- C9.
- Cyfres
- [1910]-1980.
Rhan oThe Tŷ Cerdd Archive,
Arrangements, compositions, sketches and some correspondence. Some of the conductor scores and parts scores have been marked with later performance notes. C9/214 is a file created by the archivist of correspondence (mostly from 1940s) and later lists of works compiled by the B.B.C. in the 1980s.
Lewis, Idris, 1889-1952.