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Ragesoss - CC BY-SA 3.0
Public Domain
unknown author - Public Domain
NOAA People Collection - Public Domain
U.S. Air Force - Public Domain
Gage Skidmore - CC BY-SA 3.0
Nv8200p - CC BY-SA 4.0
Paolo Caronni - Public Domain
Sharon Niscak - CC BY-SA 4.0
James Burney - Public Domain
Natalia Dobryszycka - CC BY 2.0
Leire Grijalvo - CC BY-SA 4.0
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Hope, Laurence, 1865-1904
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Trübner, Nicolas, 1817-1884
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Ragesoss - CC BY-SA 3.0
Galison, Peter, 1955-
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Public Domain
Rigdon, William McKinley, 1904-
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Kendall, Edward C. (Edward Calvin), 1886-1972
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unknown author - Public Domain
Stalin, Joseph, 1879-1953
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Public Domain
Hall, John Lesslie, 1891-1978
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NOAA People Collection - Public Domain
Hassler, F. R. (Ferdinand Rudolph), 1770-1843
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Pirckheimer, Willibald, 1470-1530
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Jonke, Gert, 1946-2009
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Public Domain
Brown, James, 1766-1835
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Van Vechten, Carl, 1880-1964
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U.S. Air Force - Public Domain
Westover, Oscar, 1883-1938
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Franco, John, 1960-
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McNairy, John, 1762-1837
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Gage Skidmore - CC BY-SA 3.0
Raimi, Sam
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Fish, Preserved, 1766-1846
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Duffy, Hugh, 1866-1954
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Moore, Decima, 1871-1964
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Nv8200p - CC BY-SA 4.0
Wittliff, William D.
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Paolo Caronni - Public Domain
Davila, Arrigo Caterino, 1576-1631
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Marischka, Hubert
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Sharon Niscak - CC BY-SA 4.0
Pielou, E. C., 1924-
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Tronchin, Théodore, 1709-1781
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James Burney - Public Domain
Burney, James, 1750-1821
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Natalia Dobryszycka - CC BY 2.0
Swallow, Steve
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Bremer, Fredrika, 1801-1865
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Grayson, Cary T. (Cary Travers), 1878-1938
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Wills, Chill, 1902-1978
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Leire Grijalvo - CC BY-SA 4.0
Ricci, Nina, 1883-1970