Former Owner
- Santa Maria di Rosate1
- Santa María de la Oliva1
- Schenck'sche Fide-Kommiss-Bibliothek1
- Schøyen Collection1
- Seitenstetten Abbey1
- Seymour Stocker Kirkup1
- Sidney Graves Hamilton1
- Sigurd Wandel1
- Simhah Pinsker1
- Sion Segre Amar1
- Sir John Arthur Brooke, 1st Bt.1
- Sir John Chetwode, 4th Baronet1
- Sir John Lawson, 2nd Bt.1
- Sir William Henry Ingilby, 4th Bt.1
- Sir William Stirling-Maxwell, 9th Baronet1
- Sokol Books Ltd.1
- Sonnyng, John1
- Sonnyng, William1
- St. Emmeram's Abbey1
- St. Matthias' Abbey1