- Britain's guilt, danger and duty; several sermons, preached ... August 23, 1795. With large notes, and an appendix. By N. Douglas, ...
- Journal of a Mission to Part of the Highlands of Scotland, in Summer and Harvest 1797, by Appointment of the Relief Synod, in a Series of Letters to a Friend; ... By N. Douglas,
- The Trial of the Rev. Niel Douglas: Before the High Court of Justiciary, at Edinburgh, On the 26Th May 1817, for Sedition
- An Antidote Against Deism: In a Series of Letters ... in Which the Arguments Against the Eternal Prevalence of Sin and Misery and in Favor of the Restitution or Final Restoration of All Things Are Can
- The Trial of the Rev. Niel Douglas: Before the High Court of Justiciary, at Edinburgh, On the 26Th May 1817, for Sedition