- FondsSylvester - Papers of James Joseph Sylvester
- SeriesBox 2-7 - Letters
- FileSylvester JJ (Misc SY1/1) - Letters to St John's College Fellows
- ItemSY1/1/1 - A.L.s., from JJS to Charles Taylor (Master of St John's)
- ItemSY1/1/2 - A.L.s., from JJS to Sir Joseph Larmor
- ItemSY1/1/3 - A.L.s., from JJS to Sir Joseph Larmor