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w:Muriel Rukeyser - Public Domain
Thomas Gibson - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
International News Service/St Louis Post-Dispatch. - Public Domain
Carlo Riccardi -
unknown (original image); Centpacrr - Public Domain
Eva Zippel -
McDonald, James Ingram, 1865-1935. Rua Kenana. Ref: 1/2-019618-F. Alexander Turnbull Library, Wellington, New Zealand. http://natlib.govt.nz/records/23147416. - Public Domain
*:File:Warren_Hearnes_with_Champion_Mules.jpg - Public Domain
unknown - Public Domain
George Grantham Bain Collection (Library of Congress) - Public Domain
Peperudi - CC BY-SA 4.0
unknown -
Archive.org - Public Domain
User ACT1 -
Image from Wikimedia Commons
Williams, George, 1821-1905
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Craig, Edward Arthur, 1896-1994
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w:Muriel Rukeyser - Public Domain
Harriot, Thomas, 1560-1621
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Thomas Gibson - Public Domain
Tailer, William, -1732
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Mathew Brady Levin Corot Handy - Public Domain
Hoyt, Henry M. (Henry Martyn), 1830-1892
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International News Service/St Louis Post-Dispatch. - Public Domain
Farrow, John, 1904-1963
Image from Wikimedia Commons
Carlo Riccardi -
Moro, Aldo, 1916-1978
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McKee, William F. (William Fulton), 1906-1987
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Semmes, Raphael, 1809-1877
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unknown (original image); Centpacrr - Public Domain
Hershey, Milton Snavely, 1857-1945
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Negron, Taylor, 1958-
Image from Wikimedia Commons
Eva Zippel -
Cranko, John
Image from Wikimedia Commons
McDonald, James Ingram, 1865-1935. Rua Kenana. Ref: 1/2-019618-F. Alexander Turnbull Library, Wellington, New Zealand. http://natlib.govt.nz/records/23147416. - Public Domain
Kenana, Rua, 1869-1937
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*:File:Warren_Hearnes_with_Champion_Mules.jpg - Public Domain
Hearnes, Warren E. (Warren Eastman), 1923-
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Mannock, Edward, 1887-1918
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Crawford, Bruce
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unknown - Public Domain
Blacher, Boris, 1903-1975
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Stephens, James, 1825-1901
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Kudlich, Hans, 1823-1917
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Rogers, Roy, 1911-1998
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George Grantham Bain Collection (Library of Congress) - Public Domain
Kurt, Melanie, 1880-1941
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Peperudi - CC BY-SA 4.0
Palmer, Tony, 1941-....
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unknown -
Deterding, Henri, 1866-1939
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Archive.org - Public Domain
Matthews, Jessie
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User ACT1 -
Rydell, Bobby
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Robards, Jason, 1892-1963
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Wood, S. C. (Samuel Casey), 1830-1913
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Mason, David, 1954-....
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Bonnefoy, Yves
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Zhu, Xi, 1130-1200