Image from Wikimedia Commons
Félix Nadar - Public Domain
user at project - CC BY 2.5
Smithsonian Institution -
Machahn - Public Domain
Georges Biard - CC BY-SA 3.0
Rob Bogaerts / Anefo -
KellyChlew - CC BY 2.0
Acc. 90-105 - Science Service, Records, 1920s-1970s, Smithsonian Institution Archives - CC BY 2.0
Henry Hoppner Meyer (?1782-1847), after Sir William Beechey (1753-1839) - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
unknown - Public Domain
Public Domain
State Library of Victoria, Accession No H2002.87 - Public Domain
Sigma Chi Fraternity - Public Domain
unknown -
Robert S. Lanier, Ed. - Public Domain
Faerichiee - Public Domain
Theodore C. Marceau - Public Domain
Image from Wikimedia Commons
Novak, John, 1955-
Image from Wikimedia Commons
Félix Nadar - Public Domain
Gramont, Élisabeth de, 1875-1954
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user at project - CC BY 2.5
McDowell, Michael, 1951-
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Smithsonian Institution -
Scaravaglione, Concetta, 1900-1975
Image from Wikimedia Commons
Machahn - Public Domain
Becker, Johann Philipp, 1809-1886
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Georges Biard - CC BY-SA 3.0
Thompson, Emma
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Rust, Wilhelm, 1822-1892
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Rob Bogaerts / Anefo -
McVicar, John, 1940-
Image from Wikimedia Commons
KellyChlew - CC BY 2.0
Blondy, Alpha, 1953-....
Image from Wikimedia Commons
Acc. 90-105 - Science Service, Records, 1920s-1970s, Smithsonian Institution Archives - CC BY 2.0
Day, Edmund Ezra, 1883-1951
Image from Wikimedia Commons
Henry Hoppner Meyer (?1782-1847), after Sir William Beechey (1753-1839) - Public Domain
Cadell, T. (Thomas), 1742-1802
Image from Wikimedia Commons
Mathew Brady Levin Corot Handy - Public Domain
Alcorn, J. L. (James Lusk), 1816-1894
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unknown - Public Domain
Kayserling, Meyer, 1829-1905
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Public Domain
Hamburg, Dan, 1948-
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Weiss, Louise, 1893-1983
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State Library of Victoria, Accession No H2002.87 - Public Domain
Thomas, William, 1791-1867
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unknown - Public Domain
Charles, Rajah of Sarawak, 1829-1917
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Skarga, Piotr, 1536-1612
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Sigma Chi Fraternity - Public Domain
Meiklejohn, George D. (George de Rue), 1857-1929
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unknown - Public Domain
Scott, Martha, 1914-2003
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unknown -
Jordan, Dorothy, 1906-1988
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Brown, Clarence, 1890-1987
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Robert S. Lanier, Ed. - Public Domain
Hartsuff, George Lucas, 1830-1874
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Faerichiee - Public Domain
Hay, Harry
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Theodore C. Marceau - Public Domain
Otis, Harrison Gray, 1837-1917
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unknown -
Mayer, Rupert, 1876-1945
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Georges Biard - CC BY-SA 3.0
Herzi, Hafsia
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Rops, Félicien, 1833-1898
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Duchesne, Antoine-Nicolas, 1747-1827
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Warren, Robert Penn, 1905-1989