- 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
- File30 - Letters from Katharine Gielgud
- Item1 - Typewritten letter, signed, to Professor Whitney from Katharine Gielgud, London
- Item2 - Autograph letter, signed, to J. R. Tanner from Katharine Gielgud, London