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jp:朝日新聞社 - Public Domain
US Government Printing Office (Washington, DC). - Public Domain
Walter Gresham - CC BY-SA 3.0
Victuallers - CC BY-SA 3.0
unknown - Public Domain
L. T. Meade - no photo credit. Hurst & Company Publishers - Public Domain
Carolynbiggio - CC BY-SA 4.0
J.P. Ziolo - Public Domain
ATD QUART MONDE - CC BY 3.0
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Interaction-Design.org - CC BY-SA 2.0
Willy Pogany - Public Domain
Luca Giarelli - CC BY-SA 3.0
Gabrielle D. Clements (1858-1948) - Public Domain
Thomas Nelson Downs - Public Domain
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jp:朝日新聞社 - Public Domain
Kyō, Machiko (1924- ).
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Martin, Edwin W.
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US Government Printing Office (Washington, DC). - Public Domain
Beamer, John V. (John Valentine), 1896-1964
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Fenwick, Edward D. (Edward Dominic), 1768-1832
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Walter Gresham - CC BY-SA 3.0
Long, William Ivey
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Victuallers - CC BY-SA 3.0
Wrangham, Richard W., 1948-....
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Nicollet, J. N. (Joseph Nicolas), 1786-1843
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Foraker, Joseph Benson, 1846-1917
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Ryan, John D. (John Dale), 1915-1983
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Grimmelshausen, Hans Jakob Christoph von, 1625-1676
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unknown - Public Domain
Hergesell, H. (Hugo), 1859-
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unknown - Public Domain
Bukharin, Nikolaĭ Ivanovich, 1888-1938
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Green, Robert S. (Robert Stockton), 1831-1895
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Mâle, Émile, 1862-1954
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L. T. Meade - no photo credit. Hurst & Company Publishers - Public Domain
Meade, L. T., 1854-1914
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Carolynbiggio - CC BY-SA 4.0
Hensche, Henry, 1901-
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J.P. Ziolo - Public Domain
Gautier, Léon, 1832-1897
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Lehmann, Frederick W. (Frederick William), 1853-1931
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Du Moulin, Charles, 1500-1566
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unknown - Public Domain
Baer, George F. (George Frederick), 1842-1914
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ATD QUART MONDE - CC BY 3.0
Wresinski, Joseph
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Friedrich, Caspar David, 1774-1840
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Knight, Gladys, 1944-
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Interaction-Design.org - CC BY-SA 2.0
Gardner, Howard, 1943-....
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Inoue, Kaoru, 1836-1915
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Willy Pogany - Public Domain
Pogány, Willy, 1882-1955
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Luca Giarelli - CC BY-SA 3.0
Cavalli-Sforza, L.L. (Luigi Luca), 1922-
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Gabrielle D. Clements (1858-1948) - Public Domain
Hill, Samuel, 1857-1931
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Guise, François de Lorraine, duc de, 1519-1563
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Thomas Nelson Downs - Public Domain
Downs, T. Nelson (Thomas Nelson), 1868-1938