Book of Mormon Stories, put out by the Church of Jesus Christ of Latter-day Saints. He loves his nightly reading of these illustrated scriptures.
The Gospel Art Book is a favorite for him. Just don't try to open to a page and stay there--if you want it to hold his interest, he must be holding it and having control over page turning.
I'm so grateful Talmage enjoys reading so much! I come from a family of bookworms, and it is so great to see him headed the same direction. Reading to him each day affords me the opportunity to cuddle up with my boy on my lap, something that seldom happens otherwise with his hyper, energetic personality!