- 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
- File86 - Letters from L. Thorndike
- Item1 - Typewritten letter, signed, to J.R. Tanner from Lynn Thorndike, New York
- Item2 - Typewritten letter, signed, to J.R. Tanner from Lynn Thorndike, New York
- Item3 - Typewritten letter, signed, to J.R. Tanner from Lynn Thorndike, New York