- FondsSylvester - Papers of James Joseph Sylvester
- SeriesBox 2-7 - Letters
- SubseriesBox 2-3 Folder 2-9 - Letters to JJS
- 98 more...
- Item219 - A.L.s., from J. Derffel?
- Item220 - A.L.s., from John J. Wilson
- Item221 - A.L.s., from J. S. Ely
- Item222 - A.L.s., from Rachel d'Avigdon
- Item223 - Fragment of A.L. in French from ?
- File9 - Fragments and miscellaneous documents