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unknown - Public Domain
Edward Waterhouse - Public Domain
Public Domain
Civil War glass negative collection (Library of Congress) - Public Domain
Sam Beebe (https://www.flickr.com/photos/sbeebe/) - CC BY 2.0
Angela George - CC BY-SA 3.0
Carol Bird - Public Domain
nieznany/unknown - Public Domain
Contemporary photograph -
unknown autor - Public Domain
Shaun Gladwell - CC BY-SA 4.0
Martin Luther King, Jr., Memorial Library, Washington, D.C. - Public Domain
John James Ingalls, author. Harper & Brothers (New York, NY), publisher. - Public Domain
William Fothergill Cooke - Public Domain
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Russell of Killowen, Charles Russell, baron, 1832-1900
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Lübke, Heinrich, 1894-1972
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unknown - Public Domain
Agardh, Jacob Georg, 1813-1901
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Edward Waterhouse - Public Domain
Fortescue, John, Sir, 1394?-1476?
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Olson, Floyd Björnstjerne, 1891-1936
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Home, Francis, 1719-1813
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Cruikshank, E. A. (Ernest Alexander), 1853-1939
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Kanno, Yoko
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Greenleaf, Simon, 1783-1853
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Public Domain
Gibson, W. Hamilton (William Hamilton), 1850-1896
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Civil War glass negative collection (Library of Congress) - Public Domain
Williamson, R. S. (Robert Stockton), 1824-1882
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Bascom, Florence, 1862-1945
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Sam Beebe (https://www.flickr.com/photos/sbeebe/) - CC BY 2.0
Dodson, P. L. (Patrick L.)
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Angela George - CC BY-SA 3.0
White, Betty, 1922-2021
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Carol Bird - Public Domain
Lamont, Corliss, 1902-1995
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nieznany/unknown - Public Domain
Szyfman, Arnold, 1882-1967
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Contemporary photograph -
Bradley, F. H. (Francis Herbert), 1846-1924
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unknown autor - Public Domain
Brossard, Sébastien de, 1655-1730
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Shaun Gladwell - CC BY-SA 4.0
Gladwell, Shaun
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Martin Luther King, Jr., Memorial Library, Washington, D.C. - Public Domain
King, Isabella Greenway, 1886-1953
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Welch, Raquel
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John James Ingalls, author. Harper & Brothers (New York, NY), publisher. - Public Domain
Parrott, Marcus J. (Marcus Junius), 1828-1879
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Rostovtzeff, Michael Ivanovitch, 1870-1952
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Marty, Martin E., 1928-....
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William Fothergill Cooke - Public Domain
Cooke, William Fothergill, 1806-1879
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Willis, Edwin E., 1904-1972
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Spencer, George John Spencer, Earl, 1758-1834
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Wordsworth, Christopher, 1774-1846
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Izard, Ralph, 1785-1824
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Knaus, Ludwig, 1829-1910