- 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
- File31 - Letters to and from L. Halphen
- Item1 - Autograph letter, signed, in French, 'Cher Monsieur', from L. Halphen, Bordeaux
- Item2 - Copy of letter from J. R. Tanner, Cambridge