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U.S. National Park Service - Public Domain
unknown - Public Domain
Stozter - CC BY-SA 3.0
Gaston - Public Domain
William F. Cogswell - Public Domain
Michael Albov - CC BY 2.0
Photographer unknown. Subject (Hill) deceased. - Public Domain
Mabel Rowland Inc. - Public Domain
Beverly Rezneck - Public Domain
original uploader - Public Domain
Sir Joshua Reynolds - Public Domain
Harris & Ewing - Public Domain
Public Domain
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U.S. National Park Service - Public Domain
Walsh, Lawrence E.
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Maurey, Nicole, 1925-
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Watson, William, Sir, 1715-1787
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unknown - Public Domain
Chapman, George Henry, 1832-1882
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Bunn, Benjamin Hickman, 1844-1907
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unknown - Public Domain
Rusticucci, Girolamo
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Stozter - CC BY-SA 3.0
Kopelson, Kevin, 1960-....
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Gaston - Public Domain
Gray, William, 1810-1892
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Boyd, William, 1895-1972
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William F. Cogswell - Public Domain
Lewis, James T., 1819-1904
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Michael Albov - CC BY 2.0
Desanto, Sugar Pie
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Photographer unknown. Subject (Hill) deceased. - Public Domain
Hill, A. V. (Archibald Vivian), 1886-1977
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Mabel Rowland Inc. - Public Domain
Shields, Sydney, approximately 1888-1960
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Beverly Rezneck - Public Domain
Jackson, Thomas Penfield, 1937-2013
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original uploader - Public Domain
Belmont, Perry, 1850-1947
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Bingham, George Caleb, 1811-1879
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Gamsaxurdia, Zviad, 1939-1993
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Charas, Moyse, 1619-1698
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Steranko, 1938-
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Isakson, Johnny, 1944-
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Sir Joshua Reynolds - Public Domain
Vansittart, Henry, 1732-1770
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Harris & Ewing - Public Domain
Andrews, Fannie Fern, 1867-1950
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Public Domain
Jones, Sidney, 1861-1946
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Cunningham, Allan, 1784-1842
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Berliner, Emile, 1851-1929
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Sor, Fernando, 1778-1839
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Kimball, H. I. (Hannibal Ingalls), 1832-1895
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Public Domain
Guerrazzi, Francesco Domenico, 1804-1873
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Kesselring, Albert, 1885-1960
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Gauntlett, Henry J. (Henry John), 1805-1876