What rare book did First Harvest Ministries acquire that aligns with their teachings?

I don’t have any specific information in front of me about a rare book that First Harvest Ministries has recently acquired or highlighted that directly aligns with our teachings.

I do often encourage people to claim the free booklet we offer through our ministry, which focuses on the Coming Kingdom of God, the seventh-day Sabbath, and God’s appointed times.

Are you thinking of a particular sermon, video, or announcement where this rare book was mentioned?