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unknown - Public Domain
United States Senate - Public Domain
Georges Biard - CC BY-SA 3.0
anonymous - Public Domain
user at project - Public Domain
Erik Ose - Public Domain
USNHC - Public Domain
Unsigned - Public Domain
Bain - Public Domain
Tzolag Hovsepian - CC BY-SA 4.0
Gabriela Kotik - CC BY-SA 3.0
Mathew Brady Levin Corot Handy - Public Domain
Maull & Polyblank - Public Domain
Original uploader was :it:Margherita - Public Domain
jp:朝日新聞社 - Public Domain
Kristin Dos Santos - CC BY-SA 2.0
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unknown - Public Domain
Klumpke, Anna, 1856-1942
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United States Senate - Public Domain
Welch, Joseph N., 1890-1960
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Georges Biard - CC BY-SA 3.0
Harel, Philippe, 1956-
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anonymous - Public Domain
Robinson, Robert, 1735-1790
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Brummer, Joseph
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user at project - Public Domain
Korteweg, D. J. (Diederik Johannes), 1848-1941
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Erik Ose - Public Domain
Herzenberg, Joseph A., 1941-
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USNHC - Public Domain
Jeffers, William N. (William Nicholson), 1824-1883
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Unsigned - Public Domain
Tedeschini, Federico, b. 1873
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Davies, Thomas, 1713-1785
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Edgeworth, Michael Pakenham 1812-1881
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Guyer, Tennyson, 1913-1981
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Bain - Public Domain
Harrison, Charles (Tenor)
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unknown - Public Domain
Sidis, William James, 1898-1944
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Kuskova, Ekaterina Dmitrievna, 1869-1958
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Shepard, Edward Morse, 1850-1911
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unknown - Public Domain
Guggenheim, Siegfried
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Tzolag Hovsepian - CC BY-SA 4.0
Mirzoi︠a︡n, Ė. (Ėduard), 1921-2012
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unknown - Public Domain
Adams, Henry C. (Henry Carter), 1851-1921
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Gabriela Kotik - CC BY-SA 3.0
Kotík, Jan Jakub, 1972-2007
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Bullrich, Silvina, 1915-
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Dimsdale, Thomas, 1712-1800
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Mathew Brady Levin Corot Handy - Public Domain
Story, William Wetmore, 1819-1895
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Janet, Paul, 1823-1899
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unknown - Public Domain
Gunzburg, Nico
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Maull & Polyblank - Public Domain
Smith, Archibald, 1813-1872
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unknown - Public Domain
Washburn, Cephas, 1793-1860
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Original uploader was :it:Margherita - Public Domain
De Sanctis, Francesco, 1817-1883
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jp:朝日新聞社 - Public Domain
Takami, Jun, 1907-1965
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Kristin Dos Santos - CC BY-SA 2.0
Laurie, Hugh, 1959-....