File:GBHGIS sample map.JPG

Map showing unemployment in eastern Lancashire and the West Riding of Yorkshire in 1931, combining census data, boundaries from the Great Britain Historical GIS and a scanned image of the Ordnance Survey 10 Mile to One Inch Map of 1904. Image generated by Humphrey Southall using the Vision of Britain through Time system in March 2007. All components are out of copyright, and the map itself is freely usable under the site's usage conditions, subject to acknowledgement.

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