- 1062-1422.
- Is-is-fonds
- 1633, 1786-1927.
Arranged into letters collected by Sir John Williams (1062-1089), letters to other people (1090-1092), letters to Sir John Williams (1093-1268), miscellaneous correspondence to Sir John Williams (1269-1351), and letters found after the completion of the schedule (1352-1422).