The drawing is based on a survey of October 1930. In the bottom right corner is the initials of the draftsman and the date 1956, there is a note at bottom left that the plan was 'revised 1956', both of these dates were on the original that this item was copied from. Section lines AB and CD are shown on both plans.
The plan shows the position of some lead pipes, brick facing and oak posts. It also includes some sections of passages which run through the thickness of the walls (dashed lines), below embrasures which are also shown.
Copyright Crown Copyright. Historic England Archive
People & Organisations
Creator of Archive: Ministry Of Works