This image is taken from [Notebook belonging to Wilder Penfield, 1914-1918] (Medical Heritage Library, Inc.) Tags: penfield wilder 18911976 nervous system surgery laboratory notebooks medical illustration instruments apparatus mcgill university library digitized title osler history medicine digital collection mcgilluniversityosler mcgilluniversity medicalheritagelibrary toronto date1914 idmcgilllibrarypenwu115434