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Abbie Rowe - Public Domain
Quigley Publishing - Public Domain
unknown - Public Domain
*:File:Asad Ali Khan 2009.jpg - CC BY-SA 4.0
Library of the London School of Economics and Political Science -
Mahout34 - Public Domain
Léon Spilliaert - Public Domain
Public Domain
R. Wernicke - Public Domain
The Rudolph Wurlitzer Co. - Public Domain
Photograph - Public Domain
Kristinaeking - CC BY-SA 3.0
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Secchi, Angelo, 1818-1878
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Abbie Rowe - Public Domain
Conant, James Bryant, 1893-1978
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Ross, James Clark, Sir, 1800-1862
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Francatelli, Charles Elmé, 1805-1876
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Boscawen, Edward, 1711-1761
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O'Connell, James D., 1899-1984
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Quigley Publishing - Public Domain
Stevens, George, 1904-1975
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Barrett, James W. (James William), Sir, 1862-1945
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unknown - Public Domain
Mivart, St. George Jackson, 1827-1900
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*:File:Asad Ali Khan 2009.jpg - CC BY-SA 4.0
Khan, Asad Ali, 1937-2011
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Library of the London School of Economics and Political Science -
Self, Peter.
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Dent, Frederick B. (Frederick Baily), 1922-
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Dundonald, Archibald Cochrane, Earl of, 1749?-1831
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Ciamician, Giacomo, 1857-1922
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Pistorius, Johann, 1546-1608
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Mahout34 - Public Domain
Mandl, Herbert Tomas
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Léon Spilliaert - Public Domain
Spilliaert, Léon, 1881-1946
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unknown - Public Domain
Olmsted, John Charles, 1852-1920
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Bradshaw, Dove
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Lovering, Joseph, 1813-1892
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Bazaine, François-Achille, 1811-1888
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Leitner, G.W. (Gottlieb William), 1840-1899
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Carpenter, P. Herbert (Philip Herbert), 1852-1891
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Public Domain
Bartlett, Willard
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Gillette, William, 1853-1937
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R. Wernicke - Public Domain
Berger, Wilhelm, 1861-1911
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The Rudolph Wurlitzer Co. - Public Domain
Zimmermann, Chas. A. (Charles A.), 1862-1916
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Scott, Campbell
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Photograph - Public Domain
Scott, George Gilbert, Sir, 1811-1878
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Kristinaeking - CC BY-SA 3.0
Schafer, David, 1955-