Here are the details of maps for Caernarfon:
This detailed map gives very good coverage of the town of Caernarfon, with coverage extending from Warfield Road southward to Is-Helen, the Gasworks and South Road, and eastward to St Peblig's church.
Features include town centre with individual buildings neatly shown, the Castle, railway with station and southern approaches, Slate Quay, New Basin, wharves, Twt Hill, Castle Square, town walls, Territorial Headquarters, Segontium, chapels, schools, Royal Hotel, Turf Square, Afon Seiont, Open Air Swimming Baths, St Peblig's church, Borough Hospital for infectious diseases, schools etc. On the reverse we include a 1910 trade directory of the town.