This should be along the lines of Christadelphian Works Collection (26 vols.) | Logos Bible Software and include at least the following books:
- The Shepherd's Rod (2 volumes)
- Symbolic Code (9 volumes)
- Answerer Books (5 volumes)
- Jezreel Letters (9 volumes)
- Timely Greetings (2 volumes)
- Tracts -selected
Contact Symbolic Codes - The Davidian Seventh-day Adventists Association
While this is a small group as denominations go, I found this literature very useful in understanding groups that emphasize the prophetic and/or continuing revelation. As some of this literature is referenced in their creedal statement, this literature becomes critical to the understanding of their fundamentals and their sense of canon(s).