File:CajalHippocampus.jpegDrawing of the neural circuitry of the rodent hippocampus. Histologie du Systeme Nerveux de l'Homme et des Vertebretes, Vols. 1 and 2. A. Maloine. Paris. 1911.File:CajalCerebellum.jpgDrawing of the cells of the chick cerebellum, from "Estructura de los centros nerviosos de las aves", Madrid, 1905.File:SparrowTectum.jpgDrawing of a section through the optic tectum of a sparrow, from "Estructura de los centros nerviosos de las aves", Madrid, 1905.File:Cajal Retina.jpgFrom "Structure of the Mammalian Retina" Madrid, 1900.File:PurkinjeCell.jpgDrawing of Purkinje cells (A) and granule cells (B) from pigeon cerebellum by Santiago Ramón y Cajal, 1899. Instituto Santiago Ramón y Cajal, Madrid, Spain.
