Santiago Ramón y Cajal (May 1, 1852 – Octiber 17, 1934) was awarded the Nobel Prize in 1906 (jointly with Camillo Golgi). This Spanish scientist is considered one of the founders of neuroscience. Ramón y Cajal was very prolific in histologic studies of the central nervous system. His most salient work is included in  (Spanish) and  (English).
 Ramón y Cajal S. Estudios sobre la degeneración y regeneración de sistema nervioso. 2 vols. Madrid: N. Moya, 1913–14.
 S. Ramón y Cajal, Studies on the degeneration and regeneration of the nervous system, 2 vols, Oxford University Press, Oxford (1928).
More information: Wikipedia entry for Ramón y Cajal.