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Stephencdickson - CC BY-SA 4.0
Porter Hovey at http://www.porterhovey.com/ - CC BY-SA 3.0
Nationaal Archief, Den Haag, Rijksfotoarchief: Fotocollectie Algemeen Nederlands Fotopersbureau (ANEFO), 1945-1989 - negatiefstroken zwart/wit, nummer toegang 2.24.01.05, bestanddeelnummer 922-0717 - CC BY-SA 3.0
Cecil Aldin (1870-1935) - Public Domain
unknown - Public Domain
Ssr - CC BY-SA 3.0
Unattributed - Public Domain
*:File:Tdb-at-yellowstone-2002.jpg - CC BY-SA 3.0
DrJackAndrews - CC BY-SA 3.0
RCA Records - Public Domain
SMU Central University Libraries -
Florenus - Public Domain
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Brecker, Michael
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Earle, George H. (George Howard), 1856-1928
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Castro, Raúl H. (Raúl Héctor), 1916-2015
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Stephencdickson - CC BY-SA 4.0
Dunbar, George, 1774-1851
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Hodes, Art, 1904-1993
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Porter Hovey at http://www.porterhovey.com/ - CC BY-SA 3.0
Casebere, James
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Nationaal Archief, Den Haag, Rijksfotoarchief: Fotocollectie Algemeen Nederlands Fotopersbureau (ANEFO), 1945-1989 - negatiefstroken zwart/wit, nummer toegang 2.24.01.05, bestanddeelnummer 922-0717 - CC BY-SA 3.0
Eyskens, Gaston, 1905-
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Cecil Aldin (1870-1935) - Public Domain
Aldin, Cecil, 1870-1935
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unknown - Public Domain
Browning, Jonathan, 1805-1879
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Karoline Luise, Grand Duchess, consort of Charles Frederick, Grand Duke of Baden, 1723-1783
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Burgoyne, John, 1722-1792
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Ssr - CC BY-SA 3.0
Rashid, Karim, 1960-....
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Unattributed - Public Domain
Lazzari, Sylvio
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unknown - Public Domain
Nicholson, Meredith, 1866-1947
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*:File:Tdb-at-yellowstone-2002.jpg - CC BY-SA 3.0
Brock, Thomas D.
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DrJackAndrews - CC BY-SA 3.0
Rovenstine, Emery Andrew, 1895-1960
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RCA Records - Public Domain
Mann, Barry
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Schiødte, J. C. (Jørgen Matthias Christian), 1815-1884
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unknown - Public Domain
Holker, John, 1719-1786
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SMU Central University Libraries -
McCarthy, Carlton, 1847-1936
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Folsey, George J., 1898-1988
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unknown - Public Domain
James, M.R. (Montague Rhodes), 1862-1936
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Florenus - Public Domain
Brengola, Riccardo
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Smyth, James Carmichael, Sir, 1779-1838
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Heister, Lorenz, 1683-1758
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Peale, Titian Ramsay, 1799-1885
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Gamsaxurdia, Zviad, 1939-1993
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Judd, A. F. (Albert Francis), 1874-1939
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Biondi, Ernesto
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Riis, Jacob A. (Jacob August), 1849-1914