| Operum mathematicorvm Johannes Wallisi. (1656) by John Wallis | | |
| Opuscula duo (1687) by James Ussher | | |
| Oratio habita in Academia Cantabrigiensi, in solenni Magnorum Comitiorum die, anno Domini MDCLX (1660) by Richard Love | | |
| Pacis evangelicæ quærendæ sectandæque ohdopoiēsis, sive viarum stratura (1657) by John Dury | | |
| Panoplia tou Theou. The whole-armor of God (1616) by William Gouge | | |
| Parallelismus nov-antiqui erroris Pelagiarminiani (1626) by Daniel Featley | | |
| Patience and its perfect work, under sudden & sore tryals (1666) by Thomas Goodwin | | |
| Pelagius redivivus. Or Pelagius raked out of the ashes by Arminius and his schollers (1626) by Daniel Featley | | |
| Peters enlargement vpon the prayers of the Church (1624) by Robert Harris | | |
| Pirke avot Capitula patrum (1651) by Francis Taylor | | |
| Polycarpi et Ignatii epistolae: una cun vetere vulgata interpretatione Latina, ex trium manuscriptorum codicum collatione, integritati suæ restitutâ (1648) by James Ussher | | |
| Prælectiones theologicæ (1661) by Richard Holdsworth | | |
| Prælectiones theologicæ (1679) by Anthony Tuckney | | |
| Prifannau crefydd gristnogawl a llwybraidd foddbyrr (1658) by James Ussher | | |
| Protestation of the noblemen, barrons, gentlemen, borrowes, ministers, and commons, subscribers of the confession of Faith and Covenant (1638) by Alexander Henderson | | |
| Quæstiones duæ unica prælectione in maioribus comitiis Cantabrigiæ determinatæ, anno 1642 (1653) by Richard Holdsworth | | |
| Reasons against the rendering of our sworne and subscribed confession of faith (1638) by Archibald Johnston | | |
| Reasons delivered by the Right Honourable the Earle of Manchester: for nulling the forc’d votes, and against the high and visible insolencies of those that forced the Houses. (1647) by Edward Montagu | | |
| Reasons shewing the consistency of the place of Custos Archivorum with that of a Savilian Professor. (1658) by John Wallis | | |
| Reasons shewing the necessity of reformation of the publick (1660) by Cornelius Burges | | |
| Redintegratio amoris, or A union of hearts (1647) by John Cook | | |
| Reformation of church-government in Scotland, cleered from some mistakes and prejudices, by the Commissioners (1644) by Alexander Henderson | | |
| Reverend and beloved (1651) by Lazarus Seaman | | |
| Reverendi viri Dom. Joannis Davenantii (1654) by Thomas Gataker | | |
| Roma ruens, Romes ruine (1644) by Daniel Featley | | |
| Sabbatum Redivivum: or, the Christian sabbath vindicated, in a full discourse concerning the sabbath and the Lord’s day (1652) by Herbert Palmer | | |
| Sabbatum redivivum. Part 1 (1645) by Daniel Cawdrey | | |
| Sabbatum redivivum. Parts 2-4 (1652) by Daniel Cawdrey | | |
| Sacra nemesis, the Levites scourge, or, Mercurius Britan (1644) by Daniel Featley | | |
| Saviliani Exercitationes tres (1678) by John Wallis | | |
| Scrinia reserata (1693) by John Hacket | | |
| Scripture and reason pleaded for defensive armes (1643) by Herbert Palmer | | |
| Serenissimo Regi Carolo, regni anno decimo quarto, cum celsissima principe Katharina, nuptias consummanti (1662) by John Wallis | | |
| Several treatises (1683) by George Morley | | |
| Severall tracts (1646) by Henry Hammond | | |
| Shadowes without substance, or, Pretended new lights (1646) by Thomas Gataker | | |
| Sion College what it is, and doeth (1648) by Cornelius Burges | | |
| Sir Arthur Hasilrig’s meditations (1660) by Arthur Hesilrige | | |
| Sive Adversaria miscellanea; animadversionum variarum libris sex comprehensa (1651) by Thomas Gataker | | |
| Six books of late controversie in defence of the Church of England (1656) by Henry Hammond | | |
| Socinianisme in the fundamentall point of justification discovered, and confuted (1641) by George Walker | | |
| Some genuine remains of the late pious and learned John Lightfoot, D.D. Consisting of three tracts (1700) by John Lightfoot | | |
| Some of the differences and alterations in the present Common-prayer-book (1660) by Cornelius Burges | | |
| Stana noemata, or, The wiles of Satan in a discourse (1666) by William Spurstowe | | |
| Strange and remarkable prophesies and predictions of the holy, learned, and excellent James Usher (1678) by James Ussher | | |
| Sunday a Sabbath. Or, A preparative discourse for discussion of sabbatary doubts (1641) by John Ley | | |
| Superstitio superstes: or, The reliques of superstition newly revived. (1641) by Daniel Cawdrey | | |
| Syllabus documentorum, quæ ab ecclesiis & magistratibus () by John Dury | | |
| Tactica sacra, sive de milite spirituali pugnante, vicente & triumphante dissertatio (1657) by John Arrowsmith | | |
| Tentations. Part 1-2 (1633) by Richard Capel | | |
