A scrap book lettered 'Afonydd Cymru' compiled by John Jones ('Myrddin Fardd'). It contains press cuttings entitled 'Afonydd Cymru' (from Yr Haul, 1870-1, passim), 'Yr Afon Wynion' by 'Glan Wynion', Dolgellau and by 'E' [from Y Cymro], 'Llenyddiaeth yr Afonydd' by 'Idnerth', Buth y Bardd, 'Taith ar hyd Glan yr Afon Ceri, Ceredigion' (incomplete), 'Prif afonydd swyddi Caer yn Arfon a Meirion' by 'Peris'' (from Y Gwyliedydd, May 1833), 'Rhestr o brif lynoedd Cymru', 'Llynoedd Sir Gaernarfon', etc., with annotations and additions in the hand of the compiler.

The file comprises a card index divided into sections on lakes, classified according to area and type, wetlands and rivers, indexed by name, plants, insects, fish and mammals, 1947-1979. Some of the entries are expanded by additional notes on history, geology, distribution and early discoveries of certain species, threats and conservation issues, topographical descriptions, human activities, bibliographic references, preparatory notes and personal reminders, and derivations of place names, sometimes accompanied by press cuttings, species lists, typed reports, sketches and printed pamphlets