Three drawings, one above the other, of an operation on the cervical spine. Annotations on the back read "50/10/13/14 Fig 17 Mr Tutton" and " Radiol. Oct. 50 Reid & Tutton".
This drawing features as fig.17 in the publication H. Davies, R.G. Reid, and G.K. Tutton, 'Discussion on myelography', Proceedings of the Royal Society of Medicine, 1951, 44(10), pp.881-93. The caption in the article offers the following description "Three operation drawings of an anterolateral prolapsed cervical disc".
C3, C4, C5, C6
Labels across the top accompanying first drawing, the second two just have C4 marked on.