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unknown - Public Domain
Eva Rinaldi - CC BY-SA 2.0
US gov - Public Domain
Guillermo Ramos Flamerich - CC BY-SA 3.0
Georges Biard - CC BY-SA 3.0
anonymous - Public Domain
Erling Mandelmann - CC BY-SA 3.0
Dese'Rae L. Stage - CC BY 3.0
Harris & Ewing - Public Domain
Shadowgate - CC BY 2.0
w:Mydogsarelazy -
William P. Gottlieb (1917-2006), photographer - Restored by Adam Cuerden - Public Domain
Joi - CC BY 2.0
David Shankbone - CC BY 3.0
US Government Printing Office - Public Domain
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unknown - Public Domain
Leo, Pope XIII, 1810-1903
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Eva Rinaldi - CC BY-SA 2.0
Polson, John, 1965-....
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Derzhavin, Gavriil Romanovich, 1743-1816
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Clarke, Thomas Shields
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US gov - Public Domain
Phillips, Samuel C. (Samuel Cochran), 1921-1990
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Guillermo Ramos Flamerich - CC BY-SA 3.0
Barrera, Alberto
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Georges Biard - CC BY-SA 3.0
Pinoteau, Claude, 1925-2012
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Spadolini, Giovanni
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Youmans, Edward Livingston, 1821-1887
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Lait, Jack
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anonymous - Public Domain
Prado, Pedro, 1886-1952
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Schroeder, Seaton, 1849-1922
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unknown - Public Domain
O'Connor, J. F. T., 1884-1949
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Erling Mandelmann - CC BY-SA 3.0
Pratt, Hugo
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Dantan, Jean-Pierre, 1800-1869
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Trimmer, Sarah, 1741-1810
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Sexton, Mike (Michael Richard)
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Dese'Rae L. Stage - CC BY 3.0
Ferrick, Melissa
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Harris & Ewing - Public Domain
Blashfield, Edwin Howland, 1848-1936
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Smith, Julian Constable, 1885-1975.
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Shadowgate - CC BY 2.0
Allen, Russell
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w:Mydogsarelazy -
Oliveira, Nathan, 1928-2010
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William P. Gottlieb (1917-2006), photographer - Restored by Adam Cuerden - Public Domain
Williams, Mary Lou, 1910-1981
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Stables, Gordon, 1840-1910
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Joi - CC BY 2.0
Morrisett, Lloyd, 1929-
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Loudenslager, Henry C. (Henry Clay), 1852-1911
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David Shankbone - CC BY 3.0
Evans, Harold, 1928-....
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US Government Printing Office - Public Domain
Robison, Howard W. (Howard Winfield), 1915-1987
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Garman, Samuel, 1843-1927
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Bandyopādhyāẏa, Bibhūtibhūshaṇa, 1896?-1950