Image from Wikimedia Commons
unknown - Public Domain
not stated -
David d'Angers - Public Domain
Teresa Mitchell; levels adjustment by Howcheng - Public Domain
Engraved by S. Freeman from an original in Marischal College, Aberdeen - Public Domain
Émile Cohl - Public Domain
Editor: Leslie Greenhalgh, - Public Domain
Public Domain
Ilya Haykinson - CC BY-SA 3.0
United States Air Force - Public Domain
Waxlion - CC BY-SA 3.0
Svklimkin - CC BY-SA 4.0
Stellar Publishing / unidentified staff artist(s) - Public Domain
The Union Army; A History of Military Affairs in the Loyal States, 1861–65 — Records of the Regiments in the Union Army — Cyclopedia of Battles — Memoirs of Commanders and Soldiers'', Federal Publishing Company (Madison, Wisconsin), 1908. - Public Domain
Image from Wikimedia Commons
unknown - Public Domain
Clark, Aaron, 1783 or 1784-1861
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Adanson, Michel, 1727-1806
Image from Wikimedia Commons
Delane, John Thaddeus, 1817-1879
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Medill, William, 1802-1865
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unknown - Public Domain
Babbage, Benjamin Herschel, 1815-1878.
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Enochs, William Henry, 1842-1893
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Burdick, Usher L. (Usher Lloyd), 1879-1960
Image from Wikimedia Commons
not stated -
Baxter, James K.
Image from Wikimedia Commons
David d'Angers - Public Domain
Dutrochet, Henri, 1776-1847
Image from Wikimedia Commons
Teresa Mitchell; levels adjustment by Howcheng - Public Domain
Boldt Castle (N.Y.)
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Engraved by S. Freeman from an original in Marischal College, Aberdeen - Public Domain
Cant, Andrew, 1590?-1663
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Kolbe, Georg, 1877-1947
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Émile Cohl - Public Domain
Blum, Ernest, 1836-1907
Image from Wikimedia Commons
Editor: Leslie Greenhalgh, - Public Domain
Perry, L. Tom, 1922-
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Public Domain
Grese, Irma, 1923-1945
Image from Wikimedia Commons
Ilya Haykinson - CC BY-SA 3.0
Seymour, Jane, 1951-....
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United States Air Force - Public Domain
Northrop, John Knudsen, 1895-1981
Image from Wikimedia Commons
Waxlion - CC BY-SA 3.0
Wallis, Michael, 1945-....
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Schub, André-Michel
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unknown - Public Domain
Tagore, Rabîndranâth, 1861-1941
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Mond, Robert, 1867-1938
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Arne, Thomas
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Pidgeon, Walter, 1897-1984
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Svklimkin - CC BY-SA 4.0
Korzhakov, Aleksandr
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Staples, Waller R. (Waller Redd), 1826-1897
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Stellar Publishing / unidentified staff artist(s) - Public Domain
Bell, Eric Temple, 1883-1960
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Selleck, Tom, 1945-....
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Oberholtzer, Sara Louisa, 1841-1930
Image from Wikimedia Commons
The Union Army; A History of Military Affairs in the Loyal States, 1861–65 — Records of the Regiments in the Union Army — Cyclopedia of Battles — Memoirs of Commanders and Soldiers'', Federal Publishing Company (Madison, Wisconsin), 1908. - Public Domain
Rhodes, Elisha Hunt, 1842-1917
Image from Wikimedia Commons
Kallaugher, Kevin, 1955-