- FondsSylvester - Papers of James Joseph Sylvester
- SeriesBox 2-7 - Letters
- SubseriesBox 2-3 Folder 2-9 - Letters to JJS
- 32 more...
- Item92 - A.L.s., in French, from Camille Jordan, Paris
- Item113 - A.L.s., from Christine Ladd
- Item114 - A.L.s., from Sidney Lanier, Baltimore
- Item115 - A.L.s., from I. H. Lefroy
- File118-120 - A.Ls.s, from Rudolf Lipschitz, Bonn
- File121-122 - A.Ls.s, in French, from Edouard Lucas, Paris
- 63 more...