| Did They Dip? or, An Examination Into the Act of Baptism as Practiced by the English and American Baptists Before the Year 1641 by John T. Christian (WA) – Added December 16, 2021 | | |
| Directory for the public worship of God: on the basis of that agreed upon by the Assembly of Divines at Westminster, A.D. 1644 ; recommended for use in the Presbyterian Church of England by the Synod, 1898 by Presbyterian Church of England (DPW) – Added December 16, 2021 | | |
| Discord in Zion: The Puritan Divines and the Puritan Revolution by Tai Liu (WA) – Added December 16, 2021 | | |
| Diversity within the Reformed tradition: supra- and infralapsarianism in Calvin, Dort, and Westminster by J. V. Fesko (WCF) – Added December 16, 2021 | | |
| Divine Rule Maintained: Anthony Burgess, Covenant Theology, and the Place of the Law in Reformed Scholasticism by Stephen J. Casselli (DPW) – Added December 16, 2021 | | |
| Doctor Daniel Featley revived: proving, that the protestant church (and not the Romish) is the onely catholick and true church. In a manual preserved from the hands of the plunderers. With a succinct history of his life and death by John Featley (About) – Added December 16, 2021 | | |
| Dorchester’s New World: The Vision of John White, ‘Founder of Massachusetts’ by David Cuckson (About) – Added December 16, 2021 | | |
| Dr. Watts’s plain and easy catechisms for children: the Shorter catechism of the Assemblies of Divines at Westminster with explanatory notes; and a preservative from the sins and follies of childhood and youth by Isaac Watts (WSC) – Added December 16, 2021 | | |
| Drawn into Controversie: Reformed Theological Diversity and Debates Within Seventeenth-century British Puritanism by Michael A. G. Haykin (WA) – Added December 16, 2021 | | |
| Edinburgh Sunday School Teacher’s Union. Notes for Teachers…on the Shorter Catechism…First series of three years by (WSC) – Added December 16, 2021 | | |
