Scope and Contents From the Collection: This collection includes a letterbook consisting of 263 letters from other scientists to Mertens with copies of many of Mertens' replies handwritten onto the original letters. The letters are tipped into a bound volume. This includes letters from Carl Adolphe Agardh (1785–1859), J. B. G. M. Bory de Saint-Vincent (1778–1846), Augustin Pyramus de Candolle (1806–1893), Adelbert von Chamisso (1781–1838), Louis August Deschamps (1765–1842), Rene Louiche Defontaines (1750–1833), Ambrose M. F. J....