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Los Angeles Times - Public Domain
Jason Lam - CC BY-SA 2.0
Sasha Kopf - CC BY-SA 4.0
Alfred Stieglitz - Public Domain
Bazelon.org -
Mminsker - CC BY-SA 3.0
Army Signal Corps - Public Domain
Gage Skidmore - CC BY-SA 3.0
Photographer-Vandamm, New York - Public Domain
Civil War Photograph Collection, Library of Congress - Public Domain
Brianmcmillen - CC BY-SA 4.0
US gov - Public Domain
Harper's Weekly, (1860 Dec. 22). - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
anonymous - Public Domain
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Maxwell, James Clerk, 1831-1879
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Los Angeles Times - Public Domain
Boeing, William Edward, 1881-1956
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Jason Lam - CC BY-SA 2.0
Dobson, Sasha
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Sasha Kopf - CC BY-SA 4.0
Kopf, Silas, 1949-...
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Nicholas, Paul, 1945-
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Corral, Ramón 1854-1912
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Morton, Henry, 1836-1902
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Higgs, W. G. (William Guy), 1862-1951
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Cannon, James, 1864-1944
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Alfred Stieglitz - Public Domain
Marin, John, 1870-1953
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Bazelon.org -
Bazelon, David L. (David Lionel), 1909-
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Starr, Frederick, 1858-1933
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Mminsker - CC BY-SA 3.0
Bussard, Joe, 1936-
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Negri, Pola, 1899-1987
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Army Signal Corps - Public Domain
Hartle, Russell P. (Russell Peter), 1889-1961
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Gage Skidmore - CC BY-SA 3.0
Carson, Ben, 1951-
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Pearson, George, 1751-1828
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Photographer-Vandamm, New York - Public Domain
Hart, Moss, 1904-1961
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Nicolson, William, 1655-1727
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Duero, Manuel Gutiérrez de la Concha, marqués del, 1808-1874
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Civil War Photograph Collection, Library of Congress - Public Domain
Hatch, Edward, 1832-1889
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Brianmcmillen - CC BY-SA 4.0
Duvivier, George
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Montalivet, Marthe Camille Bachasson, comte de, 1801-1880
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Vámbéry, Ármin, 1832-1913
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US gov - Public Domain
Young, S. B. M. (Samuel Baldwin Marks), 1840-1924
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Harper's Weekly, (1860 Dec. 22). - Public Domain
McQueen, John, 1804-1867
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Mathew Brady Levin Corot Handy - Public Domain
Gallaudet, Thomas, 1822-1902
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Northcote, John, Sir, 1599-1676
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Muselier, Émile (1882-1965).
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anonymous - Public Domain
Duhamel, M. (Jean Marie Constant), 1797-1872