- CollectionCamb. Medieval History - Papers relating to the Cambridge Medieval History Series
- SeriesBox 1-2 - Letters to and from contributing historians to Cambridge Medieval History
- SubseriesBox 1 - Letters relating to historians A-L
- File4 - Letters from Edward Armstrong
- Item1 - Autograph letter, signed, to J. R. Tanner from Edward Armstrong, Oxford
- Item2 - Autograph letter, signed, to J. R. Tanner from Edward Armstrong, Oxford
- Item3 - Autograph letter, signed, to J. R. Tanner from Edward Armstrong, Oxford
- Item4 - Autograph letter, signed, to J. R. Tanner from Edward Armstrong, Newton Abbot
- Item5 - Autograph letter, signed, to J. R. Tanner from Edward Armstrong, Oxford
- Item6 - Autograph letter, signed, to J. R. Tanner from Edward Armstrong, Oxford