- FondsBeaton - Papers of Sir Cecil Beaton
- SeriesA - Correspondence
- SubseriesA1 - General letters to Beaton
- File18 - Lady Cynthia Mary Evelyn Asquith. Autograph letters to Beaton.
- Item1 - Autograph letter to Beaton, from Sussex
- Item2 - Autograph letter to Beaton, from Sussex
- Item3 - Autograph letter to Beaton, from Paddington, London
- Item4 - Autograph letter to Beaton, from Sullington, Sussex