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Chemical Institute of America - Public Domain
Amos Hadley - Public Domain
Dundak - CC BY-SA 3.0
work-for-hire by Chad Parish - CC BY 3.0
unknown - Public Domain
Rodin777 - CC BY-SA 3.0
Governo De Sergipe - CC BY-SA 2.0
original uploader -
Reginald Haines (1872-1941) - Public Domain
Caulfieldh - CC BY-SA 3.0
Public Domain
Robert. L. - Public Domain
Teddyyy - CC BY 3.0
unknown photographer - Public Domain
William Morris Agency (management). - Public Domain
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Bergius, Friedrich, 1884-
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Chemical Institute of America - Public Domain
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940
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Barker, Thomas, 1722-1809
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Amos Hadley - Public Domain
Harriman, Walter, 1817-1884
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Dundak - CC BY-SA 3.0
Pollini, Maurizio
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Morris, Errol
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work-for-hire by Chad Parish - CC BY 3.0
Klein, Peter G.
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Jacobus Philippus, Bergomensis, 1434-1520
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unknown - Public Domain
Salarrué (1899-1975).
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Rodin777 - CC BY-SA 3.0
Temple, William, 1881-1944
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Ross, Lewis Winans, 1812-1895
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unknown - Public Domain
Hepburn, Arthur J. (Arthur Japy), 1877-1964
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unknown - Public Domain
Avery, Stanley R. (Stanley Robert), 1879-1967
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Williams, Betty
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Governo De Sergipe - CC BY-SA 2.0
Pires, Maria João
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Bass, Hyman, 1932-....
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Reginald Haines (1872-1941) - Public Domain
Horne, C. Silvester (Charles Silvester), 1865-1914
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unknown - Public Domain
Russell, Henry, 1834-1909
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Levine, Donald Nathan, 1931-....
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Caulfieldh - CC BY-SA 3.0
Caan, James.
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Public Domain
Thye, Edward John, 1896-1969
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Robert. L. - Public Domain
Rigaud, George
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Brown, Alexander, 1843-1906
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Purnell, Fred S. (Fred Sampson), 1882-1939
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Public Domain
Hofer, Bruno, 1861-1916
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Dezeuze, Daniel, 1942-....
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Teddyyy - CC BY 3.0
Savignac, Raymond, 1907-2002
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unknown photographer - Public Domain
Grundén, Per 1922-2011
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William Morris Agency (management). - Public Domain
Chevalier, Maurice, 1888-1972
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unknown - Public Domain
Mann, Margaret, 1868-1941