Books in Mathematics (sorted alphabetically)
- Plane Geometry G. A. Wentworth
- Potentialfunction und das Potentiall; ein Beitrag zur mathematischen Physik (German) R. Clausius
- Primer of Quaternions Arthur S. Hathaway
- Randwertaufgaben bei Systemen von linearen partiellen Differentialgleichungen erster Ordnung (German) Wallie Abraham Hurwitz
- Researches on curves of the second order George Whitehead Hearn
- Review of Algebra Romeyn Henry Rivenburg
- Romance of Mathematics P. H. Ditchfield
- Science and hypothesis Henri Poincaré
- Scrap-Book of Elementary Mathematics: Notes, Recreations, Essays William Frank White
- Sechs Vorträge über ausgewählte Gegenstände aus der reinen Mathematik und mathematischen Physik (German) (French) Henri Poincaré
- Short Account of the History of Mathematics W. W. Rouse Ball
- Short Cuts in Figures A. Frederick Collins
- Solid Geometry with Problems and Applications (Revised edition) N. J. Lennes and H. E. Slaught
- Some Famous Problems of the Theory of Numbers and in Particular Waring's Problem G. H. Hardy
- Space—Time—Matter Hermann Weyl
- Spherical Trigonometry: For the Use of Colleges and Schools I. Todhunter
- Square Root of 10 Robert J. Nemiroff and Jerry T. Bonnell
- Square Root of 2 Robert J. Nemiroff and Jerry T. Bonnell
- Square Root of 2 Stan Kerr
- Square Root of 3 Robert J. Nemiroff and Jerry T. Bonnell
- Square Root of 4 to a Million Places Norman L. De Forest
- Square Root of 5 Robert J. Nemiroff and Jerry T. Bonnell
- Square Root of 6 Robert J. Nemiroff and Jerry T. Bonnell
- Square Root of 7 Robert J. Nemiroff and Jerry T. Bonnell
- Square Root of 8 Robert J. Nemiroff and Jerry T. Bonnell