Image from Wikimedia Commons
Harris & Ewing, Washington, D.C. - Public Domain
photographer unknown 1861-65 - Public Domain
Georges Biard - CC BY-SA 3.0
"Plattsburgh Sentinel" newspaper. - Public Domain
Mathew Brady - Public Domain
Public Domain
Harper & Brothers (publisher) - Public Domain
anonymous - Public Domain
U.S. Senate - Public Domain
Unknown -
Eric Koch / Anefo - CC BY-SA 3.0
whittlz - CC BY-SA 3.0
Bain News Service - Public Domain
original uploader - Public Domain
Kevin Dougherty - CC BY-SA 3.0
photographer unknown, retouched by MarmadukePercy - Public Domain
Tom Marcello - CC BY-SA 2.0
Carlo Dolci - Public Domain
unknown - Public Domain
Image from Wikimedia Commons
Harris & Ewing, Washington, D.C. - Public Domain
Mack, Julian W. (Julian William), 1866-1943
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Atterbury, Grosvenor, 1869-1956
Image from Wikimedia Commons
photographer unknown 1861-65 - Public Domain
Caldwell, Henry C. (Henry Clay), 1832-1915
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Meher Baba, 1894-1969
Image from Wikimedia Commons
Georges Biard - CC BY-SA 3.0
Sanderson, Richard, 1953-....
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"Plattsburgh Sentinel" newspaper. - Public Domain
Tredwell, Thomas, 1743-1831
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Mathew Brady - Public Domain
Bowen, Christopher Columbus, 1832-1880
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Public Domain
Reynaud, Charles Emile, 1844-1918
Image from Wikimedia Commons
Harper & Brothers (publisher) - Public Domain
Williams, George Washington, 1849-1891
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anonymous - Public Domain
Maskelyne, Nevil, 1863-1924
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Hoffman, Clare E., 1875-1967
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U.S. Senate - Public Domain
Gronna, Asle J. (Asle Jørgensen), 1858-1922
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Fox, Jay, 1870-1961
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Unknown -
Ribeiro, Aquilino, 1885-1963
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Kemble, E. W. (Edward Windsor), 1861-1933
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Thompson, Maurice, 1844-1901
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Eric Koch / Anefo - CC BY-SA 3.0
Koestler, Arthur, 1905-1983
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whittlz - CC BY-SA 3.0
Haggard, Merle, 1937-2016
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Bain News Service - Public Domain
Marquard, Rube, 1889-1980
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original uploader - Public Domain
Juliana, Countess of Stolberg, 1506-1580
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Duncan-Hughes, J. G
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Peckham, Wheeler H. (Wheeler Hazard), 1833-1905
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Appia, Adolphe, 1862-1928
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Kevin Dougherty - CC BY-SA 3.0
Nankin, Michael
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Nussbaum, J. N. (Johann Nepomuk), Ritter von, 1829-1890
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photographer unknown, retouched by MarmadukePercy - Public Domain
Leavitt, Dudley, 1830-1908
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Tom Marcello - CC BY-SA 2.0
Cranshaw, Bob
Image from Wikimedia Commons
Carlo Dolci - Public Domain
Dolci, Carlo, 1616-1686
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unknown - Public Domain
Zwach, John M. (John Matthew), 1907-1990
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Yangco, Teodoro Rafael, 1861-1939