Golden Crowned Kinglet. It's a sweet little bird found all year in our local boreal forests, and called a "bird-let" by Roger Tory Peterson many years ago because of its diminutive size.)
Most of the books are about 4 inches by 5 inches. Some slightly larger; some smaller. Many have inserts of lovely papers (for special notes).
Let me know if you want to visit my studio at Breezy Acres Lane, Saranac Lake NY. I'll send you directions AND the current road conditions. (Four wheel drive is highly desirable :-)