- FondsBeaton - Papers of Sir Cecil Beaton
- SeriesA - Correspondence
- SubseriesA1 - General letters to Beaton
- File166 - Sir Michael Duff. Autograph letters to Beaton.
- Item1 - Autograph letter to Beaton, from Bangor
- Item2 - Autograph letter signed to Beaton, from London
- Item3 - Autograph letter signed to Beaton, from Bangor
- Item4 - Autograph letter to Beaton
- Item5 - Typescript letter signed to Beaton, from Bangor
- Item6 - Autograph letter signed to Beaton, from Bangor
- Item7 - Autograph letter signed to Beaton, from Bangor
- Item8 - Autograph letter signed to Beaton, from Bangor
- 2 more...