1778-1862
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Adcock, Eddie
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:Esby/credit - CC BY-SA 3.0
Hara, Tetsuo, 1961-....
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original uploader - Public Domain
Sweatnam, Willis P. (Willis Palmer), 1854-1930
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Einthoven, Willem, 1860-1927
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Miles, Suzanne W.
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JS Speakers - CC BY-SA 3.0
Johnson, Charles, 1948-
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Public Domain
Hall, Ben, -1865
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Franz Langhammer - Public Domain
Bürckel, Josef, 1895-1944
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Center on Wisconsin Strategy - CC BY 3.0
Rogers, Joel, 1952-....
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Ney, Michel, duc d'Elchingen, 1769-1815
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Mariner, William, 1791-1853
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Public Domain
Mattocks, John, 1777-1847
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George Grantham Bain Collection (Library of Congress) - Public Domain
Diaghilev, Serge, 1872-1929
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George R. Crooks - Public Domain
McClintock, John, 1814-1870
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Price, Andrew, 1854-1909