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Walter G. Kent - Public Domain
Mwadley - CC BY-SA 3.0
Internet Archive Book Images -
unknown - Public Domain
United States Weather Bureau - Public Domain
Public Domain
Slowking4 -
not indicated - Public Domain
original uploader -
Anonymous (photography) - Public Domain
Tirin -
John Sartain - Public Domain
gdcgraphics - CC BY-SA 2.0
Mathew Brady Levin Corot Handy - Public Domain
Alfred Roller - Public Domain
Mathew Brady - Public Domain
Dodd Mead and Co. - Public Domain
original uploader - Public Domain
Joseph Kriehuber - Public Domain
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Walter G. Kent - Public Domain
Herschel, Clemens, 1842-1930
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Mwadley - CC BY-SA 3.0
Rice, Justin
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Hakewill, George, 1578-1649
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Internet Archive Book Images -
Jacopo, della Quercia, approximately 1374-1438
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unknown - Public Domain
Bosio, Angiolina, 1830-1859
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Benedict, Cleve, 1935-
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United States Weather Bureau - Public Domain
Landsberg, Helmut Erich, 1906-1985
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Public Domain
Waterman, Alan Tower, 1892-1967
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Slowking4 -
Schnackenberg, Gjertrud
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not indicated - Public Domain
Bourgelat, Claude, 1712-1779
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unknown - Public Domain
Rockmore, Clara
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Vasquez, Tiburcio, 1835-1875
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original uploader -
Rucker, Rudy v. B. (Rudy von Bitter), 1946-
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Bush, George, 1796-1859
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Anonymous (photography) - Public Domain
Piper, Leonora, 1859-1950
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Tirin -
Sievers, Wolfgang, 1913-
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John Sartain - Public Domain
Sartain, Emily, 1841-1927
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Hull, Henry, 1890-1977
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Atkinson, Miles, 1741-1811
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gdcgraphics - CC BY-SA 2.0
Macy, William H., 1950-....
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Mathew Brady Levin Corot Handy - Public Domain
Valentine, Edward Kimble, 1843-1916
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Botticini, Francesco, 1446-1497
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Gilman, John Taylor, 1753-1828
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Alfred Roller - Public Domain
Roller, Alfred, 1864-1935
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St. John, Robert, 1902-2003
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Feuermann, Emanuel, 1902-1942
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Mathew Brady - Public Domain
Davis, Joseph Jonathan, 1828-1892
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Dodd Mead and Co. - Public Domain
Kester, Paul, 1870-1933
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original uploader - Public Domain
Herriman, George, 1880-1944
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Joseph Kriehuber - Public Domain
Dreyschock, Alexander, 1818-1869