Eight years ago I finished mailing what would be the last solo Naphtali Press prepublication promotion, Nicholas Bownd's Sabbathum Veteris et Novi Testamenti, or The True Doctrine of the Sabbath (NP&RHB, 2015). Thus began a now 8 year collaboration and joint publications with Reformation Heritage Books where I no longer have inventory and fulfillment worries. My copies are all gone but the title is still available at RHB for a good price. Maybe not the first book to read on the subject, but it is "the" puritan work, the grandfather of all subsequent puritan works that informed the Sabbatarian doctrine of the Westminster Confession of Faith, Catechisms, and Directory for Public Worship. This was a project I began in around 1992/94 but lack the tools to complete it till I determined to attempt to complete it in 2014.