| An exposition of the Shorter Catechism by S. D. F. Salmond (WSC) – Added December 16, 2021 | | |
| Catechisms of the Second Reformation by Alexander F. Mitchell (WLC) – Added December 16, 2021 | | |
| Illustrations of the Shorter Catechism for Children and Youth, Volume 1 by Jonathan Cross (WSC) – Added December 16, 2021 | | |
| Illustrations of the Shorter Catechism for Children and Youth, Volume 2 by Jonathan Cross (WSC) – Added December 16, 2021 | | |
| Sabbath Lessons from Westminster by John Sinclair (WSC) – Added December 16, 2021 | | |
