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unknown - Public Domain
Cristofano dell'Altissimo - Public Domain
J. Schloss, New York - Public Domain
Moustaky - CC BY-SA 3.0
Henry Joseph Whitlock - Public Domain
Alrie L. Sego Jr. - Public Domain
Scherer - Public Domain
:w:en:Herbert Lambert - Public Domain
US gov - Public Domain
Original :NL:PieterjanDC - Public Domain
Smithsonian Institution -
Public Domain
Giancarlo Botti (1931-2009), italian photographer -
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Dale, Sam, 1772-1841
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unknown - Public Domain
Bromwell, Henry Pelham Holmes, 1823-1903
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Cristofano dell'Altissimo - Public Domain
Pico della Mirandola, Giovanni, 1463-1494
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unknown - Public Domain
Denevi, Marco, 1922-1998
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Hamilton, George, Earl of Orkney, 1666-1737
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J. Schloss, New York - Public Domain
Miller, Warner, 1838-1918
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Ohman, Phil, 1896-1954
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Houk, L. C. (Leonidas Campbell), 1836-1891
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Moustaky - CC BY-SA 3.0
Harrison, Thomas, 1606-1660
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Connery, William Patrick, 1888-1937
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Henry Joseph Whitlock - Public Domain
Beazley, C. Raymond (Charles Raymond), 1868-1955
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Alrie L. Sego Jr. - Public Domain
Martin, Dewey, 1940-2009
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Scherer - Public Domain
Amador Guerrero, Manuel, 1833-1909
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Bridges, William B., 1934-
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:w:en:Herbert Lambert - Public Domain
Holst, Gustav
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US gov - Public Domain
Anderson, Robert B. (Robert Bernerd), 1910-1989
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unknown - Public Domain
Rebouças, André Pinto, 1838-1898
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Beckley, Alfred, 1802-1888
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Freshfield, Douglas William, 1845-1934
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Original :NL:PieterjanDC - Public Domain
Chausson, Ernest
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Orko, Risto, 1899-2001
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Smithsonian Institution -
Gaposchkin, Cecilia Helena Payne, 1900-1979
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Kernan, Joseph E.
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Public Domain
Clarke, Alexander Ross, 1828-1914
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Ritchie, Albert C. (Albert Cabell), 1876-1936
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Giancarlo Botti (1931-2009), italian photographer -
Maccione, Aldo, 1935-...
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Howe, Elias, 1819-1867
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Putnam, Israel, 1718-1790
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Menger, Karl, 1902-1985
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Alencar, José Martiniano de, 1829-1877