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Alexei Kouprianov - CC BY-SA 3.0
Abremmer - CC BY-SA 3.0
Etienne Jules Marey - CC0 1.0
Sarony - Public Domain
Shoobhgroup - CC BY-SA 4.0
Air Force Photo by Lou Hernandez - Public Domain
"The Evening Star" (Washington, DC). - Public Domain
Tino Picos - CC BY-SA 3.0
Praveenthumma -
unknown - Public Domain
Tucker Collection - Public Domain
Philips Records - Public Domain
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Alexei Kouprianov - CC BY-SA 3.0
Wallerstein, Immanuel Maurice, 1930-....
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Apollo 8 (Spacecraft)
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Abremmer - CC BY-SA 3.0
Rankine, Claudia, 1963-....
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De Garmo, Charles, 1849-1934
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MacMahon, Aline, 1899-1991
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Zimmerman, J. (Joseph), 1785-1853
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Etienne Jules Marey - CC0 1.0
Marey, Étienne-Jules 1830-1904
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Sarony - Public Domain
Spofford, Harriet Elizabeth Prescott, 1835-1921
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Ball, Robert S. (Robert Stawell), 1840-1913
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Shoobhgroup - CC BY-SA 4.0
Menon, Anjolie Ela, 1940-
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Ferrer, José, 1912-1992
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Air Force Photo by Lou Hernandez - Public Domain
Grant, Johnny
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Eigenmann, Carl H., 1863-1927
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"The Evening Star" (Washington, DC). - Public Domain
Cutts, James Madison, 1837-1903
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Roth, Lillian, 1910-1980
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Boileau-Despréaux, Nicolas, 1636-1711
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Tino Picos - CC BY-SA 3.0
Malaquais, Jean, 1908-1998
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Bateman, John Frederic (John Frederic La Trobe), 1810-1889
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Praveenthumma -
Karve, Dhondo Keshav, 1858-1962
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unknown - Public Domain
Dyal, Kenneth W. (Kenneth Warren), 1910-1978
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Cooper, Mercator, 1803-1872
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Walbran, John Richard, 1817-1869
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unknown - Public Domain
Jennings, William Sherman, 1863-1920
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Tucker Collection - Public Domain
Mistral, Frédéric, 1830-1914
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Reyburn, John Edgar, 1845-1914
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Shou, Robin
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Gren, Friedrich Albrecht Carl, 1760-1798
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unknown - Public Domain
McFarland, J. Horace (John Horace), 1859-1948
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Whitney, Daniel, 1795-1862
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Philips Records - Public Domain
Gall, France