| Seventeenth Century and the Westminster Assembly by Chad B. Van Dixhoorn (WA) – Added December 15, 2020 | | |
| Shades of opinion within a generic Calvinism’: the particular redemption debate at the Westminster Assembly by Lee Gatiss (WA) – Added December 16, 2021 | | |
| Sion College and the London Provincial Assembly, 1647-1660 by Philip J. Anderson (WA) – Added December 16, 2021 | | |
| Sketch of the History and Principles of the Presbyterian Church in England by Barbour Barbour (WA) – Added December 16, 2021 | | |
| Sketches of the Westminster Assembly: with a bibliography based on the holdings of the Historical Foundation of the Presbyterian and Reformed Churches by Thomas H. Spence (WA) – Added December 16, 2021 | | |
| Some Dutch Influences upon the Independents at the Westminster Assembly by R. Norris (WA) – Added December 16, 2021 | | |
| Some Problems in the History of the English Presbyterians in the 17th century by George Yule (WA) – Added December 16, 2021 | | |
| Spiritual Heroes: Sketches of the Puritans, Their Character and Times by John Stoughton (WA) – Added December 16, 2021 | | |
| Subscription to the Westminster Standards : a brief survey & analysis by James E. Urish (WA, WCF) – Added December 16, 2021 | | |
| Superiority of the Calvanistic [sic] faith and the Presbyterian government: a discourse commemorative of the meeting of the Westminster Assembly, delivered upon the occasion of the two hundredth anniversary thereof by David X. Junkin (WA) – Added December 16, 2021 | | |
