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US Air Force - Public Domain
Public Domain
William Edward Blythe / Stellar Publishing - Public Domain
unknown -
Rohitsuratekar - CC BY-SA 4.0
Chuck369 - CC BY-SA 3.0
Lock the Gate Alliance - CC BY 2.0
unknown - Public Domain
John Hall - Public Domain
George Dawe - Public Domain
George Grantham Bain Collection (Library of Congress) - Public Domain
Giacomo Brogi (1822-1881) - Public Domain
Seattle Municipal Archives - CC BY 2.0
LoisPettini - CC BY-SA 4.0
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Wright, Carroll Davidson, 1840-1909
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Condé, Louis, prince de, 1621-1686
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Brühl, Karl Friedrich Moritz Paul, Graf von, 1772-1837
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US Air Force - Public Domain
Jackson, James F.
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Public Domain
Prince, Morton, 1854-1929
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William Edward Blythe / Stellar Publishing - Public Domain
England, George Allan, 1877-1936
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Louis III, Prince of Condé, 1668-1710
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unknown -
Gabrielli, Giuseppe, 1903-1987
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Rohitsuratekar - CC BY-SA 4.0
Tata Institute of Fundamental Research. National Centre for Biological Sciences
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Chuck369 - CC BY-SA 3.0
O'Neill, Dick, 1928-1998
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Lock the Gate Alliance - CC BY 2.0
Henderson, Sarah, 1971-
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unknown - Public Domain
Stock, Frederick, 1872-1942
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John Hall - Public Domain
Scott, John, 1731-1783
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Pincemin, Jean-Pierre, 1944-2005
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unknown - Public Domain
Ulʹi︠a︡nov, Aleksandr, 1866-1887
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Auer, Leopold, 1845-1930
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Lucas, George A., 1824-1909
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Public Domain
Thévenot, Jean de, 1633-1667
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George Dawe - Public Domain
Alexandra, Empress, consort of Nicholas I, Emperor of Russia, 1798-1860
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Glover, Townend, 1813-1883
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Argelander, Fr. (Friedrich), 1799-1875
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George Grantham Bain Collection (Library of Congress) - Public Domain
Templewood, Samuel John Gurney Hoare, Viscount, 1880-1959
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Ward, John, approximately 1679-1758
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Harrison, John, 1693-1776
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Giacomo Brogi (1822-1881) - Public Domain
Bellincioni, Gemma
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unknown - Public Domain
Chamfort, Sébastien-Roch-Nicolas, 1740?-1794
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St. Martin, Alexis, 1797?-1880
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Geyer, Florian, approximately 1490-1525
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Seattle Municipal Archives - CC BY 2.0
Coolidge, Rita
Image from Wikimedia Commons
LoisPettini - CC BY-SA 4.0
Court, Joseph Désiré, 1797-1865