[Drawing] Devonport Water Works: Plan of the leet from Devonport to the weir head / J. Greenslade, surveyor. 1797. [Plan and section (on roll), ms. & line drawing with wash, scale 1" : 10ch. Covers distance of over 14 miles. Includes layout of Devonport Dockyard. Bears later(?) stamp 'Mr Bampton's Office, Plymouth', and stamp 'E.C. Bisshopp, Mr Bampton's Office, 12 Alfred St., Plymouth Oct 1847'. Bears also stamp 'Jh16', a drawing code number of Thomas Hawksley's water engineering company]