File is comprised of typed and photocopied letters and attached documents produced by Simon Norton, Terry Figg, John Barker, and others (1991-2001), relating to surveying Sites of Special Scientific Interest (SSSIs) for conservation requirements and road-building limitations, including Kebworth Woods and Birkham Wood, and extending the Baldock-Alconbury section of the A1.
Letters from Simon Norton, Terry Figg, John Barker and others relating to the A1 motorway project, conservation and landscape analysis of Birkham Wood, and Harrogate and Knaresborough Sites of Special Scientific Interest (SSSIs)