Contains handwritten and typed copies of 'Cycles of Change at Spurn Head, Yorkshire, England' with copy of the published article in 'Shore & Beach' (Apr 1967); multiple handwritten and typed copies of 'Spurn Head: Its History and Evolution'; multiple typed copies of 'Spurn Head: Its History and Evolution - a summary'; handwritten and typed copy of Spurn Head and its Predecessors' and typed article 'Spurn Point and its Predecessors' by George de Boer from 'The Naturalist' (1963); handwritten copy of 'The Evolution of Spurn Head'.

Also includes handwritten research notes and illustrations of maps of Spurn; statement of account for Institute of British Geographers Annual Conference 1963; typed article for 'YNT Bulletin' [Yorkshire Naturalists Trust] 'Coastal Physiography: research work at Spurn'; Wensleydale Society's magazine with article by George de Boer 'Spurn Head: Its History and Evolution' with annotations (Nov 1961); article 'At the world's end' by Ann Holt from 'The Countryman' (Autumn 1988); booklet 'Sunk Island' edited by Chris Unwin and Liz Arnold for South Holderness Countryside Society (May 1988); handwritten report to East Riding Joint Planning Committee on coast erosion and accretion by County Planning Officer (c.1942); leaflet from YNT 'The Spurn Fund' detailing names and donations and shows George de Boer as a new member (Nov 1959); list of potential chapters for Spurn Head book with possible authors; newspaper cutting detailing living conditions at Spurn; correspondence related to the editing of an unnamed article (Feb 1964), to research questions (1959, 1962, 1964), a reference to George de Boer interview for Aber Chair (Feb 1964) and an invitation to lecture to Nottingham University Geographical Society (1963).