- FondsBeaton - Papers of Sir Cecil Beaton
- SeriesA - Correspondence
- SubseriesA1 - General letters to Beaton
- File478 - Siegfried Loraine Sassoon. Autograph letters to Beaton.
- Item1 - Autograph letter signed to Beaton, from Wiltshire.
- Item2 - Autograph letter signed to Beaton.
- Item3 - Autograph letter signed to Beaton, from Wiltshire.