- NLW ex 1667.
- Ffeil
- 1975.
Papers, including descriptions of sequences, transcripts of commentary, and correspondence concerning a 16mm. film (now held by the Library's Sound and Moving Image Collection) entitled 'The Story of a Valley', relating to the Tryweryn valley and the creation of a reservoir at Llyn Celyn, produced by pupils at Friars School, Bangor.