- 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
- File16 - Letters from W. G. Constable
- Item1 - Autograph letter, signed, to J. R. Tanner from W. G. Constable, London
- Item2 - Autograph letter, signed, to J. R. Tanner from W. G. Constable, London
- Item3 - Autograph letter, signed, to J. R. Tanner from W. G. Constable, London