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da - Public Domain
Gage Skidmore - CC BY-SA 3.0
Anonymous -
unknown - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
Photographer not credited - Public Domain
Tvhistoryfan - CC BY-SA 4.0
Public Domain
Repdan - CC BY-SA 3.0
Andrewrabbott - CC BY-SA 3.0
Sally Larsen - CC BY-SA 3.0
Government Printing Office - Public Domain
unknown - CC0 1.0
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da - Public Domain
Bangert, Emilius, 1883-1962
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Gage Skidmore - CC BY-SA 3.0
Corbett, John, 1961-
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Anonymous -
Simeoni, Giovanni, 1819-1892
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unknown - Public Domain
Moses, Franklin Israel, 1838-1906
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Mathew Brady Levin Corot Handy - Public Domain
Thurman, Allen Granbery, 1813-1895
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Bouchard, Hipólito
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Worthington, Thomas, 1773-1827
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Photographer not credited - Public Domain
Foster, Murphy J. (Murphy James), 1849-1921
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Tvhistoryfan - CC BY-SA 4.0
Aylesworth, John
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Public Domain
Krushelʹnyt︠s︡ʹka, Solomii︠a︡ Amvrosiïvna 1872-1952
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Repdan - CC BY-SA 3.0
Gelernter, David Hillel.
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Mathew Brady Levin Corot Handy - Public Domain
Kelley, William D. (William Darrah), 1814-1890
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United States. War Production Board
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Haenisch, Konrad, 1876-1925
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Yukawa, Hideki, 1907-1981
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Pascoli, Giovanni, 1855-1912
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Andrewrabbott - CC BY-SA 3.0
Chase, F. H. (Frederic Henry), 1853-1925
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Spedalieri, Nicola, 1740-1795
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Sally Larsen - CC BY-SA 3.0
Hosoe, Eikō, 1933-
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Government Printing Office - Public Domain
Prouty, Winston L. (Winston Lewis), 1906-1971
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Kramers, Hendrik Anthony, 1894-1952
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Ḥaydar Mīrzā, 1499 or 1500-1551
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Palmer, William Jackson, 1836-1909
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Dutronc, Jacques
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unknown - CC0 1.0
Enderlein, Günther (1872-1968).
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Te Waharoa, Wiremu Tamihana Tarapipipi, -1866
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unknown - Public Domain
Carpenter, Cyrus Clay, 1829-1898
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Mandelʹshtam, Osip, 1891-1938
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unknown - Public Domain
Woodbury, Urban A. (Urban Andrain), 1838-1915.
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Flynn, Elizabeth Gurley, 1890-1964