Dear friends, I am gathering resources for a new Sabbath school series on typology. Several new families have joined our church coming from non-covenantal backgrounds, and I thought a ten-week study on types of Christ in the Old Testament would be an excellent way to introduce them to some concepts of covenant theology. It's basically going to be a redemptive-historical survey of the OT. Right now, I have in mind a few books and I've got copious notes from seminary classes. I was wondering, however, if anyone has come across a really good, beginner-level book or series that I could use in preparing these lessons? Thanks very much.