- 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 2 - Letters relating to historians M-W
- File68 - Letters to and from G. R. Potter
- 7 more...
- Item8 - Autograph letter, signed, to G. R. Potter from J. R. Tanner, Cambridge
- Item9 - Autograph letter, signed, to Dr Tanner from G. R. Potter, Norwich
- Item10 - Autograph letter, signed, to Dr Tanner from G. R. Potter, Norwich
- Item11 - Autograph letter, signed, to Dr Tanner form G. R. Potter, Norwich
- Item12 - Autograph letter, signed, to Dr Linehan from G. R. Potter, Sheffield