Folder headed, 'Pallidotomy' containing a list of slides for 'Lecture on the Surgical treatment of Parkinsonism by coagulation of the globus pallidus or lateral nucleus of the thalamus'; and typescript of talk on 'Stereotaxic surgery in Dyskinesia' given by Gerard Guiot at joint meeting of Society British Neurological Surgeons and the Société de Neurochirurgie de langue francaise, June 1960, which pays tribute to Dott and his work.