Peter Pauper Press puzzles are produced with the highest quality solid European blue board. Peter pauper press, founded in 1928, is one of America's leading publishers of fine gift books, humor books, compact references, travel guides, unique journals, quality stationery, holiday cards, and innovative children's activity books. In the company of a seahorse, starfish, and other aquatic creatures, a mermaid swims near a treasure chest on the ocean floor. Enchanting puzzle illustration by popular fantasy artist Stephanie Law.