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Choose an historic map overlay:

Zoom to this map / map series:

Change transparency of overlay:


These overlay lists automatically update to those covering the map



    Explore Georeferenced Maps - Help

    This application allows you to view selected georeferenced maps as overlays.

    1. Choose an historic map overlay: that you would like to view, by selecting it from the drop-down lists in the left-hand panel:
      Use both 1. Select a category: and 2. Select a map / map series:.
    2. Zoom in on your area of interest to view the overlay in detail.
    3. Change transparency of overlay by sliding the blue circular transparency slider in the left-hand panel.

    Restrictions on Re-use

    • Several of these Ordnance Survey series have been digitised for the Library by a third party. Use of these digitised maps for commercial purposes is currently restricted by contract. These restrictions cover the re-use of copies and extracts, as well as commercial use directly through our websites (Further information).

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