| The Directory of Public Worship and the Book of Common Prayer, considered with reference to the question of a Presbyterian Liturgy by Charles W. Shields (DPW) – Added December 16, 2021 | | |
| The doctrine of absolute reprobation: According to the Westminster Confession of faith, refuted by Benjamin Eastburn (WCF) – Added December 16, 2021 | | |
| The doctrine of man in the Westminster Confession of Faith by F. A. Mathes (WCF) – Added December 16, 2021 | | |
| The Doctrine of the Holy Spirit in the Major Reformed Confessions and Catechisms of the Sixteenth and Seventeenth Centuries by Yuzo Adhinarta (WCF) – Added June 12, 2026 | | |
| The doctrine of the holy trinity explain’d and asserted from the holy scriptures.: Being a vindication of what is contain’d in the Westminster Confession of Faith and Catechisms, and other protestant confessions, upon that subject. Wherein the most important questions relating to that doctrine are clearly and succinctly treated…together with practical observations on each head by Charles Mastertown (WCF, WLC, WSC) – Added December 16, 2021 | | |
| The doctrine of the person of Christ in the Nicene Creed and the Westminster Confession of Faith by Paul C. Jassimides (WCF) – Added December 16, 2021 | | |
| The Doctrine which is according to Godliness, grounded upon The Holy Scriptures of Truth; and agreeable to the Doctrinal Part of the English Protestant Articles and Confessions by Isaac Chauncey (WSC) – Added December 16, 2021 | | |
| The doctrines of the Christian religion, Comprized in the Shorter Catechism composed by the Reverend Assembly of Divines, at Westminster: with additional improvements taken out of the larger by Multiple Contributors (WSC) – Added December 16, 2021 | | |
| The duty of holding fast the form of sound words. Refer’d to the Assembly’s Catechisms, and Confession of faith; and fit to bind by Daniel Wilcox (WCF, WLC, WSC) – Added December 16, 2021 | | |
| The English Presbyterians by Charles G. Bolam (WA) – Added December 16, 2021 | | |
