Contains correspondence to and from various sources including Yorkshire Naturalists' Trust (YNT) and its members, Spurn Bird Observatory (SBO), British Trust for Ornithology, British Isles Bee Breeders' Association and Rothamsted Experimental Station.

Topics include bait digging (1975), asking for support for the building of an interpretative centre at Spurn (Jan 1977), installation of bee hives, Little Terns (Mar 1978), expressing importance of traps at Spurn Head and includes maps showing population changes of certain species (Oct 1972), speed limit being ignored on the Spurn Road (Sep 1974), possible provision of a shop at Spurn (Feb 1975), changes to the Royal National Lifeboat Institution (RNLI) cottages and the re-siting of the Bird Observatory (Dec 1975), article in 'The Angling Times' about night fishing at Spurn (Dec 1970) and repairs to Warren Cottage and the moving of the sea watching hut (Dec 1977).

Also includes information on status of Bird Observatory written for YNT and Yorkshire Naturalists' Union, handwritten minutes of meeting of SBO detailing issues with the old Lifeboat Cottages and Management Plan (Dec 1975), yearly reports from SBO Committee (1973-1974, 1974-1975), list of insects found at Spurn (Sep 1975), two copies of proposed running order of BBC TV programme 'In the Country' to be filmed at Spurn, one annotated (Jun 1980), list of the duties of the Spurn Warden, summary of lecture 'Spurn Head, Yorkshire, as a nature reserve, with special reference to the Lepidoptera' (Feb 1972) and notes detailing activities of birds and insects (1970, 1973).