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Public Domain
Lorens Pasch the Elder - Public Domain
Ernest Herbert ('E.H.') Mills (1874-1942) - Public Domain
Njkmoore - CC BY-SA 4.0
William Ramsay - Public Domain
ProfReader - CC BY-SA 3.0
Unknown artist; without any doubt dead for more than 70 years - Public Domain
Dan Harasymchuk - CC BY-SA 4.0
unknown (possibly my great uncle, Robert Thompson, 1870-1930) - Public Domain
World Telegram staff photographer - Public Domain
Fortepan/Farkas Jenő adományozó - CC BY-SA 3.0
Juangris - CC BY-SA 4.0
Photographed by PJMweb - CC BY-SA 2.5
SchiDD - CC BY-SA 4.0
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Public Domain
Eckhart, Meister, -1327
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Olle, i Skratthult, 1886-1960
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Public Domain
Dominick, Peter H. (Peter Hoyt), 1915-1981
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Lorens Pasch the Elder - Public Domain
Gyllenborg, Carl, greve, 1679-1746
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Ernest Herbert ('E.H.') Mills (1874-1942) - Public Domain
Williams, Henry Sylvester, 1869-1911
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Njkmoore - CC BY-SA 4.0
Barabashov, N. P. (Nikolaĭ Pavlovich)
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William Ramsay - Public Domain
Hales, Stephen, 1677-1761
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ProfReader - CC BY-SA 3.0
Simmons, Philip, 1912-
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Simonov, Konstantin, 1915-1979
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Mitchell, Grant, 1874-1957
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D'Albertis, Luigi Maria, 1841-1901
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Pearce, James Alfred, 1805-1862
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Unknown artist; without any doubt dead for more than 70 years - Public Domain
Thibaut, Anton Friedrich Justus, 1772-1840
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Dan Harasymchuk - CC BY-SA 4.0
Rooke, Leon
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Louis Ferdinand, Prince of Prussia, 1907-
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Dorgan, Byron L.
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unknown (possibly my great uncle, Robert Thompson, 1870-1930) - Public Domain
Leachman, Gerard, 1880-1920
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World Telegram staff photographer - Public Domain
Mann, Erika, 1905-1969
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Carroll, William, 1788-1844
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Fairchild, Henry Pratt, 1880-1956
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Looy, Jacobus van 1855-1930
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Fortepan/Farkas Jenő adományozó - CC BY-SA 3.0
Bolváry, Géza von 1897-1961
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Sima, Qian, approximately 145 B.C.-approximately 86 B.C.
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Juangris - CC BY-SA 4.0
Isou, Isidore.
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Ennis, Del, 1925-1996
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Photographed by PJMweb - CC BY-SA 2.5
Williams, Dar
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Firsova, Elena, 1950-
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SchiDD - CC BY-SA 4.0
Latry, Olivier, 1962-....
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Hanighen, Bernie, 1908-1976
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Bériot, Charles-Auguste de, 1802-1870