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German Federal Archives (Bundesarchiv) eusc - CC BY-SA 3.0
Edmunddantes - CC BY-SA 3.0
Judy Malloy - CC0 1.0
FrankieF - CC BY-SA 4.0
August Weger - Public Domain
unknown - Public Domain
Public Domain
crownjulesb - CC BY-SA 2.0
W. Beechey - Public Domain
McClees & Beck, publishers. Julian Vannerson, photographer. - Public Domain
Ori Gershoni - CC BY-SA 3.0
Empire Club of Canada - Public Domain
Bassano - Public Domain
Henry Chase, editor. Lakeside Press (Portland, ME), publisher. - Public Domain
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German Federal Archives (Bundesarchiv) eusc - CC BY-SA 3.0
Burckhardt, Jacob, 1818-1897
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Edmunddantes - CC BY-SA 3.0
Berssenbrugge, Mei-mei, 1947-
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Judy Malloy - CC0 1.0
Malloy, Judy
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FrankieF - CC BY-SA 4.0
Pollak, Kay, 1938-....
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August Weger - Public Domain
Dorn, Heinrich Ludwig Egmont, 1804-1892
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unknown - Public Domain
Ingalls, Sheffield
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Public Domain
Maceo, Antonio, 1845-1896
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Smith, William, 1811-1893
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crownjulesb - CC BY-SA 2.0
Kendrick, Ellie, 1990-....
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Jones, J. Glancy (Jehu Glancy), 1811-1878
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Apollo 8 (Spacecraft)
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Fischer von Waldheim, Gotthelf, 1771-1853
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Haro y Guzmán, Gaspar de, Marqués del Carpio, 1629-1687
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W. Beechey - Public Domain
Meares, John, 1756?-1809
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Jouy, Étienne de, 1764-1846
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McClees & Beck, publishers. Julian Vannerson, photographer. - Public Domain
Thompson, John, 1809-1890
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Ori Gershoni - CC BY-SA 3.0
Gershuni, Moshe
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Empire Club of Canada - Public Domain
Falconer, Robert, Sir, 1867-1943
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Bassano - Public Domain
Grey of Fallodon, Edward Grey, Viscount, 1862-1933
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unknown - Public Domain
Sekles, Bernhard, 1872-1934
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Public Domain
Bruce, George A. (George Anson)
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Lagrange, Joseph, Comte, 1761-1836,
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Dubos, René J. (René Jules), 1901-1982
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Dunn, Nathan, 1782-1844
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Zuckerman, Mortimer
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Henry Chase, editor. Lakeside Press (Portland, ME), publisher. - Public Domain
Kavanagh, Edward, 1795-1844
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Reynolds, Gene, 1925-
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Hearst, George, 1820-1891
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Thompson, Joseph, 1808-1893
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Martineau, Harriet, 1802-1876