Here are the details of maps for Wells:
This detailed map provides good coverage of the Cathedral City of Wells. The map shows Keward to the west and stretches east to Tor Hill Quarry. Features include Wells Union Workhouse, the great Cathedral, St Cuthbert's Church, Hospital (for infectious diseases), Engineering Works and Gas Works. Wells had a complicated railway history and the map includes both GWR and Somerset & Dorset stations and engine sheds, with details of sidings, turntables etc. An extract from Kelly's Directory of Somerset is featured on the reverse.
You might find this index map useful.