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Not stated at source - Public Domain
Ctruongngoc - CC BY-SA 3.0
"Bassano Ltd, Royal Photographers" - Public Domain
U.S. Congress - Public Domain
From 1900's "Legislative History and Souvenir of Rhode Island, 1899 and 1900," compiled by William Harrison Taylor. - Public Domain
True, Alfred Charles, 1853-1929 - Publisher: Washington, U.S. Govt. print. off. - Public Domain
unknown<br/> - Public Domain
NASA - Public Domain
user at project - Public Domain
Samuel Hart - Public Domain
Public Domain
Schembri & Zahra, Malta - Public Domain
United States Government - Public Domain
Dietbert Keßler - Public Domain
Clinedinst Studio - Public Domain
unknown - Public Domain
James Presley Ball (1825-1904) - Public Domain
Colorado State Archives - Public Domain
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Not stated at source - Public Domain
Bennett, Henry Gordon, 1887-1962
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Ctruongngoc - CC BY-SA 3.0
Reichenbach, François -1993
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Fontanesi, Antonio, 1818-1882
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Soxhlet, Franz von
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"Bassano Ltd, Royal Photographers" - Public Domain
Vyner, Rajah of Sarawak, 1874-1963
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U.S. Congress - Public Domain
McCrery, Jim, 1949-
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From 1900's "Legislative History and Souvenir of Rhode Island, 1899 and 1900," compiled by William Harrison Taylor. - Public Domain
Sheffield, William P. (William Paine), 1857-1919
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True, Alfred Charles, 1853-1929 - Publisher: Washington, U.S. Govt. print. off. - Public Domain
True, Alfred Charles, 1853-1929
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unknown<br/> - Public Domain
Dula, Tom, 1843 or 1844-1868
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NASA - Public Domain
Chang-Díaz, Franklin R., 1950-
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user at project - Public Domain
Chance, Michael
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Samuel Hart - Public Domain
Roots, Logan Herbert, Bishop, 1870-1945
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Public Domain
Coffin, Charles Carleton, 1823-1896
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Johnston, Harriet Lane, 1830-1903
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Schembri & Zahra, Malta - Public Domain
Spratt, T. A. B. (Thomas Abel Brimage), 1811-1888
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United States Government - Public Domain
Christenberry, Herbert William, 1897-1975
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Dietbert Keßler - Public Domain
Weiss, Peter, 1916-1982
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Clinedinst Studio - Public Domain
Terrell, J. M. (Joseph Meriweather), 1861-1912
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Levee, John, 1924-
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unknown - Public Domain
Alexander, Cecil Frances, 1818-1895
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Budberg, Moura.
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unknown - Public Domain
Lotti, Antonio, -1740
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unknown - Public Domain
Williams, John S. (John Stuart), 1818-1898
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James Presley Ball (1825-1904) - Public Domain
Mantle, Lee, 1851-1934
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Hubbard, Gurdon Saltonstall, 1802-1886
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National Museum of Natural History (U.S.)
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Benacerraf, Baruj, 1920-2011
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Marcian, Emperor of the East, 392-457
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Colorado State Archives - Public Domain
Buchtel, Henry Augustus, 1847-1924
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Lukis, Frederick Corbin, 1788-1871