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unknown - Public Domain
United States Senate Historical Office - Public Domain
Hpeterswald - CC BY-SA 4.0
Bjarne Thune - CC BY-SA 3.0
not listed - Public Domain
Original uploader was :nl:Toth - Public Domain
Frédéric Boissonnas - Public Domain
Dr. Bernd Gross - CC BY-SA 4.0
Quigley Publishing - Public Domain
Ars Electronica - CC BY-SA 2.0
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Stephenson, Robert, 1803-1859
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unknown - Public Domain
Bates, William Henry, 1917-1969
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United States Senate Historical Office - Public Domain
Stockbridge, Francis Brown, 1826-1894
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McLean, William Pinckney, 1836-1925.
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Verkolje, Johannes 1650-1693
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unknown - Public Domain
Roumain, Jacques, 1907-1944
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Hpeterswald - CC BY-SA 4.0
Chaney, F. M. (Frederick Michael), 1941-
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Bjarne Thune - CC BY-SA 3.0
Solstad, Dag, 1941-....
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not listed - Public Domain
Bigelow, Edward Manning, 1850-1916
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Original uploader was :nl:Toth - Public Domain
Darwin, Francis, Sir, 1848-1925
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Frédéric Boissonnas - Public Domain
Maurras, Charles, 1868-1952
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Dr. Bernd Gross - CC BY-SA 4.0
Ellsberg, Daniel.
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unknown - Public Domain
Ebert, Adolf, 1820-1890
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Ladd, Diane, 1932-....
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Sanborn, David
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Breteuil, Louis-Auguste Le Tonnelier, baron de, 1730-1807
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Webster, Noah, 1758-1843
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Phelan, James, 1821-1873
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Quigley Publishing - Public Domain
Stevens, George, 1904-1975
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Ars Electronica - CC BY-SA 2.0
Sennett, Richard, 1943-....
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Ruzzini, Carlo, 1653-1735
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Sablon, Jean, 1906-1994
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Francœur, L.-B. (Louis-Benjamin), 1773-1849
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Bentham, Jerémy 1748-1832
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Little Walter, 1930-1968
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Kellner, Oscar Johann, 1851-1911
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Rice, Edwin Wilbur, 1862-
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Wibberley, Leonard, 1915-1983
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Phelps, William F. (William Franklin), 1822-1907
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unknown - Public Domain
Hanon, Charles Louis, 1820-1900