The file comprises handwritten notes on loose sheets and index cards, covering the discovery, identification, location and lists of alpine plants, mainly in the upland areas of Merionethshire, a set of notes for a lecture on the history of botanical and ecological studies on Cader Idris, with a schematic biography of the Snowdonia botanist E. Price Evans, literary and bibliographic references, typed and handwritten surveys, reports and newsletters relating to the ecology of certain Sites of Special Scientific Interest (SSSI) in North Wales, 1968-1996, photocopies and off prints, including two papers on the flora of Cader Idris by E. Price Evans, 1932, and press articles about Evan Roberts, 1979, another Snowdonia botanist, occasional items relating to plants in Scotland and other areas of Britain, pressed and dried specimens of alpine ferns with relevant notes, and a large quantity of letters and enclosures concerning similar topics, notably from Peter Benoit (15), 1962-1995, Arthur Chater, (7), 1985-1994, Dafydd Davies (27), 1986-1997, E. Price Evans, (1), 1957, Dewi Jones (24), 1988-1997, with an enclosed typescript article on William Williams, the botanical guide of Snowdonia, Derek Ratcliffe of the Nature Conservancy Council (5), 1983, and Richard (`Dick') Roberts (7), 1985-1991.