The file comprises a card index with entries for the history of the mountain top, ascents and races, vandalism and litter, bibliographic references, literary descriptions, history of tourist facilities and an early printed guide to the summit

The file comprises a card index, the main sections referring to weather, the shape of the Snowdonia landscape (i.e. geology and scenery), natural history of wild plants and fauna, nature reserves, human history and man's impact on the landscape, various means of access for visitors to the area, miscellaneous entries, including a subsection on Edward Lhuyd, a list of places to visit, and records of photographs and bibliography, 1933-1985. Some entries are accompanied by fuller notes, especially on early Snowdonia naturalists and travellers, literary quotations and references, press cuttings, sketches and correspondence, including letters from Peter Benoit, 1960-1966, Arthur [Chater], 1984, Derek Ratcliffe, 1963, and Evan Roberts, 1962, all mainly concerned with wild plants.