Old Ordnance Survey Six-inch maps (1842-1952) from the National Library of Scotland. Includes the best free large-scale old maps of Lancashire to be found anywhere on the web!
Ordnance Survey 1924 One-Inch (414 Kb)
Lancashire County Council Maps and Related Information Online (MARIO)
Access maps new and old, old air photos, and huge amounts of info
The following maps are from the
Lancashire County Council Environment Directorate Old Maps website: