| Of idolatry (1646) by Henry Hammond | | |
| Of resisting the lavvfull magistrate under colour of religion, and appendant to it, or the word krima, rendred damnation, Rom. 13 (1646) by Henry Hammond | | |
| Of scandall (1644) by Henry Hammond | | |
| Of schisme (1653) by Henry Hammond | | |
| Of sinnes of vveaknesse, vvilfulnesse, and appendant to it (1645) by Henry Hammond | | |
| Of svperstition (1645) by Henry Hammond | | |
| Of the constitution, right, order, and government of the churches of Christ (1696) by Thomas Goodwin | | |
| Of the morality of the fourth commandement (1641) by William Twisse | | |
| Of the nature and vse of lots; a treatise historicall and theologicall (1619) by Thomas Gataker | | |
| Of the povver of the keyes (1647) by Henry Hammond | | |
| Of the reasonableness of Christian religion (1650) by Henry Hammond | | |
| Of vvill-vvorship (1644) by Henry Hammond | | |
| Old Mr. Edmund Calamy’s former and latter sayings upon several occasions (1674) by Edmund Calamy | | |
| On the sad losse of the truly honourable Robert Lord Brook an elegie, to his vertuous and noble lady (1643) by John Wallis | | |
| Opera quædam miscellanea: quæ versa pagina indicabit. (1699) by John Wallis | | |
| Operum mathematicorum pars altera: qua continentur de angulo contactus & semicirculi, disquisitio geometrica (1656) by John Wallis | | |
| Operum mathematicorum pars prima (1657) by John Wallis | | |
| Operum mathematicorvm Johannes Wallisi. (1656) by John Wallis | | |
| Oppressor destroyed. As it was delivered in a sermon at Pauls Septem. 21. 1651 (1651) by Joseph Caryl | | |
| Opuscula duo (1687) by James Ussher | | |
| Oratio habita in Academia Cantabrigiensi, in solenni Magnorum Comitiorum die, anno Domini MDCLX (1660) by Richard Love | | |
| Oriens ab occidente: or, A dawning in the vvest. (1645) by John Bond | | |
| 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 | | |
| Paul’s last farewel, or a sermon, preached at the funerall of Mr. Thomas Blake (1658) by Anthony Burgess | | |
| Peitharchia obedience to magistrates (1656) by Richard Vines | | |
| 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 | | |
| Phinehas’s zeal in execution of judgement. Or, A divine remedy for Englands misery (1645) by Edmund Staunton | | |
| 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 | | |
| Prayers prevalencie for Israels safety (1643) by Thomas Carter | | |
| Preaching of Christ. Opened in a sermon (1662) by Edward Reynolds | | |
| Prifannau crefydd gristnogawl a llwybraidd foddbyrr (1658) by James Ussher | | |
| Principles of faith & good conscience; digested into a catecheticall form (1650) by William Lyford | | |
| Prudent silence a sermon preached in Mercers Chappel to the lord mayor and city, Jan. 14, 1648 (1660) by Cornelius Burges | | |
| Publick affections, pressed in a sermon before the Honourable House of Commons Febr. 25. 1645 (1646) by Anthony Burgess | | |
| Quæstiones duæ unica prælectione in maioribus comitiis Cantabrigiæ determinatæ, anno 1642 (1653) by Richard Holdsworth | | |
| Queen Esthers resolves: or A princely pattern of heaven-born resolution, for all the lovers of God and their country (1646) by Richard Heyrick | | |
| Questions extracted out of the ordinance of Parliament to be propounded to receivers of the Lords Supper (1648) by Edward Reynolds | | |
| Reall thankfulnesse: or, A sermon preached in Pauls Church London, upon the second day of November, 1645 (1645) by Simeon Ashe | | |
| 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 | | |
| Reformation and desolation: or, A sermon tending to the discovery of the symptomes of a people to whom God will by no meanes be reconciled (1642) by Stephen Marshall | | |
| Reformation sure and stedfast; or, A seasonable sermon for the present times. Shewing the life and death of reformation (1641) by Thomas Ford | | |
| Reformation’s preservation: opened in a sermon at Westminster before the honourable House of Commons (1643) by Sidrach Simpson | | |
