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Gage Skidmore - CC BY-SA 3.0
Saturnino Herrán - Public Domain
Will H. Lowe - Public Domain
U.S. Congress - Public Domain
James Rementer - CC BY 3.0
Hans Pinn - Public Domain
United States Government - Public Domain
Bertha Howell - Public Domain
The Palace Beautiful and Other Poems. - Public Domain
Italian government - Public Domain
original uploader - Public Domain
Grendelkhan - CC BY-SA 3.0
thecreativegrid -
unknown - CC BY-SA 4.0
unknown - Public Domain
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Gage Skidmore - CC BY-SA 3.0
Anderson, Paul, 1965-....
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Saturnino Herrán - Public Domain
Herrán, Saturnino, 1887-1918
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Dyson, Frank Watson, 1868-1939
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Will H. Lowe - Public Domain
St. Castin, Jean Vincent d'Abbadie, baron de, 1652-1707
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Wills, Michael, 1952-
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Varela, Florencio, 1807-1848
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Benzer, Seymour
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U.S. Congress - Public Domain
Mason, Stevens Thomson, 1760-1803
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Smollett, T. (Tobias), 1721-1771
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Cajöri, Florian 1859-1930
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James Rementer - CC BY 3.0
Dean, Nora Thompson, 1907-1984
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Hans Pinn - Public Domain
Dz'igan, Shimʻon, 1905-1980
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Vaughan, C. J. (Charles John), 1816-1897
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United States Government - Public Domain
Kessler, Gladys, 1938-
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Brown, Tina
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Deane, Richard, 1610-1653
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Bolm, Adolf, 1884-1951
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Provoost, Samuel, 1742-1815
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Bertha Howell - Public Domain
Jones, Mother, 1837-1930
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The Palace Beautiful and Other Poems. - Public Domain
Newell, R. H. (Robert Henry), 1836-1901
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United States Government - Public Domain
Heizer, Oscar S. (Oscar Stuart), 1868-1956
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Italian government - Public Domain
Roatta, Mario, 1887-
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original uploader - Public Domain
Morgan, Edwin D. (Edwin Denison), 1811-1883
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Grendelkhan - CC BY-SA 3.0
McCloud, Scott, 1960-....
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Elcano, Juan Sebastián de, ca 1476-1526
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thecreativegrid -
Bonington, Chris
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Hauser, John, 1859-1913
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Bushnell, Asa Smith, 1834-1904
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unknown - CC BY-SA 4.0
Hewitt, H. Kent (Henry Kent), 1887-1972
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unknown - Public Domain
Reed, Roland, 1864-1934