Operative drawing of pituitary region with cavernous sinus labelled. Annotations on the back read "post operative sk = estimated arangement of adenoma with cav. sinus invasoin, subdural permeation & sylvian extension" and "Patient's name op. 19.10.40 drawn 14.9.50 from post op sketch Manchester University. Fig 12 Jefferson Sherrington Lecture".
This drawing features as figure 12 in the publication G. Jefferson, 'The invasive adenomas of the anterior pituitary', The Sherrington Lectures III University of Liverpool, 1955, in which it is described as a "post-operative sketch showing estimated relationships of adenoma with cavernous invasion, sub-dural permeation and Sylvian extension".
Initialled by the artist at the bottom of the drawing.