Last updated on March 14th, 2019 at 04:02 pm
Yes, this does cover the Calderdale area!
A useful tool for comparing present day geography with historical maps. Choose a display from Google Maps type display (Satellite, Terrain, street) or OS ‘open data’then overlay a historic map. A slider allows you to move from one map to the other with a midway point when your first choice is seen through the historic map.
The resource is here