Here are the details of maps for Helensburgh:

Dumbartonshire Sheet 17.06 Craigendoran & Helensburgh (East) 1897 - published 2006; intro by Gilbert Bell. ISBN.978-1-84151-899-2 

This detailed map covers the eastern part of Helensburgh, with coverage stretching from Charlotte Street eastward to Black Wood and Camis Eskan, and from Albert Street and Millig Street East southward to Craigendoran station and pier. Several of the streets of the town are shown here, including Montrose St East, King St East, Clyde St East and the area around Eastend Public Park and Granville Street. On the reverse we include sheet 17.10 taking coverage southward a mile along the coast