Here are the details of maps for Helmsley:
This detailed map covers the small Ryedale town of Helmsley. The map is double-sided for maximum coverage. The main map covers the southern part of the town, from the Market Place southward to Low Woods Farm, and includes the Castle; the eastern face of Duncombe Park house (at margin of map) with the east Terrace, Tuscan Temple, Ionic Temple; railway with station, shown with full track layout; River Rye, Helmsley Bridge, Bridge Street, Ryegate, Pottergate. On the reverse we include part of adjacent sheet 89.07 which continues coverage north to include the northern part of the town, including Bondgate, Court House, Market Place, Workhouse, All Saints church, Canons Garth, High Street.
And here is an index map showing the areas covered.