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Not stated - Public Domain
Alexandra Studio - Public Domain
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Mathew Brady - Public Domain
Parliament of New Zealand - Public Domain
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Astrochemist - Public Domain
Columbia Records - Public Domain
Smokeonthewater - CC BY-SA 4.0
Gage Skidmore - CC BY-SA 3.0
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Georges Biard - CC BY-SA 3.0
unknown - Public Domain
J.E. Purdy - Public Domain
user at project - Public Domain
Unattributed engraving - Public Domain
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Kamagurka
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Berkeley, George, 1685-1753
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Rung, Frederik, 1854-1914
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Fitton, William Henry, 1780-1861
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Stephen, James, Sir, 1789-1859
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Alexandra Studio - Public Domain
Cooke, Jack Kent, 1912-
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Photos by flipchip / LasVegasVegas.com - CC BY-SA 3.0
Swift, Stephanie 1972-....
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Mathew Brady - Public Domain
Geary, John White, 1819-1873
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Parliament of New Zealand - Public Domain
Thorn, James, 1882-1956
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Bohm, David, 1917-1992
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Converse, George Leroy, 1827-1897
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Howe, Joseph, 1804-1873
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Astrochemist - Public Domain
Coblentz, Catherine Cate, 1897-1951
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Wachstein, Bernhard, 1868-1935
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Columbia Records - Public Domain
Smith, Carl, 1927-2010
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Smokeonthewater - CC BY-SA 4.0
Hunt, Helen, 1963-...
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Gage Skidmore - CC BY-SA 3.0
Toro, Guillermo del 1964-
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McKellar, Kenneth Douglas, 1869-1957
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Lang, John Dunmore, 1799-1878
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Eliade, Mircea, 1907-1986
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Yukawa, Hideki, 1907-1981
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Photo scanned by South Carolina Political Collections at the University of South Carolina - CC BY-SA 4.0
Hemphill, Robert W. (Robert Witherspoon), 1915-1985
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Georges Biard - CC BY-SA 3.0
Béart, Emmanuelle
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unknown - Public Domain
Pottier, Eugéne, 1816-1887
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Luther, Martin, 1483-1546
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J.E. Purdy - Public Domain
La Farge, John, 1835-1910
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user at project - Public Domain
Carpenter, Don
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unknown - Public Domain
Early, Mr. (Peter), 1773-1817
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García Calderón, Francisco, 1834-1905
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Unattributed engraving - Public Domain
Edwards, William H. (William Henry), 1822-1909