Tomorrow's History - Maps: " major feature of this site is the presentation of high-quality, seamless modern and historic Ordnance Survey mapping.
By permission of the Ordnance Survey, all Tomorrow's History website users are able to view modern Ordnance Survey maps for anywhere in the North East (the modern local authority areas of Northumberland, Durham, North and South Tyneside, Newcastle, Gateshead, Sunderland, Hartlepool, Darlington, Stockton, Middlesbrough and Redcar & Cleveland). There is then the choice to view a more detailed map, or an equivalent historic map from the old Ordnance Survey County Series.
Six Inch to One Mile County Series maps of all the modern local authority areas, as above, are included in all the first three editions, surveyed around 1860, 1898 and 1913.
For urban areas of Tyneside, Wearside and Teesside there is also the highly detailed Twenty Five Inch to One Mile mapping, which is detailed enough for most individual houses to be identified. Users are able to compare maps of different dates, and to print out small areas of mapping.
Maps are also integrated with the main Tomorrow's History database content, so that it is possible to move from a particular map to view whatever historic images or documents are held on the system for that area."