Secondary Sources ~ 1938
| Studies in the Shorter Catechism – Lessons 64 and 65 by John H. Skilton (WSC) | ||
| Studies in the Shorter Catechism – Lessons 66 and 67 by John H. Skilton (WSC) | ||
| Studies in the Shorter Catechism – Lessons 68 and 69 by John H. Skilton (WSC) | ||
| Studies in the Shorter Catechism – Lessons 70 and 71 by John H. Skilton (WSC) | ||
| Thomas Goodwin and the Westminster assembly by Robert J. Platt (Studies of Westminster Divines, WA) |