PLAN FOR THE IMPROVEMENTS OF THE SEWERAGE OF A PART OF the Parish of St. Marylebone
Surveyor: Phillips, John
This plan was produced by the Office for Sewers of the City of Westminster. It describes the proposed improvements of the sewage system in the parish of St. Marylebone. Its title and a key to symbols appear at bottom left, with compass star at top centre and scale bars at bottom centre. Down the right side margin are represented longitudinal sections of parts of the parish and vertical sections of the main and collateral sewage pipes being laid down.