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  1. Asa Gray and John Torrey correspondence,
    By: Gray, Asa, - Britton, Elizabeth G. (Elizabeth Gertrude), - Gray, Jane Loring,
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    Subjects: (1838-1842)  (Albert Baldwin),  (Albert),  (Alexander Dallas),  (Alvan Wentworth),  (Andrew Jackson),  (Arnold),  (Augustus Addison),  (Benjamin Daniel),  (Carl Friedrich),  (Charles Christopher),  (Charles Coffin),  (Christian Gottfried),  (Constantine Samuel),  (Edward Griffin),  (Franz)  (Friedrich Ernst Ludwig),  (Friedrich),  (George Barrell),  (George Robins),  (Henry Barron),  (Henry Darwin),  (Henry Nicholas),  (Henry Parker),  (Isaac Farwell)  (James Ellsworth),  (James Finlay Weir),  (James William),  (Jean Baptiste Geneviève Marcellin),  (Jean Étienne),  (Jean-Baptiste),  (Jeremiah N.),  (John Strong),  (John Wright),  (Joseph Gerhard),  (Joseph Nicolas),  (Karel Bořiwoj),  (Lewis Caleb),  (Matthias Jacob),  (Miles Joseph),  (Mina B.),  (Moses Ashley),  (Nathan Wright),  (Randolph Barnes),  (Robert Eglesfeld),  (Robert James),  (Robert Maskell),  (Samuel Botsford),  (Stephen Thayer),  (William Dunlop),  (William Frederick)  (William Hemsley),  (William Henry),  1727-1810  1754-1842  1765?-1842  1766-1844  1766-1849  1772-1864  1773-1847  1773-1858  1774-1
    BHL Collections: New York Botanical Garden
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  2. Carl Bogenhard and John Torrey correspondence, 1852-1853
    By: Bogenhard, Carl,
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    Subjects: 1788-1869  1796-1873  1810-1888  1811-1853  Anemone nemorosa  Bogenhard, Carl,  Botanical specimens  Chemistry  Correspondence  Drugstores  Freiherr von,  Gray, Asa,  New York  New York (State)  Reichenbach, Karl,  Taschenbuch der flora von Jena  Torrey, John,  
    BHL Collections: John Torrey Papers | New York Botanical Garden
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  3. Correspondence : Leonhardi (Hermann) and Engelmann (George),1857-1873.
    By: Leonhardi, Hermann Karl, Freiherr von,
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    Subjects: (Botanist)  (Jefferson City)  1781-1832  1809-1875  1809-1884  1817-1891  1838-1908  19th century  Botanical specimens  Correspondence  Engelmann, George,  Europe  Evolution (Biology)  Freiherr von,  Kraus, Otto  Krause, Karl Christian Friedrich,  Leonhardi, Hermann Karl,  Letters  Nägeli, Carl,  Pasch, Konrad  Philosophy  Political science  Politics and government  Salmerón y Alonso, Nicolás,  Seeds  Seitz, Franz  Social conditions  
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
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  4. Der Kreislauf des Lebens : Physiologische Antworten auf Liebig's Chemische Briefe /
    By: Moleschott, Jacob,
    Edition: 3. verm. und verb. Aufl.
    Publication info: Mainz :Victor von Zabern,1857.
    Holding Institution: Francis A. Countway Library of Medicine (archive.org)
    Subjects: 1803-1873  Chemische Briefe  Freiherr von,  Liebig, Justus,  physiology  
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  5. Lives of the brothers Humboldt, Alexander and William.
    By: Klencke, Hermann, - Bauer, Juliette., - Schlesier, Gustav.
    Publication info: London,Ingram, Cooke & co.,1852.
    Holding Institution: School of Theology, Boston University (archive.org)
    Subjects: 1767-1835  1769-1859  Freiherr von,  Humboldt, Alexander von,  Humboldt, Wilhelm,  
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