| An Explanation of the Song of Solomon; the Shorter Catechism; and part of the Second Epistle to the Thessalonians by James Caldwell (WSC) – Added December 16, 2021 | | |
| An Explication of the Assembly’s Shorter Catechism, in consistency with the Holy Scriptures…To which is subjoined an Appendix of Baptism, by W.A. by John Browne (WSC) – Added December 16, 2021 | | |
| An explication of the Shorter catechism, composed by the Assembly of Divines, commonly called, the Westminster Assembly by John Thomson (WSC) – Added December 16, 2021 | | |
| An Explicatory Catechism: Or an Explanation of the Assembly’s Shorter Catechism by Thomas Vincent (WSC) – Added December 16, 2021 | | |
| An Explicatory Catechism: or, An Explanation of the Assemblies Shorter Catechism. Wherein Those Principles are enlarged upon especially, which obviate the great and growing Errors of Popery; useful for those Families that desire to hold fast the Form of sound words by (WSC) – Added December 16, 2021 | | |
| An exposition in the form of question and answer of the Westminster assembly’s Shorter catechism by James Harper (WSC) – Added December 16, 2021 | | |
| An Exposition of the Assembly’s Catechism by John Flavel (WSC) – Added December 16, 2021 | | |
| An exposition of the Shorter Catechism by S. D. F. Salmond (WSC) – Added December 16, 2021 | | |
| An exposition of the Shorter Catechism, or, a scripture catechism in the method of the assemblies by Matthew Henry (WSC) – Added December 16, 2021 | | |
| An Help for the Ignorant: being an Essay towards an easy Explication of the Westminster Confession of Faith and Catechisms, Composed for the Young ones of his own Congregation by John Brown (WCF, WLC, WSC) – Added December 16, 2021 | | |