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Lincoln Alexander Centre - CC0 1.0
Colonel Gentil - Public Domain
George Grantham Bain Collection (Library of Congress) - Public Domain
Josef Kriehuber (1800-1876); Foto Peter Geymayer - Public Domain
original uploader -
U.S. Navy - Public Domain
Government of Ceylon - Public Domain
not stated - Public Domain
Adolphe Lalauze (1838-1906) - CC BY-SA 3.0
Pat Padua - CC BY 2.0
unknown - Public Domain
International Soil Science Society, 1927 - Public Domain
Steve Bowbrick - CC BY 2.0
Reproducción - Public Domain
Gage Skidmore - CC BY-SA 3.0
Erinpet1 - CC BY-SA 3.0
Image from Wikimedia Commons
Lincoln Alexander Centre - CC0 1.0
Alexander, Lincoln M. (Lincoln MacCauley), 1922-2012
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Colonel Gentil - Public Domain
Aḥmad Shāh Durrānī, Amir of Afghanistan, ca. 1723-1772
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George Grantham Bain Collection (Library of Congress) - Public Domain
Austin, Gene, 1900-1972
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Josef Kriehuber (1800-1876); Foto Peter Geymayer - Public Domain
Sainte-Aulaire, comte de (Louis Clair de Beaupoil), 1778-1854
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original uploader -
Seebeck, Thomas Johann, 1770-1831
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U.S. Navy - Public Domain
Kauffman, Draper L. (Draper Laurence), 1911-1979
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Government of Ceylon - Public Domain
Arunachalam, Ponnambalam, Sir., 1853-1924
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Hammond, John Hays, 1888-1965
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not stated - Public Domain
Laestadius, L. L. (Lars Levi), 1800-1861
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Adolphe Lalauze (1838-1906) - CC BY-SA 3.0
Vicaire, Gabriel, 1848-1900
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Pat Padua - CC BY 2.0
David, Hal, 1921-2012
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Stanhope, Edward, 1840-1893
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Pope, John, 1821-1881.
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unknown - Public Domain
Hanson, Alexander Contee, 1786-1819
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Brown, William G. (William Gay), 1800-1884
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unknown - Public Domain
Burrow, Rube, 1854-1890
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Millinder, Lucky
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Henshaw, David, 1791-1852
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Bormann, Martin, 1900-1945?
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International Soil Science Society, 1927 - Public Domain
Marbut, Curtis Fletcher, 1863-1935
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Bowlin, James B. (James Butler), 1804-1874
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Meyer, Conrad Ferdinand, 1825-1898
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Steve Bowbrick - CC BY 2.0
Previn, André, 1929-
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Cheney, Lynne V.
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Castrén, M. Alexander (Matthias Alexander), 1813-1852
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unknown - Public Domain
Anderson, Victor E. (Victor Emmanuel), 1902-1962
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Reproducción - Public Domain
Figuerola, Justo, -1854
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Ysaÿe, Eugène, 1858-1931
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Gage Skidmore - CC BY-SA 3.0
Van Dyke, Dick, 1925-
Image from Wikimedia Commons
Erinpet1 - CC BY-SA 3.0
Petrie, Constance Campbell