Fundamentals of Operative Techniques in Neurosurgery by Connolly et al. Useful pocket book for neurosurgical techniques
Diagnostic Imaging: Brain by Osborn. Introduction to diagnostic neuroradiology. Very good for medical students and junior residents
Marino's The ICU Book by Marino. Excellent handbook for management of patients in the ICU.
The NeuroICU Book by Lee. Broad handobok for management of patients in the neuroICU. Great to have to reference