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US gov - Public Domain
Theron Clark Crawford - Public Domain
Federico Cantú -
... - Public Domain
author - Public Domain
unknown - Public Domain
Public Domain
Lady Ottoline Morrell (died 1938) - Public Domain
NBC Television - Public Domain
John Weever - Public Domain
Thomas Good - CC BY-SA 3.0
Lindy Hopper Phoenix - CC BY 2.0
US Government Printing Office (Washington, DC), publisher. - Public Domain
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US gov - Public Domain
Iglesias Pantín, Santiago, 1872-1939
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Home, Francis, 1719-1813
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Obin, Philomé
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Theron Clark Crawford - Public Domain
Blaine, Walker, -1890
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Stoughton, Edwin H. (Edwin Henry), 1838-1868
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Coan, Titus, 1801-1882
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Jenson, Nicolas, approximately 1420-1480
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Federico Cantú -
Cantú, Federico 1908-1989
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Jollie, Thomas, 1629-1703
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... - Public Domain
Rinaldo d'Este, Duke of Modena and Reggio, 1655-1737
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author - Public Domain
Thomson, Alexander, 1817-1875
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unknown - Public Domain
Devonshire, William Cavendish, Duke of, 1640-1707
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Public Domain
Scheiner, Christoph, 1575-1650
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Robertson, J. Ross (John Ross), 1841-1918
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Sonck, Lars Eliel, 1870-1956
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Lady Ottoline Morrell (died 1938) - Public Domain
Spencer, Gilbert, 1892-
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NBC Television - Public Domain
Adler, Peter Herman, 1899-1990
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Johnston, John, 1775-1861
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Krenz, Egon, 1937-....
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Baldini, Marco
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Kimball, Sumner I. (Sumner Increase), 1834-1923
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John Weever - Public Domain
Weever, John, 1576-1632
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Thomas Good - CC BY-SA 3.0
McReynolds, David, 1929-....
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Lindy Hopper Phoenix - CC BY 2.0
Strobel, Lee, 1952-
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unknown - Public Domain
Van Eps, Fred, 1878-1960
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Petersen, David, 1977-....
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Locock, Charles, Sir, 1799-1875
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Hart, Charles E. (Charles Edward), 1900-1991
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US Government Printing Office (Washington, DC), publisher. - Public Domain
Howell, Charles R. (Charles Robert), 1904-1973
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Murray, John, 1778-1843